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math_qa
mathqa_03_01822
what is the remainder when 1234 * 6789 * 1111 is divided by 19
[ "15", "23", "7", "10" ]
D
"12345 / 19 = = > remainder = 14 678910 / 19 = = > remainder = 2 111111 / 19 = = > remainder = 18 = 14 * 2 * 18 = 504 / 19 = = > remainder = 10 answer : d"
medmcqa
medmcqa_05_00722
X-ray of a person presenting with intestinal obstruction is shown below. It is taken in which view?
[ "X-ray abdomen erect", "X-ray abdomen left lateral", "X-ray in prone position", "X-ray in right lateral decubitus" ]
A
Ans. (a) X-ray abdomen erect* The film shows X-ray abdomen erect -- with multiple air fluid levels showing small intestinal obstruction.
sciq
sciq_01_09378
Why are goose feathers preferred for stuffing by manufacturers?
[ "softness", "thickness", "multi layers build up", "smoothness" ]
A
Feathers are also used all over the world to stuff pillows, mattresses, sleeping bags, coats, and quilting. Goose feathers are preferred because they are soft. Manufacturers often mix goose feathers with down feathers to provide extra softness.
sciq
sciq_01_04200
The cytoplasm is all the contents of the cell inside the cell membrane, with the exception of what?
[ "molecules", "nucleus", "vacuole", "lysosome" ]
B
Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane , or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment. Ribosomes are the non-membrane bound organelles where ...
openbookqa
obqa_02_04155
If an organism dies then the population of that organism will what?
[ "lessen", "skyrocket", "rise", "grow" ]
A
if an organism dies then the population of that organism will decrease
sciq
sciq_01_01633
The stoichiometric coefficients indicate the relative amounts of what?
[ "trajectories and products", "reactions and products", "reactants and products", "exigencies and products" ]
C
stoichiometric coefficient : The letters a, b, c, and d where A and B are reactants, and C and D are products. The stoichiometric coefficients indicate the relative amounts of reactants and products.
sciq
sciq_01_00837
What kind of behavior occurs only after experience or practice and describes most human behaviors?
[ "inherited behavior", "practiced behavior", "innate behavior", "learned behavior" ]
D
Other than infant reflexes, human behaviors are mainly learned rather than innate behaviors. Learned behavior is behavior that occurs only after experience or practice. Did you ever teach a dog to sit on command? That’s an example of a learned behavior. The dog wasn’t born knowing that it should sit when it hears the w...
ARC-Easy
arc_04_00192
Copernicus changed the way people viewed the solar system by
[ "claiming Earth is in orbit about the Sun.", "inventing, then improving, the telescope.", "writing the theory of the infinite universe.", "showing planetary orbits are elliptical." ]
A
null
openbookqa
obqa_02_01592
Which item can be used more than once?
[ "toilet paper", "cloth pad", "tampon", "drugstore pad" ]
B
something reusable can be used more than once
medmcqa
medmcqa_05_03863
Most common cause of death in PDA is?
[ "Cardiac failure", "Respiratory failure", "Infective endaeritis", "Embolization" ]
A
Cardiac failure REF: Nelson Textbook of Paediatrics 17th edition page 1611, Manual of Cardiovascular Medicine -Brian P. Griffin Page 458 "With a PDA, congestive hea failure (CHF) can occur because of chronic left hea volume overload. In patients with death related to PDA, CHF is the most common cause" Infective endaeri...
sciq
sciq_01_08468
How does the atomic number change during beta emission?
[ "increases by two", "increases by one", "decreases by one", "stays the same" ]
B
Beta (β) decay is a more complicated process. Unlike the α-emission, which simply expels a particle, the β-emission involves the transformation of a neutron in the nucleus to a proton and an electron. The electron is then ejected from the nucleus. In the process, the atomic number increases by one while the atomic weig...
medmcqa
medmcqa_05_04234
Which of the following does not need treatment
[ "Neuroblastoma", "Burkitt's lymphoma", "T cell lymphoblastic leukemia", "AML" ]
A
Ans. a. Neuroblastoma Though all of the four malignancies in the given options should be treated, but spontaneous regression might be seen in neuroblastoma. So, the Ans. of exclusion is neuroblastoma Tumors with Spontaneous Regression (NCR MR) NeuroblastomaQ Malignant melanomaQ ChoriocarcinomaQ RetinoblastomaQ Renal ce...
ARC-Easy
arc_04_00358
Which of the following is most likely to cause water to change from one state of matter to another state of matter?
[ "increased precipitation", "the weathering of rocks", "a decrease in wind speed", "a change in air temperature" ]
D
null
openbookqa
obqa_02_03108
A sign of the spring season could be
[ "hibernation", "flip-flops", "Christmas", "heavy coats" ]
B
a new season occurs four times per year
sciq
sciq_01_04025
Tropical, temperate, continental, and polar are all examples of what?
[ "climates", "lakes", "land formations", "deserts" ]
A
Climate types are based on temperature and precipitation. A major climate type and its living things make up a biome. Climate types include tropical, temperate, continental, and polar climates.
openbookqa
obqa_02_02771
A reflective surface fogging up is
[ "reflection", "refraction", "evaporation", "condensation" ]
D
a phase change is when matter changes from one state into another state
ARC-Easy
arc_04_00617
When a plant dies, it often decomposes and becomes part of the soil. This process is one step in which cycle?
[ "lunar", "water", "carbon", "energy" ]
C
null
math_qa
mathqa_03_04019
the sum of two numbers is 56 , and one of them is 12 more than the other . what are the two numbers ?
[ "36 - 48", "22 - 34", "60 - 24", "42 - 42" ]
B
"in this problem , we are asked to find two numbers . therefore , we must let x be one of them . let x , then , be the first number . we are told that the other number is 12 more , x + 12 . the problem states that their sum is 56 : word problem = 56 the line over x + 12 is a grouping symbol called a vinculum . it saves...
sciq
sciq_01_02163
Earthworms and segmented worms belong to what phylum?
[ "annelida", "nematoda", "bryozoa", "protazoa" ]
A
The phylum Annelida is made up of segmented worms such as earthworms . Segmented worms are divided into many repeating segments. There are roughly 15,000 species of annelids. Most belong to one of three classes. A species in each class is pictured in Figure below . See The Cambrian Explosion at http://www. pbs. org/kce...
sciq
sciq_01_02943
As altitude rises, what happens to the temperature in the thermosphere?
[ "temperature decreases", "oxygen increases", "oxygen decreases", "temperature increases" ]
D
Temperature increases with altitude in the thermosphere. Surprisingly, it may be higher than 1000° C (1800° F) near the top of this layer! The Sun’s energy there is very strong. The molecules absorb the Sun’s energy and are heated up. But there are so few gas molecules that the air still feels very cold. Molecules in t...
openbookqa
obqa_02_04696
what is the speediest healer?
[ "skin", "tongue", "toes", "heart" ]
B
speed is a measure of how fast an object is moving
math_qa
mathqa_03_03975
if both 5 ^ 2 and 3 ^ 3 are factors of n x ( 2 ^ 5 ) x ( 6 ^ 2 ) x ( 7 ^ 3 ) , what is the smallest possible positive value of n ? .
[ "25", "27", "45", "75" ]
D
if both 5 ^ 2 & 3 ^ 3 are factors , then they must be present in the number . leaving rest of the prime factors and splitting 6 ^ 2 into 3 ^ 2 * 2 ^ 3 . the number is lacking 5 ^ 2 & a 3 , so that 5 ^ 2 and 3 ^ 3 is a factor . hence the smallest number is 5 ^ 2 * 3 = 75 answer : d
sciq
sciq_01_09237
The hamstrings flex the leg, whereas the quadriceps femoris have what effect?
[ "extend", "no effect", "stabilize", "contract" ]
A
The hamstrings flex the leg, whereas the quadriceps femoris extend it.
medmcqa
medmcqa_05_00485
Which among the following is increased during sleep induction ?
[ "| Acetyl choline", "| Histamine", "| Norepinephrine and serotonin", "| GABA" ]
A
Stimulation cholinergic neurons in pontine reticular formation is responsible for sleep induction. When the activity of norepinephrine and serotonin containing neurons in locus coeruleus and raphe nuclei is increased, the activity of ACH-containing neurons in the pontine reticular formation decreases, leading to wakefu...
sciq
sciq_01_05329
Snails, scallops, and squids are examples of invertebrates called what?
[ "clams", "mollusks", "orthopods", "gastropods" ]
B
Mollusks are invertebrates such as snails, scallops, and squids.
sciq
sciq_01_02332
What involves the emission of a particle and/or energy as one atom changes into another?
[ "spontaneous mutation", "enthalpy", "atomic transformation", "radioactive decay" ]
D
Radioactive decay involves the emission of a particle and/or energy as one atom changes into another. In most instances, the atom changes its identity to become a new element. There are four different types of emissions that occur.
sciq
sciq_01_00644
What are sugars broken down into in your digestive system?
[ "nicotine", "insulin", "glucose", "starch" ]
C
Sugars are small, simple carbohydrates. They are found in foods such as milk and fruit. Sugars in foods such as these are broken down by your digestive system to glucose, the simplest of all sugars. Glucose is taken up by cells for energy.
sciq
sciq_01_03975
Organisms such as goldfish that can tolerate only a relatively narrow range of salinity are referred to as what?
[ "saline intolerant", "stenohaline", "trichina", "antisaline" ]
B
Osmoregulators and Osmoconformers Persons lost at sea without any fresh water to drink are at risk of severe dehydration because the human body cannot adapt to drinking seawater, which is hypertonic in comparison to body fluids. Organisms such as goldfish that can tolerate only a relatively narrow range of salinity are...
sciq
sciq_01_08436
Spiders use the hydrostatic pressure generated by an open type of what anatomical system to extend their legs?
[ "respiratory", "circulatory", "vascular", "pulmonary" ]
B
ARC-Easy
arc_04_01839
A student needs to find the mass of an atom. The numbers of which atomic particles determines the mass of the atom?
[ "only its protons", "only its electrons", "both its protons and neutrons", "both its neutrons and electrons" ]
C
null
sciq
sciq_01_08654
The sum of the superscripts in an electron configuration is equal to the number of electrons in that atom, which is in turn equal to what number?
[ "atomic number", "shell number", "orbital number", "metallic number" ]
A
Electron configuration notation eliminates the boxes and arrows of orbital filling diagrams. Each occupied sublevel designation is written followed by a superscript that is the number of electrons in that sublevel. For example, the hydrogen configuration is 1 s 1 , while the helium configuration is 1 s 2 . Multiple occ...
sciq
sciq_01_05785
What kind of radiation is observed in honeycreeper birds?
[ "spontaneous", "adaptive", "symbiotic", "destructive" ]
B
Figure 18.13 The honeycreeper birds illustrate adaptive radiation. From one original species of bird, multiple others evolved, each with its own distinctive characteristics.
openbookqa
obqa_02_03102
Which of these items plays an integral role in the survival of many types of flora?
[ "bee", "cat", "dog", "mouse" ]
A
A bee is a pollinating animal
math_qa
mathqa_03_00304
nhai employs 100 men to build a highway of 2 km in 50 days working 8 hours a day . if in 25 days , they completed 1 / 3 part of work . than how many more employees should nhai hire to finish it in time working 10 hours a day ?
[ "55", "60", "70", "50" ]
B
explanation : the given problem can be written in a tabular form like below : - men days hour work planned 100 50 8 1 actual 100 25 8 1 / 3 remaining ? 25 10 2 / 3 we can apply chain rule now . total men required to complete the remaining work = 100 × ( 25 / 25 ) × ( 8 / 10 ) × ( 2 / 3 ) / ( 1 / 3 ) = 160 . so addition...
ARC-Challenge
arc_04_02314
The Big Bang theory states that the universe
[ "is contracting.", "has no beginning.", "started as a single mass.", "is constantly forming hydrogen." ]
C
null
math_qa
mathqa_03_01719
two numbers a and b are such that the sum of 7 % of a and 4 % of b is two - third of the sum of 6 % of a and 8 % of b . find the ratio of a : b .
[ "2 : 1", "1 : 2", "4 : 9", "1 : 1" ]
C
"explanation : 7 % of a + 4 % of b = 2 / 3 ( 6 % of a + 8 % of b ) 7 a / 100 + 4 b / 100 = 2 / 3 ( 6 a / 100 + 8 b / 100 ) ⇒ 7 a + 4 b = 2 / 3 ( 6 a + 8 b ) ⇒ 21 a + 12 b = 12 a + 16 b ⇒ 9 a = 4 b ⇒ ab = 4 / 9 ⇒ a : b = 4 : 9 answer : option c"
openbookqa
obqa_02_03953
kinetics change stored energy into motion and
[ "snacks", "naps", "kites", "warmth" ]
D
moving changes stored energy into motion and heat
math_qa
mathqa_03_04960
we bought 85 hats at the store . blue hats cost $ 6 and green hats cost $ 7 . the total price was $ 530 . how many green hats did we buy ?
[ "a", "b", "c", "d" ]
B
let b be the number of blue hats and let g be the number of green hats . b + g = 85 . b = 85 - g . 6 b + 7 g = 530 . 6 ( 85 - g ) + 7 g = 530 . 510 - 6 g + 7 g = 530 . g = 530 - 510 = 20 . the answer is b .
openbookqa
obqa_02_01581
A person who is unable to hunt for nourishment may still survive and even thrive if they
[ "harvest human organs", "burn crops", "purchase produce", "spend time alone" ]
C
humans eat crops
sciq
sciq_01_08576
What harmful substance must not be drained into s storm sewer?
[ "alcohol", "debris", "water runoff", "motor oil" ]
D
People may dispose of harmful substances incorrectly. For example, motor oil must not be drained into a storm sewer.
ARC-Easy
arc_04_01602
Which force produces energy as heat?
[ "pull", "gravity", "friction", "magnetic" ]
C
null
sciq
sciq_01_11251
In adaptive radiation, what is the name of the initial species that then subsequently becomes multiple other ones?
[ "pioneer", "Mother", "father", "founder" ]
D
In some cases, a population of one species disperses throughout an area, and each finds a distinct niche or isolated habitat. Over time, the varied demands of their new lifestyles lead to multiple speciation events originating from a single species, which is called adaptive radiation. From one point of origin, many ada...
openbookqa
obqa_02_02720
Some caterpillars use camouflage to look like
[ "Anger", "poop", "love", "Sarcastic" ]
B
An example of camouflage is when something has the same color as its environment
sciq
sciq_01_08032
Compared to red light, blue light has a shorter what?
[ "absorption", "wavelength", "gravity", "life span" ]
B
Blue light has a shorter wavelength than red light. Which color has the higher frequency? Which moves faster in a vacuum?.
openbookqa
obqa_02_02785
A yard can become a changed environment when
[ "crows show up", "humans see it", "worms live there", "vegetables are farmed" ]
D
farming changes the environment
math_qa
mathqa_03_00265
it takes joey the postman 1 hours to run a 7 mile long route every day . he delivers packages and then returns to the post office along the same path . if the average speed of the round trip is 8 mile / hour , what is the speed with which joey returns ?
[ "11", "12", "13", "8" ]
D
"let his speed for one half of the journey be 7 miles an hour let the other half be x miles an hour now , avg speed = 8 mile an hour 2 * 7 * x / 7 + x = 8 14 x = 8 x + 56 = > x = 8 d"
medmcqa
medmcqa_05_01740
Hormonal vitamin is-
[ "Niacin", "Pyridoxin", "Vitamin D", "Riboflavin" ]
C
Ans. is 'c' i.e.. Vitamin D o Active form of vitamin D i.e. 1-25 dihydroxy-cholecalciferol is a vitamin produced in kidney,o It acts on intranuclear receptors to regulate gene expressions (transcription factors).
medmcqa
medmcqa_05_01060
Which tract controls the skilled voluntary movements?
[ "Lateral coicospinal tract", "Tectospinal tract", "Rubrospinal tract", "Reticulospinal tract" ]
A
Lateral coicospinal tract REF: Ganong's 22"' ed chapter 12 "The lateral coicospinal tract is concerned with skilled movements" See APPENDIX-15 for details
math_qa
mathqa_03_01124
what is the least value of x , so that 2 x 5475 is divisible by 9
[ "7", "8", "4", "3" ]
C
"explanation : the sum of the digits of the number is divisible by 9 . then the number is divisible by 9 . 2 + x + 5 + 4 + 7 + 5 = 23 + x least value of x may be ' 4 ' , so that the total 23 + 4 = 27 is divisible by 9 . answer : option c"
math_qa
mathqa_03_03139
by selling an article at rs . 400 , a profit of 60 % is made . find its cost price ?
[ "228", "267", "287", "250" ]
D
"sp = 400 cp = ( sp ) * [ 100 / ( 100 + p ) ] = 400 * [ 100 / ( 100 + 60 ) ] = 400 * [ 100 / 160 ] = rs . 250 answer : d"
openbookqa
obqa_02_02221
Earth is warmed mostly by a large yellow dwarf star that is
[ "hollow", "local", "furthest", "dark" ]
B
the Sun is the star that is closest to Earth
medmcqa
medmcqa_05_00695
Sulfur of cysteineare not used/ utilized in the body for the following process/product-
[ "Help in the conversion of cyanide to thiocyanate", "Thiosulfate formation", "Introduction of sulphur in methionine", "Disulfide bond formation between two adjacent peptide." ]
C
Methionine is an essential amino acid, so it cannot besynthesized from Cysteine.- But Sulfur of cysteine is donated by sulfur ofmethionine.- This is called transsulfuration reaction.- PLP is the coenzyme of transrulfuration.- The reaction is catalyzed by Cystathionine betaSynthase and Cystathionase enzyme
openbookqa
obqa_02_01159
What is an example of combining
[ "adding H2O to water", "pouring NaCl into salt", "adding carbon dioxide to CO2", "blending eggs into cake batter" ]
D
An example of combining two substances is pouring one substance into the other substance
sciq
sciq_01_09143
Categorized based on how they produce their mrna using the baltimore classification method, what consist of a nucleic acid core surrounded by a protein capsid with or without an outer lipid envelope?
[ "viruses", "parasites", "bacteria", "amphibians" ]
A
CHAPTER SUMMARY 21.1 Viral Evolution, Morphology, and Classification Viruses are tiny, acellular entities that can usually only be seen with an electron microscope. Their genomes contain either DNA or RNA—never both—and they replicate using the replication proteins of a host cell. Viruses are diverse, infecting archaea...
math_qa
mathqa_03_01515
a car traveled 448 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city . if the car traveled 6 fewer miles per gallon in the city than on the highway , how many miles per gallon did the car travel in the city ?
[ "14", "18", "21", "22" ]
B
"let the speed in highway be h mpg and in city be c mpg . h = c + 6 h miles are covered in 1 gallon 462 miles will be covered in 462 / h . similarly c miles are covered in 1 gallon 336 miles will be covered in 336 / c . both should be same ( as car ' s fuel capacity does not change with speed ) = > 336 / c = 448 / h = ...
medmcqa
medmcqa_05_04457
Which of the following is not a recognized etiology of the disease shown below ?
[ "High-dose radiation", "Human herpes virus-8 (HHV-8)", "HIV", "Hereditary" ]
D
The slide shows clusters of plasma cell., diagnostic of myeloma. Although multiple myeloma has been reported in some cases of first degree relatives and identical twins, no evidence for hereditary passage of disease exists. Radiation (A) has been shown to increase the risk for multiple myeloma. Farmers using herbicide...
sciq
sciq_01_01121
What nervous tissue cells play a supporting role to neurons?
[ "axial cells", "reissner cells", "mammalian cells", "glial cells" ]
D
Glial Cells Glial cells, or neuroglia or simply glia, are the other type of cell found in nervous tissue. They are considered to be supporting cells, and many functions are directed at helping neurons complete their function for communication. The name glia comes from the Greek word that means “glue,” and was coined by...
sciq
sciq_01_03586
Matching donor and recipient blood types is important because different blood types have different types of what?
[ "antibodies", "coagulants", "charges", "antigens" ]
A
The ABO blood group system is important if a person needs a blood transfusion. A blood transfusion is the process of putting blood or blood products from one person into the circulatory system of another person. The blood type of the recipient needs to be carefully matched to the blood type of the donor. That's because...
medmcqa
medmcqa_05_04373
Concept of multipurpose workers was given by
[ "Mudaliar committee", "Srivastava committee", "Kaar Singh committee", "Mukherjee committee" ]
C
Ans. is 'c' i.e., Kaar Singh committee
sciq
sciq_01_00728
What light-producing process occurs when a substance absorbs shorter-wavelength ultraviolet light and then gives off the energy as visible light?
[ "fluorescence", "luminescence", "candescence", "resistance" ]
A
A fluorescent light bulb produces visible light by fluorescence. Fluorescence occurs when a substance absorbs shorter-wavelength ultraviolet light and then gives off the energy as visible light. The compact fluorescent light bulb (CFL) in the Figure below contains mercury gas that gives off ultraviolet light when elect...
sciq
sciq_01_09071
What is the common term for erythrocytesare, specialized cells that circulate delivering oxygen to cells and are formed from stem cells in the bone marrow?
[ "plateletes", "white blood cells", "monocytes", "red blood cells" ]
D
Red Blood Cells Red blood cells, or erythrocytes (erythro- = “red”; -cyte = “cell”), are specialized cells that circulate through the body delivering oxygen to cells; they are formed from stem cells in the bone marrow. In mammals, red blood cells are small biconcave cells that at maturity do not contain a nucleus or mi...
math_qa
mathqa_03_03813
maxwell leaves his home and walks toward brad ' s house at the same time that brad leaves his home and runs toward maxwell ' s house . if the distance between their homes is 60 kilometers , maxwell ' s walking speed is 4 km / h , and brad ' s running speed is 6 km / h , what is the distance traveled by brad ?
[ "16", "36", "20", "24" ]
B
"time taken = total distance / relative speed total distance = 60 kms relative speed ( opposite side ) ( as they are moving towards each other speed would be added ) = 6 + 4 = 10 kms / hr time taken = 60 / 10 = 6 hrs distance traveled by brad = brad ' s speed * time taken = 6 * 6 = 36 kms . . . answer - b"
openbookqa
obqa_02_01183
What would burn more quickly?
[ "wet log", "green leaves", "soggy tree trunk", "sun dried branches" ]
D
dry wood easily burns
sciq
sciq_01_04471
Refraction happens when light bends from doing what in a new medium?
[ "changing speed", "changing brightness", "changing color", "changing trajectory" ]
A
Facts are true. Data, gathered correctly, is factual. Facts and data are not subject to opinion or bias.
openbookqa
obqa_02_01196
Flowers start die when
[ "They are pulled from the ground", "They are sung too", "They are given water", "They have lots of sunlight" ]
A
decomposition is when a decomposer breaks down dead organisms
sciq
sciq_01_07738
Behaviors are responses to stimuli. they can either be instinctual/innate behaviors, which are not influenced by the environment, or learned behaviors, which are influenced by this?
[ "environmental changes", "inheritance", "spontaneous mutation", "osmosis" ]
A
45.7 Behavioral Biology: Proximate and Ultimate Causes of Behavior Behaviors are responses to stimuli. They can either be instinctual/innate behaviors, which are not influenced by the environment, or learned behaviors, which are influenced by environmental changes. Instinctual behaviors include mating systems and metho...
openbookqa
obqa_02_01410
A small creek becomes a rushing river after years of heavy rains in a particular location. In addition to the larger water source, there are also greater
[ "rock fights", "sheep herds", "bunny rolls", "speaking deer" ]
B
as the available water in an environment increases , the populations of organisms in that environment will increase
medmcqa
medmcqa_05_04129
Nitrosoureas used in the treatment of cancer are-
[ "a) Carmustine", "5FU", "Methotrexate", "Cisplatin" ]
A
Ans. is 'a' i.e., Carmustine Nitrosoureaso Nitrosoureas (Lomustine and carmustine) are highly lipid soluble alkylating agents - cross blood - brain barrier - Effective in meningeal leukaemias and brain tumours,o Nitrosoureas are highly lipid soluble and can cross blood brain barrier - used in brain tumors like gliomas....
medmcqa
medmcqa_05_01450
Which of the following is NOT a complication of bronchiectasis :
[ "Lung abscess", "Lung cancer", "Amylodosis", "Empyema" ]
B
Answer is B (Lung cancer): Bronchiectasis is not a premalignant condition. Complications of Bronchiectasis: Massive hemoptysis. Empyema with or without bronchopleural fistula. Purulent pericarditis. Respiratory failure with chronic cor pulmonale. Metastatic abscesses in brain and bones. Secondary amyloidosis with nephr...
sciq
sciq_01_09754
When bacteria are destroyed by leukocytes, what are released into the blood?
[ "pyrogens", "sporozoans", "carcinogens", "proteins" ]
A
When bacteria are destroyed by leukocytes, pyrogens are released into the blood. Pyrogens reset the body’s thermostat to a higher temperature, resulting in fever. How might pyrogens cause the body temperature to rise?.
ARC-Easy
arc_04_02012
Which pair of English and metric units has most nearly the same value?
[ "liter and quart", "gram and ounce", "kilogram and pound", "kilometer and mile" ]
A
null
math_qa
mathqa_03_04434
there are 660 male and female participants in a meeting . half the female participants and one - quarter of the male participants are democrats . one - third of all the participants are democrats . how many of the democrats are female ?
[ "75", "110", "125", "175" ]
B
"female = x male = 660 - x x / 2 + 660 - x / 4 = 1 / 3 * ( 660 ) = 220 x = 220 x / 2 = 110 is supposed to be the answer m is missing something correct option b"
openbookqa
obqa_02_04513
A lone fox is searching for its next meal in a meadow that used to be bountiful with food. This season, though, rabbits have all been eaten up and the field is dry and barren. The fox may
[ "fly", "say something", "hibernate", "starve" ]
D
lack of food causes starvation
sciq
sciq_01_06173
What force pulls object downwards to the earth?
[ "motion", "gravity", "kinetic energy", "momentum" ]
B
Gravity near the Earth pulls an object downwards toward the surface of the Earth with an acceleration of . In the absence of air resistance, all objects will fall with the same acceleration. The letter is used as the symbol for the acceleration of gravity. When talking about an object's acceleration, whether it is due ...
medmcqa
medmcqa_05_04856
Fenestration operation is which type of tympanoplasty-
[ "Type-2", "Type-3", "Type-4", "Type-5" ]
D
Ans. is 'd' i.e., Type-5 Types of tympanoplastyo Wullstein classified tympanoplasty into five typesTypel: Defect is perforation of tympanic membrane which is repaired with a graft. It is also called myringoplasty.Type II: Defect is perforation of tympanic membrane with erosion of malleus. Graft is placed on the incus o...
math_qa
mathqa_03_00096
in a company , 48 percent of the employees are men . if 60 percent of the employees are unionized and 70 percent of these are men , what percent of the non - union employees are women ?
[ "85 %", "80 %", "75 %", "70 %" ]
A
"the percent of employees who are unionized and men is 0.7 * 0.6 = 42 % the percent of employees who are unionized and women is 60 - 42 = 18 % 52 % of all employees are women , so non - union women are 52 % - 18 % = 34 % 40 % of all employees are non - union . the percent of non - union employees who are women is 34 % ...
medmcqa
medmcqa_05_02632
Metastasis of ca buccal mucosa goes to -
[ "Regional lymph node", "Liver", "Heart", "Brain" ]
A
"Tumors in this area have a propensity to spread locally and to metastasize to regional lymphatics."- Schwartz Also know Lymphatic metastasis of Buccal ca go to submandibular and later upper jugular nodes. - Dhingra 4/e MC type of Buccal ca → Squamous cell ca Commonest site of origin → angle of mouth or the line of oc...
sciq
sciq_01_08848
Enthalpy changes are measured by using what?
[ "calorimetry", "fluorescence", "inversion", "infraction" ]
A
Enthalpy changes are measured by using calorimetry.
ARC-Easy
arc_04_01694
A strawberry farmer finds that, after a hard freeze, some of his strawberries are still alive. Which best explains why these strawberries were able to survive?
[ "They have larger leaves to protect the fruit than the other strawberries.", "They have different genetic variations that cause them to be more resistant to cold temperatures.", "They are able to reproduce more quickly than the other strawberries.", "The color of the strawberries is darker, and they maintain ...
B
null
medmcqa
medmcqa_05_00879
Flumazenilis
[ "Benzodiazepine antagonist", "Benzodiazepine agonist", "Melatonin receptor agonist", "GABA analogue" ]
A
(Benzodiazepine antagonist) (399-KDT6th)* Flumazenil - Benzodiazepine antagonistUses - (i) To reverse BZD anaesthesia (ii) BZD overdose* Melatonin receptor agonist - Ramelteon
math_qa
mathqa_03_00568
what is the sum of the greatest common factor and the lowest common multiple of 16 and 36 ?
[ "148", "222", "144", "157" ]
A
"prime factorization of the given numbers 16 = 2 ^ 4 36 = 2 ^ 2 * 3 * 2 greatest common factor = 2 ^ 2 = 4 lowest common multiple = 2 ^ 4 * 3 ^ 2 = 144 sum = 4 + 144 = 148 answer a"
sciq
sciq_01_10725
What does the structure of a protein start with?
[ "dna acids", "rna acids", "amino acids", "organism acids" ]
C
Protein Structure. The structure of a protein starts with its sequence of amino acids. What determines the secondary structure of a protein? What are two types of secondary protein structure?.
math_qa
mathqa_03_03753
if k ^ 3 is divisible by 84 , what is the least possible value of integer k ?
[ "36", "42", "48", "56" ]
B
"k ^ 3 = 84 * x = 2 ^ 2 * 3 * 7 * x the factors of k must at minimum include 2 * 3 * 7 = 42 . the answer is b ."
medmcqa
medmcqa_05_02128
Anaesthetic that has a smooth induction is :
[ "Diethyl ether", "Isoflurane", "N2O", "Halothane" ]
D
Halothane and sevoflurane have smooth induction, so these are preferred agents for anesthesia in children.
sciq
sciq_01_06183
Through which process does water from the oceans enter the atmosphere?
[ "oxidation", "perspiration", "evaporation", "absorption" ]
C
openbookqa
obqa_02_04687
Which of these live on land as adults?
[ "tiger sharks", "electric eels", "fire-bellied toads", "catfish" ]
C
adult amphibians live on land
sciq
sciq_01_03650
Gall bladder removal surgery does not seriously affect digestion because ______ is still being produced.
[ "plasma", "bile", "saliva", "blood" ]
B
Note Surgical removal is often advised for a gallbladder that becomes infected, inflamed, or perforated. This surgery does not seriously affect digestion because bile is still produced.
openbookqa
obqa_02_01334
The moon looks different in different parts of
[ "April", "today", "this week", "2018" ]
A
the phases of the Moon change the appearance of the Moon
sciq
sciq_01_11280
What type of pressure may build up inside the cell when water moves into a cell by osmosis?
[ "osmotic pressure", "pleasurable pressure", "transverse pressure", "impervious pressure" ]
A
When water moves into a cell by osmosis, osmotic pressure may build up inside the cell. If a cell has a cell wall, the wall helps maintain the cell’s water balance. Osmotic pressure is the main cause of support in many plants. When a plant cell is in a hypotonic environment, the osmotic entry of water raises the turgor...
math_qa
mathqa_03_01178
when working alone , painter w can paint a room in 2 hours , and working alone , painter x can paint the same room in a hours . when the two painters work together and independently , they can paint the room in 3 / 4 of an hour . what is the value of a ?
[ "3 / 4", "1 [ 1 / 5 ]", "1 [ 2 / 5 ]", "1 [ 3 / 4 ]" ]
B
"rate * time = work let painter w ' s rate be w and painter x ' s rate be x r * t = work w * 2 = 1 ( if the work done is same throughout the question then the work done can be taken as 1 ) = > w = 1 / 2 x * a = 1 = > x = 1 / a when they both work together then their rates get added up combined rate = ( w + x ) r * t = ...
sciq
sciq_01_05100
Lobsters are what kind of food source?
[ "sauropod", "mollusc", "arthropod", "combination" ]
C
Lobsters are one kind of arthropod food source.
ARC-Challenge
arc_04_02743
Which of the following characteristics of an individual wolf is most affected by its environment?
[ "the size of its feet", "the color of its eyes", "the shape of its ears", "the condition of its fur" ]
D
null
openbookqa
obqa_02_04787
The Norwegian government maintains a special storage chamber 800 miles from the Arctic Circle for use in the event of a man-made or natural disaster. The storage structure is built in Arctic permafrost and holds
[ "seeds that are growing now", "seeds for the Arctic animals", "seeds that spread the permafrost", "preserved seeds for reproducing edible crops" ]
D
arctic animals live in an arctic environment
medmcqa
medmcqa_05_03084
Primary Oocyte remains in ovary in which stage
[ "Metaphase", "Anaphase", "Interphase", "Prophase" ]
D
Prophase
math_qa
mathqa_03_00605
what is the sum of mean and median of 17 , 45 , 59 , 113 , 76 , 95 , 59 , 35 , 1236 ?
[ "50.2", "45.8", "54.7", "61.8" ]
C
mean = ( 17 + 45 + 59 + 113 + 76 + 95 + 59 + 35 + 12 + 36 ) / 10 = 547 / 10 = 54.7 answer is c
math_qa
mathqa_03_01476
what is 15 percent of 54 ?
[ "7.3", "8.1", "9.5", "10.2" ]
B
"( 15 / 100 ) * 54 = 8.1 the answer is b ."
openbookqa
obqa_02_02710
Kool-aid is a mix of what items as a solution?
[ "sugar candy from store", "water fluid within a sugar casing", "soda pop within a can", "sweets grains and flavors dissolved in liquid base of water" ]
D
a solution is made of one substance dissolved in another substance
ARC-Easy
arc_04_01444
When astronauts walked on the Moon, they used weighted boots to help them walk due to the lower gravitational pull. What difference between Earth and the Moon accounts for the difference in gravity?
[ "density", "diameter", "mass", "volume" ]
C
null
ARC-Challenge
arc_04_02207
Why do areas in the middle of a large continent generally have more extreme differences in temperature than areas near the coastline?
[ "There are generally more clouds near the oceans.", "Landlocked areas are usually at a lower altitude than coastline areas.", "Coastlines are usually surrounded by mountains that block air masses.", "Oceans change temperature slowly and regulate the temperature of nearby land." ]
D
null
medmcqa
medmcqa_05_02931
Direct Coomb's test detects:
[ "Antibodies attached to RBC Surface", "Antibodies in the serum", "Antigens attached to RBC Surface", "Antigens in the serum" ]
A
Answer is A (Antibodies attached to RBC Surface) Direct Coomb's test detects IgG Antibodies (or complements) attached to the surface of RBCs. Indirect Coomb's test detects IgG antibodies in the serum (e.g. Anti-D Antibodies).