dataset
stringclasses
6 values
id
stringlengths
12
16
question
stringlengths
1
935
choices
listlengths
4
4
answer
stringclasses
4 values
support
stringlengths
0
7.76k
math_qa
mathqa_03_00599
the average mark of the students of a class in a particular exam is 72 . if 5 students whose average mark in that exam is 40 are excluded , the average mark of the remaining will be 92 . find the number of students who wrote the exam ?
[ "12", "13", "14", "16" ]
B
"let the number of students who wrote the exam be x . total marks of students = 80 x . total marks of ( x - 5 ) students = 92 ( x - 5 ) 72 x - ( 5 * 40 ) = 92 ( x - 5 ) 260 = 20 x = > x = 13 answer : b"
ARC-Easy
arc_04_01738
In the life cycle of a fly, which stage comes after the larval stage?
[ "egg", "adult", "nymph", "pupa" ]
D
null
medmcqa
medmcqa_05_04905
Early age of sex is risk factor for -
[ "Carcinoma Cervix", "Carcinoma vulva", "Carcinoma vagina", "Carcinoma ovary" ]
A
Ans. is 'a' i.e., Carcinoma cervix [Ref: Williams Gynaec 2nd/e p.)o Having sex with multiple sexual partners and early age of first sexual intercourse are the risk factors for the develop- ment of carcinoma cervix.
ARC-Challenge
arc_04_03081
Which of the following is a SOURCE of light?
[ "Earth", "planet", "star", "moon" ]
C
null
sciq
sciq_01_11247
Like the stem, what basic plant structure contains vascular bundles composed of xylem and phloem?
[ "bark", "flower", "root", "leaf" ]
D
Like the stem, the leaf contains vascular bundles composed of xylem and phloem (Figure 30.27). The xylem consists of tracheids and vessels, which transport water and minerals to the leaves. The phloem transports the photosynthetic products from the leaf to the other parts of the plant. A single vascular bundle, no matt...
ARC-Challenge
arc_04_02778
A student boils 100 grams of water to form water vapor (gas). What method should the student use to determine that the mass of the water vapor is equal to 100 grams?
[ "measuring the amount of water vapor (gas) in the air", "collecting the water vapor (gas) and cooling it back to a liquid", "weighing the beaker before and after the water is boiled", "comparing the temperature of the boiling water to the temperature of the water vapor (gas)" ]
B
null
sciq
sciq_01_06505
What causes oxides to decompose?
[ "precipitation", "heat", "humidity", "acidity" ]
B
Found as a pure element in nature; oxides decompose with heating.
openbookqa
obqa_02_04406
In order for crops to grow food safely, pesticides are used on them. When it floods, this causes what to be poisonous?
[ "air", "farmers", "Corn", "Runoff" ]
D
crop rotation renews soil
medmcqa
medmcqa_05_03643
In a alcoholic individual, development of tolerance that develops earliest and disappears almost as rapid as it develops, is due to:
[ "Pharmacokinetics", "Pharmacodynamics", "Cellular tolerance", "Behavioural tolerance" ]
A
Ans. a (Pharmacokinetics). (Ref. Harrison's medicine 18th/ Ch. 392).Type: COMMON TYPES OF ALCOHOL INTOLERANCEFirstafter 1-2 weeks of daily drinking, metabolic, or pharmacokinetic tolerance can develop, with a 30% increase in the rate of hepatic alcohol metabolism. This alteration disappears almost as rapidly as it deve...
math_qa
mathqa_03_02642
how long will a boy take to run round a square field of side 40 meters , if he runs at the rate of 12 km / hr ?
[ "52 sec", "48 sec", "60 sec", "25 sec" ]
B
speed = 12 km / hr = 12 * 5 / 18 = 10 / 3 m / sec distance = 40 * 4 = 160 m time taken = 160 * 3 / 10 = 48 sec answer is b
sciq
sciq_01_01313
An example of irreversible denaturation of what substance occurs to the liquid albumin when an egg is fried?
[ "bacterial", "liquid", "protein", "acids" ]
C
Denaturation and Protein Folding Each protein has its own unique sequence and shape that are held together by chemical interactions. If the protein is subject to changes in temperature, pH, or exposure to chemicals, the protein structure may change, losing its shape without losing its primary sequence in what is known ...
medmcqa
medmcqa_05_02472
On exposure to sunlight which Vitamin is lost ?
[ "Vitamin A", "Vitamin B1", "Vitamin B2", "Vitamin C" ]
D
Ans. is 'd' i.e., Vitamin C
sciq
sciq_01_04280
Meats and dairy products link to photosynthesis because the animals were fed what?
[ "carnivorous diets", "plant-based foods", "chloroplasts", "biofuel" ]
B
Major grocery stores in the United States are organized into departments, such as dairy, meats, produce, bread, cereals, and so forth. Each aisle contains hundreds, if not thousands, of different products for customers to buy and consume (Figure 5.4). Although there is a large variety, each item links back to photosynt...
sciq
sciq_01_04235
Because core electrons are closer to the nucleus, they are not involved in what?
[ "diffusion", "splitting", "bonding", "fission" ]
C
Core electrons are the electrons that are closer to the nucleus and therefore do not participate in bonding.
sciq
sciq_01_10931
Which landmark book on evolution via natural selection did charles darwin publish in 1859?
[ "on the origin of mammals", "on the origin of species", "on various kinds of animals", "on the ethnic of species" ]
B
Darwin finally published his theory of evolution by natural selection in 1859. He presented it in his book On the Origin of Species . The book is very detailed and includes a lot of evidence for the theory. Darwin’s book changed science forever. The theory of evolution by natural selection became the unifying theory of...
math_qa
mathqa_03_00002
the cash realised on selling a 14 % stock is rs . 106.25 , brokerage being 1 / 4 % is
[ "123", "106", "100", "156" ]
B
explanation : cash realised = rs . ( 106.25 - 0.25 ) = rs . 106 . answer : b
medmcqa
medmcqa_05_02440
The following antibiotic accentuates the neuromu-scular blockade produced by pancuronium:
[ "Streptomycin", "Erythromycin", "Penicillin G", "Chloramphenicol" ]
A
(Ref: KDT 6e p721, 722) Aminoglycosides (like streptomycin and gentamicin) can accentuate the neuromuscular blockade produced by competitive blockers (like pancuronium). Mechanism of neuromuscular blockade produced by aminoglycosides is the inhibition of presynaptic release of ACh.
sciq
sciq_01_04071
Dna encodes instructions for what kind of molecules?
[ "proteins", "fats", "acids", "cells" ]
A
DNA encodes instructions for proteins. RNA copies the genetic code in DNA and carries it to a ribosome. There, amino acids are joined together in the correct sequence to make a protein.
sciq
sciq_01_03037
Which carbohydrate is produced by photosynthesis?
[ "glucose", "insulin", "sugar", "protein" ]
A
Glucose is the carbohydrate produced by photosynthesis. Energy-rich glucose is delivered through your blood to each of your cells.
sciq
sciq_01_00878
Where do the cells in your body get oxygen from?
[ "pores", "red blood cells", "white blood cells", "the digestive system" ]
B
All the cells of your body need oxygen, which they get from red blood cells. Red blood cells, in turn, get oxygen in the lungs. The lungs are the main organs of the respiratory system. The respiratory system is the body system that exchanges gases with the outside air. It brings air containing oxygen into the body for ...
math_qa
mathqa_03_03483
a cargo ships engines failed 100 miles away from the port . due to the changing wind direction , it is moving 12 miles towards the port and 6 miles away from the port . if the wind pattern remains same , how many miles it will travel before reaching the port ?
[ "a - 179", "b - 240", "c - 280", "d - 100" ]
C
ships overall distance covered per cycle is + 6 miles take 100 - 6 take 94 / 6 to lowest divisible number - 90 / 6 this means that it will take 15 ` ` overall ' ' actions to reach the 90 th mile . - 15 * 18 miles added later set cycle start at 90 . travel 10 miles and reach the anchor point - add 10 to total 15 * 18 + ...
sciq
sciq_01_08794
Triploblasts include a broad range of animals, from flatworms to arthropods to what?
[ "cells", "mammals", "vertebrates", "invertebrates" ]
C
math_qa
mathqa_03_03447
a milk man has 15 liters of milk . if he mixes 5 liters of water , which is freely available , in 20 liters of pure milk . if the cost of pure milk is rs . 18 per liter , then the profit of the milkman , when he sells all the mixture at cost price is :
[ "20 %", "25 %", "33.33 %", "18 %" ]
A
"explanation : when the water is freely available and all the water is sold at the price of the milk , then the water gives the profit on the cost of 20 liters of milk . therefore , profit percentage = 20 % . answer : a"
openbookqa
obqa_02_01768
There is more carbon dioxide in
[ "a forest", "a garden", "a park", "a crowded airplane" ]
D
as the population of plants decreases , carbon in the atmosphere will increase
sciq
sciq_01_05499
What is required to break down and build up molecules and to transport molecules across plasma membranes?
[ "salt", "electricity", "energy", "calcium" ]
C
Inside every cell of all living things, energy is needed to carry out life processes. Energy is required to break down and build up molecules and to transport molecules across plasma membranes. All life’s work needs energy. A lot of energy is also simply lost to the environment as heat. The story of life is a story of ...
sciq
sciq_01_11270
The amount of water vapor in the air and the temperature of the medium affects how fast what travels?
[ "light", "colour", "traffic", "sound" ]
D
The speed of sound also depends on the temperature of the medium. For a given medium such as air, sound has a slower speed at lower temperatures. You can compare the speed of sound in air at different temperatures in Table below . A lower temperature means that particles of the medium are moving more slowly, so it take...
sciq
sciq_01_04953
Organs that produce eggs and secrete estrogen are part of what system?
[ "male reproductive system", "female reproductive system", "circulatory system", "digestive system" ]
B
one of two female reproductive organs that produces eggs and secretes estrogen.
openbookqa
obqa_02_01590
What causes food to taste sweet?
[ "crystal sucrose", "heat", "salt", "pepper" ]
A
sugar causes food to taste sweet
math_qa
mathqa_03_01426
what is log 3 ( 4 ) log 4 ( 5 ) . . . log 80 ( 81 ) ?
[ "1", "4", "81", "log 80 243" ]
B
recall the change of base formula logb ( a ) = ln ( a ) ln ( b ) : ( alternatively , we can substitute logc for ln on the right , as long as the base is the same on the top and on the bottom . ) using this , we can rewrite the entire expression using natural logarithms , as ln ( 4 ) ln ( 3 ) ln ( 5 ) ln ( 4 ) ln ( 81 )...
medmcqa
medmcqa_05_03846
Drug used in scorpion bite: CMC (Vellore) 13, 14; COMEDK 14
[ "EDTA", "Neostigmine", "N-acetylcysteine", "Prazosin" ]
D
Ans. Prazosin
openbookqa
obqa_02_03667
Why are ferrous metals magnetic?
[ "The shiny reflective coating", "They are very heavy. Their weight.", "The iron contained inside of them", "The copper in all of them" ]
C
ferrous metals contain iron
sciq
sciq_01_04699
Group 16 is called what?
[ "metalloids", "the acid group", "the oxygen group", "noble gases" ]
C
Group 16 is called the oxygen group. The first three elements in this group are nonmetals. They are followed by one metalloid and one metal. All the elements in the oxygen group have six valence electrons, and all are reactive. Oxygen (O), for example, readily reacts with metals to form compounds such as rust. Oxygen i...
sciq
sciq_01_02688
Early blastomeres can form what if isolated?
[ "cancer", "tumors", "a complete embryo", "lesions" ]
C
sciq
sciq_01_03098
What is critical for the formation of hemoglobin?
[ "platelets", "salts", "proteins", "iron ions" ]
D
Minerals Minerals in food are inorganic compounds that work with other nutrients to ensure the body functions properly. Minerals cannot be made in the body; they come from the diet. The amount of minerals in the body is small—only 4 percent of the total body mass—and most of that consists of the minerals that the body ...
sciq
sciq_01_03078
What occurs when the immune system is not working properly?
[ "cancer", "allergy", "immunodeficiency", "anemia" ]
C
Immunodeficiency occurs when the immune system is not working properly. As a result, it cannot fight off pathogens that a normal immune system would be able to resist. Rarely, the problem is caused by a defective gene. More often, it is acquired during a person’s lifetime. Immunodeficiency may occur for a variety of re...
openbookqa
obqa_02_00280
With the apple tree chopped down, there was now no place for
[ "apples", "apple pies", "falling leaves", "bird's nests" ]
D
cutting down trees has a negative impact on an organisms living in an ecosystem
sciq
sciq_01_11115
Living things are highly organized following a hierarchy that includes atoms, molecules, organelles, cells, tissues, organs, and organ systems. organisms, in turn, are grouped as populations, communities, ecosystems, and this?
[ "hydrosphere", "biosphere", "endosphere", "bionicsphere" ]
B
CHAPTER SUMMARY 1.1 Themes and Concepts of Biology Biology is the science of life. All living organisms share several key properties such as order, sensitivity or response to stimuli, reproduction, adaptation, growth and development, regulation, homeostasis, and energy processing. Living things are highly organized fol...
sciq
sciq_01_10125
Blood calcium levels are tightly regulated by the what system?
[ "cardiovascular", "digestive", "nervous", "endocrine" ]
D
Of course, calcium is critical for many other biological processes. It is a second messenger in many signaling pathways, and is essential for muscle contraction, nerve impulse transmission, and blood clotting. Given these roles, it is not surprising that blood calcium levels are tightly regulated by the endocrine syste...
ARC-Challenge
arc_04_02591
Which action best models the motion of an arm at the elbow joint?
[ "opening a drawer", "slicing an apple", "closing a car door", "pushing a wheelbarrow" ]
C
null
sciq
sciq_01_07046
In the freshwater flatworms, protonephridia serve chiefly in what?
[ "enculturation", "osmoregulation", "thermoregulation", "excretion" ]
B
sciq
sciq_01_05073
Pseudopods are temporary extensions of what?
[ "the cytoplasm", "the cell wall", "the mucus", "cytopods" ]
A
Almost all protozoa can move. They have special appendages for this purpose. You can see different types in Figure below . Cilia (cilium, singular) are short, hair-like projections. Pseudopods are temporary extensions of the cytoplasm. Flagella are long, whip-like structures. Flagella are also found in most prokaryotes...
sciq
sciq_01_02962
What distinguishing feature predates the branching of mammals from other vertebrates?
[ "adaptation", "teeth", "backbone", "eggs" ]
C
math_qa
mathqa_03_00657
how many numbers from 2 to 11 are exactly divisible by 2 ?
[ "a", "b", "c", "d" ]
C
"2 / 2 = 1 and 11 / 2 = 5 5 - 1 = 4 4 + 1 = 5 numbers . answer : c"
sciq
sciq_01_00953
Intensity is defined to be the power per unit area carried by a what?
[ "filament", "shift", "wire", "wave" ]
D
Intensity is defined to be the power per unit area carried by a wave. Power is the rate at which energy is transferred by the wave. In equation form, intensity I is.
ARC-Challenge
arc_04_02842
Which of these indicates a physical change that occurs during the process of digestion?
[ "the addition of acids to create a ball of food", "the secretion of pepsin to change proteins to peptides", "the breakdown of food substances by digestive juices", "the squeezing of food through the intestines" ]
D
null
sciq
sciq_01_05482
What is the result when two monosaccharides are bound together?
[ "hydrolysis", "polyketide", "disaccharide", "Peroxide" ]
C
The simple carbohydrates discussed above are used as the building blocks for complex carbohydrates. Monosaccharides like glucose or fructose can be linked together to form larger structures. When two monosaccharides are bound together, the result is a disaccharide . Some common disaccharides are shown in the Table belo...
medmcqa
medmcqa_05_02262
Super carrier of HBV shows following serum markers ?
[ "HBsAg", "HbsAg + HBV DNA", "HbsAg + HBeAg + HBV DNA", "Anti-HBsAg + HBV DNA" ]
C
Ans. is 'c' i.e., HbsAg + HBeAg + HBV DNA In HBV infection, there are two types of carriers : Super Carriers High titre of HBs Ag, HBe Ag, DNA polymerase and HBV in the circulation Highly infective Simple carriers Low titre of HBsAg with negative HBe Ag, DNA polymerase and HBV Have low infectivity
sciq
sciq_01_03553
Insect's antennae are useful for sensing what?
[ "sunlight", "chemicals", "microorganisms", "contaminants" ]
B
Insects have six legs and a pair of antennae for sensing chemicals. They also have several eyes and specialized mouthparts for feeding.
ARC-Easy
arc_04_01935
Removing waste from the body is the primary function of which body system?
[ "excretory", "nervous", "circulatory", "skeletal" ]
A
null
sciq
sciq_01_06440
Natural gas burns cleaner and produces less carbon dioxide than fuels of what type?
[ "fossil fuels", "biofuels", "solar energy", "renewable fuels" ]
A
Natural gas burns cleaner than other fossil fuels. As a result, it causes less air pollution. It also produces less carbon dioxide than the other fossil fuels. Because it burns cleaner than other fossil fuels, natural gas has a good reputation. Still, natural gas does emit pollutants.
openbookqa
obqa_02_03475
A microscope uses refraction to increases
[ "mass", "ego", "volume", "perception of objects" ]
D
magnifying makes seeing small things easier through using a microscope
math_qa
mathqa_03_01458
after a storm deposits 110 billion gallons of water into the city reservoir , the reservoir is 60 % full . if the original contents of the reservoir totaled 220 billion gallons , the reservoir was approximately what percentage full before the storm ?
[ "40 %", "48 %", "54 %", "58 %" ]
A
when the storm deposited 110 billion gallons , volume of water in the reservoir = 220 + 110 = 360 billion gallons if this is only 60 % of the capacity of the reservoir , the total capacity of the reservoir = 330 / 0.6 = 550 billion gallons therefore percentage of reservoir that was full before the storm = ( 220 / 550 )...
sciq
sciq_01_02119
Technically, any redox reaction can be set up to make a what?
[ "voltaic cell", "skaht cell", "Black Cell", "blocky cell" ]
A
Technically, any redox reaction can be set up to make a voltaic cell. In modern society, however, only certain redox reactions are put to practical use. A portable voltaic cell that generates electricity to power devices for our convenience is called a battery. All batteries are based on redox reactions. The first batt...
sciq
sciq_01_05898
What is the term for the method of sending out ultrasound waves to determine the locations of objects?
[ "magnetism", "morphology", "echolocation", "catabolism" ]
C
Animals such as bats and dolphins send out ultrasound waves and use their echoes, or reflected waves, to identify the locations of objects they cannot see. This is called echolocation. Animals use echolocation to find prey and avoid running into objects in the dark. You can see in the Figure below and also at the follo...
ARC-Easy
arc_04_02072
Rhea is a moon of Saturn. Which of these facts about Rhea best indicates that it does not have a water cycle in which water changes state?
[ "Its radius is 765 km.", "Its density is about 1.3 kg/m3.", "Its period of rotation is about 4.5 Earth days.", "Its temperature is between -174°C and -220°C." ]
D
null
openbookqa
obqa_02_04869
reptiles lay what?
[ "live young", "rocks", "dirt", "oval whites" ]
D
reptiles lay eggs
sciq
sciq_01_06126
What phenomenon, crucial for evolution, creates new genetic variation in a gene pool and is how all new alleles first arise?
[ "radiation", "mutation", "adaptation", "natural selection" ]
B
Mutation creates new genetic variation in a gene pool. It is how all new alleles first arise. In sexually reproducing species, the mutations that matter for evolution are those that occur in gametes. Only these mutations can be passed to offspring. For any given gene, the chance of a mutation occurring in a given gamet...
medmcqa
medmcqa_05_02794
Estrogen beta receptors are found on
[ "Uterus", "Blood vessels", "Ovary", "Vagina" ]
B
Oestrogen beta receptors are found in blood vessels Ref: guyton and hall textbook of medical physiology 12 edition page number:636,637,638
medmcqa
medmcqa_05_00092
Most important in causing coronary artery disease (CAD) is
[ "HDL", "LDL", "VLDL", "Triglycerides" ]
B
LDL LDL concentration in blood has a positive correlation with the incidence of cardiovascular diseases. LDL-cholesterol is deposited in vessels and promotes atherosclerosis. Therefore, LDL is called 'bad cholesterol' or 'lethally dangerous lipoprotein (LDL)'.
sciq
sciq_01_02523
Enzymes in the stomach and small intestine break down proteins into what components?
[ "antioxidants", "atoms", "amino acids", "lactic acids" ]
C
Figure 24.17 Digestive Enzymes and Hormones Enzymes in the stomach and small intestine break down proteins into amino acids. HCl in the stomach aids in proteolysis, and hormones secreted by intestinal cells direct the digestive processes.
sciq
sciq_01_01588
What is the term for the class of ectothermic, four-legged vertebrates that produce amniotic eggs?
[ "Turtles", "mammals", "amphibians", "reptiles" ]
D
Reptiles are a class of ectothermic, four-legged vertebrates that produce amniotic eggs. They include turtles, crocodiles, lizards, and snakes. Reptiles were the first vertebrates to live full time on land, and they evolved many terrestrial adaptations.
sciq
sciq_01_03238
Which part of the reproductive process only contributes one set of chromosomes?
[ "ovum", "egg", "sperm", "plasma" ]
C
This sperm is ready to penetrate the membrane of this egg. Notice the difference in size of the sperm and egg. Why is the egg so much larger? The egg contributes all the cytoplasm and organelles to the zygote. The sperm only contributes one set of chromosomes.
openbookqa
obqa_02_00334
The running of the bulls in mexico is a source of what type of energy for the object?
[ "running of bulls", "solar power", "animals", "kinetic" ]
D
motion is a source of kinetic energy in an object
sciq
sciq_01_11299
The mostly subterranean lifestyle of stone plants reduces water loss from evaporation and inhibits what?
[ "reactions", "chlorophyll", "tissues", "photosynthesis" ]
D
sciq
sciq_01_05170
What is an important level of organization in ecology and the unit of microevolution?
[ "macro", "organization", "population", "system" ]
C
The population is an important level of organization in ecology. It is also the unit of microevolution.
math_qa
mathqa_03_00680
the radius of a wheel is 22.4 cm . what is the distance covered by the wheel in making 500 resolutions
[ "700", "704", "704", "706" ]
B
"in one resolution , the distance covered by the wheel is its own circumference . distance covered in 500 resolutions . = 500 * 2 * 22 / 7 * 22.4 = 70400 cm = 704 m answer : option b"
math_qa
mathqa_03_03276
a started a business with an investment of rs . 10000 and after 7 months b joined him investing rs . 12000 . if the profit at the end of a year is rs . 24000 , then the share of b is ?
[ "10000", "8000", "12000", "6000" ]
B
"ratio of investments of a and b is ( 10000 * 12 ) : ( 12000 * 5 ) = 2 : 1 total profit = rs . 24000 share of b = 1 / 3 ( 24000 ) = rs . 8000 answer : b"
openbookqa
obqa_02_01580
The moon is bright in the night sky, especially when full because
[ "Earth shines", "stars absorb it", "sunlight brightens it", "batteries power it" ]
C
the moon reflects sunlight towards the Earth
openbookqa
obqa_02_02409
Why would soil be more loosely packed than it was the previous day?
[ "the local eagle population", "the native American population", "the neighborhood human population", "the native worm population" ]
D
tunnels in soil loosen that soil
sciq
sciq_01_06840
The electromagnetic spectrum represents the full range of frequency of what type of wave?
[ "electromagnetic", "mechanical", "transverse wave", "seismic" ]
A
Electromagnetic waves vary in their frequencies and wavelengths, and waves with higher frequencies have greater energy. The electromagnetic spectrum represents the full range of frequencies of electromagnetic waves.
openbookqa
obqa_02_04353
To destroy embarrassing evidence you can
[ "clobber it with a whale", "post it on a social network", "discard it in a rubbish bin", "flick it into lava" ]
D
high temperatures can cause an object to combust
sciq
sciq_01_04412
The regulation of gene expression is extremely important during the development of what?
[ "tissues", "cells", "organism", "protein" ]
C
3. Name and describe the division of gymnosperms.
medmcqa
medmcqa_05_00385
Extra calories required during pregnancy state is: March 2010
[ "100 kcal/day", "200 kcal/day", "300 kcal/day", "400 kcal/day" ]
C
Ans. C: 300 kcal/day Extra calories requirement: During pregnancy:+300 kcal During first 6 months of lactation:+550 kcal During next 6 months of lactation:+400 kcal
ARC-Easy
arc_04_00948
Which cell structure carries out a function for a cell that is similar to the function that bark carries out for a tree?
[ "cell wall", "nucleus", "chloroplast", "mitochondrion" ]
A
null
ARC-Easy
arc_04_00771
In the Adirondack forests of New York, some trees have died. The change in the forest is thought to be related to air pollution and rain. Which abiotic factor most likely has been changed as a result of the pollution and rain which resulted in the death of the trees?
[ "a decrease in the amount of available oxygen", "an increase in the amount of sunlight", "a decrease in the pH of the soil", "an increase in soil nutrients" ]
C
null
sciq
sciq_01_06142
Like birds, most other reptiles excrete their nitrogenous wastes as what acid?
[ "hydrochloric", "uric", "sulphuric", "lactic" ]
B
sciq
sciq_01_10828
What process determines the dna sequence of an entire genome?
[ "dna replication", "genetic factorization", "chromosomal counting", "whole-genome sequencing" ]
D
17.3 | Whole-Genome Sequencing By the end of this section, you will be able to: • Describe three types of sequencing • Define whole-genome sequencing Although there have been significant advances in the medical sciences in recent years, doctors are still confounded by some diseases, and they are using whole-genome sequ...
math_qa
mathqa_03_04502
in a class of 38 students , 2 students did not borrow any books from the library , 12 students each borrowed 1 book , 10 students each borrowed 2 books , and the rest borrowed at least 3 books . if the average number of books per student was 2 , what is the maximum number of books any single student could have borrowed...
[ "3", "5", "8", "13" ]
B
"total # of students = 38 avg # of books per student = 2 total # of books = 38 * 2 = 76 # of student borrowed at least 3 books = 38 - 2 - 12 - 10 = 14 # of books borrowed by above 14 students = 76 - ( 12 * 1 ) + ( 10 * 2 ) = 44 considering that 13 out of above 14 students borrowed only 3 books , # of books borrowed = 1...
sciq
sciq_01_11053
Flowers, double fertilization, and fruits are unique features of what life cycle?
[ "angiosperm", "protozoa", "early lifehood", "dinoflagellate" ]
A
38.1 Flowers, double fertilization, and fruits are unique features of the angiosperm life cycle.
medmcqa
medmcqa_05_02776
Common host of Balantidium coli is
[ "Cattle", "Dog", "Goat", "Pig" ]
D
Ans: d (Pig)Ref: C K Jayaram Panicker's Textbook of Medical Parasitology, 6th ed. Pg. 111-112Balantidium coli* Only ciliate protozoan parasite of humans* Largest protozoan parasite in humans* It is a zoonosis, the principal reservoir being pigs, monkeys and rats.* It occurs in 2 stages -- trophozoite and cyst form.* Tr...
openbookqa
obqa_02_02065
A hard wind blowing at the back of a bike that is being peddled forward will
[ "make it stop", "speed it up", "slow it down", "blow it up" ]
B
force causes the speed of an object to increase
medmcqa
medmcqa_05_03050
Corpora amylacea is seen in
[ "Prostate", "Seminal vesicle", "Thymus", "Testis" ]
A
Corpora amylacea are small hyaline masses of unknown significance found in the prostate gland, neuroglia, and pulmonary alveoli. They are derived from degenerate cells or thickened secretions and occur more frequently with advancing age. Ref - BDC 6e vol2 pg410 ,researchgate.net
sciq
sciq_01_01688
What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called?
[ "radioactive decrease", "nuclear decay", "radioactive decay", "initial decay" ]
C
Radioactive decay is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements. There are three types of radioactive decay: alpha, beta, and gamma decay. Each differs in what is emitted, how far it can travel, and what it can penetrate.
sciq
sciq_01_08697
How many membranes form the mitochondrion structure of a cell?
[ "one", "two", "five", "three" ]
B
Two separate membranes form the mitochondrion. The inner membrane folds into cristae which divide the organelle into three compartments: the intermembrane space (between outer and inner membranes), cristae space (formed by infoldings of the inner membrane), and the matrix (within the inner membrane). The Krebs Cycle ta...
math_qa
mathqa_03_00578
a bag contains 6 white marbles and 6 black marbles . if each of 6 girls and 6 boys randomly selects and keeps a marble , what is the probability that all of the girls select the same colored marble ?
[ "1 / 35", "1 / 10", "1 / 3", "1 / 462" ]
D
"first , total ways to select for all boys and girls , i . e 12 ! / ( 6 ! * 6 ! ) = 12 * 11 * 10 * 9 * 8 * 7 / 6 * 5 * 4 * 3 * 2 = 924 then there are one two way girls can have all same colors , either white or black . the number of ways in which 6 girls can select 6 white balls = 6 c 6 = 1 the number of ways in which ...
openbookqa
obqa_02_03997
Coral get their ____ from algae
[ "vibrance", "love", "apples", "candles" ]
A
usually coral lives in warm water
ARC-Easy
arc_04_01952
The principle of uniformitarianism states that most of the landscape of Earth was formed slowly and over a long period of time. Which occurrence of Earth is least supported by this principle?
[ "soil development", "volcanic eruption", "plate movement", "fossil formation" ]
B
null
ARC-Easy
arc_04_01359
A student had a cup of ice while working outside. After a while, the ice melted because the Sun emits energy in the form of light and
[ "electricity.", "heat.", "magnetism.", "sound." ]
B
null
math_qa
mathqa_03_03795
due to construction , the speed limit along an 7 - mile section of highway is reduced from 55 miles per hour to 35 miles per hour . approximately how many minutes more will it take to travel along this section of highway at the new speed limit than it would have taken at the old speed limit ?
[ "2", "3", "4", "5" ]
C
"7 / 35 - 7 / 55 = 7 / 5 * ( 11 - 7 ) / 77 = 7 / 5 * 4 / 77 * 60 min = 7 * 12 * 4 / 77 = 336 / 77 ~ 4.3 answer - c"
math_qa
mathqa_03_01210
in a certain school , 20 % of students are below 8 years of age . the number of students above 8 years of age is 2 / 3 of the number of students of 8 years of age which is 60 . what is the total number of students in the school ?
[ "72", "80", "125", "150" ]
C
explanation : let the number of students be x . then , number of students above 8 years of age = ( 100 - 20 ) % of x = 80 % of x . 80 % of x = 60 + 2 / 3 of 60 80 / 100 x = 100 x = 125 . answer : option c
sciq
sciq_01_11206
What element on the periodic table forms the most diverse compounds?
[ "oxygen", "carbon", "helium", "hydrogen" ]
B
Life on Earth is based on carbon. A possible explanation is that no other element in the periodic table forms compounds that are so diverse in their chemistry and physical properties. Discuss the chemistry of carbon with regard to.
medmcqa
medmcqa_05_01315
Lines of Blaschko represent –
[ "Lines along lymphatics", "Lines along blood vessels", "Lines along nerves", "Lines of development" ]
D
Lines of Blaschko represent non random lines of development of skin.
sciq
sciq_01_03787
When an unstable nucleus emits radiation and is transformed into the nucleus of other elements this is called?
[ "radioactive decay", "fusion decay", "naturally decay", "explosive decay" ]
A
To balance a nuclear reaction. The two general kinds of nuclear reactions are nuclear decay reactions and nuclear transmutation reactions. In a nuclear decay reaction, also called radioactive decay, an unstable nucleus emits radiation and is transformed into the nucleus of one or more other elements. The resulting daug...
math_qa
mathqa_03_04190
the annual interest rate earned by an investment increased by 10 percent from last year to this year . if the annual interest rate earned by the investment this year was 13 percent , what was the annual interest rate last year ?
[ "1 %", "1.1 %", "9.1 %", "11.81 %" ]
D
13 = 1.1 * x x = 11.81 % answer d )
sciq
sciq_01_09611
What decay produces helium nuclei?
[ "alpha decay", "radiative decay", "Beta Decay", "duo decay" ]
A
A final effect of this trapped radiation merits mention. Alpha decay produces helium nuclei, which form helium atoms when they are stopped and capture electrons. Most of the helium on Earth is obtained from wells and is produced in this manner. Any helium in the atmosphere will escape in geologically short times becaus...
openbookqa
obqa_02_01461
A bucket of hot water has steam rolling off of it. The steam collects on the sides of the bucket and
[ "melts", "fries", "pools", "glows" ]
C
condensing causes a liquid to form
sciq
sciq_01_04238
What are saprobes that decompose organic matter?
[ "sponges", "fungi", "chordates", "protists" ]
B
24.3 Ecology of Fungi Fungi have colonized nearly all environments on Earth, but are frequently found in cool, dark, moist places with a supply of decaying material. Fungi are saprobes that decompose organic matter. Many successful mutualistic relationships involve a fungus and another organism. Many fungi establish co...
sciq
sciq_01_06146
The breasts contain what to give milk to feed a baby?
[ "sebaceous glands", "fetal glands", "primordial glands", "mammary glands" ]
D
The female reproductive organs include the vagina, uterus, fallopian tubes, and ovaries ( Figure below ). The breasts are not shown in this figure. They are not considered reproductive organs, even though they are involved in reproduction. They contain mammary glands that give milk to feed a baby. The milk leaves the b...
sciq
sciq_01_09395
Energy that is released when a chemical reaction takes place is known as what?
[ "consequence energy", "thermal energy", "liquid energy", "chemical energy" ]
D
medmcqa
medmcqa_05_02327
Relcovaptan is ?
[ "Angiotensin antagonist", "Renin inhibitor", "Vasopressin antagonist", "ACE inhibitor" ]
C
Ans. is'c'i.e., Vasopressin antagonistVasopressin receptor antagonists (Vaptans)At V1A receptor - RelcovaptanAt V1B receptor - NelivaptanAt V2 receptor - Lixivaptan, sotavapton, tolvaptan, mozavaptanNon-selective - Conivapton