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math_qa
mathqa_03_02622
the present worth of rs . 1183 due in 2 years at 4 % per annum compound interest is
[ "rs . 150.50", "rs . 154.75", "rs . 156.25", "rs . 1093.75" ]
D
"solution present worth = rs . [ 1183 / ( 1 + 4 / 100 ) ² ] = rs . ( 1183 x 25 / 26 x 25 / 26 ) = rs . 1093.75 answer d"
sciq
sciq_01_08633
What term refers to the friction of fluid, within itself and its surroundings?
[ "volume", "elasticity", "salinity", "viscosity" ]
D
12.4 Viscosity and Laminar Flow; Poiseuille’s Law Laminar Flow and Viscosity When you pour yourself a glass of juice, the liquid flows freely and quickly. But when you pour syrup on your pancakes, that liquid flows slowly and sticks to the pitcher. The difference is fluid friction, both within the fluid itself and betw...
openbookqa
obqa_02_00607
Annelids do what to soil?
[ "loosen it", "tighten it", "condense it", "clump it" ]
A
tunnels in soil loosen that soil
sciq
sciq_01_06734
What is the main form of energy storage in plants?
[ "starch", "nitrogen", "dioxide", "liquid" ]
A
Many simple sugars can combine by repeated condensation reactions until a very large molecule is formed. A polysaccharide is a complex carbohydrate polymer formed from the linkage of many monosaccharide monomers. One of the best known polysaccharides is starch, the main form of energy storage in plants. Starch is a sta...
medmcqa
medmcqa_05_00983
In sickle cell anaemia, sickle shapes occur due to polymerization of
[ "Oxyhemoglobin", "Deoxyhemoglobin", "Methoxyglobin", "Cyanohemoglobin" ]
B
The substitution of hydrophilic glutamic acid by hydrophobic valine causes a localized stickiness on the surface of the molecule. The deoxygenated HbS may be depicted with a protrusion on one side and a cavity on the other side, so that many molecules can adhere and polymerize.Ref: D M Vasudevan 7th edition Page no: 29...
math_qa
mathqa_03_02426
a batsman in his 12 th innings makes a score of 115 and thereby increases his average by 3 runs . what is his average after the 12 th innings if he had never been ‘ not out ’ ?
[ "42", "43", "44", "82" ]
D
"let ‘ x ’ be the average score after 12 th innings ⇒ 12 x = 11 × ( x – 4 ) + 115 ∴ x = 82 answer d"
sciq
sciq_01_06240
What happens if a catalyst runs out?
[ "variety slows", "reaction increases", "reaction slows", "variety increases" ]
C
Chemistry in Everyday Life Transition Metal Catalysts One of the most important applications of transition metals is as industrial catalysts. As you recall from the chapter on kinetics, a catalyst increases the rate of reaction by lowering the activation energy and is regenerated in the catalytic cycle. Over 90% of all...
openbookqa
obqa_02_04170
Cells can make up components of prisons, jails, holding areas and
[ "lifeforms", "space stone", "blue jeans", "filtered water" ]
A
a living thing is made of cells
sciq
sciq_01_07743
Which part of the body shows does horner's syndrome affect?
[ "the nose", "the tongue", "one eye", "the mouth" ]
C
Horner’s syndrome is a condition that presents with changes in one eye, such as pupillary constriction and dropping of eyelids, as well as decreased sweating in the face. Why could a tumor in the thoracic cavity have an effect on these autonomic functions? 32. The cardiovascular center is responsible for regulating the...
ARC-Easy
arc_04_00471
Over a long period of time, a rocky volcanic island that previously did not support any form of life got transformed into a dense forested region. Which of these species is most likely to have been the pioneer species that initiated this transformation?
[ "ferns", "grasses", "lichens", "mushrooms" ]
C
null
sciq
sciq_01_03079
The force that a magnet exerts on certain materials is called what?
[ "magnetic force", "velocity force", "stellar force", "centripetal force" ]
A
The force that a magnet exerts on certain materials, including other magnets, is called magnetic force . The force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other. A magnet can ...
math_qa
mathqa_03_01364
the product z of two prime numbers is between 10 and 30 . if one of the prime numbers is greater than 2 but less than 6 and the other prime number is greater than 6 but less than 24 , then what is z ?
[ "21", "15", "14", "10" ]
A
"the smallest possible product is 21 which is 3 * 7 . all other products are too big . the answer is a ."
openbookqa
obqa_02_02778
The more often wildfires take place on a space of land, the more often we will see
[ "animal groups in decline", "animal populations growing larger", "more birds moving in", "larger deer starting families" ]
A
as the supply of food in an environment decreases , the population of animals in that environment will decrease
openbookqa
obqa_02_00634
Rocket engines can lift rockets because
[ "of how much fuel they use", "of how fast they are", "of the power the hit the ground with", "of how tall they are" ]
C
a rocket engine is used to produce thrust by pushing gases out at a high speed
sciq
sciq_01_11154
What is a copy of an object that is formed by reflected light?
[ "deflection", "example", "instance", "image" ]
D
Reflection is one of several ways that light can interact with matter. Light reflects off surfaces such as mirrors that do not transmit or absorb light. When light is reflected from a smooth surface, it may form an image. An image is a copy of an object that is formed by reflected (or refracted) light.
openbookqa
obqa_02_03063
A live copper wire is touched to anther copper wire end to end
[ "it doubles in length", "it melts into a puddle", "a current can reach further", "it breaks in half" ]
C
if one electrical conductor contacts another electrical conductor then electricity will flow through both conductors
medmcqa
medmcqa_05_04845
Culture media used for leptospira
[ "MYPA agar", "BYCE agar", "EMJH Medium", "Skirrow's medium" ]
C
Culture media for leptospira is EMJH media, Korthof's, Stuart's and fletcher's media.
sciq
sciq_01_04896
Dna replication is the first step in what process for both eukaryotic and prokaryotic cells?
[ "cell death", "cell division", "cell growth", "cell transfer" ]
B
1. The first step in eukaryotic cell division, as it is in prokaryotic cell division, is DNA replication. As you can see in Figure below , each chromosome then consists of two identical copies. The two copies are called sister chromatids. They are attached to each other at a point called the centromere.
sciq
sciq_01_06591
How is most evidence gathered in science?
[ "observation", "hypothesis", "field research", "lab experiments" ]
D
Lab experiments are the main method of gathering evidence in some branches of science. Why might lab experiments not be the best way to study living things, such as wild animals?.
sciq
sciq_01_03090
What is the top part of water able to receive enough sunlight for photosynthesis called?
[ "thymic zone", "fantasmic zone", "photic zone", "synthesis zone" ]
C
Only the top 200 meters or so of water receive enough sunlight for photosynthesis. This part of the water is called the photic zone. Below 200 meters, there is too little sunlight for photosynthesis to take place. This part of the water is called the aphotic zone. In this zone, food must come from other sources. It may...
math_qa
mathqa_03_03570
the interest on a certain deposit at 4.5 % p . a . is rs . 202.50 in one year . how much will the additional interest in one year be on the same deposit at 5 % p . a . ?
[ "rs . 20.25", "rs . 22.50", "rs . 25", "rs . 42.75" ]
B
"solution s . i . = rs . 202.50 , r = 4.5 % , t = 1 year . principal = rs . ( 100 x 202.50 / 4.5 x 1 ) = rs . 4500 . now , p = rs . 4500 , r = 5 % , t = 1 year . s . i . = rs . ( 4500 x 5 x 1 / 1000 = rs . 225 . ∴ difference in interest = rs . ( 225 - 202.50 ) = rs . 22.50 . answer b"
sciq
sciq_01_04832
What hormone controls milk production in mammary glands?
[ "prolactin", "melanin", "pepsin", "dopamine" ]
A
sciq
sciq_01_03879
Ultimately, the fluid that is lost from the blood vessels is returned through what system?
[ "venous", "urinary", "symptomatic", "lymphatic" ]
D
None of your blood vessels are leaking this badly, or you'd be in the hospital! But your blood vessels do leak a little bit. Water and solutes pass out of the blood vessels and help form the fluid that bathes your body's tissues. Ultimately the fluid that is lost from the blood vessels is returned through the lymphatic...
sciq
sciq_01_09110
What was the informal female name given to the adult fossil found in ethiopia and thought to be over 3 million years old?
[ "linda", "alice", "aunt", "lucy" ]
D
footprints, similar to those of modern humans, were found in Laetoli, Tanzania and dated to 3.6 million years ago. They showed that hominins at the time of Australopithecus were walking upright. There were a number of Australopithecus species, which are often referred to as australopiths. Australopithecus anamensis liv...
sciq
sciq_01_09789
We would genetically be all the same if genes did not have different what?
[ "bases", "atoms", "alleles", "antigens" ]
C
Chromosome, gene, locus and alleles are all related. What is the different between a gene and a locus? Between a gene and an allele? Chromosomes are composed of genes located at specific loci. And genes have different alleles. If genes did not have different alleles, we would genetically be all the same. What does that...
math_qa
mathqa_03_04875
the length of a rectangle is two - fifths of the radius of a circle . the radius of the circle is equal to the side of the square , whose area is 1225 sq . units . what is the area ( in sq . units ) of the rectangle if the rectangle if the breadth is 12 units ?
[ "140 sq . units", "170 sq . units", "190 sq . units", "168 sq . units" ]
D
"explanation : given that the area of the square = 1225 sq . units = > side of square = √ 1225 = 35 units the radius of the circle = side of the square = 35 units length of the rectangle = 2 / 5 * 35 = 14 units given that breadth = 12 units area of the rectangle = lb = 14 * 12 = 168 sq . units answer : option d"
medmcqa
medmcqa_05_02745
Toll-like receptor associated with virus is?
[ "TLR1", "TLR2", "TLR3", "TLR4" ]
C
Ans. C. TLR3Toll-like receptors (TLRs) are a class of proteins that play a key role in the innate immune system. They are single membrane-spanning non-catalytic receptors that recognize structurally conserved molecules derived from microbes. Once these microbes have breached physical barriers such as the skin or intest...
math_qa
mathqa_03_01876
in an election between two candidates , one got 55 % of the total valid votes , 20 % of the votes were invalid . if the total number of votes was 7500 , the number of valid votes that the other candidate got , was
[ "2500", "2700", "3000", "3100" ]
B
solution number of valid votes = 80 % of 7500 = 6000 . valid votes polled by other candidates = 45 % of 6000 ( 45 / 100 × 6000 ) = 2700 . answer b
math_qa
mathqa_03_00095
bob wants to run a mile in the same time as his sister . if bob ’ s time for a mile is currently 10 minutes 20 seconds and his sister ’ s time is currently 9 minutes 36 seconds , by what percent does bob need to improve his time in order run a mile in the same time as his sister ?
[ "3 %", "5 %", "7 %", "10 %" ]
C
"bob ' s time = 620 secs . his sis ' time = 576 secs . percent increase needed = ( 620 - 576 / 620 ) * 100 = 44 / 640 * 100 = 7 % . ans ( c ) ."
sciq
sciq_01_10265
What type of energy from a warm cola results in melting when it is transferred to the much colder ice?
[ "cyclic energy", "thermal energy", "protective energy", "gaseous energy" ]
B
How do you cool down a glass of room-temperature cola? You probably add ice cubes to it, as in the Figure below . You might think that the ice cools down the cola, but in fact, it works the other way around. The warm cola heats up the ice. Thermal energy from the warm cola is transferred to the much colder ice, causing...
sciq
sciq_01_08126
What stored form of energy is made up of glycerol and three fatty acid chains?
[ "hydrocarbons", "carbohydrates", "particulates", "triglycerides" ]
D
Triglycerides are the main form of stored energy in animals. This type of lipid is commonly called fat. Triglycerides are composed of a glycerol and three fatty acid chains. An example is shown in Figure below . In humans, triglycerides are a mechanism for storing unused calories, and their high concentration in blood ...
math_qa
mathqa_03_00262
a train running at a speed of 36 kmph crosses an electric pole in 12 seconds . in how much time will it cross a 340 m long platform ?
[ "19", "27", "29", "46" ]
D
"let the length of the train be x m . when a train crosses an electric pole , the distance covered is its own length . so , x = 12 * 36 * 5 / 18 m = 120 m . time taken to cross the platform = ( 120 + 340 ) / 36 * 5 / 18 = 46 min . answer : d"
sciq
sciq_01_02281
What weather phenomenon increases the rate of weathering in rock and soil?
[ "rainfall", "earthquake", "temperature", "landslide" ]
A
Rainfall in an area is important because it influences the rate of weathering. More rain means that more rainwater passes through the soil. The rainwater reacts chemically with the particles. The top layers of soil are in contact with the freshest water, so reactions are greatest there. High rainfall increases the amou...
sciq
sciq_01_02195
What is the large muscle that extends across the bottom of the chest below the lungs called?
[ "abdomen", "uterus", "pectoral", "diaphragm" ]
D
Mammals breathe with the help of a diaphragm . This is the large muscle that extends across the bottom of the chest below the lungs. When the diaphragm contracts, it increases the volume of the chest. This decreases pressure on the lungs and allows air to flow in. When the diaphragm relaxes, it decreases the volume of ...
openbookqa
obqa_02_02536
If a plant is in an environment with a lot of oxygen, and then oxygen levels very slightly drop, the plant will
[ "understand", "sour", "calibrate", "pray" ]
C
changes in an environment cause plants to adapt to survive
ARC-Challenge
arc_04_02817
A student prepares a report on gradual environmental changes. Which is the best topic for this report?
[ "forest fires in mountain regions", "succession that transforms grassland to forest", "decomposition of a desert rodent", "flash flooding in a country area" ]
B
null
medmcqa
medmcqa_05_03112
Treatment of choice for non-united fracture of lower 1/4th tibia with multiple discharging sinuses & various puckered scar with 4cm shoening of leg-
[ "Plating", "External fixature", "Ilizarov's fixature", "Intramedullary nail" ]
C
*Patient in question has infected non-union with shoening of 4cms. Ilizanov fixature with distraction osteogenesis will be the best option. Ref: Maheshwari 9th/e p.158
sciq
sciq_01_08383
Four electron groups orient themselves into what shape that has four faces?
[ "multicellular", "spherical", "tetrahedron", "circular" ]
C
Four electron groups orient themselves in the shape of a tetrahedron.
sciq
sciq_01_09098
What happens to the recessive traits in the offspring of a hybridization?
[ "they replicate", "they dominate", "they disappear", "remain recessive" ]
C
Upon compiling his results for many thousands of plants, Mendel concluded that the characteristics could be divided into expressed and latent traits. He called these, respectively, dominant and recessive traits. Dominant traits are those that are inherited unchanged in a hybridization. Recessive traits become latent, o...
ARC-Challenge
arc_04_02977
Which is the best evidence that cell division is occurring constantly in our bodies?
[ "The body has to keep breathing around the clock.", "Active people often require more food than inactive ones.", "There are many different types of tissues in the human body.", "Human beings shed millions of" ]
D
null
medmcqa
medmcqa_05_03011
Deformity associated with ulnar nerve injury is:
[ "Wrist drop", "Simon hand", "Claw hand", "Ape thumb deformity" ]
C
Ans:C.)Claw Hand. An ulnar claw, also known as claw hand, or 'Spinster's Claw' is an abnormal hand position that develops due to a problem with the ulnar nerve. A hand in ulnar claw position will have the 4th and 5th fingers extended at the metacarpophalangeal joints and flexed at the interphalangeal joints. The patien...
medmcqa
medmcqa_05_01337
Pupillary reflex is lost in:
[ "Optic neuritis", "Glaucoma", "Iridocyclitis", "Adie's pupil" ]
D
Ans. Adie's pupil
sciq
sciq_01_08906
Where do most cnidarians live?
[ "ocean", "grass", "hills", "rocks" ]
A
Cnidarians are invertebrates such as jellyfish and corals. They belong to the phylum Cnidaria. All cnidarians are aquatic. Most of them live in the ocean. Cnidarians are a little more complex than sponges. They have radial symmetry and tissues. There are more than 10,000 cnidarian species. They are very diverse, as sho...
math_qa
mathqa_03_01246
laxmi and prasanna set on a journey . laxmi moves northwards at a speed of 40 kmph and prasanna moves southward at a speed of 38 kmph . how far will be prasanna from laxmi after 60 minutes ?
[ "11", "50", "78", "27" ]
C
"explanation : we know 60 min = 1 hr total northward laxmi ' s distance = 40 kmph x 1 hr = 40 km total southward prasanna ' s distance = 38 kmph x 1 hr = 38 km total distance between prasanna and laxmi is = 40 + 38 = 78 km . answer : c"
math_qa
mathqa_03_01943
machine a can finish a job in 4 hours , machine в can finish the job in 12 hours , and machine с can finish the job in 8 hours . how many hours will it take for a , b , and с together to finish the job ?
[ "15 / 4", "18 / 7", "21 / 8", "24 / 11" ]
D
"the combined rate is 1 / 4 + 1 / 12 + 1 / 8 = 11 / 24 of the job per hour . the time to complete the job is 24 / 11 hours . the answer is d ."
ARC-Easy
arc_04_00889
Nerve cells transmitting messages to the body best demonstrate which primary function?
[ "the transfer of energy", "the exchange of gases", "the elimination of waste", "the absorption of nutrients" ]
A
null
sciq
sciq_01_00536
What does the activity of an organism depend on the totality of?
[ "interdependence", "chemical attraction", "independent cells", "adaptations" ]
C
the activity of an organism depends on the total activity of independent cells,.
math_qa
mathqa_03_01126
find the principle on a certain sum of money at 5 % per annum for 2 2 / 5 years if the amount being rs . 1568 ?
[ "1000", "2777", "2889", "1400" ]
D
"1568 = p [ 1 + ( 5 * 12 / 5 ) / 100 ] p = 1400 . answer : d"
medmcqa
medmcqa_05_04796
Material used in veebroplasty:
[ "Polymethyl methacrylate", "IsoMethyl Methacry]ate", "Isoethyl Methacrylayte", "Silicon" ]
A
Ans. Polymethyl methacrylate
ARC-Challenge
arc_04_02642
A food chain is shown. Sunlight -> Grass -> Rabbit -> Snake. What is the abiotic factor in this food chain?
[ "Sunlight", "Grass", "Rabbit", "Snake" ]
A
null
openbookqa
obqa_02_01784
A frog will hibernate by burying itself in mud, freezing, then thawing again in the spring. The only of these that also go through a somewhat similar process in cold times is
[ "doves", "grizzlies", "rats", "people" ]
B
An example of hibernation is a frog burying itself in mud
medmcqa
medmcqa_05_03137
Not a defense mechanism:
[ "Derailment", "Repression", "Distoion", "Undoing" ]
A
Derailment is a formal thought disorder and not a defense mechanism. Distoion involves modification of reality. Denial means refusal to accept the reality Undoing is an act to nullify the previous act.
sciq
sciq_01_06978
What describes how close an estimate is to a known standard?
[ "diversity", "accuracy", "frequency", "precision" ]
B
Accuracy describes how close an estimate is to a known standard.
sciq
sciq_01_11643
What resource is considered nonrewable for human purposes, because it takes so long to form and is depleted by farming and other activities?
[ "water", "sunshine", "soil", "acid" ]
C
Although renewable, soil takes a very long to form—up to hundreds of millions of years. So, for human purposes, soil is a nonrenewable resource. It is also constantly depleted of nutrients through careless use and eroded by wind and water. For example, misuse of soil caused a huge amount of it to simply blow away in th...
ARC-Easy
arc_04_01813
When sodium hydroxide reacts with a copper nitrate solution, the reaction vessel needs to be kept on ice to slow down the reaction. What best describes this reaction?
[ "an exothermic reaction that absorbs energy", "an exothermic reaction that releases energy", "an endothermic reaction that absorbs energy", "an endothermic reaction that releases energy" ]
B
null
sciq
sciq_01_11501
Which state of matter lacks a fixed volume, fixed shape, and consists of charged particles?
[ "isotopes", "electrons", "ions", "atoms" ]
C
Plasma is a state of matter that lacks a fixed volume and a fixed shape and consists of charged particles called ions. Because it consists of charged particles, plasma can conduct electricity and respond to a magnetic field.
openbookqa
obqa_02_02747
If pollution is caused by many things, it is least likely to be caused by
[ "using styrofoam", "pedaling forward", "driving cars", "smoking cigarettes" ]
B
riding a bike does not cause pollution
sciq
sciq_01_02814
What consists of four major components: inorganic mineral matter, organic matter, water and air, and living matter?
[ "soil", "rocks", "color", "nitrogen" ]
A
31.2 The Soil Plants obtain mineral nutrients from the soil. Soil is the outer loose layer that covers the surface of Earth. Soil quality depends on the chemical composition of the soil, the topography, the presence of living organisms, the climate, and time. Agricultural practice and history may also modify the charac...
math_qa
mathqa_03_02616
gary ’ s gas station serves an average of 16 cars per hour on saturdays , 10 cars per hour on sundays , and 9 cars per hour on all other days of the week . if the station is open from 6 a . m . to 10 p . m . every day , how many cars does gary ’ s station serve over the course of a typical week ?
[ "1,136", "1,200", "1,240", "1,280" ]
A
"6 a . m . to 10 p . m . = 16 hours number of cars serviced on weekdays = ( 16 * 9 * 5 ) number of cars serviced on saturday = ( 16 * 16 ) number of cars serviced on sunday = ( 16 * 10 ) number of cars served in a week = 16 ( 45 + 16 + 10 ) = 16 * 71 = 1136 answer : a"
ARC-Easy
arc_04_00993
Anthony and Zach want to know how the temperature of the air affects the temperature of lake water. Which type of tool should they use to measure the temperatures?
[ "balance", "ruler", "scale", "thermometer" ]
D
null
sciq
sciq_01_01600
The union of gametes is called?
[ "migration", "fertilization", "fusion", "pollination" ]
B
Sexual reproduction involves two parents. It produces offspring that are all genetically unique. It requires the production of haploid gametes. The union of gametes is called fertilization. It results in a diploid zygote.
medmcqa
medmcqa_05_02254
Steroid resistant nephritic syndrome is:
[ "Nephrin", "Alpha-actinin-4", "Podocin", "Transient Receptor Potential 6" ]
C
. Podocin
medmcqa
medmcqa_05_01838
Most common genital lesion in HIV patient is:
[ "Chlamydia", "Herpes", "Syphilis", "Candida" ]
B
Ans. is 'b' i.e., Herpes * Herpes simplex (in the developed world) and chancroid (in Africa) are the most common cause of genital ulceration in HIV infected patients.* Herpesvirus infections are common in AIDS patients, and multiple herpesviruses are frequently detected being shed in saliva. Cytomegalovirus retinitis i...
ARC-Challenge
arc_04_02416
When the switch in a simple series circuit is closed, what happens to the light bulb that the electricity is flowing to?
[ "the light cracks", "the light goes off", "the light burns out", "the light comes on" ]
D
null
sciq
sciq_01_06628
What is the transfer of thermal energy by waves that can travel through empty space called?
[ "induction", "vibration", "radiation", "convection" ]
C
Radiation is the transfer of thermal energy by waves that can travel through empty space. When the waves reach objects, they transfer thermal energy to the objects. This is how the sun’s energy reaches and warms Earth.
math_qa
mathqa_03_01500
a certain roller coaster has 5 cars , and a passenger is equally likely to ride in any 1 of the 5 cars each time that passenger rides the roller coaster . if a certain passenger is to ride the roller coaster 5 times , what is the probability that the passenger will ride in each of the 5 cars ?
[ "0", "24 / 625", "2 / 9", "1 / 3" ]
B
"if he is to ride 5 times and since he can choose any of the 5 cars each time , total number of ways is = 5 * 5 * 5 * 5 * 5 = 3125 now the number of ways if he is to choose a different car each time is = 5 * 4 * 3 * 2 * 1 = 120 so the probability is = 120 / 3125 = 24 / 625 answer : b"
ARC-Easy
arc_04_00214
Structural geologists study rock formations to determine the type of environment in which the rocks formed and the events that shaped the rocks. Paleontologists study fossils found in rock formations. Scientists in both these fields have a common interest in discovering the
[ "history and processes of Earth.", "elements that make up the crust.", "types of minerals that make up sediments.", "relationships between Earth and other planets." ]
A
null
sciq
sciq_01_04846
Three distinct layers or tunics form the walls of what structures; the first is a smooth, inner lining of endothelial cells in contact with the red blood cells?
[ "lungs", "white blood cells", "blood vessels", "alveoli" ]
C
The structure of the different types of blood vessels reflects their function or layers. There are three distinct layers, or tunics, that form the walls of blood vessels (Figure 40.16). The first tunic is a smooth, inner lining of endothelial cells that are in contact with the red blood cells. The endothelial tunic is ...
math_qa
mathqa_03_02369
the number which exceeds 16 % of it by 42 is ?
[ "50", "25", "52", "58" ]
A
"let the number be x . then , x - 16 % of x = 42 . x - 16 / 100 x = 42 x = ( 42 * 25 ) / 21 = 50 answer : a"
sciq
sciq_01_07041
Electrons move, but they aren’t destroyed. this is the law of conservation of what?
[ "charge", "matter", "cost", "energy" ]
A
Like the formation of ions, the formation of charged matter in general depends on the transfer of electrons either between two materials or within a material. Three ways this can occur are friction, conduction, and polarization. In all cases, the total charge remains the same. Electrons move, but they aren’t destroyed....
openbookqa
obqa_02_04484
Pollination is required for what reproduction?
[ "elephant", "bug", "bird", "flora" ]
D
plant reproduction requires pollination
medmcqa
medmcqa_05_03213
Miyagawa corpuscles are characteristic of ?
[ "Psittacosis", "Malaria", "Rabies", "Lymphogranuloma venerum" ]
D
Ans. is. d. i.e., Lymphogranuloma venerum Inclusion body of C.trachomatis causing conjuctivitis - Halberstaedter prowazek (H.P.) body.Inclusion body of C. trachomatis causing L.G.V. -s Miyagawa's granulocorpuscles.In psittacosis -s Levinthal - toles - lillie bodies.
sciq
sciq_01_06599
Dissolved oxygen in seawater is critical for sea creatures, but as the oceans warm, oxygen becomes less what?
[ "abundant", "insoluble", "saturated", "soluble" ]
D
Introduction Coral reefs are home to about 25% of all marine species. They are being threatened by climate change, oceanic acidification, and water pollution, all of which change the composition of the solution we know as seawater. Dissolved oxygen in seawater is critical for sea creatures, but as the oceans warm, oxyg...
math_qa
mathqa_03_01328
the ratio of males to females in a class is 2 : 3 . the career preferences of the students in the class are represented in a circle graph . if the area of the graph allocated to each career preference is proportional to the number of students who have that career preference , how many degrees of the circle should be us...
[ "120", "126", "132", "138" ]
B
"1 / 2 * 2 / 5 + 1 / 4 * 3 / 5 = 4 / 20 + 3 / 20 = 7 / 20 the number of degrees is 7 / 20 * 360 = 126 degrees the answer is b ."
medmcqa
medmcqa_05_00260
Which of the following bacteria cause the intracellular accumulation of high levels of C -AMP?
[ "Vibrio cholera", "Staphyloccus aureus", "L-coh heat stable", "Salmonella" ]
A
After reaching small bowel vibrio cholerae produces cholera toxin, which consists of A and B subunit. The B subunit binds to GM1 ganglioside, making possible the delivery of the A subunit to its cytosolic target. The ultimate result is the prolonged activation of C-AMP resulting in intracellular accumulation of high le...
sciq
sciq_01_02279
What is a high concentrated solution typically referred to as?
[ "stock solution", "saline sollution", "share solution", "percent solution" ]
A
Another common dilution problem involves deciding how much of a highly concentrated solution is requires to make a desired quantity of solution of lesser concentration. The highly concentrated solution is typically referred to as the stock solution.
math_qa
mathqa_03_02801
the instructions state that deepthi needs 4 / 17 square yards of one type of material and 3 / 10 square yards of another type of material for a project . she buys exactly that amount . after finishing the project , however , she has 9 / 30 square yards left that she did not use . what is the total amount of square yard...
[ "1 / 12", "4 / 17", "2 / 3", "1 1 / 9" ]
B
total bought = 4 / 17 + 3 / 10 left part 9 / 30 - - - > 3 / 10 so used part 4 / 17 + 3 / 10 - 3 / 10 = 4 / 17 answer : b
sciq
sciq_01_02294
What is the biogeochemical cycle that recycles water called?
[ "Liquid Cycle", "water theory", "water cycle", "Water Table" ]
C
The biogeochemical cycle that recycles water is the water cycle. The water cycle involves a series of interconnected pathways involving both the biotic and abiotic components of the biosphere. Water is obviously an extremely important aspect of every ecosystem. Life cannot exist without water. Many organisms contain a ...
openbookqa
obqa_02_04711
As the pull of gravity decreases air molecules
[ "explode", "disperse", "crowd together", "party" ]
B
as altitude increases , air pressure will decrease
openbookqa
obqa_02_02458
Deer can be responsible for which activity?
[ "building office buildings", "pollution", "transporting seeds", "hunting bears" ]
C
if seeds stick to the fur of an animal then that seed will be transported by the animal
medmcqa
medmcqa_05_01961
Principal cause of death in renal transplant patient
[ "Uraemia", "Malignancy", "Rejection", "Infection" ]
D
Ref cambell's urology,8/e p346-349 * The graft rejection response is initiated mainly by host T cells that recognize the foreign HLA antigens of the graft, either directly (on APCs in the graft) or indirectly (after uptake and presentation by host APCs). * Types and mechanisms of rejection comprise the following: Hyper...
ARC-Challenge
arc_04_02741
Mr. Jenkins's class is studying sex chromosomes. He tells his students that the nuclei of human cells have 22 pairs of autosomes. How many sex chromosomes does the human body have?
[ "1", "2", "23", "46" ]
B
null
ARC-Challenge
arc_04_03099
How many times does Earth rotate on its axis in one day?
[ "once", "twice", "24 times", "365 times" ]
A
null
sciq
sciq_01_07043
What is used as a vector for gene insertion in ex vivo gene therapy?
[ "virus", "typhus", "penicillin", "bacteria" ]
A
In ex vivo gene therapy, done outside the body, cells are removed from the patient and the proper gene is inserted using a virus as a vector. The modified cells are placed back into the patient.
sciq
sciq_01_10034
When resources become limiting, populations follow a logistic growth curve in which the size will level off at a point called what?
[ "full capacity", "believed capacity", "containing capacity", "carrying capacity" ]
D
19.2 Population Growth and Regulation Populations with unlimited resources grow exponentially—with an accelerating growth rate. When resources become limiting, populations follow a logistic growth curve in which population size will level off at the carrying capacity. Populations are regulated by a variety of density-d...
sciq
sciq_01_03453
Dutch scientist christiaan huygens' principle of what states that every point on a wavefront is a source of wavelets that spread out in the forward direction at the speed of the wave itself?
[ "electromagnetic dynamics", "wave dynamics", "wave propagation", "energy propagation" ]
C
The Dutch scientist Christiaan Huygens (1629–1695) developed a useful technique for determining in detail how and where waves propagate. Starting from some known position, Huygens’s principle states that: Every point on a wavefront is a source of wavelets that spread out in the forward direction at the same speed as th...
openbookqa
obqa_02_04583
Metamorphosis is complete at
[ "adulthood", "embryo", "hatching egg", "larva" ]
A
a moth undergoes metamorphosis
medmcqa
medmcqa_05_01052
Nerve commonly involved in fracture distal shaft of the Humerus is ?
[ "Radial nerve", "Medial nerve", "Ulnar nerve", "Circumflex brachial nerve" ]
A
Up to 18% of humeral shaft fracture is an associated radial nerve palsy, but may occur more commonly in distal third fractures. Radial nerve is commonly at risk if the fracture is at the junction of mid and distal thirds of the humeral shaft and paicularly if fracture is associated with lateral displacement of distal f...
medmcqa
medmcqa_05_01891
Cubitus Valgus Deformity is commonly seen in which of the following conditions -
[ "Malunited Lateral Condylar fracture of Humerus", "Malunited Supracondylar Fracture of Humerus", "Posterior dislocation of elbow", "Fracture medial condyle of humerus" ]
A
Ans. is 'a' i.e., Malunited Lateral Condylar fracture of Humerus o Fractures commonly showing cubitus valgus deformity due to malunion :# Fracture lateral condyle humerus# Monteggia Fracture Dislocationo Complications of lateral condylar humerus fractures# Cubitus valgus# Cubitus Pseudovarus (lateral spur)# Tardy ulnar...
math_qa
mathqa_03_03422
last year , for every 100 million vehicles that traveled on a certain highway , 100 vehicles were involved in accidents . if 2 billion vehicles traveled on the highway last year , how many of those vehicles were involved in accidents ? ( 1 billion = 1,000 , 000,000 )
[ "500", "1500", "2500", "2000" ]
D
"to solve we will set up a proportion . we know that “ 100 million vehicles is to 100 accidents as 2 billion vehicles is to x accidents ” . to express everything in terms of “ millions ” , we can use 2,000 million rather than 2 billion . creating a proportion we have : 100 / 100 = 2,000 / x cross multiplying gives us :...
math_qa
mathqa_03_03417
a basket of 1430 apples is divided equally among a group of apple lovers . if 45 people join the group , each apple lover would receive 9 apples less . how many q apples did each person get before 45 people joined the feast ?
[ "20 .", "21 .", "22 .", "23 ." ]
C
"before solving it algebraically , let us prime factorize 1430 = 2 * 5 * 11 * 13 . since number of apples per person * total persons q = 1430 , the answer should be a factor of 1430 . only c is . and that ' s your answer . c"
medmcqa
medmcqa_05_00888
Posterior epistaxis is commonly seen in -
[ "Children with ethmoidal polyps", "Foreign bodies of the nose", "Hypertension", "Nose picking" ]
C
Ans. is 'c' i.e., Hypertension o Posterior epistaxis is usually spontaneous (due to high BP or atherosclerosis) and is sever enough to requires hospitalization and posterior nasal pack.Epistaxiso Epistaxis refers to bleedingfrom the nose. Epistaxis is a common and often self limiting disease that affects men and women ...
medmcqa
medmcqa_05_01857
Pautriers microabscess is seen in -
[ "Psoriasis", "Mycosis fungoides", "Lichen planus", "Leprosy" ]
B
In mycosis fungoides, T cells characteristically form bandlike aggregates within the superficial dermis and invade the epidermis as single cells and small clusters (Pautrier microabscesses).
medmcqa
medmcqa_05_03550
In SDS-PAGE (Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis) proteins are separated on basis of: (PGI June 2009)
[ "Mass", "Charge", "Density", "Molecular weight" ]
A
Ans: A (Mass) & D (Molecular weight) "The most widely used method for determining purity of of a protein is SDS-PAGEfi-sodium dodecyl sulphate(SDS).ln this polypeptide separates based on their relative molecular mass (Mr)"- Harper 27th/24Methods Used for Protein Separation & AnalysisTechniqueProtein Property ExploitedE...
math_qa
mathqa_03_04777
a student is ranked 21 th from right and 11 th from left . how many students are there in totality ?
[ "18", "19", "20", "31" ]
D
"from right 21 , from left 11 total = 21 + 11 - 1 = 31 answer : d"
openbookqa
obqa_02_04261
Which two letters are most associated with painful, red flesh?
[ "O and A", "Q and P", "U and V", "F and J" ]
C
sunlight contains ultraviolet light
sciq
sciq_01_09360
Scientists will often observe and then what the reason why a phenomenon occurred?
[ "hypothesize", "realize", "theorize", "normalize" ]
A
2.3 Scientific method The scientific method is not a step by step, linear process. It is an intuitive process, a methodology for learning about the world through the application of knowledge. Scientists must be able to have an "imaginative preconception" of what the truth is. Scientists will often observe and then hypo...
sciq
sciq_01_01867
In some cases, the nervous system directly stimulates endocrine glands to release hormones, which is referred to as what?
[ "active stimuli", "functional stimuli", "brain stimuli", "neural stimuli" ]
D
Neural Stimuli In some cases, the nervous system directly stimulates endocrine glands to release hormones, which is referred to as neural stimuli. Recall that in a short-term stress response, the hormones epinephrine and norepinephrine are important for.
sciq
sciq_01_00099
What is the term for the process in which living things with beneficial traits produce more offspring than others do?
[ "natural variety", "natural survival", "natural process", "natural selection" ]
D
The other idea is that evolution occurs by natural selection. Natural selection is the process in which living things with beneficial traits produce more offspring than others do. This results in changes in the traits of living things over time.
math_qa
mathqa_03_04988
12.1212 + 17.0005 - 9.1103 = ?
[ "20.0015", "20.0105", "20.0115", "20.0114" ]
D
solution given expression = ( 12.1212 + 17.0005 ) - 9.1103 = ( 29.1217 - 9.1103 ) = 20.0114 . answer d