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7.76k
openbookqa
obqa_02_02410
A cow will gain energy from eating
[ "dandelions", "eggs", "frogs", "birds" ]
A
cows only eat plants
ARC-Easy
arc_04_00428
A layer of solid brittle rock comprises the outer 100 kilometers of Earth. This layer, which contains both the crust and the upper mantle, is called the
[ "core.", "sediment.", "lithosphere.", "hemisphere." ]
C
null
sciq
sciq_01_04983
How many processes contribute to the emergence of viral diseases?
[ "three", "four", "one", "two" ]
A
sciq
sciq_01_04913
What do you call the lower layer of soil that is permanently frozen, and is a frequent feature of tundra?
[ "solvent", "underfoot", "permafrost", "solid" ]
C
Polar climates are found near the North and South Poles. They also occur on high mountains at lower latitudes. The summers are very cool, and the winters are frigid. Precipitation is very low because it’s so cold. The growing season is very short. Tundra prefers areas of permafrost. Permafrost is a lower layer of soil ...
sciq
sciq_01_02869
Made of hot, solid rock, the mantle is beneath what layer of the earth?
[ "core", "crust", "volcanic", "liquid" ]
B
Beneath the crust is the mantle . The mantle is made of hot, solid rock. They know this because of seismic waves, meteorites, and the heat that comes from inside the planet. Mantle rock is mostly peridotite , which is rich in iron and magnesium ( Figure below ). Peridotite is rare at Earth's surface.
medmcqa
medmcqa_05_01249
A newborn baby has multiple hemorrhages. Clotting studies demonstrate an elevated prothrombin time. An abnormality of which of the following biochemical processes is likely present in this patient?
[ "Conversion of homocysteine to methionine", "Conversion of methylmalonyl CoA to succinyl CoA", "Degradation of cystathionine", "Formation of gamma-carboxyglutamate residues" ]
D
Deficiency of vitamin K produces a clotting disorder characterized by an elevated prothrombin time and easy bleeding, paicularly in neonates (hemorrhagic disease of the newborn). The biochemical basis for this hemorrhagic tendency is that glutamate residues on Factors II (Thrombin), VII, IX, and X must be conveed to ga...
sciq
sciq_01_09484
In what form do plants and animals store sugar for later use?
[ "storage polysaccharides", "carrying polysaccharides", "management polysaccharides", "processing polysaccharides" ]
A
medmcqa
medmcqa_05_02999
Major site of protein glycosylation is
[ "ER and golgi body", "Ribosome and golgi body", "ER and ribosome", "Ribosome and cytoplasm" ]
A
Because many glycosylation reactions occur within the lumen of the Golgi apparatus, carrier systems (permeases and transpoers) are required to transpo nucleotide sugars across the Golgi membrane.Ref: Harpers Illustrated Biochemistry, 30th edition, page no: 572
medmcqa
medmcqa_05_02558
Which drug is given as a single dose to prevent mother to child HIV transmission: March 2007
[ "Didanosine", "Nevirapine", "Acyclovir", "Nelfinavir" ]
B
Ans. B: Nevirapine Majority of mother to child transmission of HIV-1 occurs during the intrapaum period. Mechanism of veical transmission include infection after rupture of the membranes and direct contact of the fetus with infected secretions of blood from the maternal genital tract. Nevirapine is a non-nucleoside rev...
sciq
sciq_01_04534
What does an electric field surround?
[ "charged ions", "neutral particles", "a charged particle", "negative particle" ]
C
An electric field is a space surrounding a charged particle where the particle exerts electric force.
math_qa
mathqa_03_01951
if you add all the numbers on your mobile phone except 9 , what is the answer ?
[ "45", "28", "65", "36" ]
D
"we have to add 0 to 8 to find the answer . therefore 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36 answer is d"
math_qa
mathqa_03_00154
if two integers x , y ( x > y ) are selected from - 10 to 5 ( inclusive ) , how many possible cases are there ?
[ "105", "120", "190", "210" ]
B
"if two integers x , y ( x > y ) are selected from - 10 to 5 ( inclusive ) , how many possible cases are there ? a . 150 b . 180 c . 190 d . 210 e . 240 - - > 16 c 2 = 16 * 15 / 2 = 120 . therefore , the answer is b ."
openbookqa
obqa_02_00746
A seismometer can note how earthquakes are
[ "small", "fast", "strong", "long" ]
C
a seismometer is used to measure the strength or magnitude of an earthquake
medmcqa
medmcqa_05_00456
Asymmetric Moro &;s reflex at birth is indicative of:
[ "HIE", "Brain damage", "Erb's palsy", "Kernicterus" ]
C
Ans. c. Erb's palsy (Ref: Care of Newborn 7/e p334; Ghai 6/e p146; CPDT 18/e p7)Asymmetric Moro's reflex at birth is indicative of Erb's palsy.Moro's Reflex:Obtained by placing the infant in a semi-upright position. The head is momentarily allowed to fall backward, with immediate resupport by the examiner's hand.The ch...
ARC-Challenge
arc_04_02722
In certain species of plants, purple flowers (P) are dominant to white flowers (p). If two heterozygous plants are crossed, what will be the phenotype of the offspring?
[ "100% purple flowers", "100% white flowers", "75% white flowers, 25% purple flowers", "25% white flowers, 75% purple flowers" ]
D
null
sciq
sciq_01_00075
What is the common word for potential difference in a circuit?
[ "voltage", "velocity", "frequency", "watt" ]
A
Conceptual Questions 19.1 Electric Potential Energy: Potential Difference 1. Voltage is the common word for potential difference. Which term is more descriptive, voltage or potential difference? 2. If the voltage between two points is zero, can a test charge be moved between them with zero net work being done? Can this...
openbookqa
obqa_02_01088
Sedimentary rock is where you'll find most
[ "pterodactyl bodies", "flutes", "pebbles", "wings." ]
A
nearly all fossils are found in sedimentary rock
ARC-Challenge
arc_04_02219
An ice cube placed in sunlight melts quickly. Which BEST explains this event?
[ "The Sun is far away.", "The Sun makes heat.", "The ice cube is a solid.", "The ice cube looks clear." ]
B
null
ARC-Challenge
arc_04_02851
Which factor best explains how many diseases, such as cancer, are formed within the body?
[ "A traumatic injury to the body has occurred.", "A disruption in the cell cycle has taken place.", "A response by the immune system was triggered by an allergic reaction.", "A mutation occurred during the process of crossing over." ]
B
null
sciq
sciq_01_08282
What are all tissues external to the vascular cambium called?
[ "nucleus", "bark", "membranes", "larvae" ]
B
sciq
sciq_01_02625
Chelicerata are know for their first pair of appendages, also know as what?
[ "maxillae", "chelicides", "ambers", "chelicerae" ]
D
Subphylum Chelicerata includes animals such as spiders, scorpions, horseshoe crabs, and sea spiders. This subphylum is [4] predominantly terrestrial, although some marine species also exist. An estimated 103,000 described species are included in subphylum Chelicerata. The body of chelicerates may be divided into two pa...
openbookqa
obqa_02_00823
a wren building a home is an example of what type of behavior
[ "good", "inherited", "learned", "bad" ]
B
An example of an inherited behavior is a bird building a nest
sciq
sciq_01_06717
Sandblasting a surface exemplifies what form of erosion?
[ "water", "glacial", "wind", "abrasion" ]
D
Did you ever see workers sandblasting a building to clean it? Sand is blown onto the surface to scour away dirt and debris. Wind-blown sand has the same effect. It scours and polishes rocks and other surfaces. Wind-blown sand may carve rocks into interesting shapes ( Figure below ). This form of erosion is called abras...
openbookqa
obqa_02_04832
A planet that revolves around a star is exposed to what?
[ "mountains", "oceans", "solar rays", "moons" ]
C
a planet is exposed to the heat of the star around which it revolves
sciq
sciq_01_06545
Alzheimer’s disease is a disease that occurs mainly in what population?
[ "white adults", "female adults", "younger adults", "older adults" ]
D
Alzheimer’s disease is another disease that occurs mainly in older adults. In Alzheimer’s disease, a person gradually loses most normal mental functions. The patient typically suffers from increasing memory loss, confusion, and mood swings. The cause of Alzheimer’s isn’t known for certain, but it appears to be associat...
math_qa
mathqa_03_02005
tough and tricky questions : word problems . a salesman ' s income consists of commission and base salary . his weekly income totals over the past 5 weeks have been $ 406 , $ 413 , $ 420 , $ 436 and $ 395 . what must his average ( arithmetic mean ) income over the next 5 weeks be to increase his average weekly income t...
[ "$ 570", "$ 586", "$ 630", "$ 686" ]
B
official solution : ( b ) first , we need to add up the wages over the past 5 weeks : $ 406 + $ 413 + $ 420 + $ 436 + $ 395 = $ 2070 . to average $ 500 over 10 weeks , the salesman would need to earn : $ 500 × 10 = $ 5000 . subtract $ 2070 from $ 5000 to determine how much he would need to earn , in total , over the ne...
sciq
sciq_01_07949
One of the five fundamental conservation laws in the universe refers to conservation of what, which is the product of mass and velocity?
[ "momentum", "light", "fluid", "energy" ]
A
The universe has many remarkable qualities, among them a rather beautiful symmetry: the total amount of motion in the universe balances out … always. This law only makes sense if we measure “motion” in a specific way: as the product of mass and velocity. This product, called momentum , can be exchanged from one object ...
sciq
sciq_01_06527
What do increasing greenhouse gas concentrations in the air do to the earth's temperature?
[ "raise it", "stable it", "Lower it", "Pollute" ]
A
math_qa
mathqa_03_03299
in a group of 100 cars , 37 cars do not have air conditioning . if at least 41 cars have racing stripes , what is the greatest number of cars that could have air conditioning but not racing stripes ?
[ "45", "47", "59", "51" ]
C
"lets assume ac = 63 ( includesonly ac carsandcars with ac and racing stripes ) lets assume rs ( racing stripes ) > = 41 ( includescars with ac and racing stripesandonly racing stripes ) . now since we want to maximize ( only ac ) we have to see to it thatcars with ac and racing stripesis minimal ( assume 0 ) but since...
sciq
sciq_01_08120
While normal light microscopes can magnify objects up to about 1,500 times, what advanced instruments can magnify objects up to 1,000,000 times?
[ "electron microscopes", "micro microscopes", "electric microscopes", "magnetic microscopes" ]
A
Normal light microscopes can magnify objects up to about 1,500 times. Electron microscopes can magnify objects up to 1,000,000 times. Why can electron microscopes magnify images so much? A microscope’s resolution depends on the wavelength of light used. The smaller the wavelength, the more a microscope can magnify. Lig...
math_qa
mathqa_03_00107
the radius of a wheel is 25.4 cm . what is the distance covered by the wheel in making 500 resolutions ?
[ "724 m", "798.3 m", "287 m", "278 m" ]
B
"in one resolution , the distance covered by the wheel is its own circumference . distance covered in 500 resolutions . = 500 * 2 * 22 / 7 * 25.4 = 79829 cm = 798.3 m answer : b"
sciq
sciq_01_11257
Helicopter pilots can recover from piloting errors by decreasing altitude, turning some of their potential energy into what kind of energy?
[ "active", "free", "electrical", "kinetic" ]
D
Helicopter pilots are quite familiar with rotational kinetic energy. They know, for example, that a point of no return will be reached if they allow their blades to slow below a critical angular velocity during flight. The blades lose lift, and it is impossible to immediately get the blades spinning fast enough to rega...
math_qa
mathqa_03_04071
the least number which when increased by 6 each divisible by each one of 24 , 32 , 36 and 54 is :
[ "858", "859", "869", "4320" ]
A
"solution required number = ( l . c . m . of 24 , 32 , 36 , 54 ) - 5 = 864 - 6 = 858 . answer a"
ARC-Easy
arc_04_00648
Which of these is hottest?
[ "The Earth", "Mars", "The Moon", "The Sun" ]
D
null
medmcqa
medmcqa_05_01728
The number of live bihs per 1000 women in the reproductive age group in a year refers to: March 2012
[ "Gross reproduction rate", "Total feility rate", "Net reproduction rate", "General feility rate" ]
D
Ans: D i.e. General feility rate Some impoant rates GRR is number of daughters who would be born to a woman completing her reproductive life at current age specific feility rates TFR is average number of children a woman would bear in her reproductive life span. NRR measures the number of daughters a woman would have i...
openbookqa
obqa_02_02260
A person wants to get better acquainted with dogs, since they have a serious fear of them. This fear was probably
[ "scared", "inherited", "rare", "learned" ]
D
preferences are generally learned characteristics
math_qa
mathqa_03_01283
a dishonest shopkeeper professes to sell pulses at the cost price , but he uses a false weight of 970 gm . for a kg . his gain is … % .
[ "3.09 %", "5.36 %", "4.26 %", "6.26 %" ]
A
"his percentage gain is 100 * 30 / 970 as he is gaining 30 units for his purchase of 970 units . so 3.09 % . answer : a"
medmcqa
medmcqa_05_00087
Most common cause of infant moality?
[ "LBW", "Injury", "A", "Tetanus" ]
A
Ans. is 'a' i.e., LBW
sciq
sciq_01_01771
Where does the heartbeat originate in vertebrates?
[ "the tissue", "the pulse", "the heart", "the blood" ]
C
math_qa
mathqa_03_04099
a committee is reviewing a total of 20 x black - and - white films and 8 y color films for a festival . if the committee selects y / x % of the black - and - white films and all of the color films , what fraction of the selected films are in color ?
[ "40 / 41", "20 / 41", "30 / 41", "60 / 41" ]
A
"say x = y = 10 . in this case we would have : 20 x = 200 black - and - white films ; 8 y = 80 color films . y / x % = 10 / 10 % = 1 % of the black - and - white films , so 2 black - and - white films and all 80 color films , thus total of 82 films were selected . color films thus compose 80 / 82 = 40 / 41 of the selec...
math_qa
mathqa_03_04501
a river 8 m deep and 25 m wide is flowing at the rate of 8 kmph the amount of water that runs into the sea per minute is ?
[ "26666", "26166", "29666", "22666" ]
A
"rate of water flow - 8 kmph - - 8000 / 60 - - 133.33 m / min depth of river - - 8 m width of river - - 25 m vol of water per min - - 133.33 * 8 * 25 - - - 26666 answer a"
sciq
sciq_01_01270
Metabolic pathways are a series of reactions catalyzed by multiple what?
[ "particles", "vitamins", "enzymes", "hormones" ]
C
Figure 4.11 Metabolic pathways are a series of reactions catalyzed by multiple enzymes. Feedback inhibition, where the end product of the pathway inhibits an upstream process, is an important regulatory mechanism in cells.
sciq
sciq_01_08373
What can be calculated by solving the average speed formula?
[ "accelaration", "distance or mass", "mass or time", "distance or time" ]
D
Competition is a relationship between organisms that depend on the same resources. Competition can occur between members of the same species or between members of different species.
sciq
sciq_01_05428
What phylum has the highest number of species on earth?
[ "lophotrochozoa", "lichens", "cephalopods", "arthropods" ]
D
15.3 Flatworms, Nematodes, and Arthropods Flatworms are acoelomate, triploblastic animals. They lack circulatory and respiratory systems, and have a rudimentary excretory system. The digestive system is incomplete in most species. There are four traditional classes of flatworms, the largely free-living turbellarians, t...
openbookqa
obqa_02_03519
When taking a pickax to rocks
[ "pick a location where lots of people will be", "sweep up after yourself to keep the workplace safe", "eschew wearing any safety gear", "clean up is an unnecessary chore" ]
B
breaking apart rocks can cause debris
math_qa
mathqa_03_02311
if the number is decreased by 5 and divided by 7 the result is 7 . what would be the result if 2 is subtracted and divided by 13 ?
[ "4", "7", "8", "5" ]
A
"explanation : let the number be x . then , ( x - 5 ) / 7 = 7 = > x - 5 = 49 x = 54 . : ( x - 2 ) / 13 = ( 54 - 2 ) / 13 = 4 answer : option a"
medmcqa
medmcqa_05_03748
Precursor of norepinephrine
[ "Tryptophan", "Tyrosine", "Methionine", "Asparagine" ]
B
Catecholamines are derived from tyrosine.They are so named because of the presence of catechol nucleus.They include epinephrine, norepinephrine and dopamine.They are produced by the adrenal medulla and sympathetic ganglia. Tyrosine is first hydroxylated to DOPA by tyrosine hydroxylase. Dopamine is fuher hydroxylated to...
medmcqa
medmcqa_05_02754
A patient suffering from morning stiffness >1 hour, presents with the following abnormality in the X-ray. What can be the most possible diagnosis:
[ "Psoriatic arthritis", "Rheumatoid arthritis", "Osteoarthritis", "Relapsing polychondritis" ]
B
Ans. B Rheumatoid arthritisClassic Swan neck deformityQ (DIP joint flexion and PIP joint extension) with marked changes at the radiocarpal joint.
openbookqa
obqa_02_00722
What shows that as the amount of food an animal eats decreases , that organism will become thinner?
[ "outline of ribs is clearly visible on starving mammals", "thin organisms are usually invertebrates", "all thin animals lack proper nutrition", "animals that have little food are dying" ]
A
as the amount of food an animal eats decreases , that organism will become thinner
medmcqa
medmcqa_05_04305
Mutation in Marfan’s syndrome is?
[ "Collagen I", "Fibrillin I", "Collagen II", "Fibrillin II" ]
B
Mutations in the fibrillin-1 gene cause Marfan’s syndrome Mutations in the fibrillin-2 gene have been linked to Beal's Syndrome,
openbookqa
obqa_02_02193
What would be a benefit of skipping showers?
[ "getting facial acne", "being smelly", "having dirty hair", "fostering healthy bacteria" ]
D
good bacteria grow on a human 's skin
sciq
sciq_01_09517
Most lipids in your diet should be what type, found mainly in plant sources and also in fish?
[ "saturated", "aromatic", "unsaturated", "fat" ]
C
Unsaturated fats are found mainly in plant foods, such as vegetable oil, olive oil, and nuts. Unsaturated lipids are also found in fish, such as salmon. Unsaturated lipids are needed in small amounts for good health. Most lipids in your diet should be unsaturated.
sciq
sciq_01_11509
What goes through different larval stages?
[ "sponges", "octopuses", "plants", "crustaceans" ]
D
Figure 28.41 All crustaceans go through different larval stages. Shown are (a) the nauplius larval stage of a tadpole shrimp, (b) the cypris larval stage of a barnacle, and (c) the zoea larval stage of a green crab. (credit a: modification of work by USGS; credit b: modification of work by Mª. Mingorance Rodríguez; cre...
ARC-Challenge
arc_04_02281
Constructive forces build a new mountain range. How will weathering and erosion change the features of the mountain range over time?
[ "layering the rocks", "crystallizing the rocks", "folding the layers of the rocks", "rounding the shapes of the rocks" ]
D
null
sciq
sciq_01_07233
What branch of science holds hope for developing crops with genes that help them withstand harsh conditions?
[ "physics", "biotechnology", "chemistry", "physiology" ]
B
Biotechnology will allow the development of crops containing genes that will help them to withstand harsh conditions. For example, drought and salty soil are two significant factors affecting how well crops grow. But there are crops that can withstand these harsh conditions. Why? Probably because of that plant's geneti...
ARC-Easy
arc_04_01098
Why should scientists wear goggles during experiments?
[ "to block out bright sunlight", "to magnify small objects", "to protect their eyes", "to see in the dark" ]
C
null
openbookqa
obqa_02_01101
Which object is likely to be a thermal conductor?
[ "curtain", "wall", "table", "mirror" ]
D
metal is a thermal conductor
sciq
sciq_01_00994
Physical and chemical properties of geometric isomers are generally what?
[ "round", "different", "difficult", "similar" ]
B
Physical and chemical properties of geometric isomers are generally different. While cis -2-butene is a polar molecule, trans -2-butene is nonpolar. Heat or irradiation with light can be used to bring about the conversion of one geometric isomer to another. The input of energy must be large enough to break the pi bond ...
medmcqa
medmcqa_05_04433
A chemistry student was brought to the emergency depament after accidental spilling of caustic soda in her eyes. Alkali injury causing global penetration can result in:
[ "Symblepharon", "Optic neuritis", "Retinal detachment", "Cataract" ]
A
Symblepharon: This is a condition where adhesion of the lid to the globe takes place. Any cause which produces raw surfaces on two opposed areas of the palpebral and bulbar conjunctiva will lead to adhesion if the areas are allowed to remain in contact during the process of healing, and thus allows cicatrization and fi...
sciq
sciq_01_06294
Sounds, chemicals, and visual cues are examples of what between animals?
[ "procreation", "migration", "communication", "circulation" ]
C
For individuals to cooperate, they need to communicate . Animals can communicate with sounds, chemicals, or visual cues. For example, to communicate with sounds, birds sing and frogs croak. Both may be communicating that they are good mates. Ants communicate with chemicals called pheromones . For example, they use the ...
openbookqa
obqa_02_04737
A lion with bones protruding from underneath its fur has been
[ "in a wardrobe", "overfed", "animated", "underfed" ]
D
as the amount of food an animal eats decreases , that organism will become thinner
sciq
sciq_01_09710
What is the order and family of a meat-eating cat like a tiger?
[ "Mammalia felidae", "hierarchies felidae", "Synapsida felidae", "carnivora felidae" ]
D
Most chordates are animals with backbones. These range from small fish to giant whales, from playful dogs to ferocious cats. Not nearly as diverse as the invertebrates. But chordates do have many amazing species. The white tiger ( Panthera tigris ) is a chordate. The tiger is also from the class Mammalia, order Carnivo...
openbookqa
obqa_02_04458
The dust bowl happened because of
[ "two football teams", "bowling pins", "sweeping reform", "unsustainable farming practice" ]
D
humans changing an environment sometimes causes that environment to be destroyed
sciq
sciq_01_10310
How do planets usually rotate to their orbital planes?
[ "randomly", "nearly perpendicular", "chaotic", "exactly perpendicular" ]
B
The axes of rotation of the planets are mostly nearly perpendicular to the orbital plane.
sciq
sciq_01_01061
Because they spread seeds, fruits are an agent of what?
[ "propagation", "dispersal", "disposal", "predation" ]
B
Fruit The seed forms in an ovary, which enlarges as the seeds grow. As the seed develops, the walls of the ovary also thicken and form the fruit. In botany, a fruit is a fertilized and fully grown, ripened ovary. Many foods commonly called vegetables are actually fruit. Eggplants, zucchini, string beans, and bell peppe...
ARC-Easy
arc_04_00295
The gravitational attraction of the Moon causes which effect on Earth?
[ "ocean tides", "time of day", "energy from the Sun", "phases of the Moon" ]
A
null
sciq
sciq_01_10315
Helium-3 is produced by beta decay of a certain what?
[ "nuclide", "electron", "quark", "particle" ]
A
helium-3 is produced by beta decay of a certain nuclide.
math_qa
mathqa_03_00886
75 men working 8 hours per day dig 50 m deep . how many extra men should be put to dig to a depth of 70 m working 6 hours per day ?
[ "75", "45", "55", "65" ]
D
( 75 * 8 ) / 50 = ( x * 6 ) / 70 = > x = 140 140 â € “ 65 = 65 answer : d
medmcqa
medmcqa_05_00894
Which is an example of disability limitation
[ "Resting the affected limb in neutral position", "Arranging for schooling of a child suffering from PPRP", "Reducing occurrence by polio immunisation", "Providing calipers for walking" ]
A
Disability: Any restriction or lack of ability to perform an activity in the manner or within the range considered normal for human being. Disability Limitation: It is mode of intervention when patient repos late in the pathogenesis phase. The objective of this intervention is to prevent or halt the transition at' the ...
openbookqa
obqa_02_04040
What uses eyes to see by sensing light?
[ "trees", "algae", "worms", "elephants" ]
D
eyes are used for seeing by animals by sensing light
sciq
sciq_01_03759
Mineral crystals that form when magma cools are usually _______ than crystals that form when lava cools.
[ "older", "denser", "smaller", "larger" ]
D
Mineral crystals that form when magma cools are usually larger than crystals that form when lava cools.
sciq
sciq_01_09324
What monitors the level of carbon dioxide in the blood?
[ "the lungs", "the kidneys", "the brain stem", "the heart" ]
C
The regular, rhythmic contractions of the diaphragm are controlled by the brain stem. It sends nerve impulses to the diaphragm through the autonomic nervous system. The brain stem monitors the level of carbon dioxide in the blood. If the level becomes too high, it “tells” the diaphragm to contract more often. Breathing...
math_qa
mathqa_03_04794
the cost of one photocopy is $ 0.02 . however , a 25 % discount is offered on orders of more than 100 photocopies . if steve and dennison have to make 80 copies each , how much will each of them save if they submit a single order of 160 copies ?
[ "$ 0.32", "$ 0.40", "$ 0.45", "$ 0.48" ]
B
"if steve and dennison submit separate orders , each would be smaller than 100 photocopies , so no discount . each would pay ( 80 ) * ( $ 0.02 ) = $ 1.60 , or together , a cost of $ 3.20 - - - that ' s the combined no discount cost . if they submit things together as one big order , they get a discount off of that $ 3....
medmcqa
medmcqa_05_03056
An IQ between 50 & 70 would be classified as what kind mental retardation -
[ "Mild", "Moderate", "Severe", "Borderline" ]
A
Ans. is 'a' i.e., Mild
math_qa
mathqa_03_02370
the area of a rectangular field is equal to 300 square meters . its perimeter is equal to 70 meters . find the length and width of this rectangle .
[ "w = 15 and l = 20'", "w = 25 and l = 30'", "w = 35 and l = 40'", "w = 45 and l = 50'" ]
A
l * w = 300 : area , l is the length and w is the width . 2 l + 2 w = 70 : perimeter l = 35 - w : solve for l ( 35 - w ) * w = 300 : substitute in the area equation w = 15 and l = 20 : solve for w and find l using l = 35 - w . correct answer a
sciq
sciq_01_09290
Activated macrophages and neutrophils discharge what that signals molecules that enhance an immune response?
[ "pathogens", "cytokines", "nucelotides", "alkaloids" ]
B
sciq
sciq_01_08574
Among vertebrates, what broad category of animals is most capable of learning?
[ "reptiles", "fish", "mammals", "birds" ]
C
Mammals are very intelligent. Of all vertebrates, they are the animals that are most capable of learning. Mammalian offspring are fed and taken care of by their parents for a relatively long time. This gives them plenty of time to learn from their parents. By learning, they can benefit from the experiences of their eld...
math_qa
mathqa_03_00736
a bakery has 6 employees . it pays annual salaries of $ 16,000 to each of 2 employees , $ 18,000 to 1 employee , and $ 19,000 to each of the remaining 3 employees . which number is closest to the average ( arithmetic mean ) annual salary of these employees ?
[ "$ 17,200", "$ 17,500", "$ 17,800", "$ 18,000" ]
C
"average = 2 ( 16000 ) + ( 18000 ) + 3 ( 19000 ) / 6 = $ 17,833 the answer is c ."
sciq
sciq_01_01804
What are materials that are poor thermal conductors called?
[ "sunlight insulators", "warmth insulators", "pollution insulators", "thermal insulators" ]
D
Particles of gases are farther apart and have fewer collisions, so they are not good at transferring thermal energy. Materials that are poor thermal conductors are called thermal insulators . Figure below shows several examples. Fluffy yellow insulation inside the roof of a home is full of air. The air prevents the tra...
sciq
sciq_01_11286
Fertilization occurs when an egg and sperm come together to form a what?
[ "infant", "zygote", "cell", "eukaryote" ]
B
Fertilization occurs when an egg and sperm come together to form a zygote.
sciq
sciq_01_03974
The rocks that are taken from a mine are full of valuable minerals plus rock that isn't valuable. what is this rock called?
[ "compost rock", "waste rock", "empty rock", "garbage rock" ]
B
Most minerals are a combination of metal and other elements. The rocks that are taken from a mine are full of valuable minerals plus rock that isn't valuable. This is called waste rock. The valuable minerals must be separated from the waste rock. One way to do this is with a chemical reaction. Chemicals are added to th...
medmcqa
medmcqa_05_03188
Not product of transcription:
[ "tRNA", "mRNA", "rRNA", "cDNA" ]
D
D i.e. C-DNA; E i.e. New strand of DNA
math_qa
mathqa_03_04976
in a box of 12 pens , a total of 4 are defective . if a customer buys 3 pens selected at random from the box , what is the probability that neither pen will be defective ?
[ "1 / 6", "2 / 55", "14 / 55", "12 / 55" ]
C
"method - 1 there are 9 fine pieces of pen and 4 defective in a lot of 12 pens i . e . probability of first pen not being defective = ( 8 / 12 ) i . e . probability of second pen not being defective = ( 7 / 11 ) i . e . probability of third pen not being defective = ( 6 / 10 ) probability of both pen being non - defect...
sciq
sciq_01_04608
The punnett square shows the possible what, and their most likely ratios?
[ "receptors", "phenotypes", "chromosomes", "genotypes" ]
D
If the parents had four offspring, their most likely genotypes would be one BB, two Bb, and one bb. But the genotype ratios of their actual offspring may differ. That's because which gametes happen to unite is a matter of chance, like a coin toss. The Punnett square just shows the possible genotypes and their most like...
math_qa
mathqa_03_02874
in a fuel station the service costs $ 1.75 per car , every liter of fuel costs 0.65 $ . assuming that a company owns 14 cars and that every fuel tank contains 55 liters and they are all empty , how much money total will it cost to fuel all cars ?
[ "320 $", "380 $", "525 $", "456 $" ]
C
"total cost = ( 1.75 * 14 ) + ( 0.65 * 14 * 55 ) = 24.5 + 500.5 = > 525 hence answer will be ( c ) 525"
medmcqa
medmcqa_05_04725
Most common intracranial tumor encroaching the orbit is?
[ "Astrocytoma", "Glioblastoma multiforme", "Sphenoid wing meningioma", "Medulloblastoma" ]
C
ANSWER: (C) Sphenoid wing meningiomaREF: Computed tomography of the eye and orbit by Steven B. Hammerschlag, John R. Hesselink, Alfred L. Weber Page 120Meningioma is by far the most common intracranial tumor to involve the orbit. Sphenoid wing meningiomas characteristically produce exuberant hyperostosis on both the or...
medmcqa
medmcqa_05_00591
Reinke's crystals are seen in?
[ "Leydig cells", "Sertoli cells", "Curschmann spirals", "Creola bodies" ]
A
Ans. (a) Leydig cellsRef: Bailey & Love 26th ed. /1341Rectangular, crystal-like inclusions, composed of protein, with pointed or rounded ends in the interstitial cells of the testis (Leydig cells) and hilus cells in the ovary. Inside the Leydig cells of human males can be found Reinkes crystals. The purpose of these cr...
math_qa
mathqa_03_04462
5800 * 99
[ "574580", "574200", "584250", "576460" ]
B
"explanation : 5800 * ( 100 - 1 ) = 580000 - 5800 = 574200 option b"
math_qa
mathqa_03_02720
how many multiples of 5 are there between 5 to 95 ?
[ "9", "18", "17", "16" ]
C
"as you know , multiples of 5 are integers having 0 or 5 in the digit to the extreme right ( i . e . the unit ’ s place ) . so the numbers are 10 , 15 , 20 , 25 , 30 , 35 , 40 , 45 , 50 , 55 , 60 , 65 , 70 , 75 , 80 , 85 , 90 . answer c"
ARC-Challenge
arc_04_02307
In an investigation, which of these procedures is most important in reaching a conclusion?
[ "classifying and sequencing methods", "evaluating and interpreting data", "developing multiple hypotheses", "predicting the most likely outcome" ]
B
null
sciq
sciq_01_06719
Exchange occurs directly with the external environment in what type of organisms?
[ "unicellular organisms", "hematopoietic organisms", "multicellular organisms", "cell clusters" ]
A
ARC-Easy
arc_04_01087
Which two observations are both used to describe weather?
[ "precipitation and runoff", "temperature and sky conditions", "wind speed and erosion", "types of clouds and deposition" ]
B
null
medmcqa
medmcqa_05_02050
Commonly used long bone for identification ?
[ "Femur", "Radius", "Ulna", "Humerus" ]
A
Ans. is 'a' i.e., Femur Stature can be calculated from the length of long bones and used for identification. Femur and tibia give more accurate values compared to humerus and radius Stature is determined in dismembered body (skeletal remains) by : Length from the tip of middle finger to the tip of opposite middle finge...
sciq
sciq_01_01616
What work together in pairs to bend or straighten a joint?
[ "cartilage tissues", "nerve fibers", "collagen bands", "muscles" ]
D
Muscles work together in pairs to bend or straighten the joint.
math_qa
mathqa_03_02227
if both 5 ^ 3 and 3 ^ 4 are factors of n x ( 2 ^ 5 ) x ( 12 ^ 2 ) x ( 7 ^ 3 ) x ( 10 ^ 2 ) , what is the smallest possible positive value of n ?
[ "15", "45", "75", "125" ]
B
"( 2 ^ 5 ) x ( 12 ^ 2 ) x ( 7 ^ 3 ) x ( 10 ) has two appearances of 3 ( in 12 ^ 2 ) and two appearances of 5 ( in 10 ^ 2 ) . thus n must include at least 3 ^ 2 * 5 = 45 the answer is b ."
sciq
sciq_01_10620
Electric generators convert what type of energy to electric energy?
[ "mechanical energy", "thermodynamic energy", "fluid energy", "electromagnetic energy" ]
A
Electric generators convert mechanical energy to electric energy. The generator consists of some number of wire loops wrapped around an iron core and placed in a strong magnetic field. The loops of wire and the iron core are called the armature . The armature is mounted so that it can rotate freely inside the magnetic ...
sciq
sciq_01_06870
What is the angiosperm seed surrounded by?
[ "ovary", "egg", "cone", "uterus" ]
A
The two major divisions of seed plants are the gymnosperms (seeds in cones) and angiosperms (seeds in ovaries of flowers). Figure below shows how the seeds of gymnosperms and angiosperms differ. Do you see the main difference between the two seeds? The angiosperm seed is surrounded by an ovary.
sciq
sciq_01_07856
What is the loss of energy available to do work called?
[ "negentropy", "force", "entropy", "power" ]
C
15.6 Entropy and the Second Law of Thermodynamics: Disorder and the Unavailability of Energy • Entropy is the loss of energy available to do work. • Another form of the second law of thermodynamics states that the total entropy of a system either increases or remains constant; it never decreases. • Entropy is zero in a...
medmcqa
medmcqa_05_03103
Multifactorial inheritance is most likely to play a role in
[ "Cleft lip", "Marfan's syndrome", "Down's syndrome", "Erythroblastosis fetalis" ]
A
Cleft lip and cleft palate, also known as orofacial cleft, is a group of conditions that includes cleft lip (CL), cleft palate (CP), and both together (CLP).] A cleft lip contains an opening in the upper lip that may extend into the nose. The opening may be on one side, both sides, or in the middle. A cleft palate is w...
sciq
sciq_01_10400
What is a controlled scientific test that often takes place in a lab?
[ "a testing", "an observeration", "a viewing", "an experiment" ]
D
An experiment is a controlled scientific test that often takes place in a lab. It investigates the effects of an independent variable on a dependent variable.