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7.76k
sciq
sciq_01_05240
In what human organ system would you find live e. coli bacteria?
[ "respiratory system", "skeletal system", "digestive system", "circulatory system" ]
C
E. coli bacteria are anaerobic bacteria that live in the human digestive tract.
sciq
sciq_01_09466
What elements do water and hydrogen peroxide consist of?
[ "calcium and oxygen", "carbon and oxygen", "hydrogen and helium", "hydrogen and oxygen" ]
D
Look at the Figure below of water (H 2 O) and hydrogen peroxide (H 2 O 2 ), and read about these two compounds. Both compounds consist of hydrogen and oxygen, but they have different ratios of the two elements. As a result, water and hydrogen peroxide are different compounds with different properties. If you’ve ever us...
openbookqa
obqa_02_02513
The most popular plant in Italy is
[ "Air", "Basil", "Apple Juice", "Metal" ]
B
plants are the source of spices
openbookqa
obqa_02_02334
Over the course of a calendar month, the moon may
[ "resolve", "burn", "float", "spin" ]
D
a revolution of the moon around the Earth takes 1 month
medmcqa
medmcqa_05_03974
A patient of scleroderma who has hypeension is at significant risk of developing
[ "MI", "Sudden renal failure", "Thrombotic stroke", "Pulmonary hypeension" ]
B
.
math_qa
mathqa_03_02928
carl can wash all the windows of his house in 8 hours . his wife maggie can wash all the windows in 4 hours . how many hours will it take for both of them working together to wash all the windows ?
[ "2", "2 1 / 4", "3 2 / 2", "4 1 / 2" ]
C
"work hrs = ab / ( a + b ) = 32 / 12 = 3 2 / 2 answer is c"
sciq
sciq_01_11566
What occurs when hot magma transforms rock that it contacts?
[ "contact metamorphism", "form metamorphism", "existence metamorphism", "changing metamorphism" ]
A
Contact metamorphism occurs when hot magma transforms rock that it contacts.
sciq
sciq_01_05415
Lacking blood vessels, nerve endings, or glands, the epidermis is the outer layer of what?
[ "liver", "skin", "lungs", "brain" ]
B
The epidermis is the outer layer of skin. It consists almost entirely of epithelial cells. There are no blood vessels, nerve endings, or glands in this skin layer. Nonetheless, this layer of skin is very active. It is constantly being renewed. How does this happen?.
sciq
sciq_01_02255
What type of winds blow only over a limited area?
[ "local", "trade", "Planetary", "periodic" ]
A
Local winds are winds that blow over a limited area. They are influenced by local geography. Nearness to an ocean, lake or mountain range can affect local winds. Some examples are found below.
math_qa
mathqa_03_03330
a person borrows 5000 for 2 years at 4 % p . a . simple interest . he immediately lends it to another person at 61 ⁄ 4 % p . a . for 2 years . find his gain in the transaction per year .
[ "112.50", "125", "150", "167.5" ]
A
"gain in 2 years = [ ( 5000 × 25 / 4 × 2 / 100 ) − ( 5000 × 4 × 2 / 100 ) ] = ( 625 – 400 ) = 225 . ∴ gain in 1 year = ( 225 ⁄ 2 ) = 112.50 answer a"
medmcqa
medmcqa_05_00970
Best prognosis among RCC is
[ "Clear cell", "Papillary", "Chromophobe", "Collecting duct" ]
C
Chromophobe has best prognosis Collecting duct has the worst prognosis.
math_qa
mathqa_03_02106
how many trucks are there if each truck carrying 70 packages and total of 490 packages ?
[ "a", "b", "c", "d" ]
A
sol . total packages 490 each truck carries 70 packages = 490 / 70 = 7 answer : a
ARC-Easy
arc_04_00957
When liquid water freezes, it forms ice. What is the physical state of an ice cube?
[ "gas", "solid", "liquid", "plasma" ]
B
null
sciq
sciq_01_04898
A mammal that reproduces by laying eggs is called what?
[ "cactaceae", "mammal", "maidenhair", "monotreme" ]
D
Platypus. The platypus is a monotreme, a mammal that reproduces by laying eggs.
medmcqa
medmcqa_05_04046
The pharyngeal muscle which forms a part of buccinator mechanism is:
[ "Inferior constrictor", "Middle constrictor", "Superior constrictor", "Palatopharyngeus" ]
C
The diagram depicts the muscle involvement in buccinator mechanism:
medmcqa
medmcqa_05_04476
Brinzolamide is a?
[ "Highly specific, competitive and reversible inhibitor", "Noncompetive irreversible inhibitor", "Noncompetitive reversible inhibitor", "Competive irreversible inhibitor" ]
C
Ans. is 'c' i.e., Noncompetitive reversible inhibitor Brinzolamide is a white powder formulated as l% ophthalmic suspension to reduce intraocular pressure.Pharmacologically Brinzolamide is a highly specific noncompetitive reversible and effective inhibitor of carbonic anhydrase II (CA-II) which is able to suppress form...
ARC-Easy
arc_04_00735
A researcher found shark fossils on top of a mountain. This evidence suggests which of the following about this region?
[ "It was once below a waterfall.", "It was once part of a riverbed.", "It was once covered by an ocean.", "It was once near a freshwater lake." ]
C
null
medmcqa
medmcqa_05_01723
Which of the following DOES NOT contribute to the ring of thymine ?
[ "Aspaate", "Glutamine", "THF", "Bicarbonate" ]
C
The question asked specifically about the ring and not side groups present on ring. In Thymine (Pyrimidine) ring, sources of N & C are: N3 from Glutamine C2 from CO2 (or Bicarbonate) N1, C4, C5, C6 from Aspaate -CH3 is not pa of the ring but a side group which is contributed by THF, Hence it is the answer.
sciq
sciq_01_01854
A ramp is an example of what?
[ "move plane", "level plane", "inclined plane", "change plane" ]
C
A ramp like the one in the Figure below is another example of an inclined plane. Inclined planes make it easier to move objects to a higher elevation. The sloping surface of the inclined plane supports part of the weight of the object as it moves up the slope. As a result, it takes less force to move the object uphill....
math_qa
mathqa_03_03039
a certain manufacturer of cake , muffin , and bread mixes has 100 buyers , of whom 50 purchases cake mix , 40 purchase muffin mix , and 17 purchase both cake mix and muffin mix . if a buyer is to be selected at random from the 100 buyers , what is the probability that the buyer selected will be one who purchases neithe...
[ "1 / 10", "3 / 10", "1 / 2", "27 / 100" ]
D
c + m + b - cm - mb - cb - 2 cmb = 100 c - cake buyers , m - muffin and b - bread buyers . cm , mb , cb and cmb are intersecting regions . the question asks for people who have bought only bread mixes = b - cb - mb - 2 cmb has to be found out . 50 + 40 + b - cb - mb - 17 - 2 cmb = 100 b - cb - mb - 2 cmb = 27 hence the...
openbookqa
obqa_02_03925
The strength of a hurricane increases as moisture and what increase?
[ "hotness", "animals", "water", "anger" ]
A
as heat and moisture increases , the strength of a hurricane will increase
math_qa
mathqa_03_04778
a retailer bought a machine at a wholesale price of $ 90 and later on sold it after a 10 % discount of the retail price . if the retailer made a profit equivalent to 20 % of the whole price , what is the retail price w of the machine ?
[ "81", "100", "120", "135" ]
C
"since the wholesale price was $ 90 and the profit was 20 % of the wholesale price ( [ . 2 ] [ 90 ] = $ 18 ) , the retail price would have to be above $ 108 , but not that much greater than that . let ' s start by testing answer c : $ 120 . . . . if . . . . . retail price w = $ 120 10 % discount off = $ 120 - ( . 1 ) (...
sciq
sciq_01_09449
Mechanisms for establishing cellular asymmetries include morphogen gradients, localized determinants, and what other type of interactions?
[ "conductive", "inductive", "electromagnetic", "reductive" ]
B
math_qa
mathqa_03_02705
a , b and c rent a pasture . if a puts 10 oxen for 7 months , b puts 12 oxen for 5 months and c puts 15 oxen for 3 months for grazing and the rent of the pasture is rs . 210 , then how much amount should c pay as his share of rent ?
[ "54", "45", "25", "15" ]
A
"a : b : c = 10 × 7 : 12 × 5 : 15 × 3 = 2 × 7 : 12 × 1 : 3 × 3 = 14 : 12 : 9 amount that c should pay = 210 × 9 / 35 = 6 × 9 = 54 answer is a"
openbookqa
obqa_02_02925
Characteristics that are inherited are unnaturally changeable. Which one of these is inherited?
[ "how much you drink", "How much you eat", "How short you are", "how much you weigh" ]
C
height is an inherited characteristic
sciq
sciq_01_08601
What is the name of the project concerning genetics that is one of the landmark scientific events of the last 50 years?
[ "human genome project", "blue beam project", "manhattan project", "human organism project" ]
A
Beginning with Mendel's pea plants, genetics has become one of the most important fields of biology. Genetics discusses genetics, from Mendel's pea plants to current ethical issues associated with this field. The completion of The Human Genome Project is one of the landmark scientific events of the last 50 years. Human...
math_qa
mathqa_03_02180
real - estate salesman z is selling a house at a 30 percent discount from its retail price . real - estate salesman x vows to match this price , and then offers an additional 15 percent discount . real - estate salesman y decides to average the prices of salesmen z and x , then offer an additional 40 percent discount ....
[ "39 / 6", "62 / 11", "11 / 61", "21 / 61" ]
A
let the retail price be = x selling price of z = 0.7 x selling price of x = 0.85 * 0.7 x = 0.60 x selling price of y = ( ( 0.7 x + 0.6 x ) / 2 ) * 0.60 = 0.65 x * 0.60 = 0.39 x 0.39 x = k * 0.60 x k = 0.39 / 0.6 = 39 / 6 answer : a
ARC-Challenge
arc_04_02726
Scientists launch a rocket into space for a mission. Once the rocket escapes the gravitational pull of Earth, how will the mass and weight of the rocket be affected?
[ "The mass and weight will change.", "The mass and weight will stay the same.", "The mass will stay the same, but the weight will change.", "The mass will change, but the weight will stay the same." ]
C
null
openbookqa
obqa_02_04856
Which likely needs the least food?
[ "a cat", "a snake", "a shark", "a dog" ]
B
a desert environment contains very little food
ARC-Easy
arc_04_01220
In New York State, the shortest period of daylight occurs during which month?
[ "December", "June", "March", "September" ]
A
null
sciq
sciq_01_07867
What disease, caused by vitamin c deficiency, causes bleeding gums, nosebleeds, and other symptoms?
[ "scurvy", "dehydration", "leukemia", "rickets" ]
A
Not getting enough vitamins can cause health problems. For example, too little vitamin C causes a disease called scurvy. People with scurvy have bleeding gums, nosebleeds, and other symptoms.
math_qa
mathqa_03_01981
if x is a positive number and 1 / 2 the square root of x is the cube root of x , then x =
[ "64", "32", "16", "4" ]
A
1 / 2 the square root of x is cube root of x . if x = 64 . . then 1 / 2 the square root of x = 4 and cube of x is 64 . option a .
math_qa
mathqa_03_02339
the cost per pound of green tea and coffee were the same in june . in july , the price of coffee shot up by 100 % and that of green tea dropped by 70 % . if in july , a mixture containing equal quantities of green tea and coffee costs $ 3.45 for 3 lbs , how much did a pound of green tea cost in july ?
[ "$ 4", "$ 0.3", "$ 1", "$ 3" ]
B
lets assume price of coffee in june = 100 x price of green tea in june = 100 x price of coffee in july = 200 x ( because of 100 % increase in price ) price of green tea in july = 30 x ( because of 70 % decrease in price ) price of 1.5 pound of coffee 1.5 pound of green tea in july will be = 300 x + 45 x = 345 x as per ...
medmcqa
medmcqa_05_01863
ANCA negative vasculitis among the following is
[ "Wegener's granulomatosis", "Churg - Strauss syndrome", "Polyaeritis nodosa", "Microscopic polyangiitis" ]
C
c- ANCA predominant vasculitis p- ANCA predominant vasculitis 1. Wegener`s granulomatosis Microscopic polyangiitis Churg-Strauss syndrome Crescentic glomerulonephritis
sciq
sciq_01_02718
What does a pollinator pick from its body and carry directly to another plant of the same species?
[ "pollen", "pathogen", "spore", "egg" ]
A
Wind-blown pollen might land anywhere and be wasted. Another adaptation solved this problem. Plants evolved traits that attract specific animal pollinators . Like the bee in Figure below , a pollinator picks up pollen on its body and carries it directly to another plant of the same species. This greatly increases the c...
sciq
sciq_01_10839
Most tunicates live a sessile existence in shallow ocean waters and are suspension feeders. the primary foods of tunicates are plankton and this?
[ "crustaceans", "debris", "bacteria", "detritus" ]
D
Most tunicates live a sessile existence in shallow ocean waters and are suspension feeders. The primary foods of tunicates are plankton and detritus. Seawater enters the tunicate’s body through its incurrent siphon. Suspended material is filtered out of this water by a mucus net (pharyngeal slits) and is passed into th...
medmcqa
medmcqa_05_03994
A Health Guide works at –
[ "Each village level", "Sub-centre level", "PHC level", "Community level" ]
A
Village health guides A village health guide is a person with an aptitude for social service and is not a full time government functionary. The health guides are now mostly women. The health guides come from and are chosen by the community. They serve as links between the community and the government infrastructure an...
ARC-Easy
arc_04_01620
Which sentence describes a characteristic of offspring produced by sexual reproduction?
[ "The offspring have half the amount of genetic material as the parents.", "The offspring contain genetic material from both parents.", "The female offspring contain only genes from the mother.", "The male offspring contain only genes from the father." ]
B
null
openbookqa
obqa_02_04012
Unlike bird eggs, reptile's eggs are
[ "symmetrical", "Neon green", "magical", "watermelons" ]
A
reptiles lay eggs
sciq
sciq_01_02410
Where is food stored?
[ "The gall bladder", "The esophagus", "The liver", "the stomach" ]
D
math_qa
mathqa_03_04636
a can do a work in 21 days and b alone can do it 28 days , they begin the work together , but a left after some days . b completed the remaining work in 21 days . after how many days did a leave ?
[ "10", "8", "3", "15" ]
C
explanation : ( a + b ) 1 day work = { 1 / 21 + 1 / 28 } = 1 / 12 = 12 days is required for a & b b ’ s 1 day work = 1 / 28 b ’ s 21 days work = 21 / 28 1 - 21 / 28 = 7 / 28 - 1 / 4 1 / 4 * 12 = 3 days answer : option c
sciq
sciq_01_07670
The structure of the human tail bone is called what?
[ "a abnormal structure", "a vestigial structure", "an artifact", "a vital structure" ]
B
The majority of human genes have two or more possible alleles , which are alternative forms of a gene. Differences in alleles account for the considerable genetic variation among people. In fact, most human genetic variation is the result of differences in individual DNA bases within alleles.
ARC-Easy
arc_04_00170
The change in fur color of the Arctic hare from brown in the summer to white in the winter is an example of
[ "mimicry.", "heredity.", "diversity.", "camouflage." ]
D
null
medmcqa
medmcqa_05_02921
In pregnancy, calculation of EDD (expected date of delivery) considers: March 2013
[ "First day of last menstruation", "Last day of last menstruation period", "Mid time of last menstrual period", "Day of coitus" ]
A
Ans. A i.e. First day of last menstruation
openbookqa
obqa_02_03443
If the earth quakes and a lot of people die, likely
[ "everything was fine", "stars went out", "sunrise was delayed", "shingles caved in" ]
D
buildings collapsing often cause death
math_qa
mathqa_03_01640
a farmer has an apple orchard consisting of fuji and gala apple trees . due to high winds this year 10 % of his trees cross pollinated . the number of his trees that are pure fuji plus the cross - pollinated ones totals 170 , while 3 / 4 of all his trees are pure fuji . how many of his trees are pure gala ?
[ "30", "33", "55", "77" ]
A
"let f = pure fuji , g = pure gala and c - cross pollinated . c = 10 % of x where x is total trees . c = . 1 x also 3 x / 4 = f and c + f = 170 = > . 1 x + 3 / 4 x = 170 = > x = 200 200 - 170 = pure gala = 30 . answer a"
sciq
sciq_01_03344
Just as millions of different words are spelled with our 26-letter english alphabet, millions of different proteins are made with the 20 common what?
[ "mutation acids", "amino acids", "enzymes", "peptides" ]
B
Just as millions of different words are spelled with our 26-letter English alphabet, millions of different proteins are made with the 20 common amino acids. However, just as the English alphabet can be used to write gibberish, amino acids can be put together in the wrong sequence to produce nonfunctional proteins. Alth...
sciq
sciq_01_11143
Chemical and solar cells are devices that change chemical or light energy to what?
[ "electrical energy", "temperature energy", "occurring energy", "cellular" ]
A
Chemical and solar cells are devices that change chemical or light energy to electrical energy. You can read about both types of cells and how they work below.
math_qa
mathqa_03_02958
the speed of a boat in still water in 42 km / hr and the rate of current is 7 km / hr . the distance travelled downstream in 44 minutes is :
[ "86.6 km", "46.6 km", "35.9 km", "35.6 km" ]
C
"speed downstream = ( 42 + 7 ) = 49 kmph time = 44 minutes = 44 / 60 hour = 11 / 15 hour distance travelled = time × speed = 11 / 15 × 49 = 35.9 km answer : c"
medmcqa
medmcqa_05_03444
Seven closely related isolates of Candida albicans exhibited progressive decreases in susceptibility to posaconazole. Sequencing of the gene involved in azole resistance in these strains revealed predicted proteins with single amino acid changes. Which of the following best describes the type of mutation that has resul...
[ "Deletion", "Inversion", "Missense", "Nonsense" ]
B
The mutation described here is a missense mutation (c), or one in which base substitution resulting in a codon that causes a different amino acid to be inserted. Mutations result from three types of molecular changes, namely, base substitution mutation, frameshift mutation, and transposon or insertion sequences causing...
sciq
sciq_01_09379
What is the outermost part of the sun's atmosphere called?
[ "particles", "corona", "ultraviolet", "rays" ]
B
The corona ( Figure below ) is the outermost part of the Sun's atmosphere. It is the Sun’s halo, or “crown. ” With a temperature of 1 to 3 million K, the corona is much hotter than the photosphere. The corona extends millions of kilometers into space. Sometime you should try to see a total solar eclipse. If you do, you...
math_qa
mathqa_03_02548
if an article is sold at 18 % profit instead of 11 % profit , then the profit would be $ 63 more . what is the cost price ?
[ "$ 600", "$ 900", "$ 1200", "$ 1500" ]
B
"7 % * cost price = $ 63 1 % * cost price = $ 63 / 7 = $ 9 the cost price is $ 900 . the answer is b ."
sciq
sciq_01_05970
What flows like taffy or hot wax?
[ "gas", "molten rock", "sand dunes", "water" ]
B
Magma forms deep beneath the Earth’s surface. Rock melts below the surface under tremendous pressure and high temperatures. Molten rock flows like taffy or hot wax. Most magmas are formed at temperatures between 600 o C and 1300 o C ( Figure below ).
openbookqa
obqa_02_02097
What would be a source of the smoothest rocks?
[ "a riverbank", "the cliffs", "the desert", "the mountains" ]
A
contact between rocks over long periods of time causes rocks to smooth
ARC-Easy
arc_04_00548
The number of fish in a lake suddenly increases. How will the increase most likely affect the lake?
[ "There will be less water in the lake.", "More plants will grow in the lake.", "More frogs will live in the lake.", "There will be fewer insects in the lake." ]
D
null
sciq
sciq_01_00495
What is the term for the gas in smog that can damage plants?
[ "carbon", "dioxide", "sulphur", "ozone" ]
D
The ozone in smog may damage plants. The effects of ozone add up over time. Plants such as trees, which normally live a long time, are most affected. Entire forests may die out if ozone levels are very high. Other plants, including crop plants, may also be damaged by ozone. You can see evidence of ozone damage in Figur...
sciq
sciq_01_09721
What is the most abundant biochemical compound?
[ "tissue", "cellulose", "methane", "soil" ]
B
Cellulose is another complex carbohydrate found in plants that is a polymer of glucose. Cellulose molecules bundle together to form long, tough fibers. Cellulose is the most abundant biochemical compound. It makes up the cell walls of plants and gives support to stems and tree trunks.
ARC-Easy
arc_04_00183
The ratio of an object's mass to its volume is its
[ "area.", "perimeter.", "density.", "weight." ]
C
null
medmcqa
medmcqa_05_01290
Management of a 6-year-old child with recurrent URTI with mouth breathing and failure to thrive with high arched palate and impaired hearing is:
[ "Tonsillectomy", "Grommet insertion", "Myringotomy with grommet insertion", "Adenoidectomy with grommet insertion" ]
D
(d) Adenoidectomy with grommet insertion(Ref. Scott Brown, Vol 2; 288)Recurrent URTI with mouth breathing and failure to thrive in the given 6-year-old child with high arched palate is due to persistently hypertrophied adenoids.The impaired hearing is due to serous otitis media which in turn is because of hypertrophied...
sciq
sciq_01_05185
What kind of lakes form when volcanic eruptions create massive holes that fill with water?
[ "lava lakes", "eruption bowls", "crater lakes", "volcanic cavities" ]
C
Other lakes are crater lakes or rift lakes, which are pictured in Figure below . Crater lakes form when volcanic eruptions create craters that fill with water. Rift lakes form when movements of tectonic plates create low places that fill with water.
sciq
sciq_01_03597
Scientists often classify or organize different objects based on their what?
[ "behavioral traits", "physical properties", "experimental properties", "independent variables" ]
B
math_qa
mathqa_03_02837
what is the ratio between perimeters of two squares one having 2 times the diagonal then the other ?
[ "3 : 8", "3 : 6", "3 : 7", "2 : 1" ]
D
"d = 2 d d = d a √ 2 = 2 d a √ 2 = d a = 2 d / √ 2 a = d / √ 2 = > 2 : 1 answer : d"
sciq
sciq_01_10583
Solids and liquids are phases of matter that have their own unique what?
[ "masses", "temperatures", "volumes", "properties" ]
D
Solids and liquids are phases that have their own unique properties.
math_qa
mathqa_03_02330
there are 172 lights which are functional and each is controlled by a separate on / off switch . two children a and b start playing with the switches . a starts by pressing every third switch till he reaches the end . b , thereafter , presses every fifth switch till he too reaches the end . if all switches were in off ...
[ "83", "85", "87", "79" ]
D
"editing my solution : number of switches = 172 number of switches turned on by a : 3 , 6 , . . . 171 = 57 number of switches turned on by b : 5 , 10 , . . . . 170 = 34 few switches are turned on by a and later turned off by b : lcm ( 3,5 ) = 15 x = 15 , 30 , . . . . 90 = 6 . subtract the above 6 switches from both a a...
sciq
sciq_01_03286
Connected to agriculture, forestry, mining, and urbanization, what is the single biggest cause of extinction today?
[ "hunting", "global warming", "habitat loss", "freshwater loss" ]
C
The single biggest cause of extinction today is habitat loss . Agriculture, forestry, mining, and urbanization have disturbed or destroyed more than half of Earth’s land area. In the U. S. , for example, more than 99 percent of tall-grass prairies have been lost. Other causes of extinction today include:.
sciq
sciq_01_06508
When a species always migrates, what is this type of migration called?
[ "emigration", "mass migration", "genus migration", "obligate migration" ]
D
Although migration is thought of as innate behavior, only some migrating species always migrate (obligate migration). Animals that exhibit facultative migration can choose to migrate or not. Additionally, in some animals, only a portion of the population migrates, whereas the rest does not migrate (incomplete migration...
medmcqa
medmcqa_05_00621
Hydrops fetalis is associated with?
[ "Hepatitis B", "Parvovirus B 19", "Malaria", "Tuberculosis" ]
B
ANSWER: (B) Parvovirus B 19REF: Williams Obstetrics 22nd edition Table 29-8, Harrisons Internal Medicine 17th edition Chapter 177. Parvovirus InfectionsB19 infection during pregnancy can lead to hydrops fetalis and/or fetal loss. The risk of transplacental fetal infection is 30%, and the risk of fetal loss (predominant...
sciq
sciq_01_07918
What gas is released by burning of fossil fuels and contributes to global warming?
[ "carbon dioxide", "hydrogen", "helium", "nitrous oxide" ]
A
Using fossil fuels affects the environment in a variety of ways. There are impacts to the environment when we extract these resources. Burning these fuels causes air pollution. These fuels release carbon dioxide, which is a major factor in global warming ( Figure below ).
openbookqa
obqa_02_02198
Many of our traits are unable to be naturally changeable, so we are stuck with them they way they are unless we opt for surgery. One of those traits is
[ "language", "money", "color", "home" ]
C
the colors of the parts of an organism are inherited characteristics
math_qa
mathqa_03_02598
find the value of m 72519 x 9999 = m ?
[ "724533811", "353654655", "545463251", "725117481" ]
D
"72519 x 9999 = 72519 x ( 10000 - 1 ) = 72519 x 10000 - 72519 x 1 = 725190000 - 72519 = 725117481 d"
ARC-Challenge
arc_04_03181
An oceanic plate subducts under a continental plate. Which of these landforms most likely results from the interaction of these plates?
[ "volcanic mountains", "transform boundaries", "continental shelves", "normal faults" ]
A
null
ARC-Easy
arc_04_01135
Which of these are broken down during chemical, but not physical, changes?
[ "elements", "mixtures", "solutions", "compounds" ]
D
null
math_qa
mathqa_03_03738
find the smallest number in a gp whose sum is 38 and product 1728
[ "12", "20", "8", "all of these" ]
C
"in gp : - a / r + a + ar . . . . = 38 a ( 1 + r + r ^ 2 ) = 38 r . . . . . . eq 1 product a ^ 3 = 1728 a = 12 now put this value in eq 1 12 ( 1 + r + r ^ 2 ) = 38 r r = 2 / 3 and 3 / 2 . . so sallest number is 8 answer : c"
math_qa
mathqa_03_01602
johnny makes $ 7.35 per hour at his work . if he works 6 hours , how much money will he earn ?
[ "$ 30", "$ 54", "$ 48.32", "$ 44.10" ]
C
4.75 * 6 = 28.50 . answer is c .
math_qa
mathqa_03_04825
bag a contains red , white and blue marbles such that the red to white marble ratio is 1 : 3 and the white to blue marble ratio is 2 : 3 . bag b contains red and white marbles in the ratio of 1 : 4 . together , the two bags contain 20 white marbles . how many red marbles could be in bag a ?
[ "1", "3", "4", "6" ]
C
"6 is the answer . bag a - r : w : b = 2 : 6 : 9 let w in bag a be 6 k bab b - r : w = 1 : 4 let w in bag b be 4 k w = 20 = 6 k + 4 k k = 2 total red ' s in bag a will be 2 k = 4 c"
math_qa
mathqa_03_03870
for what values of k will the pair of equations 3 x + 4 y = 12 and ( kx + 12 y ) / 2 = 15 does not have a unique solution ?
[ "12", "9", "3", "7.5" ]
B
"we have 2 equations 1 . 3 x + 4 y = 12 - - > 9 x + 12 y = 36 2 . ( kx + 12 y ) / 2 = 15 - - > kx + 12 y = 30 substract 1 - 2 , we get ( 9 - k ) x = 6 i . e . x = 6 / ( 9 - k ) then , by looking at options , we get some value of x except for b . when we put k = 9 , x becomes 6 / 0 and hence answer is b"
openbookqa
obqa_02_00078
If John were going to the store, how would he measure his trip?
[ "kilometer", "centimeter", "decameter", "meter" ]
A
kilometers km are a unit used for measuring distance generally used for values between 1 and 50000000
openbookqa
obqa_02_00411
A good example of increased demand may equal increased production is
[ "soldiers eat beans, so beans are planted when there is war", "dogs eat kibble, so stores sell it", "cats eat mice, so mice are afraid of cats", "people have babies, so baby clothes are made" ]
A
as the use of a crop increases , the amount of crops planted will increase
math_qa
mathqa_03_01619
on multiplying a number f by 153 , the result obtained was 102325 . however , it is found that both the 2 ' s are wrong . find the correct result .
[ "104345", "107375", "108385", "109395" ]
D
the only thing you actually know about the correct number f is that it is divisible by 153 and has 5 as a factor . you should immediately try to find the factors of 153 and look for them in the options . 153 = 9 * 17 divisibility by 9 is easy to check . only ( d ) satisfies .
sciq
sciq_01_08104
What external feature in human beings is responsible for balance?
[ "hands", "tails", "ears", "brain" ]
C
The ears are also responsible for the sense of balance. Balance is the ability to sense and maintain body position. The semicircular canals inside the ear (see Figure above ) contain fluid that moves when the head changes position. Tiny hairs lining the semicircular canals sense movement of the fluid. In response, they...
medmcqa
medmcqa_05_00398
Which of the following is the most likely cause of pulpal necrosis following trauma to a tooth?
[ "Ankylosis", "Calcific metamorphosis", "Pulpal hyperemia", "Dilaceration" ]
C
The other three answers may occur as the result of trauma but do not cause loss of vitality. Pulpal hyperemia causes increased intrapulpal pressure and swelling, which may result in an interruption of the pulp’s blood supply. Without an adequate blood supply, the pulp becomes necrotic. This process can take time, and s...
medmcqa
medmcqa_05_02457
In which case cystometric study is indicated
[ "Neurogenic bladder", "Stress incontinence", "Fistula", "Urge incontinence" ]
A
Cystometric studies are urodynamic studies in which the pressure changes in the bladder is simultaneously measured with bladder filling and during micturition. It helps in accurate assessment of detrusor and sphincter activity especially if a neurogenic abnormality is suspected. Though it is also used in stress inconti...
ARC-Challenge
arc_04_02468
Carbon dioxide emissions have increased due to large numbers of automobiles and increased industrialization. Which of the following has been most affected by the increase in carbon dioxide levels?
[ "the ability of farmers to plant crops", "the ability of scientists to study other planets", "the ability of Earth to continue recycling rocks", "the ability of Earth to maintain lower temperatures" ]
D
null
sciq
sciq_01_01194
The lack of annihilation radiation coming to us from space proves that the universe is dominated by what?
[ "energy", "matter", "space", "vacuum" ]
B
Making Connections: Cosmology and Particle Physics There are many connections of cosmology—by definition involving physics on the largest scale—with particle physics—by definition physics on the smallest scale. Among these are the dominance of matter over antimatter, the nearly perfect uniformity of the cosmic microwav...
openbookqa
obqa_02_04922
If a liquid disappears then that liquid probably did what?
[ "gasify", "condense", "melted", "solidified" ]
A
if a liquid disappears then that liquid probably evaporated
sciq
sciq_01_07471
Like a thick cap covering the brain, the dura mater is a tough outer covering. the name comes from the latin for?
[ "back mother", "tough mother", "difficult mother", "protecting mother" ]
B
Dura Mater Like a thick cap covering the brain, the dura mater is a tough outer covering. The name comes from the Latin for “tough mother” to represent its physically protective role. It encloses the entire CNS and the major blood vessels that enter the cranium and vertebral cavity. It is directly attached to the inner...
ARC-Easy
arc_04_01350
A student is designing a model of the solar system and writing a report. She is trying to be as accurate as possible. Which statement should she include in her report?
[ "The distance between the Sun and Earth is measured in light years.", "Jupiter and Uranus are considered to be terrestrial planets.", "The asteroid belt is located between Jupiter and Saturn.", "The orbit of Mars is similar to the orbit of Saturn." ]
D
null
ARC-Easy
arc_04_00797
When sound waves with large amplitude are compared to sound waves with small amplitude, which of the following is true?
[ "Sound waves with large amplitudes have less energy and sound quieter.", "Sound waves with large amplitudes have more energy and sound louder.", "Sound waves with large amplitudes have the same energy and sound quieter.", "Sound waves with large amplitudes have the same energy and sound louder." ]
B
null
medmcqa
medmcqa_05_04548
Type I hypersensitivity, the mediator is:
[ "IgE", "IgE", "IgM", "IgC" ]
A
[A) (IgE) (161-AN 7th) (202-206-CP)Type of reactionClinical syndromeMediatorsType I - IgE1. Anaphylaxis2. Atopy P.K. reactionIgE, histamine and other pharmacological agents
medmcqa
medmcqa_05_01164
Minimum nitrogen required for an adult with dynamic tissue turnover to maintain a positive nitrogen balance is
[ "3.5-4.5 g", "5.5-6.5 g", "7.5-8.5 g", "9.5-10.5 g" ]
B
.minimum nitrogen required for an adult with dynamic tissue turnover to maintain a positive nitrogen balance is about 5.5 to 6.5 g.* Glucose requirement is 200 g per day; fat requirement is 200 g per week; nitrogen (protein) requirement is 0.15 g/kg per day. Nitrogen need increases to 0.25 g/kg/day in hyper catabolic s...
openbookqa
obqa_02_00022
You would use a seismometer if
[ "A mysterious rumble off the coast of Japan", "Someone farted in class", "Kids were stomping on the floor", "to track the buzz of a bee" ]
A
a seismometer is used to measure the strength or magnitude of an earthquake
ARC-Challenge
arc_04_03021
Which of the following is NOT a description of compounds?
[ "They can exist in the form of atoms or molecules.", "They consist of atoms of two or more elements bonded together.", "They have properties that are different from their component elements.", "They can be broken down into elements by chemical means but not physical means." ]
A
null
medmcqa
medmcqa_05_02824
Changes in which amyloid structure makes it insoluble?
[ "Primary", "Secondary", "Tertiary", "Quaternary" ]
B
Ans. is 'b' i.e., Secondary * Amyloid is a protein that has an alteration in its secondary structure which imparts it a particular insoluble form, called the beta-pleated sheet conformation.* Amyloid material is composed of two components -i) Major component (95%) - Fibril amyloid protein.ii) Minor components (5%) - P-...
sciq
sciq_01_05450
Which common oxidizing agent can be used to oxidize alcohols?
[ "potassium dichromate", "hydrogen dichromate", "hydrogen chloride", "potassium chloride" ]
A
Oxidation-reduction reactions are of central importance in organic chemistry and biochemistry. The burning of fuels that provides the energy to maintain our civilization and the metabolism of foods that furnish the energy that keeps us alive both involve redox reactions. All combustion reactions are also redox reaction...
math_qa
mathqa_03_02096
7 machines at a certain factory operate at the same constant rate . if 6 of these machines , operating simultaneously , take 42 hours to fill a certain production order , how many fewer hours does it take all 7 machines , operating simultaneously , to fill the same production order ?
[ "3", "4", "5", "6" ]
D
the total work is 6 * 42 = 252 machine hours the time required for seven machines is 252 / 7 = 36 hours , thus 6 fewer hours . the answer is d .
ARC-Easy
arc_04_00806
Which object is nonliving?
[ "bear", "bicycle", "bird", "butterfly" ]
B
null
ARC-Challenge
arc_04_02533
Lighting a match and baking a cake are two actions that involve chemical changes. Why are these actions considered chemical changes?
[ "They change the state of matter.", "They create new substances.", "They change volume.", "They create energy." ]
B
null
math_qa
mathqa_03_03146
a certain bus driver is paid a regular rate of $ 16 per hour for any number of hours that does not exceed 40 hours per week . for any overtime hours worked in excess of 40 hours per week , the bus driver is paid a rate that is 75 % higher than his regular rate . if last week the bus driver earned $ 752 in total compens...
[ "36", "40", "44", "48" ]
C
"for 40 hrs = 40 * 16 = 640 excess = 752 - 640 = 112 for extra hours = . 75 ( 16 ) = 12 + 16 = 28 number of extra hrs = 112 / 28 = 28 / 7 = 4 total hrs = 40 + 4 = 44 answer c 44"
sciq
sciq_01_01497
Fungi are no longer classified as what, possessing cell walls made of chitin rather than cellulose?
[ "flowers", "eukaryotes", "plants", "roots" ]
C
Today, fungi are no longer classified as plants. We now know that they have unique physical, chemical, and genetic traits that set them apart from plants and other eukaryotes. For example, the cell walls of fungi are made of chitin , not cellulose. Also, fungi absorb nutrients from other organisms, whereas plants make ...
sciq
sciq_01_07089
What are surface currents generally caused by?
[ "minor wind belts", "major steam belts", "major wind belts", "major humidity belts" ]
C
Like air in the atmosphere, ocean water moves in currents. A current is a stream of moving water that flows through the ocean. Surface currents are caused mainly by winds but not daily winds. Surface currents are caused by the major wind belts. These winds blow in the same direction all the time. So they can keep water...