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medmcqa
medmcqa_05_01720
During 3rd day to 2nd week of starvation, brain depends on which of the following substance as fuel:
[ "Ketone bodies", "Glucose", "Fatty acid", "Amino Acid" ]
A
For brain, Glucose is the main/preferred fuel during Fed as well Fasting state whereas during Starvation, Brain depends upon Ketone Bodies as the fuel. So, answer is A - Ketone bodies. ADDITIONAL EDGE: Fed state: When we eat food (Within 2 hours of food intake is called Fed state) Fasting state: In between meals, when ...
sciq
sciq_01_03998
What term is defined as the area where a species lives and to which it has become adapted?
[ "habitat", "farmland", "nature", "range" ]
A
The single biggest cause of the sixth mass extinction is habitat loss. A habitat is the area where a species lives and to which it has become adapted. When a habitat is disturbed or destroyed, it threatens all the species that live there with extinction.
sciq
sciq_01_01614
Along with dna, what is the other main type of nucleic acid?
[ "cytoplasm", "nucleotides", "rna", "protein" ]
C
Nucleic acids are biochemical molecules that contain oxygen, nitrogen, and phosphorus in addition to carbon and hydrogen. There are two main types of nucleic acids. They are DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
openbookqa
obqa_02_01809
Herbivores like to dine on
[ "gravel", "other herbivores", "crustaceans", "chlorophyll" ]
D
cows only eat plants
sciq
sciq_01_11663
When the hemoglobin loses its oxygen, it changes to what color?
[ "purple red", "light pink", "bluish red", "grayish red" ]
C
The structure of heme (Figure 19.29), the iron-containing complex in hemoglobin, is very similar to that in chlorophyll. In hemoglobin, the red heme complex is bonded to a large protein molecule (globin) by the attachment of the protein to the heme ligand. Oxygen molecules are transported by hemoglobin in the blood by ...
sciq
sciq_01_08030
Animals that live in groups with other members of their species are called what?
[ "present animals", "energetic animals", "common animals", "social animals" ]
D
Why is animal communication important? Without it, animals would not be able to live together in groups. Animals that live in groups with other members of their species are called social animals . Social animals include many species of insects, birds, and mammals. Specific examples of social animals are ants, bees, cro...
openbookqa
obqa_02_04925
Over your head is dark though it is only afternoon on a summer's day. Lacking an eclipse of the sun, a viable reason for this darkness is
[ "the sky lacks clouds", "the sun is shining", "its about to storm", "clouds are completely absent" ]
C
cloudy means the presence of clouds in the sky
medmcqa
medmcqa_05_02428
Investigation of choice in Thiamine deficiency is
[ "RBC-Thiamine levels", "RBC - Transketolase levels", "RBC - Glutathione reductase levels", "WBC - Ascorbic acid levels" ]
B
Severe thiamine deficiency is associated with: Decreased RBC transketolase activity this is the earliest manifestation seen even before clinical disturbances Thiamin is a cofactor of Transketolase pyruvate, alpha-ketoglutarate and lactate level in blood increases in thiamine deficiency ref: DM Vasudevan 8th ed page 467
sciq
sciq_01_09083
Glucose, fructose, and galactose are hexose sugars, which contain six atoms of what element?
[ "hydrogen", "nitrogen", "oxygen", "carbon" ]
D
Monosaccharides A monosaccharide is a monomer of carbohydrates. Five monosaccharides are important in the body. Three of these are the hexose sugars, so called because they each contain six atoms of carbon. These are glucose, fructose, and galactose, shown in Figure 2.18a. The remaining monosaccharides are the two pent...
openbookqa
obqa_02_04837
What requires soil to grow?
[ "lakes", "car engine", "daffodils", "cows" ]
C
a plant requires soil for to grow
openbookqa
obqa_02_01733
Birds could use their beaks to
[ "swim", "run", "tidy up", "shop" ]
C
birds with beaks of different shapes eat different foods
sciq
sciq_01_02765
What connects the two hemispheres of the brain?
[ "The brain stem", "holy callosum", "corpus callosum", "disruption callosum" ]
C
The Brain The brain is the part of the central nervous system that is contained in the cranial cavity of the skull. It includes the cerebral cortex, limbic system, basal ganglia, thalamus, hypothalamus, cerebellum, brainstem, and retinas. The outermost part of the brain is a thick piece of nervous system tissue called ...
sciq
sciq_01_05479
What occurs when a parent cell splits into two identical daughter cells of the same size?
[ "twin fission", "symbiotic fission", "linear fission", "binary fission" ]
D
Binary fission occurs when a parent cell splits into two identical daughter cells of the same size.
sciq
sciq_01_02868
The bottom of the ocean is called what?
[ "Demersal zone", "Intertidal zone", "Final zone", "the benthic zone" ]
D
The bottom of the ocean is called the benthic zone. It includes the sediments on the bottom of the ocean and the water just above it. Organisms living in this zone include clams and crabs. They may be few in number due to relatively scarce nutrients in this zone.
sciq
sciq_01_07936
What generally sets the direction that technology takes?
[ "local weather", "problems of society", "random chance", "local animals" ]
B
The goal of technology is to solve people’s problems. Therefore, the problems of society generally set the direction that technology takes. Technology, in turn, affects society. It may make people’s lives easier or healthier. Two examples are described in Figure below .
math_qa
mathqa_03_01022
in a certain large company , the ratio of college graduates with a graduate degree to non - college graduates is 1 : 8 , and ratio of college graduates without a graduate degree to non - college graduates is 2 : 3 . if one picks a random college graduate at this large company , what is the probability t this college gr...
[ "1 / 11", "1 / 12", "1 / 13", "3 / 19" ]
D
"in believe the answer is d . please see below for explanation . 0 ) we are told the following ratios cgd - college graduate with degree ncg - non college graduate cgn - college graduate no degree cgd ncg cgn 1 8 3 2 in order to make cgd and cgn comparable we need to find the least common multiple of 8 and 3 and that i...
sciq
sciq_01_10533
What are centrioles made from?
[ "short microtubules", "carbon", "short filaments", "short particles" ]
A
Centrioles are made of short microtubules and are very important in cell division.
math_qa
mathqa_03_02070
a person travels equal distances with speeds of 3 km / hr , 6 km / hr , 9 km / hr . and takes a total time of 11 minutes . find the total distance ?
[ "1 km", "500 mts", "900 mts", "2 km" ]
C
"let the each distance be x km total distance = 3 x then total time , ( x / 3 ) + ( x / 6 ) + ( x / 9 ) = 11 / 60 x = 0.3 total distance = 3 * 0.3 = 0.9 km = 900 meters correct option is c"
sciq
sciq_01_01463
A hair grows out of a follicle and passes through what before extending above the skin surface?
[ "cartilage", "epidermis", "dermis", "callus" ]
B
Hair follicles are structures where hairs originate. Each hair grows out of a follicle, passes up through the epidermis, and extends above the skin surface.
math_qa
mathqa_03_03201
what is the number of integers from 1 to 1000 ( inclusive ) that are divisible by neither 11 nor by 34 ?
[ "884", "890", "892", "910" ]
B
"normally , i would use the method used by bunuel . it ' s the most accurate . but if you are looking for a speedy solution , you can use another method which will sometimes give you an estimate . looking at the options ( most of them are spread out ) , i wont mind trying it . ( mind you , the method is accurate here s...
openbookqa
obqa_02_00218
Transpiration involves
[ "H2O traveling about a daffodil's system", "pollen traveling about the plant's system", "the production of new oxygen molecules", "the production of new seedlings" ]
A
transpiration usually happens in the leaves of a plant
medmcqa
medmcqa_05_02690
Size of the bur for preparing lingual rest seat for a RPD is
[ "1/10 inch", "1/4 inch", "1/2 inch", "1 inch" ]
B
To prepare the lingual rest in enamel, a safe side 1/4 inch diamond disk should be used. Occlusal rest seats in sound enamel may be prepared with diamond points of approximately the size of No. 6 and round burs.
openbookqa
obqa_02_00308
What shows that the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side?
[ "summer in the USA, winter in Australia", "snow will be on the North Pole instead of the South Pole", "seasonal changes take place", "some countries are warmer than others" ]
A
the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side
math_qa
mathqa_03_04270
operation # is defined as : a # b = 4 a ^ 2 + 4 b ^ 2 + 8 ab for all non - negative integers . what is the value of ( a + b ) + 5 , when a # b = 100 ?
[ "5", "8", "10", "13" ]
C
"official solution : ( b ) we know that a # b = 100 and a # b = 4 a ² + 4 b ² + 8 ab . so 4 a ² + 4 b ² + 8 ab = 100 we can see that 4 a ² + 4 b ² + 8 ab is a well - known formula for ( 2 a + 2 b ) ² . therefore ( 2 a + 2 b ) ² = 100 . ( 2 a + 2 b ) is non - negative number , since both a and b are non - negative numbe...
sciq
sciq_01_01012
Regulatory proteins bind to regulatory elements to control what?
[ "differentiation", "transcription", "growth", "mutation" ]
B
Regulation of Transcription. Regulatory proteins bind to regulatory elements to control transcription. The regulatory elements are embedded within the DNA.
ARC-Challenge
arc_04_03140
In pea plants, tall is dominant over short. What size pea plants would result when two short plants are crossed?
[ "short plants only", "short and tall plants", "tall plants only", "middle-sized plants" ]
A
null
medmcqa
medmcqa_05_03460
Cidofovir is?
[ "Antiviral", "Antifungal", "Antihelmenthic", "Antibacterial" ]
A
Ans. is 'a' Antiviral Cidofovir It is an antiviral drug. It is a monophosphate nucleotide analog of cytidine which inhibits most DNA viruses including HSV, CMV, pox and adenoviruses. It is used for the treatment of CMV retinitis.
openbookqa
obqa_02_03570
What's necessary for the production of honey?
[ "maple syrup or corn syrup", "a honey producing factory", "a can of pesticide", "liquid from plant flowers" ]
D
bees convert nectar into honey
math_qa
mathqa_03_02390
a , b and c have rs . 1000 between them , a and c together have rs . 700 and b and c rs . 600 . how much does c have ?
[ "100", "200", "300", "400" ]
C
"a + b + c = 1000 a + c = 700 b + c = 600 - - - - - - - - - - - - - - a + b + 2 c = 1300 a + b + c = 1000 - - - - - - - - - - - - - - - - c = 300 answer : c"
openbookqa
obqa_02_02724
If a tree is being discussed and those talking want to know its age, they will
[ "think about it", "bury it", "look at leaves", "look inside it" ]
D
the number of rings in a tree trunk can be used to estimate the age of the tree
ARC-Easy
arc_04_01279
To pump blood through the body, the heart must overcome the force of gravity. Which body position would require the least work from the heart?
[ "sitting", "standing", "kneeling", "lying down" ]
D
null
math_qa
mathqa_03_02253
if x / y = 3 / z , then 4 x ^ 2 =
[ "y / z", "xy", "y ² / z ²", "36 y ² / z ²" ]
D
"this question is most easily solved by isolating y in the equation and substituting into the expression 4 x ² : x / y = 3 / z x = 3 y / z if we substitute 3 y / z into the expression for x , we get : 4 ( 3 y / z ) ² = 4 ( 9 y ² / z ² ) = 36 y ² / z ² . the correct answer is choice ( d ) ."
medmcqa
medmcqa_05_02862
A 35 years old female presented with acne. She was treated for her acne but after the treatment, she developed pigmentation. Which drug is responsible for hyperpigmentation?
[ "Tetracycline", "Erythromycin", "Minocycline", "Doxycycline" ]
C
Minocycline Oral antibiotics - most widely prescribed agents in acne Dose -100-200 mg daily Indicated for severe acne, moderate facial acne not responding to topical therapies and/or extensive truncal acne. Adverse effects with minocycline include drug hypersensitivity syndrome (DHS) - within 3 months of treatment init...
sciq
sciq_01_06446
What is a substance that increases the hydrogen ion concentration of a solution?
[ "sulfur", "base", "acid", "carbon" ]
C
ARC-Challenge
arc_04_02672
In a lab investigation, students use Brand X batteries in a flashlight and Brand Y batteries in a radio. After two hours, the flashlight stops working, but the radio continues to work. As a result, the students conclude that Brand Y batteries last longer. Which statement about the conclusion of the investigation is mos...
[ "The conclusion is valid because they tested two different brands.", "The conclusion is invalid because the test had multiple variables.", "The conclusion is valid because they conducted the investigation in a lab.", "The conclusion is invalid because the real names of the batteries were hidden." ]
B
null
math_qa
mathqa_03_03900
if jake loses 8 pounds , he will weigh twice as much as his sister . together they now weigh 290 pounds . what is jake ’ s present weight , in pounds ?
[ "131", "135", "169", "196" ]
D
"lets say j is the weight of jack and s is the wt of his sister . if he loses 8 pounds , he s twice as heavy as his sister . j - 8 = 2 * s also , together they weight 290 pounds j + s = 290 solvong the 2 equation , we get j = 196 pounds ! d"
openbookqa
obqa_02_04794
The main reason people want to use wind as an energy source is because there is
[ "make cookies", "Sing songs", "smile", "an everlasting supply" ]
D
wind is an inexhaustible resource
medmcqa
medmcqa_05_00884
In IVP, Adder head appearance is seen in:
[ "Polycystic kidney", "Horse shoe kidney", "Ureterocele", "Hydronephrosis" ]
C
Ureterocele is a cystic dilatation of the distal ureter. Cobra head or Adder head appearance is diagnostic of ureterocele. Spider leg appearance in polycystic kidney. Ref: Bailey & Love, 25th Edition, Page 1290
openbookqa
obqa_02_01634
What does a leaf need to do to absorb the most sunlight that it can?
[ "Hide in shade", "Remain small", "Grow very large", "Change colors" ]
C
as the size of a leaf increases , the amount of sunlight absorbed by that leaf will increase
sciq
sciq_01_05574
The addition of heat changes liquid water to what?
[ "distilled water", "rainwater", "water vapor", "ice" ]
C
sciq
sciq_01_11167
The fast motion of gas particles gives them a relatively large amount of what energy?
[ "Chemical energy", "Potential energy", "kinetic energy", "residual energy" ]
C
Gas particles are in constant rapid motion in random directions . The fast motion of gas particles gives them a relatively large amount of kinetic energy. Recall that kinetic energy is the energy that an object possesses because of its motion. The particles of a gas move in straight-line motion until they collide with ...
math_qa
mathqa_03_02980
a 160 meter long train crosses a man standing on the platform in 16 sec . what is the speed of the train ?
[ "36 kmph", "54 kmph", "92 kmph", "86 kmph" ]
A
"s = 160 / 16 * 18 / 5 = 36 kmph answer : a"
medmcqa
medmcqa_05_03451
Conversion of short term - memory into long term memory occurs in:
[ "Amygdala", "Hippocampus", "Frontal cortex", "Hypothalamus" ]
B
Ans. B. HippocampusConversion of short term - memory into long term memory occurs in Hippocampus by formation of stronger synapses between neurons.
sciq
sciq_01_02618
When are peptide bonds between amino acids formed?
[ "process of translation", "process of transcription", "process of production", "process of migration" ]
A
Amino acids can bond together through peptide bonds to form short chains called peptides or longer chains called polypeptides ( Figure below ). A peptide bond is a covalent bond formed from a condensation reaction between two molecules, causing the release of a molecule of water. This bond usually forms between two ami...
medmcqa
medmcqa_05_01678
Irresistible urge to do a thing repeatedly is seen in-
[ "Obsessive - compulsive disorder", "Schizophrenia", "Schizoaffective disorder", "Depression" ]
A
OCD is an anxiety disorder, which is characterized by recurrent, unwanted thoughts (obsessions) and repetitive behaviors (compulsion).
math_qa
mathqa_03_01498
for a group of n people , k of whom are of the same sex , the ( n - k ) / n expression yields an index for a certain phenomenon in group dynamics for members of that sex . for a group that consists of 20 people , 7 of whom are females , by how much does the index for the females exceed the index for the males in the gr...
[ "0.05", "0.0625", "0.2", "0.3" ]
D
"index for females = ( 20 - 7 ) / 20 = 13 / 20 = 0.65 index for males = ( 20 - 13 / 20 = 7 / 20 = 0.35 index for females exceeds males by 0.65 - 0.35 = 0.3 answer : d"
sciq
sciq_01_00320
In the chest, the trachea divides as it enters the lungs to form the right and left what?
[ "ventricle", "atrium", "bronchi", "alveoli" ]
C
In the chest, the trachea divides as it enters the lungs to form the right and left bronchi . The bronchi contain cartilage, which prevents them from collapsing. Mucus in the bronchi traps any remaining particles in air. Tiny, hair-like structures called cilia line the bronchi and sweep the particles and mucus toward t...
sciq
sciq_01_09711
What is required between cytoskeleton and motor proteins for cell motility?
[ "inhibition", "translation", "absorption", "interaction" ]
D
sciq
sciq_01_10803
Does an increase in temperature speed up or slow down reactions?
[ "end reaction", "speed up", "slow down", "remain the same" ]
B
math_qa
mathqa_03_01807
divide rs . 1301 between a and b , so that the amount of a after 7 years is equal to the amount of b after 9 years , the interest being compounded at 4 % per annum .
[ "625", "367", "288", "209" ]
A
explanation : let the two parts be rs . x and rs . ( 1301 - x ) . 625 x = 676 ( 1301 - x ) 1301 x = 676 x 1301 x = 676 . so , the parts are rs . 676 and rs . ( 1301 - 676 ) i . e rs . 676 and rs . 625 answer : a ) rs . 625
sciq
sciq_01_09009
Each atom has a required number of what?
[ "covalent bonds", "matrix bonds", "accretion bonds", "acceleration bonds" ]
A
sciq
sciq_01_07206
The smallest cyclic ether is called what?
[ "aldehyde", "peroxidase", "epoxide", "quark" ]
C
The smallest cyclic ether is called an epoxide. Draw its structure.
openbookqa
obqa_02_00349
if a great water traveler took inventory of their tools, which of these would be in it?
[ "a big cooking spoon", "a north facing item", "a big chopping board", "a big iron bender" ]
B
a compass is used to navigate oceans
math_qa
mathqa_03_02468
find the compound ratio of ( 4 : 3 ) , ( 1 : 3 ) and ( 2 : 3 ) is
[ "16 : 27", "12 : 13", "13 : 14", "14 : 15" ]
A
required ratio = 4 / 3 * 1 / 3 * 2 / 3 = 16 / 27 = 16 : 27 answer is a
medmcqa
medmcqa_05_04247
Posterior superior alveolar aery is branch of
[ "Nasal branch of maxillary aery", "Palatal branch of maxillary aery", "Mandibular aery", "Inferior alveolar aery" ]
B
B i.e. Palatal branch of maxillary aery
sciq
sciq_01_07158
Where are free-living roundworms mainly found?
[ "ocean depths", "freshwater habitats", "arboreal habitats", "rainforests" ]
B
Free-living roundworms are found mainly in freshwater habitats.
medmcqa
medmcqa_05_04055
Cherry red spot at macula is seen in :
[ "Macular infarction", "Neimen picks disease", "Commotio retinae", "CRVO" ]
D
D i.e. CRVO CRAO (not CRVO) presents with cherry red spot at macula Q
sciq
sciq_01_08627
What type of molecules are secreted by the cell in local signaling?
[ "word molecules", "negaitive molecules", "sleeping molecules", "messenger molecules" ]
D
math_qa
mathqa_03_01772
in township k each property is taxed at 10 percent of its assessed value . if the assessed value of a property in township k is increased from $ 20,000 to $ 28,000 , by how much will the property tax increase ?
[ "$ 800", "$ 1000", "$ 600", "$ 400" ]
A
increase in house value = $ 28,000 - $ 20,000 = $ 8000 so , tax increase = 10 % of $ 8000 = $ 800 answer : a
ARC-Easy
arc_04_00942
In which environment would a white rabbit be best protected from predators?
[ "a shady forest", "a snowy field", "a grassy lawn", "a muddy riverbank" ]
B
null
openbookqa
obqa_02_04700
Standing on a plastic tote will
[ "vaporize it", "deform it", "levitate it", "melt it" ]
B
if a flexible container is pushed on then that container will change shape
ARC-Challenge
arc_04_03214
Some power plants release heated water into rivers. This practice adds thermal energy to the river that most likely
[ "increases the amount of nutrients in the river.", "provides a better environment for native organisms to grow.", "keeps the river at balance with nature.", "threatens the existence of aquatic organisms." ]
D
null
ARC-Easy
arc_04_01392
Paleontologists often find and study the remains of ancient plants and animals. When the remains of ancient plants and animals are covered by layers of sediment over time, the remains
[ "melt", "dissolve", "become a fossil", "evaporate into vapor" ]
C
null
ARC-Easy
arc_04_01182
The primary function of insulin in our bodies is to
[ "store fuel for later use.", "regulate the amount of glucose in the blood.", "increase the efficiency of fuel consumption.", "prevent digestive bacteria from consuming glucose." ]
B
null
sciq
sciq_01_03287
The hexapoda subphylum includes mainly what type of animal?
[ "birds", "insects", "mammals", "spiders" ]
B
Living arthropods are divided into four subphyla. They are described in Table below . The Hexapoda subphylum includes mainly insects. There are so many insects and they are so important that they are described in greater detail below.
openbookqa
obqa_02_00828
School children often play a musical instrument by
[ "sweeping thumb across elastic band over a beverage carton", "making rubber band chain bracelets", "wearing rubber bands with braces", "shooting rubber band with one hand" ]
A
An example of playing a musical instrument is strumming a guitar string
sciq
sciq_01_04186
After the film is developed, any unexposed silver bromide must be removed by a process called what?
[ "sweeping", "washing", "fixing", "watering" ]
C
After the film is developed, any unexposed silver bromide must be removed by a process called “fixing”; otherwise, the entire film would turn black with additional exposure to light. Although silver bromide is insoluble in water, it is soluble in a dilute solution of sodium thiosulfate (Na2S2O3; photographer’s hypo) be...
ARC-Challenge
arc_04_02724
Estuaries are called "the nurseries of the sea" because many species lay eggs and develop their young in estuaries. Which two features of estuaries support this role most?
[ "concentrated nutrients and a steep salt gradient", "abundant shelter and concentrated nutrients", "a steep salt gradient and shallow water", "shallow water and abundant shelter" ]
B
null
sciq
sciq_01_00497
What is the study of the similarities and differences in the embryos of different species?
[ "prenatal biology", "example embryology", "comparative embryology", "diversified embryology" ]
C
Comparative embryology is the study of the similarities and differences in the embryos of different species. Similarities in embryos are evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails. Most vertebrates, except for fish, lose their gill slits by adulthood. Some of them also l...
sciq
sciq_01_03896
What are butterflies and bees an example of?
[ "parasites", "species", "pollinators", "spores" ]
C
ARC-Easy
arc_04_00916
How does a human body get energy?
[ "Sunlight on the skin produces energy.", "Water provides the majority of energy.", "Food and oxygen combine to deliver energy.", "Sleep provides energy stored at night for the next day." ]
C
null
sciq
sciq_01_11545
Studies have shown that not only does reproduction have a cost as far as how long male fruit flies live, but also fruit flies that have already mated several times have limited amounts of this?
[ "eggs", "chromosomes", "sperm", "dna" ]
C
Energy Budgets, Reproductive Costs, and Sexual Selection in Drosophila Research into how animals allocate their energy resources for growth, maintenance, and reproduction has used a variety of experimental animal models. Some of this work has been done using the common fruit fly, Drosophila melanogaster. Studies have s...
sciq
sciq_01_01243
The molecule pictured above is thyroxine, a compound produced by which gland?
[ "gallbladder", "stomach", "thyroid", "kidney" ]
C
The molecule pictured above is thyroxine, a compound produced by the thyroid gland. This molecule regulates how the body uses energy. In a condition known as hypothyroidism, the thyroid makes less thyroxine than normal. A person with this disease feels tired all the time and often puts on weight. Treatment with thyroid...
sciq
sciq_01_10780
A _______ of biology is a fundamental concept that is just as true for a bee or a sunflower as it is for us.
[ "notion", "hypothesis", "theory", "principle" ]
D
The word principle can be defined as "a fundamental truth or proposition that serves as the foundation for a system of belief or behavior or for a chain of reasoning. " A principle of biology is a fundamental concept that is just as true for a bee or a sunflower as it is for us. All life, including that sunflower and b...
sciq
sciq_01_04545
Respiratory therapists or respiratory practitioners evaluate and treat patients diseases affecting what part of the body?
[ "lung, heart, and blood vessels", "brain, stomach, heart", "heart, lungs, stomach", "byproduct , heart , and blood vessels" ]
A
Respiratory Therapist Respiratory therapists or respiratory practitioners evaluate and treat patients with lung and cardiovascular diseases. They work as part of a medical team to develop treatment plans for patients. Respiratory therapists may treat premature babies with underdeveloped lungs, patients with chronic con...
ARC-Easy
arc_04_00822
Which tool should a student use to compare the masses of two small rocks?
[ "balance", "hand lens", "ruler", "measuring cup" ]
A
null
sciq
sciq_01_03675
In which direction does water travel?
[ "backwards", "northwest", "downhill", "uphill" ]
C
After a heavy rain, you may find puddles of water standing in low spots. The same principle explains why water collects in ponds and lakes. Water travels downhill, so a depression in the ground fills with standing water. A pond is a small body of standing water. A lake is a large body of standing water. Most lakes have...
sciq
sciq_01_03946
What forms when a glacier scrapes a large hole in the ground?
[ "crater lake", "underground cavern", "glacial lake", "glacial hill" ]
C
The depression that allows water to collect to form a lake may come about in a variety of ways. The Great Lakes, for example, are glacial lakes. A glacial lake forms when a glacier scrapes a large hole in the ground. When the glacier melts, the water fills the hole and forms a lake. A kettle lake forms in the sediment ...
sciq
sciq_01_04564
How many pairs of chromosomes are there?
[ "25", "16", "24", "23" ]
D
During anaphase I the spindle fibers shorten, and the homologous chromosome pairs are separated from each other. This occurs as the chiasmata are severed, pulling homologous chromosomes apart. One chromosome from each pair moves toward one pole, with the other moving toward the other pole, resulting in a cell with 23 c...
ARC-Easy
arc_04_00587
A rock sample will most likely contain
[ "plants.", "minerals.", "water.", "wood." ]
B
null
openbookqa
obqa_02_03188
Hotter blood is rarely found
[ "in horny toads", "in rats", "in humans", "in bears" ]
A
a reptile is cold-blooded
medmcqa
medmcqa_05_01971
Afferent pupillary defect is seen in: March 2012
[ "Orbital cellulitis", "DM", "Papilloedema", "Retrobulbar neuritis" ]
D
Ans: D i.e. Retrobulbar neuritis When the input, through both the optic nerves to the midbrain is equal, the pupils to which the light is transferred will remain tightly constricted since the consensual response has the same magnitude as a direct response. Should there be a lesion of one optic nerve, the input from tha...
ARC-Easy
arc_04_00258
During protein synthesis, mRNA is translated into three-base sequences representing amino acids. What signals the ribosome to begin translating the mRNA into a new amino acid sequence?
[ "a codon", "enzymes", "a mutation", "temperature" ]
A
null
ARC-Challenge
arc_04_02656
A student investigates how speed changes as a ball travels down a ramp. Measurements taken by computer every second are recorded on a data table. Which diagram will best display the data from this table?
[ "a bar graph", "a line graph", "a pie chart", "a pictograph" ]
B
null
medmcqa
medmcqa_05_04366
Which of the following is the most common origin of cerebral metastasis?
[ "Lung cancer", "Breast cancer", "Melanoma", "Colon cancer" ]
A
Lung: 40% Breast : 10 - 30% Melanoma : 5 - 15% Unknown : 15%
sciq
sciq_01_06079
Ionic bonds are what kind of attraction between ions?
[ "electrostatic", "kinetic", "magnetic", "nuclear" ]
A
Ionic bonding. Ionic bonds result from electrostatic attractions between positively and negatively charged side chains of amino acids. For example, the mutual attraction between an aspartic acid carboxylate ion and a lysine ammonium ion helps to maintain a particular folded area of a protein (part (a) of http://catalog...
sciq
sciq_01_10474
The primary output of the basal nuclei is to the thalamus, which relays that output to where?
[ "Back cortex", "cerebral cortex", "effect cortex", "suffering cortex" ]
B
Thalamus The thalamus is a collection of nuclei that relay information between the cerebral cortex and the periphery, spinal cord, or brain stem. All sensory information, except for the sense of smell, passes through the thalamus before processing by the cortex. Axons from the peripheral sensory organs, or intermediate...
sciq
sciq_01_02893
Which branch of biology uses fossils to study life's history?
[ "paleontology", "morphology", "zoology", "geology" ]
A
Paleontology, another branch of biology, uses fossils to study life’s history (Figure 1.12). Zoology and botany are the study of animals and plants, respectively. Biologists can also specialize as biotechnologists, ecologists, or physiologists, to name just a few areas. Biotechnologists apply the knowledge of biology t...
math_qa
mathqa_03_01706
b completes a work in 3 days . a alone can do it in 10 days . if both work together , the work can be completed in how many days ?
[ "2.31 days", "4.31 days", "5.31 days", "6.31 days" ]
A
1 / 3 + 1 / 10 = 13 / 30 30 / 13 = 2.31 days answer : a
openbookqa
obqa_02_00397
High can be visually represented by
[ "basins", "mountains", "deep sea", "valleys" ]
B
high means great in altitude
sciq
sciq_01_07705
Cirrus, stratus, and cumulus are types of what?
[ "slopes", "clouds", "storms", "plants" ]
B
Cloud types include cirrus, stratus, and cumulus.
sciq
sciq_01_01129
What are the closest relatives to modern angiosperms?
[ "mitochondria", "gnetophytes", "staurikosaurus", "sporozoans" ]
B
Gnetophytes Gnetophytes are the closest relatives to modern angiosperms, and include three dissimilar genera of plants. Like angiosperms, they have broad leaves. Gnetum species are mostly vines in tropical and subtropical zones. The single species of Welwitschia is an unusual, low-growing plant found in the deserts of ...
medmcqa
medmcqa_05_02268
Methylphenidate is drug of choice for:
[ "Obsessive compulsive disorder", "ADHD (attention deficit hyperkinetic disorder)", "Enuresis", "Autism" ]
B
Ans. B. ADHDPharmacologic treatment is considered to be the first line of treatment for ADHD. Central nervous system stimulants are the first choice of agentsa. excellent safety records are documented for methylphenidateb. Dextroamphetamine and dextroamphetamine/amphetamine salt combinations are usually the second drug...
medmcqa
medmcqa_05_04286
Bartonella quintana causes -
[ "Trench fever", "Scrub typhus", "Endemic typhus", "Epidemic typhus" ]
A
Trench fever, also called 5-day fever or quintan fever, is caused by Bartonella Quintana (Rochalimaea Quintana).  The human body louse (Pediculus humanus corporis) is the vector and humans is the only known reservoir
math_qa
mathqa_03_04892
two trains 140 m and 160 m long run at the speed of 60 kmph and 48 kmph in opposite directions in parallel tracks . the time which they take to cross each other is ?
[ "5.6 sec", "8.9 sec", "10 sec", "12.6 sec" ]
C
"relative speed = 60 + 48 = 108 kmph * 5 / 18 = 30 m / s distance covered in crossing each other = 140 + 160 = 300 m required time = 300 * 1 / 30 = 10 sec answer is c"
medmcqa
medmcqa_05_04470
Contraction of uterine pain is carried by
[ "L 1,2,3", "T 12, L 1,2,3", "T 10,11,12 L 1", "L 3,4,5 S 1,2" ]
C
In the early stages of labour pains are mainly uterine in origin because of painful uterine contractions It is distributed along the cutaneous nerve distribution of T10 - L 1. In the later stages pain is due to cervical dilatation This pain is referred to back through sacral plexus. Ref: Dutta Obs 9e pg 112.
ARC-Easy
arc_04_01894
Which of these must occur for sediments to form new rock?
[ "precipitation", "evaporation", "partial melting", "recrystallization" ]
D
null
sciq
sciq_01_11138
What kind of process is boiling?
[ "spheroidal", "chemical", "cavitation", "isothermal" ]
D
As with melting, the energy in boiling goes exclusively to changing the phase of a substance; it does not go into changing the temperature of a substance. So boiling is also an isothermal process. Only when all of a substance has boiled does any additional energy go to changing its temperature. What happens when a liqu...
sciq
sciq_01_07764
The name of the cation comes first, followed by the name of the anion, in what kind of compound?
[ "localized compound", "magnetic compound", "covalent bonds", "ionic compound" ]
D
Names of ionic compounds are derived from the names of the ions, with the name of the cation coming first, followed by the name of the anion. If an element can form cations of different charges, there are two alternate systems for indicating the compound’s name. In the Stock system, a roman numeral in parentheses indic...
sciq
sciq_01_11606
What consists of a nitrogen atom bonded to some combination of carbons and hydrogens?
[ "a metalloid", "an amine", "an alkali", "a chloride" ]
B
An amine consists of a nitrogen atom bonded to some combination of carbons and hydrogens.