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7.76k
sciq
sciq_01_00502
What type of fibers are made mostly of protein in living things?
[ "organ fibers", "muscle fibers", "liver fibers", "connective tissue fibers" ]
B
Muscle fibers are made mostly of protein.
sciq
sciq_01_06733
In preparation for phagocytosis, a portion of the inward-facing surface of the plasma membrane becomes coated with a protein called clathrin, which stabilizes this section of what?
[ "membrane", "nuclei", "mitochondria", "particles" ]
A
In preparation for phagocytosis, a portion of the inward-facing surface of the plasma membrane becomes coated with a protein called clathrin, which stabilizes this section of the membrane. The coated portion of the membrane then extends from the body of the cell and surrounds the particle, eventually enclosing it. Once...
medmcqa
medmcqa_05_01246
A 13-year-old girl complains of backache and fatigue. Her mother has noticed that she is becoming increasingly round-shouldered. On examination, she has a smooth thoracic kyphosis. X-ray shows wedge- shaped vertebral bodies in the thoracic spine:
[ "Scheuermann's disease", "Ankylosing spondylitis", "Intervertebral disc prolapse", "Spinal stenosis" ]
A
Ans. A. Scheuermann's diseaseScheuermann's disease is a rare condition that typically affects teenagers. There is abnormal ossification of ring epiphyses of thoracic vertebrae. The deforming forces are greatest at the anterior border of the vertebrae, giving rise to the described wedge-shaped vertebral bodies (i.e. nar...
math_qa
mathqa_03_00713
2 , 3 , 6 , 15 , _ , 123 ?
[ "42", "38", "28", "29" ]
A
answer : a
math_qa
mathqa_03_03463
the price of a jacket is reduced by 10 % . during a special sale the price of the jacket is reduced another 30 % . by approximately what percent must the price of the jacket now be increased in order to restore it to its original amount ?
[ "32.5", "58.7", "48", "65" ]
B
"1 ) let the price of jacket initially be $ 100 . 2 ) then it is decreased by 10 % , therefore bringing down the price to $ 90 . 3 ) again it is further discounted by 30 % , therefore bringing down the price to $ 63 . 4 ) now 67.5 has to be added byx % in order to equal the original price . 63 + ( x % ) 63 = 100 . solv...
sciq
sciq_01_01457
What produces almost one-half of the earth's oxygen through photosynthesis?
[ "arthropods", "protists", "algae", "prokaryotes" ]
B
Humans could not live on Earth if it were not for protists. Why? Plant-like protists produce almost one-half of the oxygen on the planet through photosynthesis. Other protists decompose and recycle nutrients that humans need to live. All protists make up a huge part of the food chain.
sciq
sciq_01_11284
Chemical reactions follow which laws?
[ "thermodynamics", "Physics Analysis", "Archie's law", "Chemical kinetics" ]
A
Chemical reactions follow the laws of thermodynamics. The First Law of Thermodynamics states that energy can be changed from one form to another, but it cannot be created or destroyed. This law is also known as the Law of Conservation of Energy. The Second Law of Thermodynamics states the energy available after a chemi...
openbookqa
obqa_02_03358
if a person travels on foot from home to school, which of these is given off?
[ "a release of vitamins", "a release of water vapor", "a blaze of fire", "a release of heat" ]
D
moving changes stored energy into motion and heat
math_qa
mathqa_03_00631
two goods trains each 125 m long are running in opposite directions on parallel tracks . their speeds are 45 km / hr and 30 km / hr respectively . find the time taken by the slower train to pass the driver of the faster one ?
[ "40", "12", "48", "51" ]
B
"relative speed = 45 + 30 = 75 km / hr . 75 * 5 / 18 = 125 / 6 m / sec . distance covered = 125 + 125 = 250 m . required time = 250 * 6 / 125 = 12 sec . answer : option b"
sciq
sciq_01_08118
What kind of energy is released when the thermochemical reaction of a campfire converts wood to carbon dioxide and water?
[ "ultraviolet", "smoke", "heat", "light" ]
C
A camp fire is an example of basic thermochemistry. The reaction is initiated by the application of heat from a match. The reaction converting wood to carbon dioxide and water (among other things) continues, releasing heat energy in the process. This heat energy can then be used to cook food, roast marshmallows, or jus...
math_qa
mathqa_03_03687
a sum fetched a total simple interest of 4025.25 at the rate of 9 % . p . a . in 5 years . what is the sum ?
[ "5768", "8925", "2345", "8945" ]
D
"principal = ( 100 x 4025.25 ) / ( 9 x 5 ) = 402525 / 45 = 8945 . answer d"
math_qa
mathqa_03_00222
a football team lost 5 yards and then gained 10 . what is the team ' s progress ?
[ "2", "4", "5", "6" ]
C
"for lost , use negative . for gain , use positive . progress = - 5 + 10 = 5 yards c"
sciq
sciq_01_10372
Most ferns produce the same type of spores and are therefore called what?
[ "homosporous", "sporozoans", "heterosporous", "seeds" ]
A
To see an animation of the lifecycle of a fern and to test your knowledge, go to the website (http://openstaxcollege. org/ l/fern_life_cycle) . Most ferns produce the same type of spores and are therefore homosporous. The diploid sporophyte is the most conspicuous stage of the lifecycle. On the underside of its mature ...
sciq
sciq_01_03793
What do scientists use to study the deep without going to the seafloor?
[ "drill rigs", "ultrasound machines", "remotely operated vehicles", "telescopes" ]
C
Sending humans to the seafloor is expensive and dangerous. Having to return humans safely to the surface limits what a mission can do. Remotely operated vehicles , or ROVs, allow scientists to study the deep without going to the seafloor. These small vehicles carry cameras and scientific instruments. ROVs were used to ...
openbookqa
obqa_02_02756
If a pork chop is underdone, the likelihood of illness spreading to consumers of it is
[ "low", "nil", "extreme", "zero" ]
C
cooking food to proper temperatures protects against food poisoning by killing bacteria and viruses
sciq
sciq_01_01338
During what type of reproduction do two haploid gametes join in the process of fertilization to produce a diploid zygote?
[ "essential reproduction", "internal reproduction", "asexual reproduction", "sexual reproduction" ]
D
During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote.
math_qa
mathqa_03_01519
a person walks at a speed of 4 km / hr and runs at a speed of 8 km / hr . how many hours will the person require to cover a distance of 12 km , if the person completes half of the distance by walking and the other half by running ?
[ "1.25", "1.75", "2.25", "2.75" ]
C
"time = 6 / 4 + 6 / 8 = 18 / 8 = 2.25 hours the answer is c ."
sciq
sciq_01_00478
The development of a head region is called what?
[ "spore", "cephalization", "cocklebur", "trichina" ]
B
Most flatworms have a distinct head region that includes nerve cells and sensory organs, such as eyespots. The development of a head region, called cephalization , evolved at the same time as bilateral symmetry in animals. This process does not occur in cnidarians, which evolved prior to flatworms and have radial symme...
sciq
sciq_01_02983
What term is used to describe the sequence of elementary steps that together comprise an entire chemical reaction?
[ "reaction mechanism", "elemental mechanism", "potassium mechanism", "source mechanism" ]
A
In this equation, the letters A and B represent the reactants that begin the reaction, and the letter C represents the product that is synthesized in the reaction. The arrow shows the direction in which the reaction occurs.
math_qa
mathqa_03_02908
vijay lent out an amount rs . 10000 into two parts , one at 8 % p . a . and the remaining at 10 % p . a . both on simple interest . at the end of the year he received rs . 850 as total interest . what was the amount he lent out at 8 % pa . a ?
[ "rs . 15000", "rs . 6000", "rs . 25000", "rs . 10000" ]
A
let the amount lent out at 8 % p . a . be rs . a = > ( a * 8 ) / 100 + [ ( 10000 - a ) * 10 ] / 100 = 850 = > a = rs . 15000 . answer : a
openbookqa
obqa_02_03716
If a hilly area that reaches incredible peaks is existing, then what happened long ago was
[ "things were steamed", "rocks were tiny", "stones crumpling together", "plants were eaten" ]
C
the Appalachians were formed by rock folding
medmcqa
medmcqa_05_04208
The oral fatal dose of potassium cyanide is
[ "5-10 mg", "1-2 mg", "200-300 mg", "1-2 gm" ]
C
Fatal dose: 50 to 60 mg of pure acid 200-300mg of NaCN and KCN Fatal period: HCN 2-10 min NaCN and KCN 30 min Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 472
math_qa
mathqa_03_00545
two assembly line inspectors , lauren and steven , inspect widgets as they come off the assembly line . if lauren inspects every fifth widget , starting with the fifth , and steven inspects every third , starting with the third , how many of the 98 widgets produced in the first hour of operation are not inspected by ei...
[ "91", "59", "53", "47" ]
C
"widgets inspected by lauren : ( ( 95 - 5 ) / 5 ) + 1 = 18 + 1 = 19 widgets inspected by steven : ( ( 96 - 3 ) / 3 ) + 1 = 31 + 1 = 32 widgets inspected by both : ( ( 90 - 15 ) + 1 = 6 total : 19 + 32 - 6 = 45 hence , widgets not inspected : 98 - 45 = 53 answer : c"
sciq
sciq_01_10896
Composed largely of the polysaccharide chitin, the exoskeleton provides an effective barrier defense against most what?
[ "vaccines", "white blood cells", "parasites", "pathogens" ]
D
sciq
sciq_01_02398
The duodenum is a part of which part of the gi tract?
[ "ulna", "small intestine", "large intense", "pharynx" ]
B
The duodenum is the first and shortest part of the small intestine. Most chemical digestion takes place here, and many digestive enzymes are active in the duodenum (see Table below ). Some are produced by the duodenum itself. Others are produced by the pancreas and secreted into the duodenum.
sciq
sciq_01_07871
In contrast to mammals and birds, freshwater fishes produce large volumes of very dilute what?
[ "feces", "urine", "blood", "nitrogen" ]
B
sciq
sciq_01_08505
Surface tension forces between moleculse cause the surface of liquid to contract to what?
[ "smallest surface area", "Weak Surface area", "typically surface area", "strongest surface area" ]
A
Surface Tension Cohesive forces between molecules cause the surface of a liquid to contract to the smallest possible surface area. This general effect is called surface tension. Molecules on the surface are pulled inward by cohesive forces, reducing the surface area. Molecules inside the liquid experience zero net forc...
medmcqa
medmcqa_05_02508
Road traffic accident, a patient lying in right lateral position with bruise on face, elbow and lateral side of knee. Which nerve injury has maximum chances in this position of the victim?
[ "Trigeminal nerve", "Ulnar nerve", "Common peroneal nerve", "Tibial nerve" ]
C
Amongst the mentioned nerves most frequently injured nerve in lateral position will be the nerve that has maximum chances of injury due to compression against a bony prominence and that is common peroneal nerve near fibular neck.
openbookqa
obqa_02_02515
If I wanted to get more nutrients in my body I could consume
[ "magic", "smoothies", "my feelings", "my anger" ]
B
eating food is used to get nutrients by living things
sciq
sciq_01_04620
The brain and spinal cord are part of what system, which serves as a control center?
[ "central nervous system", "primary nervous system", "active nervous system", "large nervous system" ]
A
The central nervous includes the brain and spinal cord. The brain is the control center of the nervous system. It controls virtually all mental and physical processes. The spinal cord is a long, thin bundle of nervous tissue that passes messages from the body to the brain and from the brain to the body.
sciq
sciq_01_01153
In the nasal cavity, what 2 things trap particles from incoming air?
[ "phlegm and hair", "mucus and skin", "mucus and hair", "saliva and hair" ]
C
Air enters the respiratory system through the nose. As the air passes through the nasal cavity, mucus and hairs trap any particles in the air. The air is also warmed and moistened so it won’t harm delicate tissues of the lungs.
ARC-Easy
arc_04_01664
Which action illustrates a chemical change?
[ "painting a wood chest", "sawing a wood plank", "burning wood chips", "cutting down a tree" ]
C
null
openbookqa
obqa_02_03375
What is least likely to absorb light?
[ "windows", "space", "glass", "foil" ]
D
shiny things reflect light
openbookqa
obqa_02_03250
If a person wants to feed their pet alligator, they will stock up on
[ "broccoli", "sand", "guppy", "bread" ]
C
alligators eat fish
sciq
sciq_01_05505
What is the term for any way that an animal interacts with other animals or the environment?
[ "immunity", "animal behavior", "animal way", "animal biology" ]
B
Animal behavior is any way that an animal interact with other animals or the environment. An animal may carry out behaviors alone or with other animals. The photos in Figure below show just a few of the ways that animals behave. Look at the pictures and read about the behaviors they represent. Why do you think the anim...
medmcqa
medmcqa_05_02652
The cause of larva currens: March 2013
[ "Strongyloides stercoralis", "Necator americana", "Ankylostoma duodenale", "H. nana" ]
A
Ans. A i.e. Strongyloides stercoralis Larva cu-ens is an itchy, cutaneous condition caused by infections with Strongyloides stercoralis that intermittently comes and goes every few hours
openbookqa
obqa_02_00523
What happens when hexane's temperature goes above 70 degrees celsius?
[ "It melts", "it sublimates", "it boils", "It freezes" ]
C
boiling is when liquids are heated above their boiling point
math_qa
mathqa_03_00612
70 % of the employees of a company are men . 50 % of the men in the company speak french and 40 % of the employees of the company speak french . what is % of the women in the company who do not speak french ?
[ "4 %", "10 %", "83.33 %", "90.33 %" ]
C
"no of employees = 100 ( say ) men = 70 women = 30 men speaking french = 0.5 * 70 = 35 employees speaking french = 0.4 * 100 = 40 therefore women speaking french = 40 - 35 = 5 and women not speaking french = 30 - 5 = 25 % of women not speaking french = 25 / 30 * 100 = 83.33 % answer c"
sciq
sciq_01_11057
When solids change to gasses, they generally pass through what other state?
[ "liquid", "carbon", "frozen", "chemical" ]
A
Solids that change to gases generally first pass through the liquid state. However, sometimes solids change directly to gases and skip the liquid state. The reverse can also occur. Sometimes gases change directly to solids.
medmcqa
medmcqa_05_01901
What disappears first in post mortem rigidity -
[ "Eyelids", "Neck", "Lower limbs", "Upper limbs" ]
A
Rigor mortis passes off in same order in which it has appeared. Thus upper eyelid is the first voluntary muscles, from which it disappears.
openbookqa
obqa_02_01635
Molecular bounds are broken by
[ "ice", "combining vulotile ingredients", "soap and water", "force" ]
B
chemical reactions cause chemical change
ARC-Challenge
arc_04_02426
Michelle performed an investigation but the results did not match her hypothesis. What should Michelle do next?
[ "perform the investigation in a different way", "change the hypothesis to match the results", "choose a different investigation", "repeat the investigation" ]
D
null
sciq
sciq_01_09070
What do you call a condition caused by mutations in one or more genes?
[ "mutation disorder", "evolutionary disorder", "intrinsic disorder", "genetic disorder" ]
D
Mutations can result in errors in protein sequence, creating partially or completely non-functional proteins. These can obviously result in harm to the cell and organism. To function correctly and maintain homeostasis , each cell depends on thousands of proteins to all work together to perform the functions of the cell...
math_qa
mathqa_03_00228
the spherical ball of lead 3 cm in diameter is melted and recast into 3 spherical balls . the diameters of two of these are 1 ½ cm and 2 cm respectively . the diameter of third ball is ?
[ "2.66 cm", "2.5 cm", "3 cm", "3.5 cm" ]
B
4 / 3 π * 3 * 3 * 3 = 4 / 3 π [ ( 3 / 2 ) 3 + 23 + r 3 ] r = 1.25 d = 2.5 answer : b
sciq
sciq_01_03741
What includes all the biotic and abiotic factors in an area and how they interact?
[ "habitat", "ecosystem", "tundra", "biome" ]
B
An ecosystem is a unit of nature. It consists of all the biotic and abiotic factors in an area and all the ways in which they interact.
openbookqa
obqa_02_03189
A car running on a resource that will someday cease existing uses
[ "dino remains", "water power", "solar power", "electricity" ]
A
natural gas is a nonrenewable resource
sciq
sciq_01_07916
What forms when there is a difference in temperature between the land and the air?
[ "smoke", "tsunamis", "fog", "sandstorms" ]
C
Fog forms when there is a difference in temperature between the land and the air.
medmcqa
medmcqa_05_00834
Norwegian scabies is most commonly seen in?
[ "Immunocompromised individuals", "Infants", "Young adults", "Males" ]
A
Norwegian scabies: most severe type. Hyperkeratotic scaly and crusted lesions. Large number of mites but Pruritus is less. sites -scalp, face, palms, soles, neck, and lumbosacral area. old, bedridden patients, leprosy with decreased sensations & immunocompromised Rx: Patients with crusted scabies require 2 doses of IVE...
sciq
sciq_01_10830
In a scientific investigation, what do you call a direct, physical observation of something or a process?
[ "reason", "declaration", "evidence", "sighting" ]
C
Evidence is a direct, physical observation of something or a process.
sciq
sciq_01_05021
When does exchange of dna segments happen between non-sister chromatids of homologous chromosomes?
[ "during crossing-over", "during diversion", "during meiosis", "during mitosis" ]
A
During crossing-over, segments of DNA are exchanged between non-sister chromatids of homologous chromosomes. Notice how this can result in an allele (A) on one chromosome being moved to the other chromosome. The four chromatids compose the tetrad, with a chiasma at the point of exchange.
openbookqa
obqa_02_02580
If this fell on you, you would probably die
[ "a leaning tower", "a balloon", "a feather", "a towel" ]
A
buildings collapsing often cause death
openbookqa
obqa_02_03582
if weather is stormy then there is a greater chance of
[ "everything getting wet", "naps", "lottery wins", "lunch" ]
A
if weather is stormy then there is a greater chance of rain
medmcqa
medmcqa_05_00317
The function of 8th cranial N. is related to
[ "Smell", "Taste", "Touch", "Balance" ]
D
Balance The 8th cranial N. or vestibulo cochlear N. has two divisions:Cochlear division -4 concerned with hearingVestibular division concerned with equilibrium & balance
ARC-Challenge
arc_04_02948
What forms both valleys and canyons?
[ "glaciers", "rivers", "wind", "tides" ]
B
null
ARC-Challenge
arc_04_02655
If a book sitting on a flat table starts to move horizontally, it is most likely moving because
[ "a balanced force is being applied.", "a frictional force is being exerted.", "an unbalanced force is being applied.", "a gravitational force is being exerted." ]
C
null
math_qa
mathqa_03_04064
ajay and vijay have some marbles with them . ajay told vijay ` ` if you give me ' x ' marbles , both of us will have equal number of marbles ' ' . vijay then told ajay ` ` if you give me twice as many marbles , i will have 30 more marbles than you would ' ' . find ' x ' ?
[ "7", "5", "6", "4" ]
B
if vijay gives ' x ' marbles to ajay then vijay and ajay would have v - x and a + x marbles . v - x = a + x - - - ( 1 ) if ajay gives 2 x marbles to vijay then ajay and vijay would have a - 2 x and v + 2 x marbles . v + 2 x - ( a - 2 x ) = 30 = > v - a + 4 x = 30 - - - ( 2 ) from ( 1 ) we have v - a = 2 x substituting ...
medmcqa
medmcqa_05_00918
The orbital extension in choroid melanoma is treated with
[ "Radio therapy", "Enucleation", "Evisceration", "Exentration" ]
D
(Exenteration) (165-Khurana) (326-Kanski 5th) (356-P)Malignant melanoma of choroid - It is the most common primary intraocular tumour of adults (40-70 years) of age.TREATMENT1. Conservative treatment using cobalt plaques photocoagulation or cryocoagulation may be tried in small (under 7 mm) non progressive, posteriorly...
openbookqa
obqa_02_04275
A place where penguins exist with pods of black and white mammals is
[ "full of sand", "painted with cream", "uninhabitable by iguanas", "warm and windy" ]
C
the arctic environment is covered in snow
math_qa
mathqa_03_00684
in what time will a train 100 meters long cross an electric pole , if its speed is 144 km / hr
[ "8.5 seconds", "2.8 seconds", "3.5 seconds", "2.5 seconds" ]
D
"first convert speed into m / sec speed = 144 * ( 5 / 18 ) = 40 m / sec time = distance / speed = 100 / 40 = 2.5 seconds answer : d"
math_qa
mathqa_03_01627
the least number which must be subtracted from 509 to make it exactly divisible by 9 is :
[ "a", "b", "c", "d" ]
C
on dividing 509 by 9 , we get remainder = 5 therefore , required number to be subtracted = 5 answer : c
openbookqa
obqa_02_02239
When rain falls for two solid weeks, flooding will be evident
[ "at the middle of a mountain", "inside of the mountain", "at the base of a mountain", "at the top of a mountain" ]
C
as elevation of a place decreases , how much a flood will affect that place will increases
medmcqa
medmcqa_05_03101
Erythroblastosis fetalis is which type of hypersensitivity: September 2007, 2009
[ "Type I", "Type II", "Type III", "Type IV" ]
B
Ans. B: Type II Type I hypersensitivity is also known as immediate or anaphylactic hypersensitivity. The reaction may involve skin (uicaria and eczema), eyes (conjunctivitis), nasopharynx (rhinorrhea, rhinitis), bronchopulmonary tissues (asthma) and gastrointestinal tract (gastroenteritis). The reaction usually takes 1...
sciq
sciq_01_06805
Oxytocin, which stimulates the contractions of labor, is a type of what?
[ "inhibitor", "metabolite", "steroid", "hormone" ]
D
A common sign that labor will be short is the so-called “bloody show. ” During pregnancy, a plug of mucus accumulates in the cervical canal, blocking the entrance to the uterus. Approximately 1–2 days prior to the onset of true labor, this plug loosens and is expelled, along with a small amount of blood. Meanwhile, the...
sciq
sciq_01_11502
What type of cell transmits electrical impulses in the nervous system?
[ "Large Cell", "nerve cell", "toxin cell", "trace cell" ]
B
cell that transmits electrical impulses in the nervous system; commonly called nerve cell.
openbookqa
obqa_02_03454
a soil in a village seems to be nutrient deficient, what might have happened?
[ "the soil is angry", "the soil has been taken over by dogs", "the gods are angry", "there has been too much cultivation" ]
D
farming cause nutrients in the soil to decrease
sciq
sciq_01_06639
What according to scientists is the major cause of depression?
[ "high serotonin levels", "low thyroid levels", "high fat diets", "low serotonin levels" ]
D
Some people have low levels of the neurotransmitter called serotonin in their brain. Scientists think that this is one cause of depression. Medications called antidepressants help bring serotonin levels back to normal. For many people with depression, antidepressants control the symptoms of their depression and help th...
openbookqa
obqa_02_00336
When looking at an eclipse, an important thing to remember is
[ "to take a photograph", "to look through a window", "to use hands to shield eyes", "avert eyes at all costs" ]
D
looking directly at an eclipse of the Sun causes harm to the eyes
math_qa
mathqa_03_04553
in a certain parallelogram the degree measure of one angle exceeds that of the other by 70 what is the degree measure of the smaller angle ?
[ "55", "80", "85", "90" ]
A
in a parallelogram opposite angles are equal and the angles at each side are supplementary to each other ( supplementary angles are two angles that add up to 180 ° ) . given : x + ( x + 70 ) = 180 - - > x = 55 . answer : a .
sciq
sciq_01_08904
The three stages of transcription are initiation, elongation, and what?
[ "degradation", "termination", "separation", "prolongation" ]
B
math_qa
mathqa_03_02056
during a sale , the price of a pair of shoes is marked down 13 % from the regular price . after the sale ends , the price goes back to the original price . what is the percent of increase to the nearest percent from the sale price back to the regular price for the shoes ?
[ "9 %", "10 %", "11 %", "15 %" ]
D
"assume the price = 100 price during sale = 87 price after sale = 100 percent increase = 13 / 87 * 100 = 15 % approx . correct option : d"
sciq
sciq_01_07948
How many protons do all atoms of a particular element have in their nuclei?
[ "three", "varying number", "zero", "same number" ]
D
medmcqa
medmcqa_05_01449
Positive shick’s test indicates that person is :
[ "Immune to diphtheria", "Hypersensitive to diptheria", "Susceptible to diptheria", "Carrier of diphtheria" ]
C
Shick’s test Intradermal test which provide information regarding : a. Immune status, b. Hypersensitivity & susceptibility to diptheria toxin before giving active immunization.  In one arm toxin is injected (test arm) and in other arm heat inactivated toxin is injected (control arm).
math_qa
mathqa_03_01054
two vessels contains equal number of mixtures milk and water in the ratio 4 : 2 and 5 : 1 . both the mixtures are now mixed thoroughly . find the ratio of milk to water in the new mixture so obtained ?
[ "3 : 1", "9 : 13", "5 : 11", "11 : 3" ]
A
"the ratio of milk and water in the new vessel is = ( 4 / 6 + 5 / 6 ) : ( 2 / 6 + 1 / 6 ) = 9 / 6 : 3 / 6 = 3 : 1 answer is a"
math_qa
mathqa_03_04808
if a lends rs . 3500 to b at 10 % per annum and b lends the same sum to c at 11 % per annum then the gain of b in a period of 3 years is ?
[ "110", "106", "105", "107" ]
C
"( 3500 * 1 * 3 ) / 100 = > 105 answer : c"
sciq
sciq_01_10472
What is the name of the outer part of the adrenal gland located above the kidneys?
[ "mitochondria", "spleen", "nucleus", "cortex" ]
D
The two adrenal glands are located above the kidneys. Each gland has an inner and outer part. The outer part, called the cortex, secretes hormones such as cortisol, which helps the body deal with stress, and aldosterone, which helps regulate the balance of minerals in the body. The inner part of each adrenal gland, cal...
medmcqa
medmcqa_05_04767
A blood stained discharge from the nipple indicates
[ "Breast abscess", "Fibroadenoma", "Duct papilloma", "Fat necrosis of breast" ]
C
(Duct papilloma) (831 - Baity & Love 25th, 281- CSDT 13th)Blood discharge from nipple caused by benign papilloma in the ductCauses of blood stained discharge from nippleBlood stained discharge from a single ductMore than one duct,* Intraductal carcinoma* Intraductal papilloma*** Duct ectasia* Carcinoma* Ectasia* Fibroc...
sciq
sciq_01_05228
What may the jointed appendages of arthropods be used for?
[ "jumping", "walking", "crawling", "digging" ]
B
The jointed appendages of arthropods may be used as legs for walking. Being jointed makes them more flexible. Try walking or climbing stairs without bending your knees, and you’ll see why joints are helpful. In most arthropods, the appendages on the head have been modified for other functions. Figure below shows some o...
sciq
sciq_01_02395
What is the only planet we know that has plate techtonics?
[ "Mars", "Jupiter", "Saturn", "earth" ]
D
The Earth is divided into many plates. These plates move around on the surface. The plates collide or slide past each other. One may even plunge beneath another. Plate motions cause most geological activity. This activity includes earthquakes, volcanoes, and the buildup of mountains. The reason for plate movement is co...
math_qa
mathqa_03_01168
the area of a square is equal to five times the area of a rectangle of dimensions 36 cm * 20 cm . what is the perimeter of the square ?
[ "289 cm", "800 cm", "829 cm", "240 cm" ]
D
"area of the square = s * s = 5 ( 36 * 20 ) = > s = 60 = 60 cm perimeter of the square = 4 * 60 = 240 cm . answer : d"
openbookqa
obqa_02_04505
What drifts above the earth longer?
[ "an iron throne", "a rock", "a fat crowd-worker", "an inflatable toy" ]
D
a beach ball contains gas
openbookqa
obqa_02_00731
If a building suddenly collapses inward, the people working inside will likely
[ "go away", "steer clear", "depart earth", "walk away" ]
C
buildings collapsing often cause death
sciq
sciq_01_10328
Fusion is another nuclear process that can be used to produce energy. in this process, smaller nuclei are combined to make larger nuclei, with an accompanying release of this?
[ "food", "energy", "cells", "mineral" ]
B
Note The first controlled chain reaction was achieved on December 2, 1942, in an experiment supervised by Enrico Fermi in a laboratory underneath the football stadium at the University of Chicago. Although fairly simple in theory, an atomic bomb is difficult to produce, in part because uranium-235, the isotope that und...
sciq
sciq_01_04244
The cytoplasm of prokaryotic cells has a high concentration of dissolved solutes. therefore, the osmotic pressure within the cell is what?
[ "relative", "relatively high", "relatively normal", "relatively low" ]
B
The Cell Wall The cytoplasm of prokaryotic cells has a high concentration of dissolved solutes. Therefore, the osmotic pressure within the cell is relatively high. The cell wall is a protective layer that surrounds some cells and gives them shape and rigidity. It is located outside the cell membrane and prevents osmoti...
sciq
sciq_01_08223
Which organ is the control center of the nervous system?
[ "the spine", "the brain", "the lungs", "the heart" ]
B
What weighs about three pounds and contains up to 100 billion cells? The answer is the human brain. The brain is the control center of the nervous system. It’s like the pilot of a plane. It tells other parts of the nervous system what to do.
sciq
sciq_01_04423
What are vascular plants that produce seeds in cones called?
[ "evergreen", "deciduous", "gymnosperms", "angiosperms" ]
C
Gymnosperms are vascular plants that produce seeds in cones. Examples include conifers such as pine and spruce trees. The gymnosperm life cycle has a very dominant sporophyte generation. Both gametophytes and the next generation’s new sporophytes develop on the sporophyte parent plant. Figure below is a diagram of a gy...
medmcqa
medmcqa_05_01392
Duration of treatment in multibacillary leprosy according to WHO is -
[ "6 months", "1 year", "2 years", "5 years" ]
B
Ans. is 'b' i.e., 1 year
openbookqa
obqa_02_02092
A person approaching a dog from across a street can note that the dog
[ "looks tiny when nearer", "is minuscule in person", "looks more sizable after approaching", "looks smaller up close" ]
C
if an object is close then that object will appear large
sciq
sciq_01_00106
Renal plasma flow equals the blood flow per minute times the what?
[ "erythrocytes", "leukocytes", "hemoglobin", "hematocrit" ]
D
Renal plasma flow equals the blood flow per minute times the hematocrit. If a person has a hematocrit of 45, then the renal plasma flow is 55 percent. 1050*0.55 = 578 mL plasma/min.
math_qa
mathqa_03_04522
in a sample of college students , 20 percent are third year students and 80 percent are not second - year students . what fraction of those students who are not third - year students are second - year students ?
[ "1 / 4", "2 / 3", "4 / 7", "1 / 2" ]
A
"= 20 / 80 . = 1 / 4 my answer is a too"
medmcqa
medmcqa_05_03214
Facial artery gives rise to following branches
[ "Submental artery, ascending pharyngeal artery, tonsillar artery, posterior auricular artery", "Submental artery, ascending palatine artery, tonsillar artery, angular artery", "Tonsillar artery, submental artery, ascending pharyngeal artery, angular artery", "Tonsillar artery, submental artery, ascending phar...
B
Facial artery gives rise to : Submental artery. Tonsillar artery. Ascending palatine artery. Glandular artery. Superior and inferior labial artery. Lateral nasal artery. Angular artery.
math_qa
mathqa_03_00491
of the 200 employees at company x , 50 are full - time , and 150 have worked at company x for at least a year . there are 10 employees at company x who aren ’ t full - time and haven ’ t worked at company x for at least a year . how many full - time employees of company x have worked at the company for at least a year ...
[ "20", "30", "10", "80" ]
C
"200 employees 50 are full - time 150 have worked at company x for at least a year 10 employees at company x who aren ’ t full - time and haven ’ t worked at company x for at least a year . how many full - time employees of company x have worked at the company for at least a year ? 200 - 50 = 150 employees not full tim...
openbookqa
obqa_02_04119
Holding a hot dog over a campfire makes it
[ "carbon dioxide", "vegan", "a marshmallow", "stiffer" ]
D
cooking causes a chemical reaction
medmcqa
medmcqa_05_03666
Agent required to heal stress ulcers:
[ "H2 blockers", "Proton pump inhibitors", "Antacids", "Bismuth" ]
A
Ans. A. H2 blockersH2 blockers like ranitidine are the most effective drug in healing stress ulcer. Whereas PPI are most effective in inhibiting the gastric acid secretion.
sciq
sciq_01_10638
Where do organisms acquire toxic substances from along with nutrients and water?
[ "reproduction", "movement", "environment", "isolation" ]
C
ARC-Easy
arc_04_00329
Eye color is a physical trait. Which statement best explains why a child has a specific eye color?
[ "Eye color is a learned trait.", "Eye color is an inherited trait.", "Eye color is a trait that changes over time.", "Eye color is a trait that happens by chance." ]
B
null
sciq
sciq_01_04461
What does a keratometer measure in the cornea?
[ "Lenght", "Width", "diameter", "curve" ]
D
25.7 Image Formation by Mirrors 53. What is the focal length of a makeup mirror that has a power of 1.50 D? 54. Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a 800 mm focal length telephoto lens? 55. (a) Calculate the focal length of the mirror formed by th...
ARC-Easy
arc_04_00608
A student uses a telescope to view stars at night. The student notices some of the stars are different colors. The color of a star is determined most by its
[ "size.", "distance from Earth.", "mass.", "temperature." ]
D
null
openbookqa
obqa_02_02618
Which is likeliest to let a spark pass through?
[ "a wool sweater", "a t shirt", "a rubber eraser", "a soda can" ]
D
electrical conduction is when metals conduct electricity through metal
ARC-Easy
arc_04_01034
The water in a pond gets colder one night. Which tool is best to observe its temperature change?
[ "balance", "magnifying glass", "ruler", "thermometer" ]
D
null
sciq
sciq_01_10978
What kind of fertilization do birds have?
[ "internal fertilization", "asexual", "sensitive fertilization", "deep fertilization" ]
A
Birds reproduce sexually and have internal fertilization. Mating is generally preceded by courtship. Their amniotic eggs have hard shells and are laid in a nest. The eggs are usually incubated until they hatch. Most species have a relatively long period of parental care.