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sciq
sciq_01_11442
Pinocytosis or "cellular drinking," occurs when the plasma membrane folds inward to form a channel allowing dissolved substances to enter what?
[ "cell", "nucleus", "proteins", "homeostasis" ]
A
Pinocytosis or "cellular drinking," occurs when the plasma membrane folds inward to form a channel allowing dissolved substances to enter the cell, as shown in Figure below . When the channel is closed, the liquid is encircled within a pinocytic vesicle.
math_qa
mathqa_03_03128
while working alone at their constant rates , computer x can process 240 files in 12 hours , and computer y can process 240 files in 4 hours . if all files processed by these computers are the same size , how many hours would it take the two computers , working at the same time at their respective constant rates , to p...
[ "2", "2.4", "2.7", "3" ]
D
"both computers together process files at a rate of 240 / 12 + 240 / 4 = 20 + 60 = 80 files per hour . the time required to process 240 files is 240 / 80 = 3 hours the answer is d ."
ARC-Easy
arc_04_00430
What causes a free falling object to accelerate?
[ "inertia", "gravity", "initial speed", "initial direction" ]
B
null
sciq
sciq_01_05779
What does increasing a solute's temperature do?
[ "increases its viscosity", "decrease its solubility", "increases its solubility", "no change" ]
C
If a solute is a solid or liquid, increasing the temperature increases its solubility. For example, more sugar can dissolve in hot water than in cold water.
math_qa
mathqa_03_00373
what is the square root of 239,121 ?
[ "476", "489", "497", "511" ]
B
"according to divisibility rules , 239,121 is divisible by 9 . 2 + 3 + 9 + 1 + 2 + 1 = 18 this means , that the answer choice must be divisible by 3 a ) 4 + 7 + 6 = 17 no b ) 4 + 8 + 9 = 21 yes c ) 4 + 9 + 7 = 20 no d ) 5 + 1 + 1 = 7 no e ) 5 + 2 + 4 = 11 no b is the only answer"
openbookqa
obqa_02_00441
If something is alive, then it requires
[ "something to keep it interested", "a source to propel it forward", "something to give it hope", "something to consider doing" ]
B
living things all require energy for survival
math_qa
mathqa_03_00317
when greenville state university decided to move its fine arts collection to a new library , it had to package the collection in 20 - inch by 20 - inch by 15 - inch boxes . if the university pays $ 1.20 for every box , and if the university needs 3.06 million cubic inches to package the collection , what is the minimum...
[ "$ 255", "$ 275", "$ 510", "$ 612" ]
D
total no . of boxes = 3060000 / ( 20 × 20 × 15 ) = 510 total cost = 510 × $ 1.20 = $ 612 answer d
math_qa
mathqa_03_01042
paul has to secure 50 % marks to clear his exam of class 7 th . he got 50 marks and failed by 10 marks . what is the maximum marks ?
[ "100", "110", "120", "210" ]
C
c 120 to pass the exam ravish needs 50 + 10 = 60 marks . = > ( 60 / 50 ) * 100 = 120
math_qa
mathqa_03_04676
how many multiples of 2 are there between 1 and 60 , exclusive ?
[ "21", "22", "29", "26" ]
C
"29 multiples of 2 between 1 and 60 exclusive . from 2 * 1 upto 2 * 29 , ( 1,2 , 3,4 , . . . , 29 ) . hence , 29 multiples ! correct option is c"
sciq
sciq_01_02882
What is the term for a very rapid motor response that is not directed by the brain?
[ "reflex", "instinct", "adaptation", "sensor" ]
A
The somatic nervous system also controls some unconscious movements called reflexes. A reflex is a very rapid motor response that is not directed by the brain. In a reflex, nerve impulses travel to and from the spinal cord in a reflex arc, like the one in Figure below . In this example, the person jerks his hand away f...
sciq
sciq_01_08806
What is the approximate population on the earth?
[ "9 trillion", "7.3 billion", "7 billion", "41 billion" ]
C
There are approximately 7 billion humans on the planet. How long would it take some bacteria to make 7 billion copies of themselves?.
math_qa
mathqa_03_02719
a dealer offers a cash discount of 20 % and still makes a profit of 20 % when he further allows 10 articles to be sold at the cost price of 9 articles to a particular sticky bargainer . how much percent above the cost price were his articles listed ?
[ "50 %", "55 %", "60 %", "66 + ( 2 / 3" ]
D
"given cash discount - 20 % profit - 20 % items sold - 10 price sold at = list price of 9 assume list price = $ 10 total invoice = $ 90 - 20 % cash discount = $ 72 let cost price of 10 items be x so total cost = 10 * x given the shopkeeper had a profit of 20 % 10 * x * 120 / 100 = 72 or x = $ 6 which means his products...
sciq
sciq_01_08715
What can alkenes and alkynes be reduced with to form alkanes?
[ "hydrogen gas", "oxygen", "acids", "enzymes" ]
A
Alkenes and alkynes can be reduced with hydrogen gas to form alkanes.
math_qa
mathqa_03_01992
a man sitting in a train which is travelling at 50 kmph observes that a goods train , travelling in opposite direction , takes 9 seconds to pass him . if the goods train is 280 m long , find its speed .
[ "62 kmph", "58 kmph", "52 kmph", "50 kmph" ]
A
"relative speed = ( 280 ⁄ 9 ) m / sec = ( 280 ⁄ 9 × 18 ⁄ 5 ) kmph = 112 kmph . ∴ speed of goods train = ( 112 – 50 ) kmph = 62 kmph . answer a"
math_qa
mathqa_03_04038
if the radius of a circle is decreased 10 % , what happens to the area ?
[ "10 % decrease", "19 % decrease", "36 % decrease", "40 % decrease" ]
B
"area of square = pi * radius ^ 2 new radius = 0.9 * old radius so new area = ( 0.9 ) ^ 2 old area = > 0.81 of old area = > 81 % old area ans : b"
medmcqa
medmcqa_05_01022
The percentage of HbF at birth is:
[ "20%", "50%", "70%", "90%" ]
C
Ans. is c, i.e. 70%Ref NelsonDuring Intrauterine life HbF=90%At birth HbF=70%At 6 months after birth HbF=1-2%In Adults (HbF) is in traces.
math_qa
mathqa_03_01380
in a certain store , the profit is 320 % of the cost . if the cost increases by 40 % but the selling price remains constant , approximately what percentage of the selling price is the profit
[ "67 %", "80 %", "90 %", "100 %" ]
A
explanation : let c . p . = rs . 100 . then , profit = rs . 320 , s . p . = rs . 420 . new c . p . = 140 % of rs . 100 = rs . 140 new s . p . = rs . 420 . profit = rs . ( 420 - 140 ) = rs . 280 required percentage = ( 280 / 420 ) * 100 = 66.67 % ( approx ) = 67 % answer : a
medmcqa
medmcqa_05_01511
Infective form for mosquito in Plasmodium falciparum is aEUR'
[ "Merozoites", "Sporozoites", "Gametocytes", "Trophozoites" ]
C
Gametocytes "Infective stage of plasmodium for mosquito ----)Gametocytes". The gametocytes do not cause any clinical illness in the human host but are essential for transmission of the infection. The gametocytes do not develop .fuher or divide in the veebrate host & unless taken up by the vector mosquito they die in a ...
sciq
sciq_01_08992
The base in an antacid reacts to do what to excess stomach acid?
[ "neutralize it", "repel it", "oxidize it", "expel it" ]
A
Perhaps you have eaten too much pizza and felt very uncomfortable hours later. This feeling is due to excess stomach acid being produced. The discomfort can be dealt with by taking an antacid. The base in the antacid will react with the HCl in the stomach and neutralize it, taking care of that unpleasant feeling.
openbookqa
obqa_02_00539
Tsunamis
[ "have little impact on the environment", "can be easily halted", "can rearrange coastal shorelines", "can encourage economic growth" ]
C
natural events usually cause changes to Earth 's surface
sciq
sciq_01_10098
What are misfolded versions of normal brain proteins?
[ "protons", "humans", "prions", "ribosomes" ]
C
ARC-Easy
arc_04_01774
Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment?
[ "circulatory", "excretory", "immune", "respiratory" ]
D
null
sciq
sciq_01_02589
The cubic crystal system is composed of how many different types of unit cells?
[ "five", "four", "three", "one" ]
C
Unit cells occur in many different varieties. As one example, the cubic crystal system is composed of three different types of unit cells: (1) simple cubic , (2) face-centered cubic , and (3) body-centered cubic . These are shown in three different ways in the Figure below .
sciq
sciq_01_07083
Stis are diseases caused by what that spread through sexual contact?
[ "ecosystems", "amoeba", "parasites", "pathogens" ]
D
STIs are diseases caused by pathogens that spread through sexual contact. Abstinence from sexual activity and other risk behaviors is the only completely effective way to prevent the spread of STIs.
sciq
sciq_01_00396
What property is characterized by eddies and swirls that mix layers of fluid together, unlike laminar flow?
[ "turbulence", "combustion", "compression", "evaporation" ]
A
12.4 Viscosity and Laminar Flow; Poiseuille’s Law • Laminar flow is characterized by smooth flow of the fluid in layers that do not mix. • Turbulence is characterized by eddies and swirls that mix layers of fluid together. • Fluid viscosity η is due to friction within a fluid. Representative values are given in Table 1...
sciq
sciq_01_07343
What type of energy is possessed by autumn leaves before they fall?
[ "potential energy", "mechanical energy", "radioactive energy", "kinetic energy" ]
A
Before leaves fall from trees in autumn, they have potential energy. Why do they have the potential to fall?.
ARC-Easy
arc_04_00700
Why is it important to repeat an experiment several times?
[ "to use up all the materials", "to give all the students the chance to participate", "to collect more data to fit the hypothesis", "to determine if the results are similar" ]
D
null
sciq
sciq_01_03838
What is the latin name for mercury?
[ "hydrargyrum", "stibium", "trichina", "spirogyra" ]
A
In this image, you see small pools of elemental mercury. The Latin name for mercury is hydrargyrum, a compound word meaning “water-silver” (hydr- = water, -argyros = silver), since it is liquid like water but shiny like silver. Mercury is the only pure metal that exists as a liquid at room temperature.
openbookqa
obqa_02_04088
If a thing is going to be relocated with a shove, then
[ "someone is forced to eat crackers", "some exertion is necessary", "someone needs to lose weight", "a gym needs to be opened" ]
B
pushing an object requires force
ARC-Easy
arc_04_01576
Which of the following tools is most useful for tightening a small mechanical fastener?
[ "chisel", "pliers", "sander", "saw" ]
B
null
math_qa
mathqa_03_00999
what is 2 / 5 of 5 / 9 of 1 / 2 ?
[ "1 / 4", "1 / 9", "9 / 16", "5 / 8" ]
B
"2 / 5 * 5 / 9 * 1 / 2 = 1 / 9 answer : b"
openbookqa
obqa_02_04000
What is a source of energy for animals?
[ "food charts", "fire", "grasshoppers", "gales" ]
C
food is a source of energy for animals
openbookqa
obqa_02_02280
A load of earth and stone that folds upon itself repeatedly could be considered
[ "a still", "a group", "a range", "a pond" ]
C
mountains are formed by plate tectonics
openbookqa
obqa_02_04429
A decrease in trees may be attributed to
[ "dendrophilia", "hiking enthusiasts", "increased chainsaw sales", "nature photographers" ]
C
cutting down trees in a forest causes the number of trees to decrease in that forest
sciq
sciq_01_03070
What is determined by the energy of the disturbance that causes the wave?
[ "wave amplitude", "frequency", "wavelength", "Ohm" ]
A
Wave amplitude is determined by the energy of the disturbance that causes the wave. A wave caused by a disturbance with more energy has greater amplitude.
ARC-Easy
arc_04_01783
The rocks that form most of the Sierra Nevada are granitic rocks. This means that the mountains were most likely formed by
[ "strike-slip faults.", "transform boundaries.", "volcanic activity.", "land subsidence." ]
C
null
math_qa
mathqa_03_01007
sheela deposits rs . 3800 in bank savings account . if this is 32 % of her monthly income . what is her monthly income in ?
[ "22000", "20000", "11875", "12340" ]
C
"explanation : 32 % of income = rs . 3800 100 % of income = 3800 x 100 / 32 = rs . 11875 answer : c"
sciq
sciq_01_07974
What process is the opposite of fusion and releases energy only when heavy nuclei are split?
[ "diffusion", "activation", "fission", "osmosis" ]
C
Fission is the opposite of fusion and releases energy only when heavy nuclei are split. As noted in Fusion, energy is released if the products of a nuclear reaction have a greater binding energy per nucleon ( BE / A ) than the parent nuclei. Figure 32.25.
ARC-Challenge
arc_04_02194
Which conclusion is best supported by a tree-growth ring that is much narrower than the other growth rings?
[ "Crops grew well that year.", "One year was unusually dry.", "The tree was planted long ago.", "The area used to have more trees." ]
B
null
ARC-Easy
arc_04_01059
Which process in the water cycle would be accelerated by an increase in temperature?
[ "runoff", "evaporation", "precipitation", "condensation" ]
B
null
math_qa
mathqa_03_02017
a store owner estimates that the average price of type a products will increase by 35 % next year and that the price of type b products will increase by 20 % next year . this year , the total amount aid for type a products was $ 3500 and the total price paid for type b products was $ 6300 . according to the store owner...
[ "$ 14,755", "$ 15,325", "$ 16,000", "$ 12,285" ]
D
"cost of type a products next year = 1.35 * 3500 = 4725 cost of type b products next year = 1.2 * 6300 = 7560 total 4725 + 7560 = 12285 answer : d"
sciq
sciq_01_05581
What are composed of an oxygen atom that forms single bonds with two carbon atoms?
[ "ethers", "solvents", "acids", "sugars" ]
A
Ethers are composed of an oxygen atom that forms single bonds with two carbon atoms. Ethers are relatively unreactive making them good solvents for other organic compounds, such as in the formation of anesthetics.
sciq
sciq_01_11396
The release of calcium ions initiates what?
[ "cramps", "muscle contractions", "spasms", "exhalation" ]
B
The release of calcium ions initiates muscle contractions. Watch this video (http://openstaxcollege. org/l/calciumrole) to learn more about the role of calcium. (a) What are “T-tubules” and what is their role? (b) Please describe how actinbinding sites are made available for cross-bridging with myosin heads during cont...
medmcqa
medmcqa_05_00118
Inferior oblique is supplied by the ..... carnial nerve :
[ "3rd", "4th", "5th", "6th" ]
A
A i.e., 3rd
sciq
sciq_01_02644
Myopia and hyperopia are defects that can be corrected with devices?
[ "fins", "lenses", "crutches", "casts" ]
B
Myopia and hyperopia can be corrected with lenses.
sciq
sciq_01_08690
What's it called when gases turn back into liquids?
[ "evaporation", "diffusion", "condensation", "dehydration" ]
C
As water cools in the clouds, condensation occurs. Condensation is when gases turn back into liquids.
sciq
sciq_01_08449
What are cyclins made up of?
[ "group of sugars", "steroids", "group of proteins", "enzymes" ]
C
The cell cycle is controlled by a number of protein-controlled feedback processes. Two types of proteins involved in the control of the cell cycle are kinases and cyclins . Cyclins activate kinases by binding to them, specifically they activate cyclin-dependent kinases (CDK) . Cyclins comprise a group of proteins that ...
medmcqa
medmcqa_05_03052
Post pasteurized milk's quality is tested by -
[ "Phosphatase test", "Methylene blue test", "Catalase test", "Oxidase test" ]
A
Phosphatase test check tge efficiency of pasteurization. It detects inadequate pasteurization or the addition of raw milkREF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-606.
medmcqa
medmcqa_05_04102
Cause of infeility in Kaagener's Syndrome...?
[ "Oligospermia", "Asthenospermia", "Undescended testis", "Epididymis obstruction" ]
B
Kaagener Syndrome/ Primary ciliary dyskinesia / Immotile ciliary syndrome Rare AR disorder in which there is a congenital absence of dynein arms (a protein structure associated with motility) in all body cilia It can lead to male factor infeility due to diminished sperm motility in males (Asthenospermia) Female can con...
sciq
sciq_01_01685
What occurs when plants release water vapor through stomata (leaf pores)?
[ "evaporation", "inhalation", "crystallization", "transpiration" ]
D
Transpiration occurs when plants release water vapor through leaf pores called stomata (see Figure below ). The water is a product of photosynthesis.
openbookqa
obqa_02_01316
H2O allows for the conduction of
[ "electrical potential", "land", "neurons", "people" ]
A
water is an electrical conductor
ARC-Challenge
arc_04_02883
Which comparison of ecosystems is true?
[ "Tundras are warmer than grasslands.", "Grasslands get more rain than deserts.", "Deserts have more plants than rainforests.", "Rainforests are rockier than tundras." ]
B
null
medmcqa
medmcqa_05_01912
A 32-yrs-old woman is diagnosed with major depression. What is the chance that her identical twin sister will develop the same disease? (NOT RELATED TO PHARMACOLOGY)
[ "5%", "25%", "50%", "75%" ]
C
The concordance rate for mood disorders (Mania) in monozygotic twins averages 70% and for depression it is 50% when various studies are combined. The concordance rate in dizygotic twins is approximately 20%.
openbookqa
obqa_02_03238
the closest star to the human planet delivers solar energy to the planet
[ "maybe", "the moon", "this is uncertain", "this is affirmative" ]
D
the sun transfers solar energy from itself to the Earth through sunlight
openbookqa
obqa_02_03144
Which is the most likely scenario
[ "squirrels save nuts when summer is hotter than the current season", "squirrels never save food", "squirrels eat when it rains outside only", "squirrels save nuts when humans make them" ]
A
when available resources decrease in an environment , organisms have to conserve those resources
sciq
sciq_01_07436
The simplest system is that of contractile vacuoles present in what?
[ "parasites", "crystals", "microorganisms", "macroorganisms" ]
C
41.3 Excretion Systems Many systems have evolved for excreting wastes that are simpler than the kidney and urinary systems of vertebrate animals. The simplest system is that of contractile vacuoles present in microorganisms. Flame cells and nephridia in worms perform excretory functions and maintain osmotic balance. So...
sciq
sciq_01_01128
The outer surface of the heart changes from positive to negative during what?
[ "depolarization", "permeability", "reproduction", "inflammation" ]
A
Figure 20.33 The outer surface of the heart changes from positive to negative during depolarization. This wave of depolarization is spreading from the top of the heart and is represented by a vector pointing in the direction of the wave. This vector is a voltage (potential difference) vector. Three electrodes, labeled ...
sciq
sciq_01_01712
Pluto's orbit is so elliptical that sometimes it is inside the orbit of which planet?
[ "Mars", "Earth", "neptune", "titan" ]
C
For decades Pluto was a planet. But even then, scientists knew it was an unusual planet. The other outer planets are all gas giants. Pluto is small, icy and rocky. With a diameter of about 2400 kilometers, it has only about 1/5 the mass of Earth’s Moon. The other planets orbit in a plane. Pluto's orbit is tilted. The s...
ARC-Challenge
arc_04_02525
Street maps are examples of two dimensional models. Which information cannot be determined using a basic map?
[ "distance from place to place", "directions such as north and south", "names of highways and roads", "elevations such as distance above sea level" ]
D
null
sciq
sciq_01_00461
The simplest and smallest particle of matter that still has chemical properties of the element is called?
[ "an isotope", "an atom", "a nucleus", "a molecule" ]
B
Inside of elements, you will find identical atoms. An atom is the simplest and smallest particle of matter that still has chemical properties of the element. Atoms are the building block of all of the elements that make up the matter in your body or any other living or non-living thing. Atoms are so small that only the...
medmcqa
medmcqa_05_03794
Kartagener's syndrome increase risk of -
[ "Brochitis", "Bronchiolitis", "Brochieactasis", "Tracheitis" ]
C
Ans. is 'c' i.e., Bronchieactasis
sciq
sciq_01_00805
What creates charged regions in a water molecule?
[ "ionic bonds", "nonpolar bonds", "polar covalent bonds", "noncovalent bonds" ]
C
ARC-Challenge
arc_04_02942
Four students compared the total mass of the products to the total mass of the reactants after performing three trials of the same chemical reaction. Each student concluded that the total mass of the products was slightly less than the total mass of the reactants. Each student proposed a different explanation as follow...
[ "Students 1 and 3", "Students 1 and 4", "Students 2 and 3", "Students 2 and 4" ]
C
null
math_qa
mathqa_03_02211
a , b , and c are integers and a < b < c . s is the set of all integers from a to b , inclusive . q is the set of all integers from b to c , inclusive . the median of set s is ( 3 / 4 ) * b . the median of set q is ( 7.5 / 8 ) * c . if r is the set of all integers from a to c , inclusive , what fraction of c is the med...
[ "3 / 8", "1 / 2", "11 / 16", "23 / 32" ]
D
"the answer isc : 11 / 16 . the key to this problem is remembering that the median for a consecutive set of numbers is equivalent to its mean . for example , the mean and median of a set consisting of x , x + 1 , x + 2 , . . . , y will always be ( x + y ) / 2 . for set s , consisting of numbers ( a , a + 1 , . . . , b ...
medmcqa
medmcqa_05_01741
Number connection test is done to detect:
[ "Parkinsonism", "Dementia", "Cerebellar ataxia", "Hepatic encephalopathy" ]
D
Ans: D (Hepatic encephalopathy.) Ref: Davidson 21st edn and Harrison's Principles of Internal Medicine, 18th ednExplanation:HEPATIC ENCEPHALOPATHYIt is a neuropsychiatric syndrome caused by chronic liver disease.Due to disturbance of brain function by circulating neurotoxins metabolised by liver.Neurotoxins include:o A...
medmcqa
medmcqa_05_00573
A child with erythematous non-blanching bosselated lesion on right side of the face, Rx is –
[ "Erbium laser", "Nd–YAG laser", "Flash light pumped dye laser", "Q ruby laser" ]
C
"Non blanching bosselated lesion on right side of the face suggests port wine stain" Treatment of choice for port-wine stain is a yellow-pulsed dye laser often along with cryogen spray cooling.
medmcqa
medmcqa_05_01422
The most frequent tooth to be impacted is :
[ "Lower third molar", "Lower canine", "Upper third molar", "Upper premolar" ]
A
Impacted tooth : Is the tooth that has failed to erupt completely or partially to its correct position in the dental arch and its eruption potential has been lost. Order of frequency : Mandibular 3rd molar (i.e. Lower 3rd molar). Maxillary 3rd molar (Upper 3rd molar). Maxillary canine.
math_qa
mathqa_03_04531
what is the decimal equivalent of ( 1 / 4 ) ^ 5 ?
[ "0.0016", "0.0625", "0.0001", "0.25" ]
C
"( 1 / 4 ) ^ 5 = 1 / 1024 = 0.0001 answer : c"
sciq
sciq_01_07824
The location of an object in a frame of reference is called what?
[ "fact", "position", "change", "marker" ]
B
The location of an object in a frame of reference is called position.
sciq
sciq_01_04652
Tapeworms are what type of flatworms?
[ "single-celled", "symbiotic", "endogenous", "parasitic" ]
D
Flatworms can be free-living or parasitic. Tapeworms are parasitic flatworms.
sciq
sciq_01_10572
What is the main difference between prokaryotic and eukaryotic cells?
[ "presence of a nucleus", "presence of cytoplasm", "enlarged mitochondria", "absence of cytoplasm" ]
A
The answer depends on if the cell is prokaryotic or eukaryotic. The main difference between the two types of cells is the presence of a nucleus. In eukaryotic cells, DNA lives in the nucleus.
openbookqa
obqa_02_00794
Sending electricity through what causes electric current to flow through it?
[ "ground", "water", "air", "copper" ]
D
sending electricity through a conductor causes electric current to flow through that conductor
ARC-Easy
arc_04_00343
Since green plants make their own food, they are called
[ "predators", "prey", "decomposers", "producers" ]
D
null
ARC-Easy
arc_04_00921
Which energy conversion process occurs whenever coal is burned?
[ "mechanical to electrical", "mechanical to thermal", "chemical to electrical", "chemical to thermal" ]
D
null
openbookqa
obqa_02_01981
Certain countries make it illegal to bring in certain species of animals that breed very fast because that will lead to
[ "extinction", "milk", "underpopulation", "overpopulation" ]
D
if the population of an organism increases then the ecosystem may become overpopulated with that organism
ARC-Easy
arc_04_01230
The North America Nebula is named for its similarity in shape to the North American continent. It was discovered within the Milky Way by astronomer William Herschel in 1790. What was Mr. Herschel most likely observing?
[ "the explosion following the collapse of a star", "a dense cluster of stars of varying magnitudes", "meteorites as Earth passed through the tail of a comet", "a cloud of hydrogen gas and dust where stars are born" ]
D
null
sciq
sciq_01_07195
During photosynthesis what organelle is used by plants to change sunlight into chemical energy?
[ "ribosome", "golgi apparatus", "chloroplasts", "mitochondria" ]
C
When ancient plants underwent photosynthesis, they changed energy in sunlight to stored chemical energy in food. The plants used the food and so did the organisms that ate the plants. After the plants and other organisms died, their remains gradually changed to fossil fuels as they were covered and compressed by layers...
medmcqa
medmcqa_05_03196
The milk of which of the following contains the least amount of calcium?
[ "Human", "Cow", "Buffalo", "Goat" ]
A
Human milk do not contain calcium. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 582
openbookqa
obqa_02_03393
Solar pumps move liquids continuously from the
[ "space", "glaciers", "sky", "ground" ]
D
renewable resources can be used over again
ARC-Challenge
arc_04_03207
In order for students to perform lab experiments safely and accurately, they should
[ "copy what the other students are doing.", "ask the teacher to first demonstrate the entire experiment.", "perform the experiment after memorizing the instructions.", "read and understand all directions before starting the experiment." ]
D
null
sciq
sciq_01_00097
What type of reactions form compounds?
[ "consumption reactions", "chemical reactions", "physical reactions", "mineral reactions" ]
B
A compound is a unique substance that forms when two or more elements combine chemically. Compounds form as a result of chemical reactions. The elements in compounds are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions that share or transfer valence electrons. For a video ...
medmcqa
medmcqa_05_03398
Teau D' organge appearance of the mammary skin is due to :
[ "Intra-epithelial cancer", "Sub-epidermal cancer", "Lymphatic permeation", "Vascular embolisation" ]
C
Ans. is 'c' i.e. lymphatic permeation Phenomena resulting from lymphatic obstruction in advanced breast cancer 1) Peau d' orange Peau d' orange is due to cutaneous lymphatic edema, where the infiltrated skin is tethered by the sweat ducts, it cannot swell, leading to an appearance like orange skin. occasionally it may ...
medmcqa
medmcqa_05_04643
The minimum platelet count required to maintain vascular integrity in the microcirculation is:
[ "1000-5000", "5000-10000", "10,000-20,000", "20,000-30,000" ]
B
A platelet count of 5000-10,000 is required to maintain vascular integrity in microcirculation. Ref: Harrisons Principles of Internal Medicine, 18th edition, Page : 966
sciq
sciq_01_01691
What kind of diseases involve the immune system accidentally attacking healthy body cells?
[ "autoimmune", "metabolic", "contagious diseases", "inflammation" ]
A
Autoimmune diseases occur when the immune system fails to recognize the body’s own molecules as “self,” or belonging to the person. Instead, it attacks body cells as though they were dangerous pathogens. Some relatively common autoimmune diseases are listed in Table below . These diseases cannot be cured, although they...
openbookqa
obqa_02_02664
Why is it fall one month and spring another month?
[ "the moon has different phases", "the earth is revolving", "solar flares appear in cycles", "the earth is in a different place in its orbit" ]
D
Earth orbiting the Sun causes seasons to change
medmcqa
medmcqa_05_03584
Commotio retinae affect which pa of the retina?
[ "Posterior pole", "Peripheral retina", "Inferior-nasal pa", "Superior-nasal pa" ]
A
(Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 431) Berlin's edema, also called commotion retinae, occurs in blunt trauma to the eyeIt manifests as milky white cloudiness involving a considerable area of the posterior pole with a 'cherry-red' spot in the foveal regionIt may disappear after some day...
openbookqa
obqa_02_04679
A thing which has great physical capacity is most likely
[ "hardly healthy", "in poor health", "in fantastic health", "rarely healthy" ]
C
being stronger usually has a positive impact on an living thing 's health
medmcqa
medmcqa_05_04155
Cesarean section is absolutely indicated in :
[ "Previous H/0 LSCS", "Type IV placenta pre", "Type II placenta pre", "Past H/o hysterotomy" ]
B
Type IV placenta pre
openbookqa
obqa_02_02895
Who would refrain from eating a salad?
[ "horses", "cows", "wolves", "rabbits" ]
C
carnivores only eat animals
sciq
sciq_01_10278
Historically, certain bacteriophages have also been used as cloning vectors for making what?
[ "specific libraries", "genomic libraries", "diverse libraries", "ultraviolet libraries" ]
B
sciq
sciq_01_05566
Each new horizontal row of the periodic table corresponds to the beginning of a new period because a new principal energy level is being filled with what?
[ "electrons", "protons", "photons", "neutrons" ]
A
When ordered by atomic number, the discrepancies within Mendeleev’s table disappeared. Tellurium has an atomic number of 52, while iodine has an atomic number of 53. So even though tellurium does indeed have a greater atomic mass than iodine, it is properly placed before iodine in the periodic table. Mendeleev and Mose...
medmcqa
medmcqa_05_00749
Which is not a feature of Apoptosis:
[ "Cellular shrinkage.", "Nuclear compaction.", "The plasma membrane is disturbed", "The plasma membrane is intact." ]
C
Apoptosis vs Necrosis:
math_qa
mathqa_03_03743
the value of a machine depreciates at 24 % per annum . if its present value is $ 1 , 50,000 , at what price should it be sold after two years such that a profit of $ 24,000 is made ?
[ "$ 250640", "$ 430640", "$ 120640", "$ 110640" ]
D
"the value of the machine after two years = 0.76 * 0.76 * 1 , 50,000 = $ 86,640 sp such that a profit of $ 24,000 is made = 86,640 + 24,000 = $ 1 , 10,640 d"
openbookqa
obqa_02_01600
A microscope is useful for looking at
[ "giraffes", "trees", "butterflies", "sea life" ]
D
microscope is used to see small things by making them appear bigger
openbookqa
obqa_02_02069
A lily wants to spread its genetic material around and so relies upon
[ "beads", "assistance", "shopping", "patients" ]
B
seed production requires pollination
sciq
sciq_01_10040
What property of fluids causes something to stay on or near the surface of water?
[ "strength", "buoyancy", "density", "weight" ]
B
The fishing float in Figure below bobs on the surface of the water. The fish in the figure is suspended in the water near the surface. Why do the float and fish stay on or near the surface? Why don’t they sink? The answer is buoyancy, another property of fluids.
sciq
sciq_01_06348
What do glands in the skin produce to cool down the body?
[ "sweat", "lactic acid", "saliva", "mucus" ]
A
glands in the skin that produce sweat, a salty fluid that helps cool down the body.
medmcqa
medmcqa_05_01414
Nerve supply of obturator internus is by
[ "L1-L3", "L4-S1", "L5-S2", "S1-S3" ]
C
OBTURATOR INTERNUS Fan-shaped Belly lies in pelvis and tendon in gluteal region.Action: lateral rotators of thigh at hip joint.supplied by nerve to obturator internus.Root value: L5,S1,S2Branches: obturator internus and superior gamellus.{Reference: BDC 6E page no.173}
medmcqa
medmcqa_05_01780
A 20 year old male presents with chronic constipation, head ache and habitus, neuromas of tongue, medullated corneal nerve fibers and nodule of 2*2 cm size in left lobe of thyroid. This patient is a case of:
[ "Sporadic medullary carcinoma of thyroid", "Familial medullary carcinoma of thyroid", "MEN-2A", "MEN-2B" ]
D
MEN-2A (Sipple Syndrome MEN) MEN-2B (MEN-3) Components Medullary carcinoma thyroid Pheochromocytoma Parathyroid hyperplasia or adenoma Hirschprung&;s Disease Cutaneous lichen amyloidosis Medullary carcinoma thyroid Pheochromocytoma Intestinal ganglioneuromas Mucosal neuromas Megacolon Marfanoid features Defect RET onco...
sciq
sciq_01_03166
Researchers have also used insect courtship to explore genetic variation underlying differences in what?
[ "reproduction", "behavior", "function", "instance" ]
B