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sciq
sciq_01_09194
What organ eliminates solid wastes that remain after the digestion of food?
[ "the spleen", "the appendix", "the large intestine", "the bladder" ]
C
The large intestine eliminates solid wastes that remain after the digestion of food.
medmcqa
medmcqa_05_02631
Which of the following is amylin analogue-
[ "Exenatide", "Sitagliptin", "Pramlintide", "Glucomannan" ]
C
Ans. is 'c' i.e., Pramlintide
ARC-Challenge
arc_04_02345
Many cars are equipped with a catalytic converter, a device that helps remove hydrocarbons and oxides from car exhaust. As a result, this device helps to
[ "increase the production of ozone.", "decrease the production of smog.", "increase the emission of nitrogen.", "decrease the emission of carbon dioxide." ]
B
null
math_qa
mathqa_03_02493
a shopkeeper sold an article offering a discount of 5 % and earned a profit of 19.7 % . what would have been the percentage of profit earned if no discount was offered ?
[ "60 %", "26 %", "30 %", "56 %" ]
B
"let c . p . be rs . 100 . then , s . p . = rs . 19.70 let marked price be rs . x . then , 95 / 100 x = 119.70 x = 11970 / 95 = rs . 126 now , s . p . = rs . 126 , c . p . = rs . 100 profit % = 26 % . answer : b"
sciq
sciq_01_00574
According to count rumford, which two are equivalent ways of transferring energy?
[ "heat and work", "osmosis and heredity", "time and space", "addition and multiplication" ]
A
In the 1780s, an American scientist named Benjamin Thompson, also known as Count Rumford, was hired by the Elector of Bavaria to supervise the manufacture of cannons. During the manufacturing process, teams of horses harnessed to a large-toothed wheel supplied the power needed to drill a hole several inches in diameter...
sciq
sciq_01_05811
What performance-enhancing drugs are synthetic versions of the male sex hormone, testosterone?
[ "progesterone", "estrogen", "catabolic steroids", "anabolic steroids" ]
D
Anabolic Steroids The endocrine system can be exploited for illegal or unethical purposes. A prominent example of this is the use of steroid drugs by professional athletes. Commonly used for performance enhancement, anabolic steroids are synthetic versions of the male sex hormone, testosterone. By boosting natural leve...
math_qa
mathqa_03_01064
a car traveling at a certain constant speed takes 2 seconds longer to travel 1 kilometer than it would take to travel 1 kilometer at 900 kilometers per hour . at what speed , in kilometers per hour , is the car traveling ?
[ "671.5", "600", "672.5", "673" ]
B
"many approaches are possible , one of them : let the distance be 1 kilometer . time to cover this distance at 900 kilometers per hour is 1 / 900 hours = 3,600 / 900 seconds = 4 seconds ; time to cover this distance at regular speed is 900 + 2 = 902 seconds = 902 / 3,600 hours = 1 / 600 hours ; so , we get that to cove...
medmcqa
medmcqa_05_01305
A hypertensive patient with BP 160/90 mm of Hg presents with increased level of Lipoprotein a. Which Hypolipidemic drug will you prescribe?
[ "Fenofibrate", "Pitavastatin", "Niacin", "Ezetimibe" ]
C
Ans: (c) NiacinRef: SN Narasingan, Newer Lipid Guidelines: Interpretation and Applications for Indians. ttp://www.apiindia.org/pdf/medicine_update_2017/mu_155.pdfNiacin is the only drug that lowers lipoprotein (a).So, niacin may be preferable for individuals with lipoprotein (a) elevations.It causes maximum HDL increas...
ARC-Easy
arc_04_02066
Shale is a sedimentary rock that can be metamorphosed into slate by
[ "cementation.", "chemical weathering.", "sedimentation.", "increased pressure." ]
D
null
sciq
sciq_01_10971
Many observatories are built on high mountains to avoid interference from what?
[ "animal life", "artificial light", "airplanes", "the atmosphere" ]
D
Telescopes on Earth all have one big problem: incoming light must pass through the atmosphere. This blocks some wavelengths of radiation. Also, motion in the atmosphere distorts light. You see this when you see stars twinkling in the night sky. Many observatories are built on high mountains. There is less air above the...
medmcqa
medmcqa_05_04135
A 19 year old female patient with the chief complaint of crooked teeth, wants to undergo orthodontic treatment without undergoing extractions. On examination, mild lower incisor crowding was noted. Which of the following model analysis must be done before deciding a treatment plan for this patient?
[ "Linder Harth analysis", "Pont’s index", "Korkhaus analysis", "Peck and Peck index" ]
D
Interproximal reduction of enamel to accommodate minor crowding is a viable treatment option. The treatment with proximal re-contouring of the teeth can be extended from incisors to premolars and allows some of the cases to be treated with a non-extraction approach. The amount of proximal reduction on lower incisors ca...
sciq
sciq_01_01438
What term means the percent by mass of each element in a compound?
[ "molecular composition", "calculated composition", "mass composition", "percent composition" ]
D
Chemists often need to know what elements are present in a compound and in what percentage. The percent composition is the percent by mass of each element in a compound. It is calculated in a similar way that we just indicated for the peanut butter.
openbookqa
obqa_02_01528
A puppy was uneducated on how to go through a doggy door until
[ "the mom did it", "it read how to", "it went to school", "it made a plan" ]
A
animals learn some behaviors from watching their parents
math_qa
mathqa_03_01769
in a race of 1000 m , a can beat by 100 m , in a race of 800 m , b can beat c by 100 m . by how many meters will a beat c in a race of 900 m ?
[ "122.9 m", "127.5 m .", "191.25 m", "222.9 m" ]
C
"when a runs 1000 m , b runs 900 m and when b runs 800 m , c runs 700 m . when b runs 900 m , distance that c runs = ( 900 * 700 ) / 800 = 6300 / 8 = 787.5 m . in a race of 1000 m , a beats c by ( 1000 - 787.5 ) = 212.5 m to c . in a race of 900 m , the number of meters by which a beats c = ( 900 * 212.5 ) / 1000 = 191...
medmcqa
medmcqa_05_01017
Which of the following is contributory factor for developing Cor-pulmonale in chronic bronchitis
[ "Hypoxia", "Hypercapnea", "Acidosis", "Alkalosis" ]
A
(Hypoxia) (1453-54-H17th)COR- PULMONALE - denotes RV hypertrophy and eventual failure resulting from pulmonary disease and the attendent hypoxia or from pulmonary vascular diseaseEssentials of Diagnosis - Cor pulmonale* Symptoms and sign of chronic bronchitis and pulmonary emphysema* Elevated JVP, Parasternal lift, ede...
sciq
sciq_01_06618
Which factor has a big impact on coastal climates?
[ "large ocean currents", "tsunami", "ocean waves", "tide" ]
A
Large ocean currents can have a big impact on the climate of nearby coasts. The Gulf Stream, for example, carries warm water from near the equator up the eastern coast of North America. Look at the map in Figure below . It shows how the Gulf Stream warms both the water and land along the coast.
medmcqa
medmcqa_05_02456
Which of the following is a characteristic post moem finding of drowning?
[ "Dribbling of saliva", "Cherry red discolouration", "Paltauf's haemorrhages", "Pugilistic attitude" ]
C
Paltauf's haemorrhages are postmoem changes of drowning. The alveolar walls may rupture due to increased pressure during forced expirations, and produce hemorrhages, which when present subpleurally are called 'Paltauf's hemorrhages'. Paltauf' s haemorrhages are shining, pale bluish-red, and may be minute or 3-5 cm. in ...
sciq
sciq_01_01622
What is water falling from the sky called?
[ "erosion", "distillation", "precipitation", "vaporization" ]
C
sciq
sciq_01_03188
Half of the neurons formed in the embryo are eliminated because of _____________
[ "contraction", "competition", "cell death", "disease" ]
B
sciq
sciq_01_09323
Where does fertilization usually take place?
[ "vagina", "uterus", "fallopian tubes", "ovary" ]
C
A day or two after an ovary releases an egg, the egg may unite with a sperm. Sperm are deposited in the vagina during sexual intercourse. They propel themselves through the uterus and enter a fallopian tube . This is where fertilization usually takes place.
ARC-Easy
arc_04_00347
What is the smallest particle of the element gold (Au) that can still be classified as gold?
[ "atom", "molecule", "neutron", "proton" ]
A
null
sciq
sciq_01_11366
Which system in the human body consists of the heart, a network of blood vessels, and blood?
[ "circulatory system", "cardiac system", "cardiovascular system", "nervous system" ]
C
The cardiovascular system consists of the heart, a network of blood vessels, and blood. Blood is a liquid tissue. The heart is a pump that keeps blood flowing through the vessels of the system.
ARC-Easy
arc_04_01869
An atom with a +1 charge has
[ "lost a proton.", "lost an electron.", "gained a proton.", "gained an electron." ]
B
null
sciq
sciq_01_02039
What term refers to the emission of material or energy from an atom's nucleus?
[ "smog", "radioactivity", "stasis", "microscopic" ]
B
Radioactivity involves the spontaneous emission of material and/or energy from the nucleus of an atom. The most common radioactive atoms have high atomic numbers and contain a large excess of neutrons. Some typical radioactive elements are technetium (atomic number 43), promethium (atomic number 61), and all elements a...
sciq
sciq_01_05557
What concept can be applied to biology, because the structure of an organism, or part of an organism, depends on its function?
[ "form follows function", "form follows use", "motion follows function", "attachment follows function" ]
A
An important concept in biology is that form follows function. In other words, the structure of an organism, or part of an organism, depends on its function. Apply this concept to plants, and explain why plants have different types of cells and tissues.
sciq
sciq_01_08298
Mollusks such as squid and octopi, which must hunt to survive, possess what complex organs containing millions of neurons?
[ "tentacles", "gills", "hearts", "brains" ]
D
Figure 35.2 Nervous systems vary in structure and complexity. In (a) cnidarians, nerve cells form a decentralized nerve net. In (b) echinoderms, nerve cells are bundled into fibers called nerves. In animals exhibiting bilateral symmetry such as (c) planarians, neurons cluster into an anterior brain that processes infor...
math_qa
mathqa_03_00448
a boat goes 100 km downstream in 10 hours , and 200 km upstream in 25 hours . the speed of the stream is ?
[ "1", "22 1 / 7", "2", "22 1 / 2" ]
A
"100 - - - 10 ds = 10 ? - - - - 1 200 - - - - 30 us = 8 ? - - - - - 1 s = ( 10 - 8 ) / 2 = 1 kmph . answer : a"
openbookqa
obqa_02_02452
Which would be a good example of conservation?
[ "smoke stacks", "littering", "shorter showers", "car travel" ]
C
An example of conservation is not using fossil fuel
openbookqa
obqa_02_02950
A series of horrible earthquakes can effect deer populations by forcing
[ "relocation", "planting seeds", "breeding", "studying" ]
A
natural disasters can cause animals to leave an environment
math_qa
mathqa_03_03835
the average salary of 16 people in the shipping department at a certain firm is $ 20,000 . the salary of 5 of the employees is $ 25,000 each and the salary of 4 of the employees is $ 16,000 each . what is the average salary of the remaining employees ?
[ "$ 18,714", "$ 18,500", "$ 18,000", "$ 15,850" ]
A
total salary . . . 16 * 20 k = 320 k 5 emp @ 25 k = 125 k 4 emp @ 16 k = 64 k remaing 7 emp sal = 320 k - 125 k - 64 k = 131 k average = 131 k / 7 = 18714 ans : a
sciq
sciq_01_03629
What organism captures light energy and converts it to chemical energy inside its cell?
[ "plants", "phototrophs", "insects", "autotrophs" ]
B
Because glaciers move, they have characteristic features like crevasses and bergshrunds.
sciq
sciq_01_07036
Where is the cell wall located?
[ "outside cell membrane", "in cell membrane", "in the chloroplast", "in the mitochondria" ]
A
The cell wall is located outside the cell membrane. It consists mainly of cellulose and may also contain lignin, which makes it more rigid. The cell wall shapes, supports, and protects the cell. It prevents the cell from absorbing too much water and bursting. It also keeps large, damaging molecules out of the cell.
sciq
sciq_01_04916
The study of energy and energy transfer involving physical matter is what?
[ "geology", "biochemistry", "nuclear energy", "thermodynamics" ]
D
Energy Thermodynamics refers to the study of energy and energy transfer involving physical matter. The matter relevant to a particular case of energy transfer is called a system, and everything outside of that matter is called the surroundings. For instance, when heating a pot of water on the stove, the system includes...
math_qa
mathqa_03_03799
50 boys and 100 girls are examined in a test ; 50 % of the boys and 40 % of the girls pass . the percentage of the total who failed is ?
[ "42.5 %", "62.1 %", "56.7 %", "39.9 %" ]
C
"total number of students = 50 + 100 = 150 number of students passed = ( 50 % of 50 + 40 % of 100 ) = 25 + 40 = 65 number of failures = 85 * 100 / 150 = 56.7 % answer is c"
sciq
sciq_01_11491
What type of relationship is parasitism?
[ "hypodermic relationship", "primordial relationship", "symbiotic relationship", "enzymatic relationship" ]
C
Parasitism is a symbiotic relationship in which one species benefits and the other species is harmed. The species that benefits is called the parasite. The species that is harmed is called the host. Many species of animals are parasites, at least during some stage of their life cycle. Most animal species are also hosts...
sciq
sciq_01_05485
Land could not be colonized by other organisms until what became established?
[ "plants", "oxygen", "gases", "carbon dioxide" ]
A
All that changed when plants moved from water to land. This may have happened by 500 million years ago or even earlier. On land, everything was wide open. There were no other living things. Without plants, there was nothing for other organisms to eat. Land could not be colonized by other organisms until land plants bec...
sciq
sciq_01_09072
When do glaciers deposit their sediment?
[ "when they melt", "when they move", "when they are new", "when they form" ]
A
Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.
medmcqa
medmcqa_05_02188
A patient with history of RTA is seen at emergency department. He has an open injury of Gustilo- Anderson type III B. What does this indicate?
[ "Bilateral limb wound >10 cm with extensive laceration", "Bilateral limb wound of size <1 cm", "Bilateral limb wound >10 cm with extensive soft tissue damaged periosteal strip", "Wound between 1 and 10 cm in length, without extensive soft tissue damage, flaps or avulsion" ]
C
ANS. CGustilo and Anderson classification system of open fracturesClassification DescriptionType 1* Puncture wound of less than or equal to 1 cm with minimal soft tissure injury* Minimal wound contamination or muscle crushingType 2* Wound is greater than 1 cm in length* Moderate soft-tissue injury* Soft tissue coverage...
sciq
sciq_01_01273
What is light with wavelengths shorter than visible light called?
[ "weathering light", "infrared light", "radio waves", "ultraviolet light" ]
D
Light with wavelengths shorter than visible light is called ultraviolet light . The term ultraviolet means “above violet. ” Ultraviolet light is the range of light waves that have shorter wavelengths and higher frequencies than violet light in the visible range of light. With higher frequencies than visible light, ultr...
sciq
sciq_01_11615
What type of cartilage contains no collagen?
[ "lamprey cartilage", "fetal cartilage", "joint cartilage", "shark cartilage" ]
A
openbookqa
obqa_02_02639
Which pollutant is most likely caused by humans activity?
[ "bricks", "bovine farts", "rocks", "oxygen" ]
B
pollution is when humans pollute the environment with pollutants
sciq
sciq_01_04876
What single-celled organism can be either a predator, decomposer, herbivore, or parasite in the food chain?
[ "Diatoms", "protozoa", "mites", "vertebrates" ]
B
Protozoa generally feed by engulfing and digesting other organisms. As consumers, they have various roles in food chains and webs. Some are predators. They prey upon other single-celled organisms, such as bacteria. In fact, protozoa predators keep many bacterial populations in check. Other protozoa are herbivores. They...
openbookqa
obqa_02_01797
Which is a pollinating creature?
[ "hyenas", "lions", "honey makers", "rhinos" ]
C
A bee is a pollinating animal
sciq
sciq_01_03423
Foliation, which forms layers in rocks during metamorphism, is caused by what?
[ "pressure", "push", "power", "Pulling" ]
A
During metamorphism a rock may change chemically. Ions move and new minerals form. The new minerals are more stable in the new environment. Extreme pressure may lead to physical changes like foliation . Foliation forms as the rocks are squeezed. If pressure is exerted from one direction, the rock forms layers. This is ...
ARC-Easy
arc_04_01865
Which is an example of melting?
[ "Flowing water making a rock smooth", "A carrot becoming soft when cooked", "Sugar mixed into tea making the tea sweet", "Butter changing into liquid in a warm pan" ]
D
null
math_qa
mathqa_03_01379
working alone , printers x , y , and z can do a certain printing job , consisting of a large number of pages , in 12 , 30 , and 40 hours , respectively . what is the ratio of the time it takes printer x to do the job , working alone at its rate , to the time it takes printers y and z to do the job , working together at...
[ "4 / 11", "1 / 2", "15 / 22", "120 / 7" ]
D
"p 1 takes 12 hrs rate for p 2 p 3 together = 1 / 30 + 1 / 40 = 7 / 120 therefore they take 120 / 7 ratio = 120 / 7 = d"
sciq
sciq_01_09852
What system of the body uses amylase and pepsin in its functioning?
[ "digestive system", "respiratory system", "hormonal system", "circulatory system" ]
A
Top: Flickr:LearningLark; Bottom: Laura Guerin (CK-12 Foundation). Amylase and pepsin are used in our digestive system . Top: CC BY 2.0; Bottom: CC BY-NC 3.0.
sciq
sciq_01_07619
What kind of relay occurs between the uterus, hypothalamus, and the posterior pituitary to assure an adequate supply of the hormone oxytocin during childbirth?
[ "currents feedback", "affirmative feedback", "pressure feedback", "positive feedback" ]
D
Labor and Birth Labor is the physical efforts of expulsion of the fetus and the placenta from the uterus during birth (parturition). Toward the end of the third trimester, estrogen causes receptors on the uterine wall to develop and bind the hormone oxytocin. At this time, the baby reorients, facing forward and down wi...
ARC-Easy
arc_04_00925
Which change would most likely cause deer to die or leave a woodland?
[ "a forest fire", "a rainstorm", "a snow storm", "a sinkhole" ]
A
null
ARC-Easy
arc_04_01029
The part of the rock cycle that transforms compressed rock formed from sea organism shells into a harder, denser rock is
[ "igneous rock becoming sedimentary rock.", "igneous rock becoming metamorphic rock.", "metamorphic rock becoming igneous rock.", "sedimentary rock becoming metamorphic rock." ]
D
null
sciq
sciq_01_09104
Radiocarbon is useful for dating relatively young materials with what element as their base?
[ "carbon", "hydrogen", "oxygen", "nitrogen" ]
A
Radiocarbon is useful for relatively young, carbon-based materials. Other longer-lived isotopes are good for older rocks and minerals.
ARC-Easy
arc_04_01820
Which of these conditions would most likely be shown in the fossil record as a reason for mass extinctions?
[ "increased competition for resources", "falling sea levels and global cooling", "organisms with beneficial traits", "increased solar activity" ]
B
null
medmcqa
medmcqa_05_00387
Which of the following hepatitis viruses is a DNA virus ?
[ "Hepatitis C virus", "Hepatitis B virus", "Delta agent", "Hepatitis E virus" ]
B
Ans. is 'b' i.e., Hepatitis B virus Hepatitis B virus (HBV) Hepatitis B virus is the most widespread virus and the most impoant cause of viral hepatitis. o HBV belongs to Hepadna viridae HBV is hepadnavirus type -1 Hepatitis B is the only hepatitis virus which has DNA. All others are RNA viruses. HBV contains two linea...
medmcqa
medmcqa_05_01878
Drug used to avoid recurrence of pterygium: March 2011
[ "Amphotericin-B", "Netilmycin", "Griesofulvin", "Mitomycin C" ]
D
Ans. D: Mitomycin- C A pterygium sometimes recurs after removal. Post-operative therapy with Mitomycin-C drops has been tried, but complications such as scleral necrosis, cataract and iritis have been repoed Pterygium/ Surfer's Eye It most often refers to a benign growth of the conjunctiva. A pterygium commonly grows f...
medmcqa
medmcqa_05_03897
A child presented with anemia, kinky hair, intellectual disability and seizures. Which of the following is the most likely diagnosis?
[ "Menkes disease", "Down syndrome", "Iron deficiency anemia", "Lesch Nyhan syndrome" ]
A
a. Menkes disease(Ref: Nelson 20/e p 1849)Menke disease is a X-linked recessive multisystem disorder that mainly involves CNS & usually presents in early infancy. Scalp hair become hypopigmented, sparse, short, and brittle. Hair microscopy reveals pili torti (twisted hair) & trichorrhexis nodosa (fractures of the hair ...
sciq
sciq_01_06822
The chemistry of each element is determined by its number of what?
[ "protons and neutrons", "electrons and neutrons", "protons and electrons", "nuclei and neutrons" ]
C
assigned a unique one-, two-, or three-letter symbol. The names of the elements are listed in the periodic table, along with their symbols, atomic numbers, and atomic masses. The chemistry of each element is determined by its number of protons and electrons. In a neutral atom, the number of electrons equals the number ...
ARC-Challenge
arc_04_02964
Some foods that humans eat, such as corn and peas, are actually seeds from plants. What best describes the role of humans in a food web containing these plants?
[ "a consumer", "a decomposer", "a producer", "a scavenger" ]
A
null
sciq
sciq_01_02977
Which members of the food chain break down remains of plants and other organisms when they die?
[ "Respiration", "decomposers", "fluxes", "nematodes" ]
B
When plants and other organisms die, decomposers break down their remains. In the process, they release nitrogen in the form of ammonium ions. Nitrifying bacteria change the ammonium ions into nitrates. Some of the nitrates are used by plants. Some are changed back to nitrogen gas by denitrifying bacteria.
math_qa
mathqa_03_00364
an order was placed for a carpet whose length and width were in the ratio of 3 : 2 . subsequently , the dimensions of the carpet were altered such that its length and width were in the ratio 4 : 1 but were was no change in its perimeter . what is the ratio of the areas of the carpets ?
[ "5 : 8'", "3 : 2'", "6 : 1'", "8 : 7'" ]
B
let the length and width of one carpet be 3 x and 2 x . let the length and width of the other carpet be 4 y and y . 2 ( 3 x + 2 x ) = 2 ( 4 y + y ) 5 x = 5 y x = y the ratio of the areas of the carpet in both cases : = 3 x * 2 x : 4 y * y = 6 x ^ 2 : 4 y ^ 2 = 6 x ^ 2 : 4 x ^ 2 = 6 : 4 = 3 : 2 the answer is b .
sciq
sciq_01_07978
Real gases deviate from ideal form at high pressure and what other thermodynamic condition?
[ "high temperatures", "low temperatures", "low pressure", "high winds" ]
B
Real gases deviate from ideal gases at high pressures and at low temperatures.
medmcqa
medmcqa_05_00141
What is produced by lung tissue to be used in lungs-
[ "Angiotensin I", "Renin", "Surfactant", "Angiotensin II" ]
C
Ans. is 'c' i.e., Surfactant * Among the given options, two substances are formed in lung-i) Surfactant: Used by lungs alveoli to reduce surface tension.ii) Angiotensin II: ACE in lungs convert angiotensin I to angiotensin II. But angiotensin II mainly acts on blood vessels, kidney and adrenal cortex. Actions of angiot...
openbookqa
obqa_02_03767
which one of these places would a person have the least need for a clothes dryer?
[ "in the tropical rain forest", "in a humid cave", "in the hot desert", "in a wet town" ]
C
a desert environment is dry
openbookqa
obqa_02_04565
Marshmallows plus ____ technically make a different substance.
[ "steak", "cookies", "chocolate", "fire" ]
D
chemical reactions cause different substances to form
sciq
sciq_01_09719
Through what system of the body do hormones generally travel?
[ "circulatory system", "excretory", "respiratory", "endocrine" ]
A
ARC-Challenge
arc_04_02922
Most of the volume of the universe is found in the space between galaxies. Objects found in the regions between galaxies are most likely to be closest in size to which of these?
[ "a dust particle", "an asteroid", "a planet", "a star" ]
A
null
medmcqa
medmcqa_05_02095
Enantiomers are isomers that differ in structure at which carbon :
[ "Last Carbon", "First Carbon", "Penultimate Carbon", "Carbonyl Carbon" ]
C
Enantiomers have different -H and -OH orientation around the penultimate carbon /2nd last carbon/Reference carbon. E.g-. D-and L-Glyceraldehyde. Also known as Mirror images of each other.
ARC-Easy
arc_04_01748
The change from day to night on Earth can be explained by
[ "the movement of the Sun.", "the rotation of Earth.", "the movement of the Moon.", "the tilt of Earth." ]
B
null
medmcqa
medmcqa_05_02538
Direct coomb&;s test detects -
[ "Antigen in serum", "Antibodies in RBC surface", "Antigen in RBC surface", "Antibodies in serum" ]
B
Detection of antibodies or complements on red cell is detected by direct coombs test.Here patients red cell are mixed with sera containing Ab that are specific for human Ig or complement.If either of these is present on surface of ted cells,the antibodies cause agglutination which is easily appreciated visually as clum...
openbookqa
obqa_02_02038
Which of these is a learned characteristic?
[ "long hair", "a big nose", "doing laundry", "blue eyes" ]
C
doing chores is a learned characteristic
math_qa
mathqa_03_02552
how many 3 - digit even numbers are possible such that if one of the digits is 5 , the next / succeeding digit to it should be 1 ?
[ "5", "305", "365", "405" ]
A
510 , 512 , 514 , 516 , and 518 , so total 5 . hence option a .
sciq
sciq_01_01535
The sites of protein synthesis are tiny structures called?
[ "ribosomes", "protons", "prokaryotes", "crystals" ]
A
math_qa
mathqa_03_02492
at the wholesale store you can buy an 8 - pack of hot dogs for $ 1.55 , a 20 - pack for $ 3.05 , and a 300 - pack for $ 22.95 . what is the greatest number of hot dogs you can buy at this store with $ 200 ?
[ "1,108", "2,500", "2,108", "2,124" ]
B
"we have $ 200 and we have to maximize the number of hot dogs that we can buy with this amount . let ' s try to find out what is the maximum number of hot dogs that we can buy for a lesser amount of money , which in this case is 300 for $ 22.95 . for the sake of calculation , let ' s take $ 23 . 23 x 8 gives 184 , i . ...
medmcqa
medmcqa_05_02648
Intravenous induction is preferred to inhalation induction because:
[ "Causes less side effects", "Blood pressure and cardiac output are better maintained", "There is less danger of respiratory obstruction", "It is quicker" ]
D
Intravenous induction is faster, smoother and less anxiety causing mode of induction. inhalational induction is only done when intravenous is not possible.
ARC-Easy
arc_04_01196
Joanne wants to investigate factors that affect different patterns of the flight of bees. Which step in the scientific method must she follow before forming a hypothesis?
[ "record data of numbers of bees", "measure the distances of bee flights", "draw a conclusion about when bees fly", "gather information about flight patterns" ]
D
null
sciq
sciq_01_06966
What is the organ that senses sound?
[ "eye", "nose", "ear", "skin" ]
C
Hearing is the ability to sense sound waves, and the ear is the organ that senses sound. Sound waves enter the auditory canal and travel to the eardrum (see Figure below ). They strike the eardrum and make it vibrate. The vibrations then travel through several other structures inside the ear and reach the cochlea. The ...
medmcqa
medmcqa_05_04214
Anti fibrillarin antibodies are met with ?
[ "Rheumatoid Ahritis", "Systemic Lupus Erythematosis", "Mixed Connective Tissue disease", "Systemic scerosis" ]
D
Ans. is 'd' i.e., Systemic sclerosisAntifibrillin antibodies are found in ?Scleroderma (systemic sclerosis)Type I DM (IDDM)Marfan syndrome
sciq
sciq_01_02090
How many electrons are in the hydrogen atom?
[ "two", "three", "five", "one" ]
D
For the hydrogen atom, there is no problem since there is only one electron in the H atom. However, when we get to helium we see that the first three quantum numbers for the two electrons are the same: same energy level, same spherical shape. What differentiates the two helium electrons is their spin. One of the electr...
openbookqa
obqa_02_01907
A person playing a song on a string instrument makes strings
[ "mold", "bawl", "tear", "shudder" ]
D
strumming a string can cause that string to vibrate
medmcqa
medmcqa_05_01094
A 54-yrs-old male develops of severe chest pain. ECG shows acute MI. He was given thrombolytic therapy with tPA. However, his serum creatine kinase increased after this therapy. Which event most likely occurred?
[ "Reperfusion injury", "Cellular regeneration", "Chemical injury", "Increased synthesis of creatine kinase" ]
A
The restoration of blood flow is helpful if the existing cell damage is: not great, and fuher damage can be prevented. However, the reperfusion of damaged cells results in generation of oxygen-derived free' radicals to produce a reperfusion injury. The elevation in the creatine kinase level is indicative of myocardial ...
sciq
sciq_01_07390
Where does the process of assembling amino acids into a protein take place?
[ "in the nucleus", "in chromosomes", "in the chitin", "in the ribosome" ]
D
The process of assembling amino acids into a protein takes place in the ribosome. This structure consists of two subunits, each of which is composed of both proteins and ribosomal RNA (rRNA). The two subunits clamp together on the mRNA and catalyze the formation of the amide linkages in the growing protein. When protei...
medmcqa
medmcqa_05_02828
Which is not included in NVBDCP ?
[ "Dengue", "Malaria", "Japanese encephalitis", "Plague" ]
D
Ans. is 'd' i.e., Plague NVBDCP includes 6 vector borne diseases of public health impoance in India : Malaria Kala-azar Dengue Japenese encephalitis Filaria Chikungunya fever
sciq
sciq_01_05669
Biochemistry is the study of the chemistry of?
[ "inorganic matter", "abiotic factors", "living systems", "the Earth" ]
C
The related field of biochemistry overlaps to some extent with organic chemistry. Biochemistry is the study of the chemistry of living systems. Many biochemical compounds are considered to be organic chemicals. Both of the molecules shown above are biochemical materials in terms of their use in the body, but organic ch...
sciq
sciq_01_00804
What is a sheet of muscle that spreads across the bottom of the rib cage?
[ "thorax", "diagram", "cartilage", "diaphragm" ]
D
The diaphragm is a sheet of muscle that spreads across the bottom of the rib cage. When the diaphragm contracts, the chest volume gets larger, and the lungs take in air. When the diaphragm relaxes, the chest volume gets smaller, and air is pushed out of the lungs.
math_qa
mathqa_03_00478
water is leaking out from a cylinder container at the rate of 0.31 m ^ 3 per minute . after 10 minutes , the water level decreases 4 meters . what is value of the radius ?
[ "0.5", "1.0", "1.5", "2.0" ]
A
"10 * 0.31 = 3.1 m ^ 3 = pi * r ^ 2 * h r ^ 2 = 3.1 / ( pi * 4 ) which is about 1 / 4 r = 1 / 2 the answer is a ."
openbookqa
obqa_02_03347
which of these eventually form crude oil after millions of years in the earth?
[ "a plastic set of cups", "a family of dogs", "a twelve pack of beer cans", "a set of silverware" ]
B
an organism is a source of organic material
sciq
sciq_01_03403
Since 1900, four of the five earthquakes of the greatest magnitude occurred near what appropriately nicknamed pacific location?
[ "quake epicenter", "ring of fire", "shower of fire", "seismic zone" ]
B
Earthquakes with a magnitude in the 9 range are rare. The United States Geological Survey lists five such earthquakes on the moment magnitude scale since 1900 (see Figure below ). All but one, the Great Indian Ocean Earthquake of 2004, occurred somewhere around the Pacific Ring of Fire.
sciq
sciq_01_11367
Volume is another way of measuring what?
[ "height", "weight", "length", "material" ]
D
Volume is another way of measuring material. Gases cannot be easily weighed, but their volume can be determined quickly and accurately. Liquid chemicals as well as foods and beverages are also sold by volume. Gasoline for our cars and trucks is sold by the gallon. At the grocery store, we can buy a gallon of milk or a ...
sciq
sciq_01_06403
How many lobes is each hemisphere of the cerebrum divided into?
[ "4", "9", "5", "2" ]
A
Each hemisphere of the cerebrum is divided into four parts, called lobes. The four lobes are the:.
openbookqa
obqa_02_04393
Your clothes likely will be soaked if the skies are
[ "sunny without clouds", "light blue", "black", "clear" ]
C
if weather is stormy then there is a greater chance of rain
sciq
sciq_01_09264
Nonshivering thermogenesis, which involves the breakdown of brown adipose tissue, is a special methods newborns have for what purpose?
[ "harnessing heat", "moving heat", "generating heat", "losing heat" ]
C
Thermoregulatory Adjustments The fetus floats in warm amniotic fluid that is maintained at a temperature of approximately 98.6°F with very little fluctuation. Birth exposes newborns to a cooler environment in which they have to regulate their own body temperature. Newborns have a higher ratio of surface area to volume ...
sciq
sciq_01_01794
Where does a baby travel to after leaving the uterus?
[ "tissue canal", "ear canal", "birth canal", "nasal canal" ]
C
Some processes in the body are regulated by positive feedback. Positive feedback is when a response to an event increases the likelihood of the event to continue. An example of positive feedback is milk production in nursing mothers. As the baby drinks her mother's milk, the hormone prolactin, a chemical signal, is rel...
math_qa
mathqa_03_00905
if k and w are the dimensions of a rectangle that has area 20 and if k and w are integers such that k > w , what is the total number of possible values of k ?
[ "two'", "three'", "four'", "five'" ]
B
kw = 20 = 20 * 1 = 10 * 2 = 5 * 4 - - > k can take 3 values , answer : b
sciq
sciq_01_11297
What is it called when a mistake occurs in dna replication.
[ "radiation", "adaptation", "mutation", "degradation" ]
C
Mutations have many possible causes. Some mutations occur when a mistake is made during DNA replication or transcription. Other mutations occur because of environmental factors. Anything in the environment that causes a mutation is known as a mutagen . Examples of mutagens are shown in Figure below . They include ultra...
sciq
sciq_01_06375
The nervous system is characterized by electrical signals that are sent from one area to another. whether those areas are close or very far apart, the signal must travel along this?
[ "tendons", "axial", "axon", "hairs" ]
C
12.4 The Action Potential The nervous system is characterized by electrical signals that are sent from one area to another. Whether those areas are close or very far apart, the signal must travel along an axon. The basis of the electrical signal is the controlled distribution of ions across the membrane. Transmembrane ...
sciq
sciq_01_01766
Name the multi-phase process in which the nucleus of a eukaryotic cell divides?
[ "cytokinesis", "meiosis", "symbiosis", "mitosis" ]
D
Mitosis in the Eukaryotic Cell Cycle. Mitosis is the multi-phase process in which the nucleus of a eukaryotic cell divides. In this diagram, prometaphase is not included as a separate phase, but incorporated into prophase.
sciq
sciq_01_02764
Saltwater is a homogeneous mixture, another term for what?
[ "lipid", "solution", "structure", "element" ]
B
Solution 1. Saltwater acts as if it were a single substance even though it contains two substances—salt and water. Saltwater is a homogeneous mixture, or a solution. Soil is composed of small pieces of a variety of materials, so it is a heterogeneous mixture. Water is a substance; more specifically, because water is co...
math_qa
mathqa_03_01137
what is 25 % of 4 / 12 of 520 ?
[ "49", "56", "60", "43" ]
D
25 % = 25 / 100 = 1 / 4 of 4 / 12 = 1 / 4 * 4 / 12 = 1 / 12 of 520 = 1 / 12 * 520 = 43.33 = = 43 ans - d
math_qa
mathqa_03_04695
every disk in a bag is either blue , yellow or green . the ratio of blue disks to yellow disks to green disks in this bag is 3 : 7 : 8 . if the total number of disks in the bag is 108 , how many more green disks than blue disks are in the bag ?
[ "25", "28", "30", "35" ]
C
"let b : y : g = 3 x : 7 x : 8 x . 3 x + 7 x + 8 x = 18 x = 108 - - > x = 6 . g - b = 8 x - 3 x = 5 x = 30 . the answer is c ."
openbookqa
obqa_02_04603
Which of these are inherited instead of acquired?
[ "wealth", "height", "prison time served", "wisdom" ]
B
the shape of body parts is an inherited characteristic
ARC-Challenge
arc_04_03089
Sam builds a ramp and lets a toy car roll down. Which describes the energy of the car as it rolls down the ramp?
[ "The kinetic energy and the potential energy both increase.", "The kinetic energy and the potential energy both decrease.", "The kinetic energy increases and the potential energy decreases.", "The kinetic energy decreases and the potential energy increases." ]
C
null