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math_qa
mathqa_03_00202
find the smallest number of 6 digits which is exactly divisible by 111 ?
[ "12000", "15550", "100011", "158993" ]
B
"smallest number of 6 digits is 100000 . on dividing 100000 by 111 , we get 100 as remainder . number to be added = ( 111 - 100 ) - 11 . hence , required number = 100011 answer b"
ARC-Easy
arc_04_01287
Brittany pedaled her bicycle quickly on a level surface. When she stopped pedaling and coasted, the bicycle slowed and came to a stop. What happened to the energy of the moving bicycle as it coasted to a stop?
[ "It was transferred to heat due to friction.", "It was reabsorbed into Brittany's muscles.", "It was stored in the bicycle wheels as potential energy.", "It was transferred to the air in the form of visible light." ]
A
null
ARC-Easy
arc_04_00304
What would be the best way to determine the role of squirrels in a forest ecosystem?
[ "measure the length and mass of several squirrels", "determine the genes that control squirrel traits", "make field observations of squirrels in their natural habitat", "read articles about the energy and nutrient requirements of squirrels" ]
C
null
math_qa
mathqa_03_02053
a small , rectangular park has a perimeter of 560 feet and a diagonal measurement of 100 feet . what is its area , in square feet ?
[ "4,800", "19,600", "20,000", "20,400" ]
A
"you can avoid a lot of work in this problem by recognizing that , with the info provided , the diagonal forms a triangle inside the rectangle with sides that have a 3 : 4 : 5 ratio . diagonal = 200 2 x + 2 y = 560 , or x + y = 280 a ^ 2 + b ^ 2 = c ^ 2 for each the sides of the triangle using the ratio 3 : 4 : 5 for s...
math_qa
mathqa_03_03140
find the smallest number of five digits exactly divisible by 32 , 40,56 and 64 .
[ "11020", "11030", "11040", "11060" ]
C
"smallest number of five digits is 10000 . required number must be divisible by l . c . m . of 32,40 , 56,64 i . e 2240 , on dividing 10000 by 2240 , we get 1200 as remainder . therefore , required number = 10000 + ( 2240 â € “ 1200 ) = 11040 . answer is c ."
openbookqa
obqa_02_02723
If one where to get high at Mt. Everest it would mean they are
[ "arriving at airport", "waiting for cabs", "at the bottom", "at the apex" ]
D
high means great in altitude
sciq
sciq_01_09162
What word describes a carbonyl where the carbon atom makes single bonds with two others?
[ "ketones", "photons", "ions", "acetone" ]
A
Ketones are carbonyls in which the carbon atom makes single bonds with two other carbon atoms. Ketones are less reactive than aldehydes and are a common component in nail polish removers and paint strippers.
math_qa
mathqa_03_02593
one hour after yolanda started walking from x to y , a distance of 52 miles , bob started walking along the same road from y to x . if yolanda ' s walking rate was 3 miles per hour and bob т ' s was 4 miles per hour , how many miles had bob walked when they met ?
[ "28", "23", "22", "21" ]
A
"when b started walking y already has covered 3 miles out of 52 , hence the distance at that time between them was 52 - 3 = 49 miles . combined rate of b and y was 3 + 4 = 7 miles per hour , hence they would meet each other in 49 / 7 = 7 hours . in 6 hours b walked 7 * 4 = 28 miles . answer : a ."
sciq
sciq_01_03011
How much electricity is generated by an average car battery?
[ "twelve volts", "eight volts", "six volts", "ten volts" ]
A
The description given above describes the process that occurs in one cell of a lead-acid battery. Because cars require a battery with a higher voltage than can be obtained with a single cell, car batteries generally consist of several cells connected together to produce the desired voltage output. A typical car battery...
sciq
sciq_01_11359
What term is used to describe large numbers of species that go extinct in a short amount of time?
[ "organic extinction", "formation extinction", "mass extinction", "species extinction" ]
C
Sometimes large numbers of species go extinct in a short amount of time. This is a mass extinction . The causes of different mass extinctions are different: collisions with comets or asteroids, massive volcanic eruptions, or rapidly changing climate are all possible causes of some of these disasters ( Figure below ).
ARC-Challenge
arc_04_02436
A ball is dropped from different heights. When the ball is dropped from the highest height, it makes the greatest noise or vibration when it lands on the ground. What is the best explanation for the ball making the greatest noise?
[ "The air pushes down more and the ball goes faster.", "Gravity pulls for a longer time and the ball goes faster.", "The ball is gaining weight and going faster.", "The ball is warming up and going faster." ]
B
null
sciq
sciq_01_03985
What do voltmeters measure?
[ "amplitude", "temperature", "frequency", "voltage" ]
D
21.4 DC Voltmeters and Ammeters • Voltmeters measure voltage, and ammeters measure current. • A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit. • An ammeter is placed in series to get the full current flowing through a ...
sciq
sciq_01_07333
When a stream flows from a hard to soft rock area, what is often formed?
[ "a lake", "a waterfall", "a river", "a riverbank" ]
B
Mountain streams may erode waterfalls. As shown in Figure below , a waterfall forms where a stream flows from an area of harder to softer rock. The water erodes the softer rock faster than the harder rock. This causes the stream bed to drop down, like a step, creating a waterfall. As erosion continues, the waterfall gr...
medmcqa
medmcqa_05_04628
A 22 year old college going adult has H/o sexual exposure with commercial sex worker, now presenting with painful genital lesions and lymphadenopathy in right inguinal region. What is the diagnosis?
[ "Syphilis", "Chancroid", "LGV", "Gonorrhea" ]
B
Ans. (b) ChancroidRef: MICRONS- Microbiology simplified - 2nd ed - by Malathi MurugesanDiseaseUlcerLymphnodesPrimary syphilisChancre painlessPainless-bilateralChancroidpainfulPainful -usually unilateralDonovanosisPainless (beefy red)PSEUDOBUBO (lesion appearing in groin may present like lymphadenopathy prior to rupture...
medmcqa
medmcqa_05_04926
Which of the following is teratogenic: March 2011
[ "Folate", "Cyanocobalamin", "Vitamin A", "Vitamin C" ]
C
Ans. C: Vitamin APharmacological doses of vitamin A are teratogenic and in pregnancy the daily dose must not exceed 6000-8000 IU.Synthetic analogues of vitamin A:TretinoinIsotretinoinEtretinateAcetretinTeratogenic drugsDrugs and medications:- Tobacco Caffeine- Drinking alcohol (ethanol) (fetal alcohol spectrum disorder...
ARC-Easy
arc_04_00939
Fossil records indicate that Earth was first inhabited by bacteria-like organisms. These organisms
[ "were single-celled.", "had organ systems.", "were multi-cellular.", "had small appendages." ]
A
null
math_qa
mathqa_03_01499
a and b walk around a circular track . they start at 9 a . m . from the same point in the opposite directions . a and b walk at a speed of 2 rounds per hour and 3 rounds per hour respectively . how many times shall they cross each other before 11 : 00 a . m . ?
[ "8", "7", "6", "15" ]
D
"sol . relative speed = ( 2 + 3 ) = 5 rounds per hour . so , they cross each other 5 times in an hour . hence , they cross each other 15 times before 11 : 00 a . m . answer d"
math_qa
mathqa_03_01419
if the numbers 1 to 99 are written on 99 pieces of paper , ( one on each ) and one piece is picked at random , then what is the probability that the number drawn is neither prime nor composite ?
[ "1 / 50", "1 / 25", "1 / 99", "1" ]
C
"there are 25 primes , 73 composite numbers from 1 to 100 . the number which is neither prime nor composite is 1 . therefore , required probability = 1 / 99 . answer : c"
sciq
sciq_01_08267
Aquatic biomes in the ocean are called what?
[ "jungle biomes", "artificial biomes", "marine biomes", "arid biomes" ]
C
Aquatic biomes in the ocean are called marine biomes. Organisms that live in marine biomes must be adapted to the salt in the water. For example, many have organs for excreting excess salt. Marine biomes include the oceans, coral reefs, and estuaries ( Figure below ). The oceans are the largest of all the ecosystems. T...
ARC-Easy
arc_04_00468
A flower produces seeds that fall to the ground and grow into new plants that produce more flowers. The seeds begin to grow by the process of
[ "fertilization.", "germination.", "maturation.", "pollination." ]
B
null
medmcqa
medmcqa_05_04811
Bestiality is -
[ "Having intercourse with an animal", "Cruelty to animals", "Cruelty to fellow human", "Beast like behaviour of an insane" ]
A
Bestiality is sexual intercourse by a human being with an animal.
medmcqa
medmcqa_05_01681
Bosniak classification is for?
[ "Renal tuberculosis", "Renal cysts", "RCC", "VUR" ]
B
The Bosniak classification system of renal cystic masses divides renal cystic masses into five categories based on imaging characteristics on contrast-enhanced CT. It is helpful in predicting a risk of malignancy and suggesting either follow up or treatment. Classification: Bosniak I -Simple cyst , imperceptible wall; ...
medmcqa
medmcqa_05_04937
Common age for otosclerosis is
[ "5-10 years", "10-20 years", "20-30 years", "30-45 years" ]
C
Hearing loss usually stas between 20 to 30 years of age and is rare before 10 and after 40 years. (Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 95)
math_qa
mathqa_03_00772
two good train each 250 m long , are running in opposite directions on parallel tracks . their speeds are 45 km / hr and 30 km / hr respectively . find the time taken by the slower train to pass the driver of the faster one .
[ "12 sec", "24 sec", "48 sec", "60 sec" ]
B
"sol . relative speed = ( 45 + 30 ) km / hr = ( 75 x 5 / 18 ) m / sec = ( 125 / 6 ) m / sec . distance covered = ( 250 + 250 ) m = 1000 m . required time = ( 500 x 6 / 125 ) sec = 24 sec . answer b"
openbookqa
obqa_02_00098
The way that squirrels put away food during the cool season ensures that they
[ "survive", "eat", "live", "grow" ]
A
squirrels gather nuts in the autumn to eat during the winter
sciq
sciq_01_00219
What is formed when an oxygen atom picks up a pair of hydrogen ions from a solution?
[ "liquid", "turpentine", "ammonia", "water" ]
D
math_qa
mathqa_03_00613
after decreasing 24 % in the price of an article costs rs . 988 . find the actual cost of an article ?
[ "1667", "6789", "1300", "6151" ]
C
"cp * ( 76 / 100 ) = 988 cp = 13 * 100 = > cp = 1300 answer : c"
math_qa
mathqa_03_03430
a car covers a distance of 624 km in 6 â ½ hours . find its speed ?
[ "104", "190", "109", "278" ]
C
explanation : 624 / 6 = 104 kmph answer : c
openbookqa
obqa_02_02913
What one animal commonly associated with America and is the animal on a one dollar bill would eat the long eared animal on a cartoon commonly eating a carrot and saying What's up doc??
[ "Jackal", "Wolf", "Eagle", "Bear" ]
C
eagles eat rabbits
sciq
sciq_01_03478
What occurs between long warm climate periods?
[ "drought", "mass extinction", "ice ages", "hurricanes" ]
C
Earth’s climate has changed many times. Long warm periods were broken up by ice ages. Over the past 150 years, climate has warmed quickly.
ARC-Easy
arc_04_01829
Which of the following would most likely happen if grasses and shrubs were removed from a rural Massachusetts ecosystem?
[ "There would be an increase in consumers in the ecosystem.", "There would be an increase of photosynthesis in the ecosystem.", "There would be a decrease in food energy produced by the ecosystem.", "There would be a decrease of carbon dioxide available to the ecosystem." ]
C
null
sciq
sciq_01_04937
What is the second highest mountain in the world, at over 28,000 feet?
[ "everest", "k2", "makalu", "pikes peak" ]
B
The Karakoram Range is part of the Himalaya Mountains. K2, pictured here, is the second highest mountain the world at over 28,000 feet. The number and height of mountains is impressive.
sciq
sciq_01_02551
Which part of the body has mucus and hair to trap dust and also warms and moistens air so to not harm lung tissue?
[ "the tongue", "the throat", "the ear", "the nose" ]
D
In the nose, mucus and hairs trap any dust or other particles in the air. The air is also warmed and moistened so it won’t harm delicate tissues of the lungs.
ARC-Challenge
arc_04_02480
Young robins build the same kinds of nests their parents build even if the young birds have never seen their parents build a nest. This is an example of
[ "a learned behavior.", "an inherited behavior.", "a physical characteristic.", "acquired characteristic." ]
B
null
sciq
sciq_01_03131
What physical property of matter reflects how closely packed the particles are?
[ "diameter", "strength", "volume", "density" ]
D
Density is an important physical property of matter. It reflects how closely packed the particles of matter are. Density is calculated from the amount of mass in a given volume of matter, using the formula:.
sciq
sciq_01_00348
Water is recycled constantly through which system?
[ "the troposphere", "the habitat", "the ecosystem", "the hydropshere" ]
C
Water is recycled constantly through the ecosystem. That means any water you drank today has been around for millions of years. You could be drinking water that was once drunk by George Washington, the first humans, or even the dinosaurs.
sciq
sciq_01_06496
What effect causes global winds to blow on a diagonal over the earth's surface?
[ "resonant effect", "coriolis effect", "centrifugal effect", "dopler effect" ]
B
Global winds occur in belts around the globe. They are caused by unequal heating of Earth’s surface. The Coriolis effect causes global winds to blow on a diagonal over the surface. Unequal heating also causes jet streams high in the troposphere.
sciq
sciq_01_04703
At the time of birth, bones of the brain case are separated by what wide areas of fibrous connective tissue, which later become sutures?
[ "fontanelles", "fluctuations", "sporozoans", "cerebellum" ]
A
7.5 Embryonic Development of the Axial Skeleton Formation of the axial skeleton begins during early embryonic development with the appearance of the rod-like notochord along the dorsal length of the early embryo. Repeating, paired blocks of tissue called somites then appear along either side of notochord. As the somite...
math_qa
mathqa_03_02610
a , b and c are partners . a receives 2 / 3 of profits , b and c dividing the remainder equally . a ' s income is increased by rs . 800 when the rate to profit rises from 5 to 7 percent . find the capital of b ?
[ "3999", "10000", "2500", "2772" ]
B
"a : b : c = 2 / 3 : 1 / 6 : 1 / 6 = 4 : 1 : 1 x * 2 / 100 * 2 / 3 = 800 b capital = 60000 * 1 / 6 = 10000 . answer : b"
openbookqa
obqa_02_04674
More dirt and sand gets deposited in a flat area near a river whenever
[ "the river is hit with an extremely large amount of precipitation in a day", "a deer is hunted on the river bank", "birds fly over the area", "a helicopter flies too low over the land" ]
A
when a river floods , that river deposits sediment in flood plains
openbookqa
obqa_02_03685
Which can go in the recycled bin
[ "duct tape", "hair gel", "Sprite container", "cell phones" ]
C
recyclable means a material can be recycled
sciq
sciq_01_07395
The pulmonary circulation carries blood between what two organs?
[ "lungs and kidney", "heart and lungs", "heart and pancreas", "kidney and heart" ]
B
The pulmonary circulation carries blood between the heart and lungs. The systemic circulation carries blood between the heart and body.
openbookqa
obqa_02_02738
Having food has a positive impact on the health of what?
[ "organism charts", "water", "sunlight", "critters" ]
D
having food has a positive impact on an organism 's health
sciq
sciq_01_06552
What contains most of the structures found in skin?
[ "epidermis", "subcutaneous layer", "basal layer", "dermis" ]
D
Structures of the Dermis. The dermis contains most of the structures found in skin.
ARC-Challenge
arc_04_02687
Which of these is true when a piece of wood is completely burned in a fire?
[ "The change in the wood is reversible.", "The energy in the wood is destroyed.", "The change in the wood is physical.", "The energy in the wood is transformed." ]
D
null
medmcqa
medmcqa_05_02701
Ammonia is detoxified in brain to-
[ "Uric acid", "GABA", "Urea", "Glutamine" ]
D
The brain is a rich source of glutamine synthase and predominantly detoxifies ammonia by synthesis of glutamate.
math_qa
mathqa_03_02804
a 6 by 8 rectangle is inscribed in circle . what is the circumference of the circle ?
[ "5 π", "10 π", "15 π", "20 π" ]
B
"the diagonal of the rectangle will be the diameter of the circle . and perimeter = 2 * pi * r ans : b"
sciq
sciq_01_06357
What senses the movement of liquid in ear canals?
[ "muscle cells", "Brain Cells", "hair cells", "Ear Drum" ]
C
This bottle of water models the semicircular canals in your ears. When you tip the bottle, the water moves up or down the sides of the bottle; when you tip your head, the liquid inside the semicircular canals moves up and down the sides of the canals. Tiny hair cells lining the canals sense the movement of liquid and s...
sciq
sciq_01_07558
What causes maple leaves to change their colors?
[ "artificial preservatives", "chemical reactions", "radiation reactions", "factor reactions" ]
B
These vividly colored maple leaves were all bright green during the summer. Every fall, leaves of maple trees change to brilliant red, orange, and yellow colors. A change of color is a sign that a chemical change has taken place. Maple leaves change color because of chemical reactions.
sciq
sciq_01_02659
Sharing a phylum with insects, spiders, daddy-long-legs, scorpions, and ticks belong to what class?
[ "annelids", "mammals", "arachnids", "reptiles" ]
C
Arachnids include spiders, daddy-long-legs, scorpions, and ticks.
medmcqa
medmcqa_05_03669
Chronic Carrier State is seen in -
[ "Measles", "Influenza", "HepatitisB", "Pertussis" ]
C
Ans. is 'c' i.e., hepatitis B Incubatory carrierConvalescent carrierHealthy carrierChronic carriero Measleso Mumpso Polioo Pertusiso Influenzao Diphtheriao Hepatitis Bo Typhoid fevero Dysentery (bacillary and amebic)o Cholerao Diphtheriao Whooping cougho Poliomyelitiso Cholerao Meningoccal meningitiso Salmonellao Dipht...
math_qa
mathqa_03_01483
if 10 spiders make 5 webs in 5 days , then how many days are needed for 1 spider to make 1 web ?
[ "10", "9", "5", "15" ]
A
"explanation : let , 1 spider make 1 web in x days . more spiders , less days ( indirect proportion ) more webs , more days ( direct proportion ) hence we can write as ( spiders ) 10 : 1 ( webs ) 1 : 5 } : : x : 5 â ‡ ’ 10 ã — 1 ã — 5 = 1 ã — 5 ã — x â ‡ ’ x = 10 answer : option a"
ARC-Easy
arc_04_01955
To compare the hardness of different minerals, it would be BEST to find
[ "the color of the minerals.", "which minerals scratch other minerals.", "which minerals reflect light most strongly.", "the samples that feel smoothest to the touch." ]
B
null
medmcqa
medmcqa_05_04578
A 40 years old male patient presented to surgery OPD with history of serous discharge from an external opening located in perianal region(posterior openings). On examination, the location of external opening was at 4'O clock position. What is the location of internal opening?
[ "a. 3'O clock", "4'O clock", "5'O clock", "6'O clock" ]
D
Goodsall's Rule: Anterior openings - Straight tracks - Location of external & internal openings are in the same position. Eg: Location of external opening is 1'0 clock position the location of internal opening is also at 1'0 clock position Posterior openings - Curved tracks - Location of external & internal opening - N...
sciq
sciq_01_06609
Which metal is not a solid even at room temperature?
[ "iron", "mercury", "copper", "aluminum" ]
B
A metal is an element that is a good conductor of heat and electricity. Metals are also malleable, which means that they can be hammered into very thin sheets without breaking, and ductile, which means that they can be drawn into wires. When a fresh surface of any metal is exposed, it will be very shiny, because it ref...
ARC-Easy
arc_04_01422
Which of the following best describes an atom?
[ "protons and electrons grouped together in a random pattern", "protons and electrons grouped together in an alternating pattern", "a core of protons and neutrons surrounded by electrons", "a core of electrons and neutrons surrounded by protons" ]
C
null
medmcqa
medmcqa_05_04609
Stereoanesthesia is due to lesion of
[ "Nucleus Gracilis", "Nucleus cuneatus", "Cerebral cortex", "Spinothalamic tract" ]
C
(C) Cerebral cortex # Stereognosis:> The ability to identify objects by handling them with out looking at them is called stereognosis.> Ability obviously depends upon relatively intact touch & pressure sensation & is compromised when the dorsal columns are dam- aged.> It also has a large cortical component; impaired co...
sciq
sciq_01_08156
What will happen to a rock when it's under tremendous stress?
[ "it will rebound", "it will solidify", "it will slow", "it will fracture" ]
D
A rock under enough stress will fracture. There may or may not be movement along the fracture. If there is not movement, the fracture is a joint. If there is movement, the fracture is a fault.
sciq
sciq_01_01446
What disease is described as a respiratory disorder characterized by wheezing, coughing, and a feeling of constriction in the chest?
[ "indigestion", "asthma", "inflammation", "dementia" ]
B
Respiratory system disorders are directly related to air pollution. These disorders have severe effects on human health, some leading to death directly related to air pollution. Air pollution related respiratory disorders include asthma, bronchitis, and emphysema. Asthma is a respiratory disorder characterized by wheez...
medmcqa
medmcqa_05_04062
Which of the following is the order of activation after stimulation of Purkinji fibrs is :
[ "Septum -> Endocardium -> Epicardium", "Endocrdium -> Septum -> Epicardium", "Epicardium -> Septum -> Endocardium", "Septum -> Epicardium -> Endocardium" ]
A
Ans. is 'a' is Septum - Endocardium - Epicardium Order of spread of cardiac excitationSA node - AV node - Bundle of HIS* - Purkinje system* - Ventricular muscle.SA node - AV node - Bundle of HIS* - Purkinje system* - Ventricular muscle.Order of activation of ventricular muscle.Depolarization starts of the left side of ...
sciq
sciq_01_04259
Viroids are plant pathogens much simpler than what, but like them can reproduce only within a host cell?
[ "pests", "viruses", "bacteria", "parasites" ]
B
Viroids Viroids are plant pathogens: small, single-stranded, circular RNA particles that are much simpler than a virus. They do not have a capsid or outer envelope, but like viruses can reproduce only within a host cell. Viroids do not, however, manufacture any proteins, and they only produce a single, specific RNA mol...
sciq
sciq_01_09280
Most of these bacterial illnesses can be prevented with proper cooking of food and washing what?
[ "hands", "hair", "teeth", "vegetables" ]
A
Bacteria that cause foodborne illnesses include Salmonella , a bacterium found in many foods, including raw and undercooked meat, poultry, dairy products, and seafood. Campylobacter jejuni is found in raw or undercooked chicken and unpasteurized milk. Several strains of E. coli can cause illnesses, and are found in raw...
ARC-Easy
arc_04_01726
Which type of energy conversion occurs in a flashlight?
[ "chemical to light", "mechanical to light", "electrical to chemical", "mechanical to chemical" ]
A
null
sciq
sciq_01_04547
What delivers power to the chemical factory chloroplasts?
[ "chlorophyll", "water", "oxygen", "the sun" ]
D
openbookqa
obqa_02_01395
when fuel efficiency increases, gasoline use in cars will
[ "stay the same", "cause more windstorms", "increase", "decrease" ]
D
as mileage per galon of gasoline increases , the amount of gasoline used will decrease
math_qa
mathqa_03_00983
a circular mat with radius 10 inches is placed on a square tabletop , each of whose sides is 24 inches long . which of the following is closest to the fraction of the tabletop covered by the mat ?
[ "5 / 12'", "2 / 5'", "0.5451'", "3 / 4'" ]
C
c . it is a circle inscribed in a square . square side = 24 - - - > square ( table ) area = 24 ^ 2 circle diameter = 20 - - - > circle area = pir ^ 2 = 100 pi ( where pi = ~ 3.14 ) covered fraction = 100 * 3.14 / 24 * 24 = ~ 314 / 24 * 24 = 0.5451 c
math_qa
mathqa_03_03782
for any integer p , * p is equal to the product of all the integers between 1 and p , inclusive . how many prime numbers are there between * 5 + 3 and * 5 + 5 , inclusive ?
[ "none", "one", "two", "three" ]
A
generally * p or p ! will be divisible by all numbers from 1 to p . therefore , * 5 would be divisible by all numbers from 1 to 5 . = > * 5 + 3 would give me a number which is a multiple of 3 and therefore divisible ( since * 5 is divisible by 3 ) in fact adding anyprimenumber between 1 to 5 to * 5 will definitely be d...
ARC-Easy
arc_04_01368
Which landforms are most like hills but are much taller?
[ "caves", "mountains", "plains", "valleys" ]
B
null
sciq
sciq_01_00311
The process of breaking down food into nutrients is known as __________
[ "filtration", "energy", "absorption", "digestion" ]
D
As food is pushed through the GI tract by peristalsis, it undergoes digestion. Digestion is the process of breaking down food into nutrients. There are two types of digestion: mechanical digestion and chemical digestion.
sciq
sciq_01_01103
Co 2 , h 2 o, methane, o 3 , nitrous oxides (no and no 2 ), and chlorofluorocarbons (cfcs) are known as what type of gases?
[ "hydrogen gases", "greenhouse gases", "carbonate gases", "chemical gases" ]
B
Greenhouse gases include CO 2 , H 2 O, methane, O 3 , nitrous oxides (NO and NO 2 ), and chlorofluorocarbons (CFCs). All are a normal part of the atmosphere except CFCs. The table below shows how each greenhouse gas naturally enters the atmosphere ( Table below ).
sciq
sciq_01_09329
What are the three types of symbiosis?
[ "connectionism , parasitism , commensalism", "mutualism, parasitism, commensalism", "internalization , parasitism , commensalism", "commensalism, osmosis, internalization" ]
B
Symbiosis is a close relationship between two species in which at least one species benefits. For the other species, the relationship may be beneficial, harmful, or neutral. There are three types of symbiosis: mutualism, parasitism, and commensalism.
openbookqa
obqa_02_04693
Gravity is an example of which?
[ "Magnetic Force", "Speed", "Contact Force", "Non-Contact Force" ]
D
non-contact forces can affect objects that are not touching
medmcqa
medmcqa_05_00827
Antrum of Highmore is another name for:
[ "Maxillary", "Ethmoid", "Sphenoid", "Frontal" ]
A
Maxillary sinus is also called as antrum of highmore and is the first to develop in human fetus.It is the largest paranasal sinus (15 ml capacity in adults).
sciq
sciq_01_07176
What is the term for geological activity that occurs within a plate?
[ "deformation activity", "disruption activity", "intraplate activity", "perennials activity" ]
C
Not all geological activity is found at plate boundaries. Activity within a plate is called intraplate activity. Most intraplate activity occurs at hotspots.
sciq
sciq_01_01155
Who created the periodic table?
[ "Gregor Mendel", "Niels Bohr", "dmitri mendeleev", "Isaac Newton" ]
C
In 1869, a Russian scientist named Dmitri Mendeleev created the periodic table , which is a way of organizing elements according to their unique characteristics, like atomic number, density, boiling point, and other values ( Figure below ). Each element is represented by a one or two letter symbol. For example, H stand...
sciq
sciq_01_07999
Desert plants have evolved processes to conserve water and deal with harsh conditions. a more efficient use of co2 allows plants to adapt to living with what?
[ "more sunlight", "less competition", "less water", "more water" ]
C
perpendicular to the surface at the point where the ray strikes the surface.
ARC-Easy
arc_04_00296
A forest was cleared for the building of a resort, but before construction began, secondary succession set in. Which of these describes why secondary succession appeared so rapidly?
[ "The clearing allowed mosses to grow quickly.", "Rock weathering occurred for lichens to grow.", "Exposed substrates allowed microbes to grow.", "The soil components remained for plants to grow." ]
D
null
openbookqa
obqa_02_02424
What could be used to examine the legs of a lady bug?
[ "a pedometer", "a stethoscope", "a loupe", "a telescope" ]
C
magnifying glass is used to see small things by making objects appear bigger
sciq
sciq_01_10585
All three types of convergent plate boundaries produce what destructive phenomenon?
[ "earthquake", "storm", "volcano", "tornado" ]
A
All three types of convergent plate boundaries produce massive earthquakes.
sciq
sciq_01_10146
What two states of matter are included in the category "fluids"?
[ "solids and gases", "liquids and gases", "liquids and soilds", "bacteria and gases" ]
B
Fluid friction is friction that acts on objects that are moving through a fluid. A fluid is a substance that can flow and take the shape of its container. Fluids include liquids and gases. If you’ve ever tried to push your open hand through the water in a tub or pool, then you’ve experienced fluid friction between your...
sciq
sciq_01_01436
Glucose, galactose, and fructose are all what?
[ "hexoses", "structoxes", "fluxes", "alucoxes" ]
A
Figure 3.5 Glucose, galactose, and fructose are all hexoses. They are structural isomers, meaning they have the same chemical formula (C6H12O6) but a different arrangement of atoms.
ARC-Easy
arc_04_01548
Why are some rocks smoother and rounder than others?
[ "They have the shapes of the minerals from which they are made.", "They were smoothed by the action of wind and water.", "They were squeezed up through the soil.", "They hardened in rounded pockets of soil." ]
B
null
sciq
sciq_01_05588
The process when heat is released is referred to as what?
[ "geothermal", "endothermic", "exothermic", "insular" ]
C
Heat involves the transfer of thermal energy between two bodies that are at different temperatures. If you held a flask containing a reaction that releases energy, you would be able to feel the heat being transferred from the reaction into your hand. A process in which heat is released is referred to as exothermic . Co...
math_qa
mathqa_03_02891
one side of a rectangular field is 16 m and one of its diagonal is 17 m . find the area of the field .
[ "100", "120", "91.2", "180" ]
C
"solution other side = √ ( 17 ) 2 - ( 16 ) 2 = √ 289 - 256 = √ 33 = 5.7 m . ∴ area = ( 16 x 5.7 ) m 2 = 91.2 m 2 . answer c"
medmcqa
medmcqa_05_02740
Which of the following represents the concentration of adrenaline which is used with lidocaine ?
[ "0.180555556", "1.430555556", "1:20000", "1:200000" ]
D
Lidocaine stabilizes the neuronal membrane by inhibiting the ionic fluxes required for the initiation and conduction of nerve impulses, thereby effecting local anesthetic action. Epinephrine, in concentrations of 5 mcg/ml, is commonly used to decrease the absorption of local anesthetics. A 5 mcg/ml (1:200,000) dose of ...
sciq
sciq_01_08034
What kind of respiration allows rapid production of atp in low oxygen situations?
[ "enzymatic", "aerobic", "anabolic", "anaerobic" ]
D
Muscle color reflects its specialization for aerobic or anaerobic metabolism. Although humans are obligate aerobes , our muscle cells have not given up on ancient pathways which allow them to keep producing ATP quickly when oxygen runs low. The difference is more pronounced in chickens and grouse ( Figure below ), whic...
sciq
sciq_01_00731
What is another term for hydraulic fracturing?
[ "fracking", "permeating", "drilling", "erupting" ]
A
Hydraulic fracturing, known as fracking, is a relatively new method for extracting natural gas. Fracking may be linked to groundwater contamination and small earthquakes in non-seismic regions.
openbookqa
obqa_02_00322
A car engine is a source of heat and therefore needs
[ "radiator fluid", "water added", "wiper fluid", "gasoline" ]
A
a car engine is a source of heat
sciq
sciq_01_08279
What are all living things made of?
[ "water", "cells", "proteins", "muscles" ]
B
Cells are the tiny building blocks of living things. They couldn’t be discovered until the microscope was invented. The discovery of cells led to the cell theory. This is one of the most important theories in life science.
sciq
sciq_01_10562
The medieval catapult has a heavy ballast on one end and what on the other end?
[ "pivot", "projectile", "propellant", "fragment" ]
B
openbookqa
obqa_02_02447
The more that worms make their way through compost, the more
[ "bees in skies", "vitamins in dirt", "trees in fields", "snakes on planes" ]
B
decomposition increases the amount of nutrients in the soil
medmcqa
medmcqa_05_03836
Which pa of brain has olivary nucleus?
[ "Pons", "Midbrain", "Spinal cord", "Medulla" ]
D
Ans. is'd'i.e., MedullaOlivary nucleus is seen in medulla oblongata.
openbookqa
obqa_02_02534
Jack rabbits move very fast to avoid
[ "squirrel", "mice", "snails", "hawks" ]
D
some animals move quickly to escape predators
medmcqa
medmcqa_05_00109
'Macewan sign' is seen in:
[ "Alcoholic intoxication", "Organophosphorus poisoning", "Barbiturate poisoning", "Dhatura poisoning" ]
A
A i.e. Alcohol intoxication - Loss of judgment (ie poor judgment), loss of capacity for self criticism and decreased skilled motor movements are seen at 80 to 150 mg% of blood alcoholQ. - Mac Ewan's signQ, Morbid jealousyQ, Micturation syncope & Munich beer hea and alcohol gaze nystagmusare found in alcohol intoxicatio...
sciq
sciq_01_09282
What is the region known as the myelencephalon in the embryonic brain?
[ "Diencephalon", "Telencephalon", "medulla", "Mesencephalon" ]
C
Medulla The medulla is the region known as the myelencephalon in the embryonic brain. The initial portion of the name, “myel,” refers to the significant white matter found in this region—especially on its exterior, which is continuous with the white.
openbookqa
obqa_02_04516
Flashlights require batteries
[ "to make light bright rooms darker", "to meet weight requirements", "to be used as a weapon", "to properly illuminate objects" ]
D
a battery converts chemical energy into electrical energy
sciq
sciq_01_10283
How do you determine the atomic weight of an element?
[ "add up protons and neutrons", "subtract protons from electrons", "divide protons and neutrons", "multiply protons and neutrons" ]
A
The atomic weight of an element is a weighted average of its isotopes.
math_qa
mathqa_03_04337
the average of first 80 non - zero positive numbers is :
[ "22.25", "31.25", "35", "40.5" ]
D
"explanation : sum of first n natural numbers = n ( n + 1 ) / 2 so , average of first n natural numbers = n ( n + 1 ) / 2 n = ( n + 1 ) / 2 required average = ( 80 + 1 ) / 2 = 81 / 2 = 40.5 . answer : d"
math_qa
mathqa_03_00163
the product of a and b is equal to 11 more than twice the sum of a and b . if b = 5 , what is the value of b - a ?
[ "- 2", "5", "7", "24" ]
A
"ab = 11 + 2 ( a + b ) 5 a = 11 + 2 a + 10 3 a = 21 a = 7 b - a = 5 - 7 = - 2 a is the answer"
sciq
sciq_01_00208
In most animals, what sense is related to balance or equilibrium?
[ "tasting", "feeling", "hearing", "vision" ]
C