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math_qa
mathqa_03_03408
a river 5 m deep and 35 m wide is flowing at the rate of 2 kmph , calculate the amount of water that runs into the sea per minute ?
[ "5832.75", "5839.75", "5837.75", "5222.75" ]
A
"rate of water flow - 2 kmph - - 2000 / 60 - - 33.33 m / min depth of river - - 5 m width of river - - 35 m vol of water per min - - 33.33 * 5 * 35 - - - 5832.75 answer a"
ARC-Easy
arc_04_01468
A small, fast-moving river in is in a V-shaped valley on the slope of a mountain. If you follow the river to where it passes through a plain, what will the river most likely look like compared with how it looked on the mountain?
[ "Much the same", "Deeper and faster", "Slower and wider", "Straighter" ]
C
null
sciq
sciq_01_04195
What is located at the center of our solar system?
[ "the moon", "the sun", "a black hole", "the earth" ]
B
sciq
sciq_01_07245
The environment where most chemical reactions in organisms takes place consists mostly of what?
[ "sodium", "air", "helium", "water" ]
D
Most chemical reactions in organisms take place in an environment that is mostly water.
openbookqa
obqa_02_03783
A sea cow would be most uncomfortable in
[ "a desert", "a fjord", "an ocean park", "lots of water" ]
A
a desert environment is low in availability of water
math_qa
mathqa_03_02876
a textile manufacturing firm employees 50 looms . it makes fabrics for a branded company . the aggregate sales value of the output of the 50 looms is rs 5 , 00,000 and the monthly manufacturing expenses is rs 1 , 50,000 . assume that each loom contributes equally to the sales and manufacturing expenses are evenly sprea...
[ "13000", "7000", "10000", "5000" ]
B
"explanation : profit = 5 , 00,000 − ( 1 , 50,000 + 75,000 ) = rs . 2 , 75,000 . since , such loom contributes equally to sales and manufacturing expenses . but the monthly charges are fixed at rs 75,000 . if one loan breaks down sales and expenses will decrease . new profit : - = > 500000 × ( 49 / 50 ) − 150000 × ( 49...
ARC-Challenge
arc_04_02324
Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion?
[ "ball with a mass of 5 kg", "ball with a mass of 10 kg", "ball with a mass of 15 kg", "ball with a mass of 20 kg" ]
D
null
math_qa
mathqa_03_02226
when 15 is divided by integer u , the remainder is 4 . for how many values of u is this be true ?
[ "1", "2", "3", "4" ]
A
when 15 is divided by u , the remainder is 4 i . e . 4 mangoes left over after grouping , so u must be greater than 4 . it also means that 11 is completely divisible by u . factors of 11 are 1 and 11 . out of these , u could be 11 . answer ( a )
medmcqa
medmcqa_05_04221
Isoniazid is NOT given in:
[ "Renal disease", "Liver disease", "Diabetes mellitus", "Hypertension" ]
B
Ref: KD Tripathi, 7th ed. pg. 767* INH is hepatotoxic and is avoided in pre-existing liver disease* Isoniazid is an essential component of all anti-tubercular regimens. It is primarily tuberculocidal.* Fast multiplying organisms are rapidly killed, but quiescent ones are only inhibited.* The most common mechanism which...
sciq
sciq_01_07915
What is the diffusion of water molecules across a semipermeable membrane?
[ "active transport", "organelle motion", "osmosis", "electrolysis" ]
C
Osmosis is the diffusion of water molecules across a semipermeable membrane and down a concentration gradient. They can move into or out of a cell, depending on the concentration of the solute.
math_qa
mathqa_03_04427
if 50 % of 3 / 5 of a number is 36 , then the number is ?
[ "120", "100", "75", "90" ]
A
let the number be x . then 50 % of 3 / 5 of x = 36 50 / 100 * 3 / 5 * x = 36 x = ( 36 * 10 / 3 ) = 120 required number = 120 . correct option : a
sciq
sciq_01_06520
What do atoms make by rearranging their chemical bonds in a reactant?
[ "compounds", "solutions", "minerals", "products" ]
D
When a chemical reaction occurs, the atoms in the reactants rearrange their chemical bonds to make products. The new arrangement of bonds does not have the same total energy as the bonds in the reactants. Therefore, when chemical reactions occur, there will always be an accompanying energy change. In some reactions, th...
openbookqa
obqa_02_01510
audible vibrations can travel freely through
[ "a brick", "nitrogen and oxygen", "the ground", "a mountain" ]
B
sound can travel through air
openbookqa
obqa_02_01622
If an area of land is sloped to the right and a body of water is on that slope, then the river will flow
[ "pollution", "to the right", "species", "to the left" ]
B
the slope of the land causes a river to flow in a particular direction
math_qa
mathqa_03_04069
the monthly rent of a shop of dimension 20 feet × 18 feet is rs . 1440 . what is the annual rent per square foot of the shop ?
[ "48'", "56'", "68'", "87'" ]
A
sol . monthly rent per square feet = 1440 / ( 20 * 18 ) = 4 & annual rent per square feet = 12 * 4 = 48 answer : a
medmcqa
medmcqa_05_04067
Cystitis is most commonly caused by :
[ "E. coli", "Pseudomonas", "Proteus mirabilis", "Neisseria gonorrhea" ]
A
E. coli
openbookqa
obqa_02_04349
What's used by migrating animals to find locations?
[ "global positioning system satellites", "a sense of smell", "our planet's magnetic patterns", "the stars in the night sky" ]
C
Earth 's magnetic patterns are used for finding locations by animals that migrate
openbookqa
obqa_02_00031
an example of an excellent earth mover is
[ "cat", "dog", "annelids", "fish" ]
C
earthworms create tunnels in soil
openbookqa
obqa_02_01698
A person lost in a maze will need to find their way out alone, but a person lost in a forest may
[ "rely on television", "rely on magnets", "rely on spirits", "rely on deer" ]
B
natural magnetism is used for pointing north by a compass
ARC-Easy
arc_04_00591
Why is protein an important part of a healthy diet?
[ "It is needed to change glucose to energy.", "It is needed to store nutrients.", "It is needed to repair tissue.", "It is needed to produce water." ]
C
null
sciq
sciq_01_01681
The appendicular skeleton is made up of all bones of the upper and lower what?
[ "limbs", "hemispheres", "digestive tract", "organs" ]
A
Figure 7.2 Axial and Appendicular Skeleton The axial skeleton supports the head, neck, back, and chest and thus forms the vertical axis of the body. It consists of the skull, vertebral column (including the sacrum and coccyx), and the thoracic cage, formed by the ribs and sternum. The appendicular skeleton is made up o...
medmcqa
medmcqa_05_00525
. A 45 year male with a history of alcohol dependence presents with confusion, nystagmus and ataxia. Examination reveals 6th cranial nerve weakness. He is most likely to be suffering from:
[ "Korsakoff's psychosis", "Wernicke encephalopathy.", "De Clerambault syndrome", "Delirium tremens" ]
B
B i.e. Wernicke encephalopathy
sciq
sciq_01_05362
What happens to growth of plants and bacteria in warmer regions?
[ "they grow slower", "they mutate", "they are stunted", "they grow faster" ]
D
In warmer regions, plants and bacteria grow faster. Plants and animals weather material and produce soils. In tropical regions, where temperature and precipitation are consistently high, thick soils form. Arid regions have thin soils.
sciq
sciq_01_05083
What 'counting' instrument is used to measure radioactivity?
[ "geiger counter", "Liquid Counter", "pryor counter", "ellie counter" ]
A
prepared. A student measures the radioactivity of this source with a Geiger counter and observes 1500 counts per minute. She notices that the source was prepared 120 days before her lab. What fraction of the decays is she observing with her apparatus? (b) Identify some of the reasons that only a fraction of the α s emi...
sciq
sciq_01_05284
Fluoride ion is widely used in water supplies to help prevent what?
[ "chlorine taste", "rust", "bacteria", "tooth decay" ]
D
Fluoride ion is widely used in water supplies to help prevent tooth decay. Chloride is an important component in ion balance in blood. Iodide ion is needed by the thyroid gland to make the hormone thyroxine.
sciq
sciq_01_05088
Vertebrates evolved from primitive forms of which creature?
[ "arthropods", "chordates", "cephalopods", "humanoids" ]
B
Vertebrates evolved from primitive chordates. This occurred about 550 million years ago. The earliest vertebrates may have been jawless fish, like the hagfish in Figure below . Vertebrates evolved a backbone to replace the notochord after the embryo stage. They also evolved a cranium , or bony skull, to enclose and pro...
sciq
sciq_01_04490
What kind of movement do planets in the solar system make around the sun?
[ "round orbits", "optical orbits", "spinning orbits", "elliptical orbits" ]
D
Flickr:Image Editor. Planets in the solar system make elliptical orbits around the Sun . CC BY 2.0.
medmcqa
medmcqa_05_00613
Bumper fracture:
[ "Fracture of fibula", "Fracture of distal tibia", "Fracture of medial tibial plateau", "Fracture of lateral tibial plateau" ]
D
Ans. (d) Fracture of lateral tibial plateauRef: BRS: gross anatomy 7th ed. / 83* Bumper fracture is a fracture of the lateral tibial plateau caused by a forced valgus applied to the knee usually by the impact bumper of a moving car on the lateral side of the knee while the foot is planted on the ground.* This causes th...
openbookqa
obqa_02_02815
a bird builds a nest in a tree before the forest was lumbered down. Which of these is a result?
[ "the bird gets a bigger home", "the bird gains more space", "the bird loses its home", "the bird is happy" ]
C
if a habitat is removed then that habitat is destroyed
math_qa
mathqa_03_01854
there were two candidates in an election . winner candidate received 62 % of votes and won the election by 324 votes . find the number of votes casted to the winning candidate ?
[ "456", "837", "912", "1200" ]
B
"w = 62 % l = 38 % 62 % - 38 % = 24 % 24 % - - - - - - - - 324 62 % - - - - - - - - ? = > 837 answer : b"
openbookqa
obqa_02_02448
A parent contributes DNA to their offspring which can result in
[ "beads", "freckles", "frowns", "dirt" ]
B
DNA is a vehicle for passing inherited characteristics from parent to offspring
ARC-Challenge
arc_04_03037
Which is not an example of animal instinct?
[ "migrating", "hibernating", "hunting skills", "building nests" ]
C
null
sciq
sciq_01_08308
How long does membrane depoloriazation typically last for?
[ "5 minutes", "1 hour", "3 seconds", "one minute" ]
D
math_qa
mathqa_03_02286
the ratio of money with ram and gopal is 7 : 17 and that with gopal and krishan is 7 : 17 . if ram has rs . 686 , krishan has ?
[ "s . 2890", "s . 4046", "s . 1190", "s . 1620" ]
B
"ram : gopal = 7 : 17 = 49 : 119 gopal : krishan = 7 : 17 = 119 : 289 ram : gopal : krishan = 49 : 119 : 289 ram : krishan = 49 : 289 thus , 49 : 289 = 686 : n & there n = 289 x 686 / 49 = rs . 4046 answer : b"
ARC-Easy
arc_04_01580
The functions of a plant's roots are to support the plant and
[ "make food", "produce fruit", "take in water and nutrients", "aid in germination" ]
C
null
sciq
sciq_01_09479
Cutting forests and clearing land has also increased the amount of what in the atmosphere?
[ "oxygen", "carbon dioxide", "smog", "pesticides" ]
B
Because of human activities, there is more carbon dioxide in the atmosphere today than in the past hundreds of thousands of years. Burning fossil fuels and has released great quantities of carbon dioxide into the atmosphere. Cutting forests and clearing land has also increased carbon dioxide into the atmosphere because...
sciq
sciq_01_02390
What hormone does the endocrine system secrete to help cells absorb blood sugar?
[ "testosterone", "glucose", "insulin", "Cortisol" ]
C
After you eat and digest a sugary snack, the level of sugar in your blood quickly rises. In response, the endocrine system secretes the hormone insulin. Insulin helps cells absorb sugar from the blood. This causes the level of sugar in the blood to fall back to its normal level.
math_qa
mathqa_03_03251
the greatest number that divides 2928 and 3240 leaving remainders 5 and 1 respectively is :
[ "74", "78", "79", "81" ]
C
"explanation : 2928 - 5 = 2923 , 3240 - 1 = 3239 highest number that can divide 2923 and 3239 is hcf of numbers . hcf of 2923 and 3239 = 79 answer : c"
sciq
sciq_01_02108
Chemical symbols are useful to concisely represent the elements present in a substance. the letters usually come from the name of what?
[ "scientist", "month", "discoverer", "element" ]
D
Chemical symbols are useful to concisely represent the elements present in a substance. The letters usually come from the name of the element.
sciq
sciq_01_02246
A simple sugar such as fructose or glucose is also called a what?
[ "galactose", "carbohydrate", "monosaccharide", "disaccharide" ]
C
A monosaccharide is a simple sugar such as fructose or glucose. Fructose is found in fruits, whereas glucose generally results from the digestion of other carbohydrates. Glucose (C 6 H 12 O 6 ) is used for energy by the cells of most organisms, and is a product of photosynthesis.
openbookqa
obqa_02_02066
A pot of water is ready to cook noodles when it is boiling, as noted by
[ "salty taste", "water smell", "bubble production", "cool water" ]
C
boiling is when liquids are heated above their boiling point
math_qa
mathqa_03_01307
working at constant rate , pump x pumped out half of the water in a flooded basement in 2 hours . the pump y was started and the two pumps , working independently at their respective constant rates , pumped out rest of the water in 3 hours . how many hours would it have taken pump y , operating alone at its own constan...
[ "a . 10", "b . 12", "c . 14", "d . 18" ]
D
rate of x = 1 / 8 rate of x + y = 1 / 6 rate of y = 1 / 6 - 1 / 8 = 1 / 24 18 hours d
sciq
sciq_01_07723
Long-term storage of what element occurs when matter from living organisms is buried deep underground and becomes fossilized?
[ "Nitrogen", "oxygen", "carbon", "hydrogen" ]
C
Figure 20.11 Carbon dioxide gas exists in the atmosphere and is dissolved in water. Photosynthesis converts carbon dioxide gas to organic carbon, and respiration cycles the organic carbon back into carbon dioxide gas. Long-term storage of organic carbon occurs when matter from living organisms is buried deep undergroun...
openbookqa
obqa_02_00276
A beak is used for catching prey by some birds, like how they are used by
[ "chickadees", "glass flamingos", "chicks", "plastic parrots" ]
A
a beak is used for catching prey by some birds
sciq
sciq_01_06477
Plants and fungi cells have what basic cell structure, which animals do not have?
[ "Cytoskeleton", "Lysosomes", "cell wall", "Cell Membrane" ]
C
Plants and fungi cells both have a cell wall, which animals do not have.
openbookqa
obqa_02_00310
Frogs bury themselves in mud in order to
[ "retain energy", "bear young", "find food", "take a nap" ]
A
An example of hibernation is a frog burying itself in mud
sciq
sciq_01_00382
Pressure, volume, and temperature are related by which law?
[ "gas law", "Law of Conservation", "Murphy's Law", "law of inertia" ]
A
Pressure, volume, and temperature are related by the combined gas law.
sciq
sciq_01_02024
What type of rocks are laid down horizontally with the oldest at the bottom?
[ "igneous", "sedimentary", "crystalline", "metamorphic" ]
B
Sedimentary rocks are laid down horizontally with the oldest at the bottom.
sciq
sciq_01_02095
Humans have about 20,000 to 22,000 genes scattered among 23 of these?
[ "atoms", "ribosomes", "neutrons", "chromosomes" ]
D
The nucleus is a membrane-enclosed organelle found in most eukaryotic cells. The nucleus is the largest organelle in the cell and contains most of the cell's genetic information (mitochondria also contain DNA, called mitochondrial DNA, but it makes up just a small percentage of the cell’s overall DNA content). The gene...
medmcqa
medmcqa_05_01483
The given cell is activated by
[ "IL-1", "IL-2", "IL-5", "IL-6" ]
C
TH2 cells secrete IL-4, IL-5, and IL-13, which recruit and activate eosinophils and are responsible for the alternative pathway of macrophage activationReference: Robbins and Cotran Pathologic Basis of Disease; 9th edition; Chapter 3; Inflammation and Repair
sciq
sciq_01_00430
The global pattern of precipitation is influenced by movements of what?
[ "pollution masses", "air valleys", "clouds", "air masses" ]
D
The global pattern of precipitation is influenced by movements of air masses. For example, there is a global belt of dry air masses and low precipitation at about 30° N and 30° S latitude.
math_qa
mathqa_03_02835
a cyclist rides a bicycle 7 km at an average speed of 10 km / hr and again travels 10 km at an average speed of 7 km / hr . what is the average speed for the entire trip ?
[ "7.59", "7.79", "7.99", "8.19" ]
C
distance = 17 km time = 7 / 10 + 10 / 7 = ( 49 + 100 ) / 70 = 149 / 70 hours average speed = ( 17 * 70 ) / 149 = 7.99 km / h the answer is c .
math_qa
mathqa_03_04901
on a sum of money , the s . i . for 2 years is $ 600 , while the c . i . is $ 609 , the rate of interest being the same in both the cases . the rate of interest is ?
[ "2 %", "3 %", "4 %", "5 %" ]
B
"difference in c . i . and s . i for 2 years = $ 609 - $ 600 = $ 9 s . i for one year = $ 300 s . i . on $ 300 for 1 year = $ 9 rate = ( 100 * 9 ) / ( 300 ) = 3 % the answer is b ."
sciq
sciq_01_07878
During the winter, production of what amine involved in the sleep-wake cycle may be affected by less sunlight hours?
[ "serotonin", "melatonin", "folate", "dopamine" ]
B
What does sunshine have to do with sleep (other than the sun shining in your eyes and waking you up)? For many people, sleeping problems have to do with an amine that the brain makes called melatonin. This compound affects the sleep-wake cycle and is affected by sunlight. During the winter, the daily cycle of melatonin...
sciq
sciq_01_08136
Timber, obtained from trees that can be replanted to replace those that are cut down, is an example of what type of resource?
[ "mineral", "nonrenewable", "fossil fuel", "renewable" ]
D
Renewable resources can be renewed as they are used. An example is timber, which comes from trees. New trees can be planted to replace those that are cut down. Sunlight is a renewable resource. It seems we will never run out of that!.
sciq
sciq_01_01646
Evolution occurs by what process whereby better-adapted members pass along their traits, according to darwin?
[ "spontaneous variation", "organic selection", "natural change", "natural selection" ]
D
Evolution is a change in the characteristics of living things over time. As described by Darwin, evolution occurs by a process called natural selection . In natural selection, some members of a species, being better adapted or suited to their environment, produce more offspring than others, so they pass "advantageous t...
medmcqa
medmcqa_05_01150
Not a strategy for measles elimination ?
[ "Mop up: Vaccinate kids left with routine vaccination", "Catch up: One time nation wide vaccination 9 month- 14 years old children", "Keep up: Vaccinate > 95% successive bih", "Follow up: Nationwide vaccination every 2-4 years" ]
A
Ans. is 'a' i.e., Mop up: Vaccinate kids left with routine vaccination The prioies of countries persuing measles control include :- Improve routine vaccination coverage level to at least 90%. Active coverage of more than 90% in catch-up and follow-up campaigns or active coverage of more than 90% with routine second dos...
sciq
sciq_01_10497
Bivalvia and gastropoda are classes of what phylum?
[ "Insects", "diatoms", "fishes", "mollusks" ]
D
Which of the following statements about the anatomy of a mollusk is false? a. Mollusks have a radula for scraping food. Mollusks have ventral nerve cords. The tissue beneath the shell is called the mantle. The mantle cavity contains hemolymph. Mollusk Diversity This phylum is comprised of seven classes: Aplacophora, Mo...
openbookqa
obqa_02_01811
Which would have the most gravity?
[ "a metric ton of marbles", "a blue whale and its calf", "Jupiter and all its moons", "a ball of burning gas in our solar system" ]
D
non-contact forces can affect objects that are not touching
medmcqa
medmcqa_05_00403
The most common site of cerebral infarction is in the territory of:
[ "Anterior cerebral aery", "Middle cerebral aery", "Posterior cerebral aery", "Posterior inferior cerebellar aery" ]
B
MCA is the largest cerebral aery and is the vessel most commonly affected by the CVA. It supplies most of the outer convex brain surface, nearly all the basal ganglia and the posterior and anterior internal capsules.
openbookqa
obqa_02_03911
It's most likely to rain when the color of the sky looks
[ "Seven", "eggshells", "meteor strike", "dark and Silvery" ]
D
grey clouds appear before precipitation
sciq
sciq_01_06548
Humans need lipids for many vital functions such as storing energy and forming what?
[ "ionic bonds", "enzymes", "zygotes", "cell membranes" ]
D
Humans need lipids for many vital functions such as storing energy and forming cell membranes. Lipids can also supply cells with energy. In fact, a gram of lipids supplies more than twice as much energy as a gram of carbohydrates or proteins. Lipids are necessary in the diet for most of these functions. Although the hu...
ARC-Easy
arc_04_00093
A class is testing the effect of exercise on heart rate. The heart rate of two students before exercise is compared to their heart rate after running around a track. Which procedure will most likely help the class correctly compare the results of the two students?
[ "test students who are the same height", "have the students run on the same day", "measure the distance each student runs", "have the students run for the same amount of time" ]
D
null
openbookqa
obqa_02_03116
A battery operated vehicle requires everything but
[ "electricity", "ions", "petroleum", "charging" ]
C
an electric car uses less gasoline than a regular car
medmcqa
medmcqa_05_03922
Which of the following drugs does not cross the blood placental barrier:
[ "Atropine", "Glycopyrrolate", "Physostigmine", "Hyoscine hydrobromide." ]
B
Glycopyrrolate is a quaternary ammonium compound and is thus water-soluble and to penetrate BBB.
ARC-Easy
arc_04_02046
Most of Earth's surface is covered by
[ "sand", "trees", "water", "mountains" ]
C
null
sciq
sciq_01_07577
What protects the scalp from ultraviolet light exposure and loss of body heat?
[ "temporal hair", "ground hair", "receding hair", "head hair" ]
D
Head hair protects the scalp from ultraviolet light exposure and loss of body heat. Hair in eyelashes, eyebrows, and nostrils traps water, dust, and other irritants. Nails protect the ends of fingers and toes and enhance the sense of touch.
math_qa
mathqa_03_03515
if x + y = 9 and x – y = 3 , then x ^ 2 - y ^ 2 =
[ "- 4", "4", "10", "27" ]
D
the fastest approach has already been shown . here ' s one more option . given : x + y = 9 x – y = 3 add the two equations to get : 2 x = 12 , which means x = 6 if x = 6 , we can plug that value into either equation , to conclude that y = 3 if x = 6 and y = 3 , then x ² - y ² = 6 ² - 3 ² = 27 answer : d
math_qa
mathqa_03_04797
there are 6 red balls and 4 blue balls in a jar . if 3 balls are selected from the jar , what is the probability that all 3 balls selected are red balls ?
[ "1 / 3", "1 / 6", "5 / 12", "5 / 24" ]
B
"the number of ways of choosing 3 balls from the jar is 10 c 3 = 120 . the number of ways of choosing 3 red balls is 6 c 3 = 20 . p ( 3 red balls ) = 20 / 120 = 1 / 6 . the answer is b ."
math_qa
mathqa_03_03719
a car travels uphill at 30 km / hr and downhill at 90 km / hr . it goes 100 km uphill and 50 km downhill . find the average speed of the car ?
[ "32 kmph", "39 kmph", "34 kmph", "35 kmph" ]
B
"avg speed = total distance / total time . total distance traveled = 100 + 50 = 150 km ; time taken for uphill journey = 100 / 30 = 10 / 3 ; time taken for down hill journey = 50 / 90 = 5 / 9 ; avg speed = 150 / ( 10 / 3 + 5 / 9 ) = 39 kmph answer : b"
sciq
sciq_01_02720
What is the term for heterotrophs that eat only or mainly animals?
[ "omnivores", "parasites", "carnivores", "predators" ]
C
All reptiles are heterotrophs, and the majority eats other animals. Heterotrophs that eat only or mainly animals are called carnivores. Large carnivorous reptiles such as crocodilians are the top predators in their ecosystems. They prey on large birds, fish, deer, turtles, and sometimes farm livestock. Their powerful j...
sciq
sciq_01_09614
What process is magnesium important to?
[ "carbon cycle", "absorption", "dna replication", "photosynthetic" ]
D
Magnesium (Mg) and calcium (Ca) are also important macronutrients. The role of calcium is twofold: to regulate nutrient transport, and to support many enzyme functions. Magnesium is important to the photosynthetic process. These minerals, along with the micronutrients, which are described below, also contribute to the ...
sciq
sciq_01_02713
Which organ has a thick mucus lining that protects the underlying tissue from the action of the digestive juices?
[ "spleen", "liver", "colon", "stomach" ]
D
functionality of pepsin. Second, the stomach has a thick mucus lining that protects the underlying tissue from the action of the digestive juices. When this mucus lining is ruptured, ulcers can form in the stomach. Ulcers are open wounds in or on an organ caused by bacteria (Helicobacter pylori) when the mucus lining i...
sciq
sciq_01_04556
A biofilm is a colony of prokaryotes that is stuck to what?
[ "skin", "the middle", "surface", "the bottom" ]
C
Some prokaryotes form structures consisting of many individual cells, like the cells in Figure below . This is called a biofilm. A biofilm is a colony of prokaryotes that is stuck to a surface. The surface might be a rock or a host's tissues. The sticky plaque that collects on your teeth between brushings is a biofilm....
ARC-Easy
arc_04_01383
Quartz and feldspar are two common minerals. When they are found mixed together in nature they form
[ "rocks.", "magma.", "soil deposits.", "organic material." ]
A
null
medmcqa
medmcqa_05_01668
An 8 year old child has shown of lack of interest in studies for last 6 months. He has frequent quarrels with his parents and has frequent headaches as anexcuse to avoid school. What would be the most appropriate clinical diagnosis in this patient?
[ "Rule out migraine", "Rule out depression", "Rule out an oppositional defiant disorder", "Leave him as normal adolescent problem" ]
C
Since the person in the question is showing a hostile behavior which is impairing his academic activities for the last 6 months, the most appropriate next step would be to rule out Oppositional defiant disorder.Oppositional defiant disorder is a recurrent pattern of negativistic, hostile or defiant behavior that lasts ...
math_qa
mathqa_03_00465
a factory producing tennis balls stores them in either big boxes , 25 balls per box , or small boxes , with 17 balls per box . if 94 freshly manufactured balls are to be stored , what is the least number of balls that can be left unboxed ?
[ "0", "1", "2", "3" ]
B
"there is no way to store 94 balls without leftovers : 94 − 0 ∗ 25 = 94 - 94 − 2 ∗ 25 = 44 , 94 − 3 ∗ 25 = 19 are not divisible by 17 . 93 balls can be stored successfully : 93 − 1 ∗ 25 = 68 is divisible by 17 . thus , 93 = 1 ∗ 25 + 4 ∗ 17 and we need 1 big box and 4 small boxes . answer : b"
math_qa
mathqa_03_03199
the average of 5 quantities is 10 . the average of 3 of them is 4 . what is the average of remaining 2 numbers ?
[ "19", "14", "8", "9.5" ]
A
answer : a ( 5 x 10 - 3 x 4 ) / 2 = 19
sciq
sciq_01_05683
What is the common name of mixtures of hydrocarbons that formed over millions of years from the remains of dead organisms?
[ "non-renewable fuel", "fossil record", "fossil fuels", "renewable resources" ]
C
Fossil fuels are mixtures of hydrocarbons that formed over millions of years from the remains of dead organisms. They include petroleum (commonly called oil), natural gas, and coal. Fossil fuels provide most of the energy used in the world today. They are burned in power plants to produce electrical energy, and they al...
openbookqa
obqa_02_00133
The biggest things on the moon are
[ "space stations", "alien life forms", "craters", "moon rocks" ]
C
the lunar surface contains many craters
openbookqa
obqa_02_04166
The animals that never migrate never do so because they were born
[ "with the instinct", "are too lazy", "seventeen", "without the instinct" ]
D
migration is an instinctive behavior
math_qa
mathqa_03_04209
in an office in singapore there are 60 % female employees . 50 % of all the male employees are computer literate . if there are total 62 % employees computer literate out of total 1100 employees , then the no . of female employees who are computer literate ?
[ "462", "674", "672", "960" ]
A
"solution : total employees , = 1100 female employees , 60 % of 1100 . = ( 60 * 1100 ) / 100 = 660 . then male employees , = 440 50 % of male are computer literate , = 220 male computer literate . 62 % of total employees are computer literate , = ( 62 * 1100 ) / 100 = 682 computer literate . thus , female computer lite...
sciq
sciq_01_03598
The primary substance that human cells, and ultimately human beings, are made up of is what?
[ "air", "water", "oil", "gas" ]
B
The Water (Hydrologic) Cycle Water is the basis of all living processes. The human body is more than 1/2 water and human cells are more than 70 percent water. Thus, most land animals need a supply of fresh water to survive. However, when examining the stores of water on Earth, 97.5 percent of it is non-potable salt wat...
sciq
sciq_01_11534
Images in what type of mirror are reversed left and right but not reversed top and bottom?
[ "concave", "convex", "virtual", "plane mirror" ]
D
Images in a plane mirror are reversed left and right but not reversed top and bottom.
sciq
sciq_01_05416
The deepest region of the adrenal cortex is the zona reticularis, which produces small amounts of a class of steroid sex hormones called what?
[ "androgens", "estrogen", "testosterone", "dioxins" ]
A
Hormones of the Zona Reticularis The deepest region of the adrenal cortex is the zona reticularis, which produces small amounts of a class of steroid sex hormones called androgens. During puberty and most of adulthood, androgens are produced in the gonads. The androgens produced in the zona reticularis supplement the g...
openbookqa
obqa_02_03182
A person who plants in their garden may switch between planting beets and cucumbers in order to
[ "clean up dirt", "make dirt healthier", "remove dirt molecules", "make dirt green" ]
B
crop rotation has a positive impact on soil quality
math_qa
mathqa_03_02630
a student scored an average of 85 marks in 3 subjects : physics , chemistry and mathematics . if the average marks in physics and mathematics is 90 and that in physics and chemistry is 70 , what are the marks in physics ?
[ "86", "16", "76", "65" ]
D
given m + p + c = 85 * 3 = 255 - - - ( 1 ) m + p = 90 * 2 = 180 - - - ( 2 ) p + c = 70 * 2 = 140 - - - ( 3 ) where m , p and c are marks obtained by the student in mathematics , physics and chemistry . p = ( 2 ) + ( 3 ) - ( 1 ) = 180 + 140 - 255 = 65 answer : d
sciq
sciq_01_02498
In certain populations, some of the chromosomes have become what?
[ "dissolved", "composed", "fused", "elongated" ]
C
openbookqa
obqa_02_04182
Which would you have the most difficult time spotting in the woods?
[ "an adult Brontosaurus", "a polar bear", "a large airplane", "satanic leaf-tailed gecko" ]
D
An example of camouflage is an organism looking like leaves
sciq
sciq_01_04868
What is the name for the organs behind the head of a fish that absorb oxygen from water?
[ "gills", "pores", "lungs", "alveoli" ]
A
Fish have gills. Gills are organs behind the head that absorb oxygen from water. Water enters through the mouth, passes over the gills, and then exits the body.
medmcqa
medmcqa_05_04689
After 30% loss of blood volume in road traffic accident. What next m/n is to be given ?
[ "IV fluid only", "IV fluid with cardiac stimulant", "Dopamine", "Vasopressor drug" ]
A
Ans is 'a' ie. IV Fluids only 30% loss of blood volume is a moderate grade of hypovolemia and can be managed adequately by IV fluids only. Cardiac stimulants, dopamine or vasopressor agents are required only in severe hypovolemia (> 40% loss). Grades of Hypovolemic shock Mild Moderate Severe ( ( 20-40% loss) ( >40% los...
sciq
sciq_01_02624
What are mass, volume, and length an example of?
[ "dynamic properties", "fantastic properties", "extensive compounds", "extensive properties" ]
D
Extensive properties vary according to the amount of matter present. Examples of extensive properties include mass, volume, and length.
sciq
sciq_01_07946
What organ system transports blood through the body and to and from the lungs?
[ "nervous", "digestive", "metabolism", "circulatory" ]
D
in animals but also in plants. An organ system is a higher level of organization that consists of functionally related organs. Mammals have many organ systems. For instance, the circulatory system transports blood through the body and to and from the lungs; it includes organs such as the heart and blood vessels. Organi...
sciq
sciq_01_03529
What kind of equal and opposite forces cancel one another out when they act on the same object?
[ "solid", "exact", "combined", "balanced" ]
D
You might think that actions and reactions would cancel each other out like balanced forces do. Balanced forces, which are also equal and opposite, cancel each other out because they act on the same object. Action and reaction forces, in contrast, act on different objects, so they don’t cancel each other out and, in fa...
openbookqa
obqa_02_04595
Which likely increased atmospheric CO2 recently?
[ "sustainable fisheries", "electric cars", "motorcycles", "ant populations" ]
C
carbon dioxide concentrations in the air have increased over the last decade dramatically
math_qa
mathqa_03_00355
a circular ground whose diameter is 40 metres , has a garden of area 1100 m ^ 2 around it . what is the wide of the path of the garden ?
[ "8.07", "7.07", "6.07", "7.0" ]
B
"req . area = ï € [ ( 20 ) 2 â € “ ( r ) 2 ] = 22 ⠁ „ 7 ã — ( 400 - r ^ 2 ) [ since a 2 - b 2 = ( a + b ) ( a - b ) ] ie ) 22 / 7 ( 400 - r ^ 2 ) = 1100 , ie ) r ^ 2 = 50 , r = 7.07 m answer b"
sciq
sciq_01_00088
Most of the pathogens that cause stis enter the body through mucous membranes of which organs?
[ "reproductive organs", "eyes", "kidneys", "stomach" ]
A
Most of the pathogens that cause STIs enter the body through mucous membranes of the reproductive organs. All sexual behaviors that involve contact between mucous membranes put a person at risk for infection. This includes vaginal, anal, and oral sexual behaviors. Many STIs can also be transmitted through body fluids s...
medmcqa
medmcqa_05_03866
Which of the following drugs is used in management of breast cancer if it is estrogen receptor positive -
[ "Bevacizumab", "Tamoxifen", "Cyclophosphamide", "Adalimumab" ]
B
Ans. is 'b' i.e., Tamoxifen Drugs commonly used in hormone (estrogen) receptor positive breast cancero SERMs Tamoxifen, tromifeneo SERDsFulvestranto Aromatase inhibitors Letrozole, anastrazole, exemestone.
sciq
sciq_01_08475
What's the name for an atom that has gained or lost an electron?
[ "an ion", "neutrino", "isotope", "an photon" ]
A
Atoms cannot only gain extra electrons. They can also lose electrons. In either case, they become ions . Ions are atoms that have a positive or negative charge because they have unequal numbers of protons and electrons. If atoms lose electrons, they become positive ions, or cations. If atoms gain electrons, they become...
sciq
sciq_01_03248
The high points of a transverse wave are called what?
[ "points", "crests", "valleys", "ridges" ]
B
The high points of a transverse wave are called crests, and the low points are called troughs.