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7.76k
sciq
sciq_01_06967
What can be described in terms of size, density, and distribution?
[ "habitats", "populations", "dimensions", "biomes" ]
B
Populations can be described in terms of size, density, and distribution. Population growth may be exponential or logistic. The age-sex structure of a population affects the rate of population growth.
ARC-Challenge
arc_04_02288
The weight of an object can change even when the mass stays the same. Which statement correctly identifies a relationship between mass and weight?
[ "The weight of an object depends on its mass and its volume.", "Gravity affects the weight of an object but not its mass.", "The mass of an object depends on its weight and size.", "Magnetic fields can affect mass but not weight." ]
B
null
sciq
sciq_01_04454
Found in cord blood and other sources, what kind of cells hold the promise of renewing and repairing body tissues?
[ "red blood cells", "white blood cells", "stem cells", "neurons" ]
C
Stem Cell Research Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, whic...
sciq
sciq_01_05217
As a diver descends, the increase in pressure causes the body’s air pockets in the ears and lungs to do what?
[ "heat up", "compress", "blow up", "expand" ]
B
from the atmosphere at sea level. As a diver descends, the increase in pressure causes the body’s air pockets in the ears and lungs to compress; on the ascent, the decrease in pressure causes these air pockets to expand, potentially rupturing eardrums or bursting the lungs. Divers must therefore undergo equalization by...
math_qa
mathqa_03_04586
a circular garden is surrounded by a fence of negligible width along the boundary . if the length of the fence is 1 / 5 of th area of the garden . what is the radius of the circular garden ?
[ "1", "2", "10", "8" ]
C
"as per the question - - width is negligible now , let l be the length of the fence = 2 pir l = 1 / 5 ( pir ^ 2 ) pir ^ 2 = 10 pir r = 10 answer : c"
sciq
sciq_01_11234
What is a type of cell that supports neurons and maintains their environment?
[ "neurofilament cell", "interneuron cell", "glial cell", "axon cell" ]
C
Figure 35.7 Glial cells support neurons and maintain their environment. Glial cells of the (a) central nervous system include oligodendrocytes, astrocytes, ependymal cells, and microglial cells. Oligodendrocytes form the myelin sheath around axons. Astrocytes provide nutrients to neurons, maintain their extracellular e...
ARC-Easy
arc_04_00632
Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide?
[ "volcanic emissions", "combustion of fossil fuels", "destruction of tropical forests", "mining and mineral extraction" ]
B
null
medmcqa
medmcqa_05_03040
If one variable is given then you can find another variable by
[ "Coefficient of variation", "Coefficient of correlation", "coefficient of regression", "coefficient of determination" ]
C
Regression Analysis *Regression analysis is a mathematical model to describe the effect of 21 Independent variable on a dependent variable *Linear regression describes effect of one independent variable on a dependent variable *Multiple linear regression describes effect A too or more independent variable on a dependen...
openbookqa
obqa_02_04451
Animals help with seed dispersal due to the seeds from the fruit they eat being
[ "expelled via excrement", "smiled", "expelled from school", "kicked" ]
A
An example of seed dispersal is is an animal gathering seeds
math_qa
mathqa_03_00959
the sum of the ages of 5 children born at the intervals of 3 year each is 40 year . what is the age of the eldest child ?
[ "14 year", "8 year", "10 year", "none of these" ]
A
"solution let the ages of the children be x , ( x + 3 ) , ( x + 6 ) , ( x + 9 ) and ( x + 12 ) year . then , x + ( x + 3 ) + ( x + 6 ) + ( x + 9 ) + ( x + 12 ) = 40 â ‡ ” 5 x = 10 â ‡ ” x = 2 . â ˆ ´ age of the youngest child = x + 12 = 2 + 12 = 14 years . answer a"
openbookqa
obqa_02_03905
which of these would have a better chance at thriving?
[ "a woman starving every day", "mosquito on mars in space", "a man without money to eat", "a spider with an abundance of prey in web" ]
D
a spider web is used to capture food by spiders
sciq
sciq_01_01955
What do jellyfish lack in their nervous system?
[ "Cortex", "Response", "stimulus", "true brain" ]
D
Nervous systems throughout the animal kingdom vary in structure and complexity, as illustrated by the variety of animals shown in Figure 35.2. Some organisms, like sea sponges, lack a true nervous system. Others, like jellyfish, lack a true brain and instead have a system of separate but connected nerve cells (neurons)...
math_qa
mathqa_03_02289
the population of a town is 10000 . it increases annually at the rate of 27 % p . a . what will be its population after 2 years ?
[ "14000", "14400", "16129", "14600" ]
C
"formula : 10000 × 127 / 100 × 127 / 100 = 16129 answer : c"
sciq
sciq_01_01889
Nails cover the tips of what?
[ "fingers and lips", "ribs and nerves", "fingers and toes", "lips and teeth" ]
C
Nails are similar to claws in other animals. They cover the tips of fingers and toes. Fingernails and toenails both grow from nail beds. As the nail grows, more cells are added at the nail bed. Older cells get pushed away from the nail bed and the nail grows longer. There are no nerve endings in the nail. Otherwise cut...
sciq
sciq_01_06802
In recent years, it has been hypothesized that molecules in the environment also act as?
[ "endocrine disruptors", "catalysts", "pathogens", "homeostasis disruptors" ]
A
sciq
sciq_01_11092
In the field of biodiversity, "richness" and "abundance" are used to describe different what?
[ "densities", "water sources", "nutrients", "species" ]
D
Biodiversity, Species Richness, and Relative Species Abundance Biodiversity describes a community’s biological complexity: it is measured by the number of different species (species richness) in a particular area and their relative abundance (species evenness). The area in question could be a habitat, a biome, or the e...
ARC-Easy
arc_04_01407
Which of the following is the main role of flowers found on most flowering plants?
[ "to take in air", "to produce seeds", "to absorb nutrients", "to protect the stem" ]
B
null
ARC-Easy
arc_04_00096
When someone plays the flute, sound is produced because the air in the flute is
[ "hot.", "neutral.", "vibrating.", "vaporizing." ]
C
null
openbookqa
obqa_02_03658
Moles are underground a lot of the time, and since few animals live there, they are unlikely to be
[ "near worms", "killed by others", "dirty", "in dirt" ]
B
earthworms create tunnels in soil
ARC-Easy
arc_04_00375
Which item is designed to change electrical energy into heat energy?
[ "Alarm clock", "Hand dryer", "Fan", "Telephone" ]
B
null
openbookqa
obqa_02_01148
If you plug this into an outlet, current will flow through it.
[ "sword tip", "rubber", "plastic", "air." ]
A
sending electricity through a conductor causes electric current to flow through that conductor
openbookqa
obqa_02_01456
A pile of mulch is broken down and when searching for the culprit, a gardener notes
[ "wriggling organisms", "writing organisms", "large trees", "wild fires" ]
A
decomposer is a kind of role in an ecosystem
sciq
sciq_01_02611
What is the largest organelle in a eukaryotic cell?
[ "nucleus", "vacuole", "ribosome", "mitochondria" ]
A
The nucleus is the largest organelle in a eukaryotic cell. It contains most of the cell’s DNA. DNA, in turn, contains the genetic code. This code “tells” the cell which proteins to make and when to make them. You can see a diagram of a cell nucleus in Figure below . Besides DNA, the nucleus contains a structure called ...
sciq
sciq_01_08121
What kind of energy does pyruvate have a lot of?
[ "nuclear", "gravitational", "chemical", "thermal" ]
C
Pyruvate still contains a great deal of chemical energy. In fact, two pyruvate molecules contain most of the chemical energy from the original glucose molecule. If oxygen is present, pyruvate enters the mitochondria for complete breakdown by the Krebs Cycle and electron transport chain. If oxygen is not present, cells ...
sciq
sciq_01_04569
Prokaryotes are successful because of the ________ of reproduction in favorable environments
[ "order", "cycle", "speed", "volume" ]
C
openbookqa
obqa_02_02984
What might have more radiation?
[ "cats", "grass", "water", "cigarettes" ]
D
radiation is when heat is transferred through waves
openbookqa
obqa_02_03846
A hot stove can burn
[ "the sun", "a stone monument", "your elbow", "diamonds" ]
C
if a body part was burned then that body part was exposed to a lot of heat energy
openbookqa
obqa_02_03763
if a habitat is destroyed then that habitat
[ "is clean", "is smelly", "is super", "is gone forever" ]
D
if a habitat is destroyed then that habitat can not support animals
sciq
sciq_01_03781
What characteristic of reptile eggs allows them to be laid on land instead of in water?
[ "they are amniotic", "they are dry", "they are circular", "they trap gas" ]
A
Reptile eggs are amniotic, so they can be laid on land instead of in water.
ARC-Easy
arc_04_01015
All the ponds in an area dried up during a drought. The population of which of the following animals that live in the area is most affected by the drought?
[ "deer", "frog", "hawk", "squirrel" ]
B
null
medmcqa
medmcqa_05_03659
Which one of the following drug is a Corticosteroid Synthesis Inhibitor?
[ "Metyrapone", "Finasteride", "Flutamide", "Mifepristone" ]
A
(A) Metyrapone [?]METYRAPONE is an inhibitor of endogenous adrenal corticosteroid synthesis used in the treatment of hypercortocolism.oMechanism of action: Selectively inhibits11-b-hydroxylase, which converts 11-deoxycortisol to cortisol in the terminal reaction of the glucocorticoid biosynthetic pathway.oBecause of th...
math_qa
mathqa_03_04594
in a fuel station the service costs $ 1.75 per car , every liter of fuel costs 0.65 $ . assuming that a company owns 12 cars and that every fuel tank contains 56 liters and they are all empty , how much money total will it cost to fuel all cars ?
[ "320.8 $", "387.8 $", "420.8 $", "457.8 $" ]
D
"total cost = ( 1.75 * 12 ) + ( 0.65 * 12 * 56 ) = 457.8 hence answer will be ( d )"
sciq
sciq_01_10926
What is named after the type of enzyme they interact with in the cell?
[ "nitrogen proteins", "receptor proteins", "function proteins", "oxygen proteins" ]
B
In eukaryotic cells, most of the intracellular proteins that are activated by a ligand binding to a receptor protein are enzymes. Receptor proteins are named after the type of enzyme that they interact with inside the cell. These enzymes include G proteins and protein kinases, likewise there are G-protein-linked recept...
openbookqa
obqa_02_04029
What provides the energy to open a doorknob?
[ "you", "a ghost's hand", "alloys", "electricity" ]
A
a simple machine requires mechanical energy to function
openbookqa
obqa_02_04482
Which is hotter?
[ "the snow on one's car", "a recently used iron", "a rainbow sherbet cone", "a cup of iced tea" ]
B
a hot substance is a source of heat
sciq
sciq_01_09627
What is measured with a personal dosimeter?
[ "alcohol concentration", "blood insulin", "exposure to radioactivity", "internal temperature" ]
C
Measurement of exposure to radioactivity is important for anyone who deals with radioactive materials on a regular basis. Perhaps the simplest device is a personal dosimeter, which is a film badge that will fog up when exposed to radiation. The amount of fogging is proportional to the amount of radiation present.
medmcqa
medmcqa_05_00745
A 30-year-old patient presents with H/O antibodies to HCV for 6 months duration and his AST/ALT is normal. There is no symptom or stigmata of liver disease. The most appropriate approach:
[ "Re-assure the patient", "Repeat titer every 3 years", "Repeat enzymes yearly", "Do liver biopsy and sta antiviral drugs accordingly." ]
D
Chronic infection with hepatitis C is common even in those patients with return of aminotransferases to normal. Aminotransferases continue to fluctuate and can be normal in patients with long-standing disease * A pretreatment liver biopsy to assess histologic grade and stage provides information about progression of he...
ARC-Easy
arc_04_00611
When hunting by humans causes a species to become extinct, this may produce damaging effects throughout the ecosystem of the extinct species. What is the cause of this damage?
[ "alteration of a food web", "degradation of a habitat", "modification of a climate", "reversal of a flow of energy" ]
A
null
ARC-Easy
arc_04_01725
Which list contains only nonliving things?
[ "coins, snakes, birds", "water, rocks, sunlight", "rubber ball, plants, house", "soil, fish, air" ]
B
null
ARC-Challenge
arc_04_02749
Human bodies have complex structures that support growth and survival. What is the most basic structure of the human body that supports growth and survival?
[ "a cell", "a tissue", "an organ", "an organ system" ]
A
null
ARC-Easy
arc_04_00035
Which characteristic below most likely accounts for our limited knowledge of galaxies?
[ "their tiny size", "their magnetic cores", "their inability to produce light", "their great distance from Earth" ]
D
null
ARC-Easy
arc_04_02084
Hydrogen gas and oxygen gas combine to form water. Which would be a more concise way of expressing what happens in this chemical reaction?
[ "write a chemical formula", "write a chemical equation", "describe the rearrangement of the atoms", "describe the procedure for creating this change" ]
B
null
openbookqa
obqa_02_04661
A load of nutriment, when consumed, will be
[ "tilled in the soil", "burned in a fire", "utilized internally by something", "made into golden wheat" ]
C
the digestive system digests food for the body
sciq
sciq_01_01969
What type of winds are created when more solar energy strikes the equator than the polar regions?
[ "domestic winds", "global winds", "equatorial winds", "arctic winds" ]
B
Winds on Earth are either global or local. Global winds blow in the same directions all the time. They are created when more solar energy strikes the Equator than the polar regions. More about global wind patterns is described in detail in the concept "Global Wind Belts. ".
ARC-Easy
arc_04_01025
The correct procedure after completing a laboratory experiment is to
[ "put all non-reusable glass in the trash.", "pour all used chemicals down the sink.", "collect and store recyclable material.", "return used samples to natural settings." ]
C
null
math_qa
mathqa_03_03173
a doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 135 pounds . if the typical dosage is 2 cubic centimeters per 15 pounds of the body weight , by what percent was the prescribed dosage greater than the typical dosage ?
[ "8 %", "9 %", "11 %", "12.5 %" ]
C
"typical dosage is dose : weight : : 2 : 15 . now if weight is 135 ( multiplying factor is 9 : ( 135 / 15 ) ) then typical dosage would be 2 * 9 = 18 cc . dosage = 18 cc . dosage is greater by 2 cc . % dosage is greater : ( 2 / 18 ) * 100 = 11.11 % c is the answer ."
openbookqa
obqa_02_04632
Caribbean natives have a dark skin tone do to
[ "unicorns", "solar radiation", "lack of nutrients", "camouflage" ]
B
radiation is when heat is transferred through waves
math_qa
mathqa_03_02041
64 + 5 * 12 / ( 180 / 3 ) = ?
[ "22", "77", "29", "65" ]
D
64 + 5 * 12 / ( 180 / 3 ) = 64 + 5 * 12 / ( 60 ) = 64 + ( 5 * 12 ) / 60 = 64 + 1 = 65 . answer : d
sciq
sciq_01_11443
Adult tunicates also develop a sac, called a what?
[ "hood", "tunic", "skirt", "frill" ]
B
24.2 Subphylum Urochordata The tunicates are located in this subphylum. Along with the subphylum Cephalochordata, these two subphyla make up the invertebrate chordates. Only the tunicate larvae have notochords, nerve cords, and postanal tails. Most adult tunicates are sessile, filter-feeders which retain their pharynge...
medmcqa
medmcqa_05_01463
Zinc oxide eugenol cement- type IV is used as:
[ "Temporary material", "Long term luting agent for fixed prosthesis", "A base or a temporary filling", "An intermediate restoration" ]
D
Zinc oxide−eugenol (ZOE) cement—A cement that is based on the reaction between zinc oxide and eugenol, formulated for use in 4 types. Type I - Temporary material Type II - Long-term luting agent for fixed prostheses Type III - Base or a temporary filling Type IV - Iintermediate restoration f: Phillip’s Science of Den...
sciq
sciq_01_06089
What do you call the two ends of a magnet where the magnetic effect is strongest?
[ "magnetos", "plates", "poles", "opposites" ]
C
Any magnet has two ends called poles where the magnetic effect is strongest.
sciq
sciq_01_07427
What is a funnel-shaped cloud of whirling high winds known as?
[ "volcano", "tornado", "hurricane", "tsunami" ]
B
Severe thunderstorms have a lot of energy and strong winds. This allows them to produce tornadoes. A tornado is a funnel-shaped cloud of whirling high winds. You can see a tornado in Figure below . The funnel moves along the ground, destroying everything in its path. As it moves it loses energy. Before this happens it ...
math_qa
mathqa_03_03887
average of money that group of 4 friends pay for rent each month is $ 800 . after one persons rent is increased by 20 % the new mean is $ 870 . what was original rent of friend whose rent is increased ?
[ "800", "1400", "1000", "1100" ]
B
"0.2 x = 4 ( 870 - 800 ) 0.2 x = 280 x = 1400 answer b"
sciq
sciq_01_00955
What takes the shape of the container they are placed in and have a definite volume?
[ "solids", "liquids", "loads", "gases" ]
B
math_qa
mathqa_03_02878
when an amount was distributed among 14 boys , each of them got $ 80 more than the amount received by each boy when the same amount is distributed equally among 18 boys . what was the amount ?
[ "5050", "5020", "5040", "5030" ]
C
"let the total amount be rs . x the , x / 14 - x / 18 = 80 = = > 2 x / 126 = 80 = = > x / 63 = 63 x 80 = 5040 . hence the total amount is 5040 . answer c ."
medmcqa
medmcqa_05_00491
Which of this is NOT a sexual disorder?
[ "Trafficking", "Voyeurism", "Adultery", "Sexual harassment" ]
A
(A) Trafficking# HUMAN TRAFFICKING> It is the trade of humans, most commonly for the purpose of forced labour, sexual slavery, or commercial sexual exploitation for the trafficker or others.> May encompass providing a spouse in the context of forced marriage, or the extraction of organs or tissues, including for surrog...
openbookqa
obqa_02_04865
If a space that is lacking walls or a roof is continuously dampened from above, data may be collected to inform those living there about the results. The information would be
[ "measuring distance", "creating rain", "measuring dampness", "enjoying nature" ]
C
rainfall is the amount of rain an area receives
openbookqa
obqa_02_01792
Due to camouflage, you are less likely to be able to see a polar bear in
[ "a church", "the zoo", "alaska", "africa" ]
C
mimicry is used for avoiding predators by animals by camouflaging as a dangerous animal
openbookqa
obqa_02_03872
which one of these would ensure the least amount of risk to make contact with?
[ "an electric wire wrapped in water", "an electric wire wrapped in metal", "an electric wire wrapped in steel", "an electric wire wrapped in thick cotton" ]
D
electrical insulation requires wrapping a conductor in an insulator
math_qa
mathqa_03_03930
the volumes of two cones are in the ratio 1 : 12 and the radii of the cones are in the ratio of 1 : 3 . what is the ratio of their heights ?
[ "a", "b", "c", "d" ]
A
the volume of the cone = ( 1 / 3 ) π r 2 h only radius ( r ) and height ( h ) are varying . hence , ( 1 / 3 ) π may be ignored . v 1 / v 2 = r 12 h 1 / r 22 h 2 = > 1 / 12 = ( 1 ) 2 h 1 / ( 3 ) 2 h 2 = > h 1 / h 2 = 3 / 4 i . e . h 1 : h 2 = 3 : 4 answer : a
medmcqa
medmcqa_05_02168
The earliest sign of papilloedema -
[ "Filling of the physiological cup", "The blurring of the disc margin", "Obliteration of cup", "Cotton-wool spots" ]
B
Ans. is 'b' i.e., Blurring of disc margin Ophthalmoscopic signs of papilloedema o Blurring of disc margin o Venous :- Engorgment, congestion, loss of pulsation (first sign) o Hyperemia of the disc with capillary dilatation. o Filling of physiological cup with gradual obliteration of physiological cup. o Gradual elvetio...
sciq
sciq_01_05176
Though viruses are not considered living, they share two important traits with living organisms: they have genetic material and they can undergo what process?
[ "evolution", "sexual reproduction", "generation", "learning" ]
A
Though viruses are not considered living, they share two important traits with living organisms. They have genetic material like all cells do (though they are not made of cells), and they can evolve. The genetic material of a virus can change (mutate), altering the traits of the virus. As the process of evolution has r...
medmcqa
medmcqa_05_03649
"Satellite lesions" are seen in
[ "Intertrigo", "Tinea Versicolor", "Kerion", "Flavus" ]
A
Intertrigo is a candidal infection & inflammation of body folds characterized by satellite lesions i.e presence of daughter pustules at the periphery of a lesion. Note: Satellite lesions are also seen in Borderline Tuberculoid type of Leprosy.
medmcqa
medmcqa_05_03166
Steroid involved in water balance:
[ "Oestrogen", "Testosterone", "Aldosterone", "Vit D" ]
C
Ans: c (Aldosterone)Ref: Ganong, 23rd ed Pg. 357Aldosterone is the steroid that is mainly involved in water balance.AldosteroneIt increases the reabsorption of Na and excretion of K .It acts on the kidney - primarily the Principal cells of the collecting duct. Stimuli for secretion -Rennin angiotensin systemIncreased K...
ARC-Challenge
arc_04_03050
Which best explains why children resemble their parents?
[ "They eat the same foods.", "They have similar DNA.", "They speak the same language.", "They have the same interests." ]
B
null
medmcqa
medmcqa_05_03650
Greater risk of carcinoma of stomach is associated with-
[ "Old age", "Intestinal metaplasisa", "Cardiac end ulcer", "Prepyloric ulcer" ]
B
Ans. is 'b' i.e., Intestinal metaplasia
sciq
sciq_01_04305
Like other bryophytes, moss plants spend most of their life cycle as what?
[ "protozoa", "zygotes", "copepods", "gametophytes" ]
D
Eleutherozoa are the echinoderms that can move. This group includes the starfish and most other echinoderms.
medmcqa
medmcqa_05_00853
Which of the following antibiotic can cause cholestatic jaundice
[ "Erythromycin", "Isoniazid", "Amikacin", "Azithromycin" ]
A
Antibiotics like Erythromycin, Nitrofurantoin, Flucloxacillin can lead to cholestatic jaundics.
sciq
sciq_01_01958
If an abnormal cell is not prevented from dividing and it divides uncontrollably, what forms?
[ "tumor", "cyst", "edema", "inflammation" ]
A
In panel A, an abnormal cell (2) is prevented from dividing, and the abnormal cell dies (1). In panel B, an abnormal cell is not prevented from dividing. Instead, it divides uncontrollably, leading to the formation of a tumor.
sciq
sciq_01_03200
What is the terme for water vapor changing to liquid water?
[ "condensation", "freezing", "transubstantiation", "evaporation" ]
A
sciq
sciq_01_00612
Steam actually consists of tiny droplets of liquid what?
[ "mercury", "lead", "water", "methane" ]
C
Steam actually consists of tiny droplets of liquid water. What you can’t see in the picture is the water vapor that is also present in the air above the spring. Water vapor is water in the gaseous state. It constantly rises up from the surface of boiling hot water. Why? At high temperatures, particles of a liquid gain ...
ARC-Easy
arc_04_01852
An organism's cells include organelles and a cell wall. In which taxonomic group or groups might the organism be classified?
[ "plants only", "bacteria or archaea", "plants, fungi, or protists", "bacteria, fungi, or protists" ]
C
null
ARC-Easy
arc_04_00627
Blood absorbs oxygen in the
[ "heart.", "lungs.", "stomach.", "muscles." ]
B
null
sciq
sciq_01_07770
The loss of too much blood may lead to shock of what system?
[ "heart", "Circular", "nervous", "circulatory" ]
D
Circulatory Shock The loss of too much blood may lead to circulatory shock, a life-threatening condition in which the circulatory system is unable to maintain blood flow to adequately supply sufficient oxygen and other nutrients to the tissues to maintain cellular metabolism. It should not be confused with emotional or...
sciq
sciq_01_08664
Two major types of fungus-like protists are slime molds and which other?
[ "green molds", "foul molds", "water molds", "black molds" ]
C
Fungus-like protists share many features with fungi. Like fungi, they are heterotrophs, meaning they must obtain food outside themselves. They also have cell walls and reproduce by forming spores, just like fungi. Fungus-like protists usually do not move, but a few develop movement at some point in their lives. Two maj...
medmcqa
medmcqa_05_02560
Drug of choice for antibiotic associated pseudomembranous colitis is:
[ "Oral vancomycin", "Metronidazole", "Clindamycin", "Penicillin G" ]
A
Ans. (A) Oral vancomycin(Ref: CMDT 2019/661)According to new guidelines, oral vancomycin is drug of choice for pseudomembranous colitis
ARC-Easy
arc_04_00798
Vinegar and water are placed in a container and stirred. What is formed when they are mixed?
[ "gas", "solid", "solution", "compound" ]
C
null
sciq
sciq_01_04156
Reptiles can be found on every continent except which one?
[ "australia", "antarctica", "africa", "south america" ]
B
Reptiles can be found on every continent except Antarctica.
ARC-Easy
arc_04_01336
Which distance is the smallest for which it is most practical to use the light-year as a unit of measurement?
[ "the distance between Earth and its Moon", "the distance between Jupiter and the Sun", "the distance between the Milky Way and the nearest galaxy", "the distance between the Sun and the center of the Milky Way" ]
D
null
sciq
sciq_01_07087
What is a sac-like organ that stores urine?
[ "the urinary bladder", "the small intestine", "the urinary liver", "the colon" ]
A
From the kidneys, urine enters the ureters. These are two muscular tubes that carry urine to the urinary bladder. Contractions of the muscles of the ureters move the urine along by peristalsis. The urinary bladder is a sac-like organ that stores urine. When the bladder is about half full, a sphincter relaxes to let uri...
sciq
sciq_01_02014
What layer of soil usually does not have very small particles like clay?
[ "silt", "sediment", "undersoil", "topsoil" ]
D
Topsoil usually does not have very small particles like clay. Clay-sized particles are carried to lower layers as water seeps down into the ground. Many minerals dissolve in the fresh water that moves through the topsoil. These minerals are carried down to the lower layers of soil.
sciq
sciq_01_08154
What are elements required in very small amounts?
[ "micronutrients", "macronutrients", "minerals", "pollutants" ]
A
math_qa
mathqa_03_04356
a certain experimental mathematics program was tried out in 2 classes in each of 34 elementary schools and involved 40 teachers . each of the classes had 1 teacher and each of the teachers taught at least 1 , but not more than 3 , of the classes . if the number of teachers who taught 3 classes is n , then the least and...
[ "0 and 13", "0 and 14", "1 and 10", "1 and 9" ]
B
one may notice that greatest possible values differ in each answer choice in contrast to the least values , which repeat . to find out the greatest value you should count the total classes ( 34 * 2 = 68 ) , then subtract the total # of teachers since we know from the question that each teacher taught at least one class...
sciq
sciq_01_10220
Which law states that a pair of alleles is separated, or segregated, during the formation of gametes?
[ "separation anxiety", "law of equals", "de facto segregation", "law of segregation" ]
D
Mendel summarized his findings in two laws: the Law of Segregation and the Law of Independent Assortment. The Law of Segregation is based on his findings from his first set of experiments. Mendel stated that heritable factors are segregated during gamete formation. More precisely, this law states that a pair of alleles...
sciq
sciq_01_01568
Where is chemical energy stored?
[ "nucleus", "cell wall", "ribosomes", "atom bonds" ]
D
2. Chemical energy is energy that is stored in the bonds between the atoms of compounds. If the bonds are broken, the energy is released and can be converted to other forms of energy.
ARC-Challenge
arc_04_02154
On Earth, water can be a solid, a liquid, or a gas. Which energy source has the greatest influence on the state of matter of water?
[ "the sun", "the wind", "ocean currents", "the metal core" ]
A
null
openbookqa
obqa_02_04936
Animals cope with the differing temperatures in different ways. When its hot out, which animals pant?
[ "seven", "whales", "the sun", "canines" ]
D
panting is when an animal hangs its tongue out of its mouth to adjust to hot temperatures
sciq
sciq_01_03756
Recognition of pathogens is a function of what type of response?
[ "hormones", "immune", "inhalation", "digestion" ]
B
Recognition of Pathogens Cells of the innate immune response, the phagocytic cells, and the cytotoxic NK cells recognize patterns of pathogenspecific molecules, such as bacterial cell wall components or bacterial flagellar proteins, using pattern recognition receptors. A pattern recognition receptor (PRR) is a membrane...
sciq
sciq_01_04944
The ability to maintain a stable internal temperature, despite the climate, is exhibited by members of what animal group?
[ "fish", "parasites", "mammals", "reptiles" ]
C
Not really. Like all mammals, polar bears maintain a stable internal temperature. They do not need to stay warm by lying in the sun. This allows them to live in cold climates.
sciq
sciq_01_06867
What can often be used to measure distance?
[ "histograms", "graphs", "models", "maps" ]
D
Maps can often be used to measure distance. The map in the Figure below shows the route from Jordan’s house to his school. You can use the scale at the bottom of the map to measure the distance between these two points.
sciq
sciq_01_11075
What is the fastest land animal?
[ "rhino", "cheetah", "ostrich", "greyhound" ]
B
Mammals are noted for the many ways they can move. Some mammals are well known for their speed. The fastest land animal is a mammal, the cheetah. It can race at speeds of up to 112 kilometers (70 miles) per hour.
math_qa
mathqa_03_04173
working alone , mary can pave a driveway in 3 hours and hillary can pave the same driveway in 6 hours . when they work together , mary thrives on teamwork so her rate increases by 10 % , but hillary becomes distracted and her rate decreases by 20 % . if they both work together , how many hours will it take to pave the ...
[ "2 hours", "4 hours", "5 hours", "6 hours" ]
A
"initial working rates : mary = 1 / 3 per hour hillary = 1 / 6 per hour rate when working together : mary = 1 / 3 + ( 1 / 10 * 1 / 3 ) = 3 / 8 per hour hillary = 1 / 6 - ( 1 / 5 * 1 / 6 ) = 2 / 15 per hour together they work 3 / 8 + 2 / 15 = 1 / 2 per hour so they will need 2 hours to complete the driveway . the correc...
sciq
sciq_01_06809
Another major cause of extinction is global warming , which is also known as?
[ "global climate change", "regional climate change", "rapid climate change", "sudden climate change" ]
A
Another major cause of extinction is global warming , which is also known as global climate change. During the past century, the Earth's average temperature has risen by almost 1°C (about 1.3°F). You may not think that is significant, but to organisms that live in the wild and are constantly adapting to their environme...
math_qa
mathqa_03_02473
john distributes his pencil among his 4 friends rose , mary , ranjan , and rohit in the ratio 1 / 5 : 1 / 3 : 1 / 4 : 1 / 5 . what is the minimum no . of pencils that the person should have ?
[ "59", "65", "70", "77" ]
A
"rakesh : rahul : ranjan : rohit = 1 / 5 : 1 / 3 : 1 / 4 : 1 / 5 step 1 : at first we need to do is lcm of 2 , 3,4 and 5 is 60 . step 2 : then pencil are distributed in ratio among friends , rakesh = ( 1 / 5 x 60 ) = 12 rahul = ( 1 / 3 x 60 ) = 20 . ranjan = ( 1 / 4 x 60 ) = 15 . rohit = ( 1 / 5 x 60 ) = 12 . step 3 : ...
medmcqa
medmcqa_05_02081
Marker of faecal contaminantin is -
[ "Ascaris", "E. Coli", "Guinea worm presence", "Balantidium coli" ]
B
Coliform organisms are considered as indicators of faecal contamination . This is because 1.coliform organisms are constantly present in abundance in huma intestine.they are foriegn to potable water.hence their presence indicate faecal conatamination. 2.they are easily detected by culture methods as small as one bacter...
sciq
sciq_01_10183
Where do most of the steps of cellular respiration take place?
[ "ribosomes", "cytoplasm", "nucleus", "mitochondria" ]
D
Most of the steps of cellular respiration take place in the mitochondria.
openbookqa
obqa_02_04597
An example of an electric insulator could be
[ "magic", "orange juice", "tupperware", "milk" ]
C
brick is an electrical insulator
math_qa
mathqa_03_02899
having scored 95 runs in the 19 th inning , a cricketer increases his average score by 4 . what will be his average score after 19 innings ?
[ "28", "27", "23", "22" ]
C
"explanation : let the average score of the first 18 innings be n 18 n + 95 = 19 ( n + 4 ) = > n = 19 so , average score after 19 th innings = x + 4 = 23 . answer : c"
sciq
sciq_01_01981
Digestion and respiration are both facilitated by the pharynx, more commonly called the what?
[ "sinus", "throat", "esophagus", "nose" ]
B
The Pharynx The pharynx (throat) is involved in both digestion and respiration. It receives food and air from the mouth, and air from the nasal cavities. When food enters the pharynx, involuntary muscle contractions close off the air passageways. A short tube of skeletal muscle lined with a mucous membrane, the pharynx...
medmcqa
medmcqa_05_03569
Virus that affect lymphoid tissue -
[ "Adenovirus", "Herpes virus", "CMV", "HIV" ]
D
HIV virus also called lymphadenopathy associated virus REF:ANANTHANARAYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO. 570