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
sciq
sciq_01_09035
Bilaterally symmetrical animals have both dorsal and what type of sides?
[ "exterior", "anterior", "ventral", "posterior" ]
C
math_qa
mathqa_03_00574
a soft drink company had 6000 small and 14000 big bottles in storage . if 20 % of small 23 % of big bottles have been sold , then the total bottles remaining in storage is
[ "15360", "15720", "15060", "14930" ]
B
"6000 + 14000 - ( 0.2 * 6000 + 0.22 * 14000 ) = 15720 . answer : b ."
sciq
sciq_01_02360
Poetically speaking, nature reserves are islands of what, in a sea of habitat degraded by human activity?
[ "refuge", "habitats", "biodiversity", "ecosystem" ]
C
openbookqa
obqa_02_04808
A nightcrawler will most likely reside and consume nearest
[ "a rain cloud", "an un-raked yard", "a river rapids", "a mountain avalanche" ]
B
animals live and feed near their habitats
sciq
sciq_01_00841
What type of blood cells transport oxygen to the tissues so they can function?
[ "depleted blood cells", "mutated blood cells", "red blood cells", "white blood cells" ]
C
Red blood cells transport oxygen to the tissues so they can function. In the absence of oxygen, cells cannot carry out their biochemical responsibilities. Oxygen moves to the cells attached to hemoglobin, a protein found in the red cells. In cases of carbon monoxide poisoning, CO binds much more strongly to the hemoglo...
medmcqa
medmcqa_05_01403
Most common cause of death in ADPKD
[ "Renal failure", "Ruptured berry aneurysm", "Cardiovascular disease", "Sepsis" ]
C
Hypertensive or coronary artery disease is the most common cause of death in ADPKD.
sciq
sciq_01_04163
Echinoderms have a unique system for gas exchange, nutrient circulation, and locomotion called the water vascular system. the system consists of a central ring canal and radial canals extending along each arm. water circulates through these structures allowing for gas, nutrient, and this?
[ "water evaporation", "waste exchange", "nerve exchange", "cell exchange" ]
B
Physiological Processes of Echinoderms Echinoderms have a unique system for gas exchange, nutrient circulation, and locomotion called the water vascular system. The system consists of a central ring canal and radial canals extending along each arm. Water circulates through these structures allowing for gas, nutrient, a...
math_qa
mathqa_03_02065
a train requires 10 seconds to pass a pole while it requires 35 seconds to cross a stationary train which is 500 mtrs long . find the speed of the train .
[ "68 kmph", "70 kmph", "72 kmph", "60 kmph" ]
C
"in 10 s the train crosses the pole and in 35 sec the train crosses one more stationary train in 25 sec the train travels a distance of 500 mtrs speed = 500 / 25 = 20 m / s = 20 ( 3600 / 1000 ) = 20 * 18 / 5 = 72 kmph answer : c"
openbookqa
obqa_02_02170
Which of the following would be a reason you are sick?
[ "a cut on your thumb allowed bacteria inside", "your hair follicles get dirt on them", "your stomach digested a delicious breakfast", "your nose allowed water inside" ]
A
skin is used for protecting the body from harmful substances
openbookqa
obqa_02_02203
CO2 is released into the air when sugar eaters
[ "sigh", "touch", "think", "consider" ]
A
an organism breaking down sugar is a source of carbon dioxide
sciq
sciq_01_09865
The size of the solute particles determines the rate of what?
[ "solution", "dissolving", "merging", "extracting" ]
B
The rate at which a solute dissolves depends upon the size of the solute particles. Dissolving is a surface phenomenon since it depends on solvent molecules colliding with the outer surface of the solute. A given quantity of solute dissolves faster when it is ground into small particles than if it is in the form of a l...
math_qa
mathqa_03_00958
if m : n is 3 : 9 and n : p is 9 : 12 then m : p is equal to
[ "1 : 5", "1 : 4", "1 : 6", "1 : 8" ]
B
"the two ratios given are having the same number 9 for n in both the ratios . hence - m : n = 3 : 9 n : p = 9 : 12 = > m : p = 3 : 12 = > 1 : 4 answer b"
sciq
sciq_01_06461
Coronary arteries ans small in what?
[ "density", "height", "diameter", "length" ]
C
sciq
sciq_01_01487
The different types of what systems work together to carry out all the life functions of the individual?
[ "digestive systems", "organ systems", "maturation systems", "heartbeat systems" ]
B
Organ systems are organized into the organism. The different organ systems work together to carry out all the life functions of the individual. For example, cardiovascular and respiratory systems work together to provide the individual with oxygen and rid it of carbon dioxide.
medmcqa
medmcqa_05_00720
Which is not a type of epiphysis?
[ "Traction", "Atavistic", "Friction", "Pressure" ]
C
ANSWER: (C) FrictionREF: Human osteology by BDC 1st edition page 5-6EpiphysisDefinition/ FunctionExamplePressure epiphysesTakes part in transmission of weightHead of femur , condyles of tibia , lower end of radiusTraction epiphysesProvide attachment to more than 1 tendonTrochanter of femur, tubercles of humerus, mastoi...
openbookqa
obqa_02_03936
What makes it difficult to hear on the moon?
[ "lack of air", "stiff breezes", "wind", "sea monsters" ]
A
air is a vehicle for sound
openbookqa
obqa_02_03526
An orange liquid surfaces when
[ "A volcano suddenly explodes", "Someone buries a chest", "Someone starts a fire", "People dig for wells" ]
A
magma is found below the ground
sciq
sciq_01_03244
The hemolymph and body cells exchange chemicals within what body part?
[ "the lungs", "the gums", "the sinuses", "the heart" ]
C
sciq
sciq_01_00568
Gas particles can move randomly in what directions?
[ "one direction", "few directions", "some directions", "all directions" ]
D
Christopher Auyeung. Gas particles move randomly in all directions . CC BY-NC 3.0.
medmcqa
medmcqa_05_04861
Which are not the flexors of forearm?
[ "Pronater teres", "Brachialis", "Brachioradialis", "Anconeus" ]
D
The anconeus is extensor of elbow joint Pronator teres is a superficial flexor of the forearm Brachialis is the anterior or flexor compament of the arm. Brachioradialis flexes the elbow joint but belongs to the lateral group of superficial extensors Ref:1. Clinical anatomy for students, a problem-solving approach, Neet...
openbookqa
obqa_02_04473
Visibility while driving is decreased by bad what?
[ "local forecasts", "roads", "music", "trees" ]
A
bad weather decreases visibility while driving
sciq
sciq_01_02396
Variation in muscle cells gives further insight into some benefits of what type of respiration?
[ "natural", "aerobic", "anaerobic", "enzymatic" ]
C
Variation in muscle cells gives further insight into some benefits of anaerobic respiration. In vertebrate muscles, lactic acid fermentation allows muscles to produce ATP quickly during short bursts of strenuous activity. Muscle cells specialized for this type of activity show differences in structure as well as chemis...
medmcqa
medmcqa_05_02421
Treatment of choice for the annular pancreas is
[ "Gastro jejunostomy", "Pancreatectomy", "Whipple's procedure", "Duodeno duodenostomy" ]
D
Annular pancreas is the most common congenital malformation of the pancreas in association with duodenal atresia.Two types of the annular pancreas are recognized. (1) Extramural - causing high gastrointestinal (duodenal) obstruction; vomiting is the most common presenting symptom (2) Intramural - producing duodenal ulc...
sciq
sciq_01_05819
What kind of membrane do prokaryotic cells have?
[ "cellulose", "plasma wall", "cell wall", "plasma membrane" ]
D
Like other cells, prokaryotic cells have a plasma membrane (see Figure below ). It controls what enters and leaves the cell. It is also the site of many metabolic reactions. For example, cellular respiration and photosynthesis take place in the plasma membrane.
math_qa
mathqa_03_04076
if ( a + b ) = 14 , ( b + c ) = 9 and ( c + d ) = 3 , what is the value of ( a + d ) ?
[ "16 .", "8 .", "7 .", "2 ." ]
B
"given a + b = 14 = > a = 14 - b - - > eq 1 b + c = 9 c + d = 3 = > d = 3 - c - - > eq 2 then eqs 1 + 2 = > a + d = 14 - b + 3 - c = > 17 - ( b + c ) = > 17 - 9 = 8 . option b . . ."
medmcqa
medmcqa_05_02483
A 25 years old female reports in the casualty with history of amenorrhoea for two and half months and abdominal pain and bleeding per vaginum for one day. On examination, vital parameters and other systems are normal. On speculum examination, bleeding is found to come from Os. On bimanual examination, uterus is of 10 w...
[ "Threatened abortion", "Missed abortion", "Inevitable abortion", "Incomplete abortion" ]
C
Ans. is c, i.e. Inevitable abortionRef. Dutta Obs 7/e, p 161, 162Clinical features and diagnosis of different types of AbortionsAbortionClinical pictureSize of uterusInternal osUltrasound1. ThreatenedSlight bleedingCorrespondsClosedLive fetus, subchorionic hemorrhage2. InevitableBleeding and pain, shockEqual or lessOpe...
sciq
sciq_01_07833
What is the air that remains after a forced exhalation called?
[ "remaining volume", "residual volume", "kinetic volume", "abundant volume" ]
B
ARC-Challenge
arc_04_02709
Which process is most directly related to constructing new land?
[ "erosion", "polluting", "deposition", "weathering" ]
C
null
openbookqa
obqa_02_02016
What would a fly find most compelling?
[ "a science fiction movie starring the actor Jeff Goldblum", "a toilet seat scrubbed with baking soda and vinegar", "a saline solution for contact lenses", "a steak forgotten on a counter for an entire day" ]
D
the smell of rotting meat attracts flies
math_qa
mathqa_03_04387
a train covers a distance of 12 km in 10 min . if it takes 1 sec to pass a telegraph post , then the length of the train is ?
[ "10", "20", "30", "15" ]
B
"speed = ( 12 / 10 * 60 ) km / hr = ( 72 * 5 / 18 ) m / sec = 20 m / sec . length of the train = 20 * 1 = 20 m . answer : option b"
sciq
sciq_01_06855
How many dimensions can humans see in?
[ "three", "five", "one", "two" ]
A
Humans can see in three dimensions and color.
sciq
sciq_01_02138
Mass multiplied by velocity equals what force?
[ "inertia", "kinetic energy", "bounce", "momentum" ]
D
- Momentum equals mass multiplied by velocity. It is a vector, direction must be considered. Always define a positive direction and be consistent.
openbookqa
obqa_02_02999
Which of the following is more accurate?
[ "ice has greater mass when carved", "ice has greater mass when crushed", "ice disappears instantly when carved", "ice has approximately equivalent mass when carved" ]
D
as state of matter changes , mass will not change
ARC-Easy
arc_04_01266
Natural selection cannot occur without
[ "competition for unlimited resources.", "gradual warming of Earth.", "genetic variation in species.", "asexual reproduction in species." ]
C
null
openbookqa
obqa_02_01468
A goose needs to move to warmer states for the winter. Leaving its summer home, it heads out without a map, because it can always find the right way by using
[ "the World's great patterns", "the Earth's magnetic patterns", "a map it buys later on", "a compass that points north" ]
B
Earth 's magnetic patterns are used for finding locations by animals that migrate
medmcqa
medmcqa_05_01626
Brown color of contusion is due to:
[ "Biliverdin", "Reduced hemoglobin", "Hemosiderin", "Bilirubin" ]
C
Color Pigment Time Duration Red Oxy hemoglobin Fresh Blue Deoxy hemoglobin Few hours - 3 days Brown Hemosiderin 4 -5 days Green Biliverdin/ hematoidin 6 -7 days Yellow Bilirubin 7 - 14 days
math_qa
mathqa_03_02245
the maximum number of students among them 890 pens and 630 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils is :
[ "10", "910", "1001", "1911" ]
A
"explanation : required number of students = h . c . f of 890 and 630 = 10 . answer : a"
sciq
sciq_01_11457
What two tubes extend from the upper corners of the uterus?
[ "fallopian", "ovary", "ovarian", "Cervical" ]
A
Extending from the upper corners of the uterus are the two fallopian tubes . Each tube reaches (but is not attached to) one of the ovaries. The ovary end of the tube has a fringelike structure that moves in waves. The motion sweeps eggs from the ovary into the tube.
sciq
sciq_01_03148
A plane mirror has a flat reflective surface and forms only which kind of images?
[ "virtual", "enlarged", "reduced", "spherical" ]
A
Most mirrors are plane mirrors. A plane mirror has a flat reflective surface and forms only virtual images. The image formed by a plane mirror is also life sized. But something is different about the image compared with the real object in front of the mirror. Left and right are reversed. Look at the man shaving in Figu...
openbookqa
obqa_02_01393
A boy wants to feed a gecko so he gives it
[ "waxworms", "dog food", "chickens", "markers" ]
A
lizards eat insects
openbookqa
obqa_02_00129
Chimpanzees dig for insects with sticks; what is another example of using tools?
[ "birds using twigs to build nests", "otters using rocks to open clams", "anteaters using their tongue to catch ants", "koalas using their pouch to hold infants" ]
B
An example of using tools is a chimpanzee digging for insects with a stick
math_qa
mathqa_03_00697
500 is increased by 30 % . find the final number .
[ "550", "500", "650", "600" ]
C
explanation final number = initial number + 30 % ( original number ) = 500 + 30 % ( 500 ) = 500 + 150 = 650 . answer c
sciq
sciq_01_05358
What type of reproduction occurs in almost all fungi?
[ "sexual", "asexual", "fragmentation", "budding" ]
A
Sexual reproduction also occurs in virtually all fungi. This involves mating between two haploid hyphae. During mating, two haploid parent cells fuse, forming a diploid spore called a zygospore . The zygospore is genetically different from the parents. After the zygospore germinates, it can undergo meiosis, forming hap...
openbookqa
obqa_02_00745
Wind is a resource that
[ "is a fresh idea", "can be retrieved repeatedly", "is a source of water", "is useless in farming" ]
B
wind is a renewable resource
math_qa
mathqa_03_01865
a man travelled for 13 hours . he covered the first half of the distance at 20 kmph and remaining half of the distance at 25 kmph . find the distance travelled by the man ?
[ "168 km", "864 km", "200 km", "240 km" ]
C
let the distance travelled be x km . total time = ( x / 2 ) / 20 + ( x / 2 ) / 25 = 13 = > x / 40 + x / 50 = 13 = > ( 5 x + 4 x ) / 200 = 13 = > x = 200 km answer : c
sciq
sciq_01_01385
What consists of one or two closed loops through which current can flow?
[ "thermal reaction", "electric circuit", "cooling circuit", "magnetic poles" ]
B
An electric circuit consists of one or two closed loops through which current can flow. It has a voltage source and a conductor and may have other devices such as lights and switches.
medmcqa
medmcqa_05_03727
Germ cells appear in yolk sac at :
[ "3 weeks", "6 weeks", "9 weeks", "5 weeks" ]
A
As early as the third week of gestation, primordial germ cells appear in the endoderm of yolk sac, and these migrate along the dorsal mesentry to the urogenital ridge by the eighth week Reference: Shaw's textbook of Gynaecology 15th edition page 27
math_qa
mathqa_03_00136
n ^ ( n / 2 ) = 6 is true when n = 6 in the same way what is the value of n if n ^ ( n / 2 ) = 10 ?
[ "8", "12", "10", "16" ]
C
n ^ ( n / 2 ) = 10 apply log n / 2 logn = log 10 nlogn = 2 log 10 = log 10 ^ 2 = log 100 logn = log 100 now apply antilog n = 100 / n now n = 10 . answer : c
openbookqa
obqa_02_03972
An example of a learned behavior is
[ "catching a frisbee", "cows eating grass", "having blue eyes", "birds growing wings" ]
A
if an animal is trained to do something then that something is a learned behavior
sciq
sciq_01_08661
Dragonflies were one of the first insects to do what?
[ "sexually reproduce", "fight", "swim", "fly" ]
D
math_qa
mathqa_03_04848
machine p and machine q are each used to manufacture 880 sprockets . it takes machine p 10 hours longer to produce 880 sprockets than machine q . machine q produces 10 % more sprockets per hour than machine a . how many sprockets per hour does machine a produce ?
[ "2", "4", "6", "8" ]
D
"p makes x sprockets per hour . then q makes 1.1 x sprockets per hour . 880 / x = 880 / 1.1 x + 10 1.1 ( 880 ) = 880 + 11 x 11 x = 88 x = 8 the answer is d ."
math_qa
mathqa_03_01821
a rectangular lawn of dimensions 100 m * 60 m has two roads each 10 m wide running in the middle of the lawn , one parallel to the length and the other parallel to the breadth . what is the cost of traveling the two roads at rs . 3 per sq m ?
[ "a", "b", "c", "d" ]
D
"explanation : area = ( l + b – d ) d ( 100 + 60 – 10 ) 10 = > 1500 m 2 1500 * 3 = rs . 4500 answer : option d"
sciq
sciq_01_06181
Where do most biochemical reactions take place?
[ "stomach", "outside of cells", "upper atmosphere", "within cells" ]
D
Most biochemical reactions take place within cells. Cells are the microscopic building blocks of organisms.
sciq
sciq_01_07553
Energy often changes between potential and what other kind of energy?
[ "realized", "kinetic", "thermal", "magnetic" ]
B
Energy conversion occurs when energy changes from one type or form of energy to another. Energy often changes between potential and kinetic energy. Energy is always conserved during energy conversions.
math_qa
mathqa_03_02994
dacid obtained 91 , 65 , 82 , 67 and 85 marks ( out of 100 ) in english , mathematics , physics , chemistry and biology . what are his average marks ?
[ "29", "78", "39", "37" ]
B
"average = ( 91 + 65 + 82 + 67 + 85 ) / 5 = 78 answer : b"
sciq
sciq_01_08452
Fuels according to the law of what, can never actually be “consumed”; it can only be changed from one form to another?
[ "expansion of energy", "difference of energy", "conservation of energy", "use of energy" ]
C
Fuels According to the law of conservation of energy, energy can never actually be “consumed”; it can only be changed from one form to another. What is consumed on a huge scale, however, are resources that can be readily converted to a form of energy that is useful for doing work. As you will see in Chapter 18 "Chemica...
sciq
sciq_01_05116
Burning fossil fuels produces air pollution and what?
[ "acid rain", "oxygen", "carbon dioxide", "liquid dioxide" ]
C
Fossil fuels—including oil, natural gas, and coal—provide most of the energy used in the world today. Burning fossil fuels produces air pollution as well as carbon dioxide that causes global climate change.
sciq
sciq_01_08063
Parasitic leeches feed off of what?
[ "tumor", "blood", "tissue", "brain" ]
B
Annelids are segmented worms such as earthworms and leeches. Annelids have a coelom, closed circulatory system, excretory system, and complete digestive system. They also have a brain. Earthworms are important deposit feeders that help form and enrich soil. Leeches are either predators or parasites. Parasitic leeches f...
sciq
sciq_01_03678
Where does the christmas tree worm live?
[ "rainforests", "Atlantic shoreline", "tropical coral reefs", "northeast coral reefs" ]
C
It is actually the Yellow Christmas tree worm. These animals are colorful, and can be red, orange, yellow, blue, and white. The Christmas tree worm lives on tropical coral reefs throughout the world. The Christmas tree worm's plumes are used for feeding and respiration. These worms use their plumes to catch plankton an...
medmcqa
medmcqa_05_00653
The following ECG with ST elevation on VI V2 is associated with the diagnosis of
[ "Hyperkalemia", "Hypokalemia", "Hyperthermia", "Hypercalcemia" ]
A
(A) Hyperkalemia # ST Elevation:> Most important cause of ST segment elevation is acute Ischemia.> Other causes are: Early repolarization Acute pericarditis: ST elevation in all leads except aVR Pulmonary embolism: ST elevation in V1 and aVR Hypothermia: ST elevation in V3-V6, II, III and aVF Hypertrophic cardiomyopath...
sciq
sciq_01_02131
Diamond is extremely hard because of the strong bonding between ______ in all directions?
[ "hydrogen atoms", "consistent atoms", "liquid atoms", "carbon atoms" ]
D
Figure 10.43 Diamond is extremely hard because of the strong bonding between carbon atoms in all directions. Graphite (in pencil lead) rubs off onto paper due to the weak attractions between the carbon layers. An image of a graphite surface shows the distance between the centers of adjacent carbon atoms. (credit left p...
sciq
sciq_01_07166
All cells undergo what during a lifetime, but when this process is out of control, cancer results?
[ "cell death", "cell mutation", "cell transition", "cell division" ]
D
Cell division is just one of the stages that all cells go through during their life. This includes cells that are harmful, such as cancer cells. Cancer cells divide more often than normal cells, and grow out of control. In fact, this is how cancer cells cause illness. In these concepts, you will read about how cells di...
sciq
sciq_01_08108
What do you call an abnormal mass formed when cells divide uncontrollably?
[ "inflammation", "infection.", "layer", "tumor" ]
D
Cells that divide uncontrollably may form a tumor, or abnormal mass of cells. Tumors may be benign or malignant. Benign tumors remain localized and generally do not harm health. Malignant tumors are cancerous. There are no limits to their growth, so they can invade and damage neighboring tissues. Cells from malignant t...
medmcqa
medmcqa_05_02837
Other name of AST:
[ "SGOT", "SGPT", "Alkaline phosphatase", "Acid phosphatase" ]
A
SGOT: Serum glutamic oxaloacetic transaminase, an enzyme that is normally present in liver and hea cells. SGOT is released into blood when the liver or hea is damaged.The blood SCOT levels are thus elevated with liver damage (for example, from viral hepatitis) or with an insult to the hea (for example, from a hea attac...
math_qa
mathqa_03_04326
in how many ways can 16 different gifts be divided among 4 children such that each child receives exactly two gifts ?
[ "16 ^ 4", "( 4 !", "16 ! / ( 2 !", "16 ! / 2 !" ]
C
total 16 different gifts , and 4 children . thus any one child gets 16 c 2 gifts , then the other child gets 14 c 2 gifts ( 16 total - 2 already given ) , then the third one gets 12 c 2 gifts , and the last child gets 10 c 2 gifts . since order in which each child gets the gift is not imp , thus , ans : 16 c 2 * 14 c 2...
sciq
sciq_01_08981
Life span is distinct from what, which means the sequence of stages a plant goes through from seed germination to seed production of the mature plant?
[ "spin cycle", "society cycle", "life cycle", "feeding cycle" ]
C
Plant Life Spans The length of time from the beginning of development to the death of a plant is called its life span. The life cycle, on the other hand, is the sequence of stages a plant goes through from seed germination to seed production of the mature plant. Some plants, such as annuals, only need a few weeks to gr...
math_qa
mathqa_03_02778
if 9 a - b = 10 b + 65 = - 12 b - 2 a , what is the value of 11 a + 11 b ?
[ "- 11", "- 5", "0", "5" ]
C
"( i ) 9 a - 11 b = 65 ( ii ) 2 a + 22 b = - 65 adding ( i ) and ( ii ) : 11 a + 11 b = 0 the answer is c ."
ARC-Easy
arc_04_00763
Which of these can only be found in a plant cell?
[ "a nucleus", "a vacuole", "a chloroplast", "a mitochondrion" ]
C
null
sciq
sciq_01_04219
What do you call the symbiotic relationship where a parasite benefits while the host is harmed?
[ "invasion", "parasitism", "symbolic damage", "hostism" ]
B
Parasitism is a symbiotic relationship in which the parasitic species benefits while the host species is harmed.
math_qa
mathqa_03_01524
if 1000 microns = 1 decimeter , and 1 , 000,000 angstroms = 1 decimeter , how many angstroms equal 1 micron ?
[ "10", "1000", "100", "0.01" ]
B
"1000 microns = 1 decimeter , and 1 , 000,000 angstroms = 1 decimeter 1000 microns = 1 , 000,000 angstroms 1 micron = 1 , 000,000 / 1,000 = 1,000 answer : b"
sciq
sciq_01_05114
What is the basic unit of computer memory?
[ "Megabyte", "Teraybte", "Bit", "byte" ]
D
Multiplicative prefixes are used for other units as well, such as computer memory. The basic unit of computer memory is the byte (b). What is the unit for one million bytes?.
sciq
sciq_01_02743
Many glasses eventually crystallize, rendering them brittle and this?
[ "molten", "powdered", "opaque", "soft" ]
C
Many glasses eventually crystallize, rendering them brittle and opaque. Modifying agents such as TiO 2 are frequently added to molten glass to reduce their tendency to crystallize. Why does the addition of small amounts of TiO2 stabilize the amorphous structure of glass?.
openbookqa
obqa_02_02435
Scientists suggest that, due to human activities, earth has lost waterways and about half of its original forest lands, endangering many animals and plants in their natural living spaces. However, human activity seems to benefit some living things, such as
[ "rats and roaches", "saunas and pools", "new phone numbers", "cotton clothing" ]
A
humans changing animal habitats usually causes harm to those animals
medmcqa
medmcqa_05_02920
Which of the following is required in the synthesis of acetylcholine -
[ "Inositol", "Carnitine", "Glycine", "Choline" ]
D
Ans. is 'd' i.e., Choline o Acetylcholine is synthesized in the cytosol of nerve terminal from acetyl-CoA and choline, in the presence of choline-O-acetyltransferase.Acetyl CoA + Cholinecholine-O-acetyltransferase---------------------Acetylcholine + CoA
math_qa
mathqa_03_00027
the difference between a two - digit number and the number obtained by interchanging the digit is 36 . what is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
[ "8", "15", "14", "12" ]
A
since the number is greater than the number obtained on reversing the digits , so the ten ' s digit is greater than the unit ' s digit . let the ten ' s and unit ' s digits be 2 x and x respectively . then , ( 10 * 2 x + x ) - ( 10 x + 2 x ) = 36 9 x = 36 x = 4 required difference = ( 2 x + x ) - ( 2 x - x ) = 2 x = 8 ...
math_qa
mathqa_03_03188
a mixture contains alcohol and water in the ratio 4 : 3 . if 5 liters of water is added to the mixture , the ratio becomes 4 : 5 . find the quality of alcohol in the given mixture .
[ "10", "8", "7.5", "6" ]
A
"let the quantity of alcohol and water be 4 x and 3 x 4 x / ( 3 x + 5 ) = 4 / 5 20 x = 4 ( 3 x + 5 ) x = 2.5 quantity of alcohol = 4 * 2.5 = 10 liters . answer is a"
openbookqa
obqa_02_04670
Some birds have adapted to their cold environment by over time evolving to have thicker feathers in order to
[ "go to space", "avoid freezing", "eat dinosaurs", "nothing" ]
B
thick feathers can be used for keeping warm
openbookqa
obqa_02_01325
Imagine a huge rabies epidemic, where all the cats in the world died, which species would over run the earth?
[ "Rodents", "Pachyderms", "Butterflys", "Homo sapiens" ]
A
as population of predators decreases , the population of prey will increase in an environment
openbookqa
obqa_02_02364
Mineral graphite could be found in places such as
[ "happy kittens", "pink candles", "wild oats", "office supplies" ]
D
pencil lead contains mineral graphite
sciq
sciq_01_00942
When food enters the stomach after a period of fasting, a drop in what initiates the conversion of pepsinogen to pepsin?
[ "calcium", "acid", "ph", "white blood cells" ]
C
produced in cells located in the stomach wall. When food enters the stomach after a period of fasting, pepsinogen is converted to its active form—pepsin—in a series of steps initiated by the drop in pH. Pepsin catalyzes the hydrolysis of peptide linkages within protein molecules. It has a fairly broad specificity but a...
sciq
sciq_01_00977
Bioluminescence is an example of what type of activity that is carried out by a cell and is precisely coordinated and controlled?
[ "reproduction", "metabolic", "respiration", "growth" ]
B
sciq
sciq_01_08312
Both androgen secretion and spermatogenesis occur continuously starting with what?
[ "mutation", "walking", "birth", "puberty" ]
D
sciq
sciq_01_10661
What system is designed to facilitate the transformation of food matter into the nutrient components that sustain organisms?
[ "tissue", "respiratory", "skeletal", "digestive" ]
D
Parts of the Digestive System The vertebrate digestive system is designed to facilitate the transformation of food matter into the nutrient components that sustain organisms. Oral Cavity The oral cavity, or mouth, is the point of entry of food into the digestive system, illustrated in Figure 34.9. The food consumed is ...
sciq
sciq_01_02953
What term is used to describe a solution in which water is the solvent?
[ "liquids solution", "hydro solution", "aqueous solution", "sediment solution" ]
C
Solutions We have previously defined solutions as homogeneous mixtures, meaning that the composition of the mixture (and therefore its properties) is uniform throughout its entire volume. Solutions occur frequently in nature and have also been implemented in many forms of manmade technology. We will explore a more thor...
medmcqa
medmcqa_05_02410
The gene coding for androgen receptors is located on
[ "Sho arm of X- chromosome", "Sho arm of Y- chromosome", "Long arm of X- chromosome", "Long arm of Y- chromosome" ]
C
C i.e. Long arm of X-Chromosome The androgen receptor is a typical member of the steroid/ thyroid family and is encoded by a gene on the long arm of X-chromosomeQ.
sciq
sciq_01_08972
What do we call the recycling of inorganic matter between living organisms and their environment?
[ "water cycle", "phosphorus cycle", "nutrient cycle", "biogeochemical cycle" ]
D
46.3 | Biogeochemical Cycles By the end of this section, you will be able to: • Discuss the biogeochemical cycles of water, carbon, nitrogen, phosphorus, and sulfur • Explain how human activities have impacted these cycles and the potential consequences for Earth Energy flows directionally through ecosystems, entering ...
ARC-Challenge
arc_04_02491
Which of these most likely has the GREATEST mass?
[ "Chicken", "Puppy", "Lizard", "Horse" ]
D
null
sciq
sciq_01_00471
Bones are the main organs of what system, which also includes cartilage and ligaments?
[ "skeletal system", "lymphatic system", "endocrine system", "digestive system" ]
A
Bones are the main organs of the skeletal system. The skeletal system also includes cartilage and ligaments.
sciq
sciq_01_11590
What type of cells does meiosis produce?
[ "mutated cells", "diploid daughter cells", "child cells", "haploid daughter cells" ]
D
Meiosis is a special type of cell division. It produces haploid daughter cells. It occurs when an organism makes gametes. Meiosis is basically mitosis times two. The original diploid cell divides twice. The first time is called meiosis I. The second time is called meiosis II. However, the DNA replicates only once. It r...
math_qa
mathqa_03_00942
company x provides bottled water to its employees in 5 liter bottles , $ 3 each . at least how many 5 l bottles must company x buy monthly , so that new contract with $ 50 fixed monthly rate and $ 1 for 20 l bottle each paid off ? ( assume that no other costs apply )
[ "15", "17", "19", "20" ]
C
let the no . of 5 liter bottles be x , so the no . of 20 l bottles will be x / 4 ( to equate the vol . ) since the total cost will be equal , 3 x = 50 + x / 4 so x = 18.18 or 19 . answer is ( c ) .
sciq
sciq_01_02217
Isobaric expansion is a process occurring without a change in what?
[ "pressure", "temperature", "energy", "direction" ]
A
isobaric expansion is a process occurring without a change in pressure.
openbookqa
obqa_02_04746
Snowy means a large amount of what?
[ "roads", "rivers", "ice particles", "winds" ]
C
snowy means a large amount of snow
sciq
sciq_01_02986
Furthermore, most of the proteins within membranes have both hydrophobic and which other regions?
[ "hydrophilic", "lymphatic", "atmospheric", "cytosolic" ]
A
math_qa
mathqa_03_04127
arjun started a business with rs . 20000 and is joined afterwards by anoop with rs . 4000 . after how many months did anoop join if the profits at the end of the year are divided equally ?
[ "3", "4", "5", "6" ]
D
suppose anoop joined after 3 months . then , 20000 * 12 = 40000 * ( 12 – x ) = > = > x = 6 . answer : d
math_qa
mathqa_03_01359
the speed at which a girl can row a boat in still water is 90 kmph . if she rows downstream , where the speed of current is 18 kmph , what time will he take to cover 330 metres ?
[ "11", "12", "13", "14" ]
A
"speed of the boat downstream = 90 + 18 = 108 kmph = 108 * 5 / 18 = 30 m / s hence time taken to cover 330 m = 330 / 30 = 11 seconds . answer : a"
medmcqa
medmcqa_05_01210
Commonest injury in blunt abdominal trauma -
[ "Kidney", "Liver", "Bladder", "Spleen" ]
D
Ans. is 'c' i.e.. Spleen
openbookqa
obqa_02_04237
Rock that has been metamorphosed will have potentially withstood this to get to that point
[ "old trees", "small mice", "large exertions", "big sneezes" ]
C
extreme heat and pressure metamorphose rock into metamorphic rock
openbookqa
obqa_02_01910
This famous mountain range in Europe came about due to
[ "rocks floating on underground water sources", "the work of an intelligent force", "the folding of numerous layers of rock", "the accumulation of soil over millions of years" ]
C
the Alps were formed by rock folding
openbookqa
obqa_02_01903
the strength of a hurricane will increase when
[ "it hits the arctic circle", "it meets a tornado", "it from South Africa to Mexico", "it travels around Antarctica" ]
C
as heat and moisture increases , the strength of a hurricane will increase
math_qa
mathqa_03_00375
find the area of trapezium whose parallel sides are 20 cm and 18 cm long , and the distance between them is 15 cm ?
[ "288", "276", "285", "299" ]
C
"area of a trapezium = 1 / 2 ( sum of parallel sides ) * ( perpendicular distance between them ) = 1 / 2 ( 20 + 18 ) * ( 15 ) = 285 cm 2 answer : c"