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math_qa
mathqa_03_00318
john makes $ 60 a week from his job . he earns a raise and nowmakes $ 70 a week . what is the % increase ?
[ "16 %", "16.66 %", "17 %", "17.2 %" ]
B
"increase = ( 10 / 60 ) * 100 = ( 1 / 6 ) * 100 = 16.66 % . b"
openbookqa
obqa_02_02130
A creature may reproduce during
[ "a stage of maturity", "a concert on stage", "a stage of denial", "a staging of hosts" ]
A
reproduction is a stage in the life cycle process
openbookqa
obqa_02_00130
Carbon dioxide exists where it does because
[ "humans expel it", "deer eat it", "birds use it", "trees absorb it" ]
A
carbon dioxide can be found in the air
sciq
sciq_01_08159
What state of hydrogen can be predicted based on the atoms to which it is bonded?
[ "condensation", "precipitation", "evaporation", "oxidation" ]
D
The oxidation state of hydrogen can also be predicted based on the atoms to which it is bonded. As with other pure elements, hydrogen has an oxidation state of zero in H 2 .
ARC-Easy
arc_04_01100
Which statement is true for all objects?
[ "All objects are shiny.", "All objects are hard.", "All objects are rough.", "All objects have mass." ]
D
null
sciq
sciq_01_02253
Deep water filling a void caused by surface winds blowing water north and south is known as?
[ "surface current", "upwelling", "divergence", "downwelling" ]
B
Upwelling also takes place along the Equator. Winds blow the surface water north and south. This leaves a void that deep water can upwell into. The nutrients rise to the surface and support a great deal of life in the equatorial oceans.
math_qa
mathqa_03_04086
if x is real , find the maximum value of the expression - 2 x ^ 2 + 9 x + 11 .
[ "12.125", "15.125", "18.125", "21.125" ]
D
"this is an equation of a downward facing parabola . the maximum value is the top point of the parabola . - 2 x ^ 2 + 9 x + 11 = ( - 2 x + 11 ) ( x + 1 ) the roots are 11 / 2 and - 1 . the maximum value must be when x is halfway between these two points . x = 2.25 the maximum value is - 2 ( 2.25 ) ^ 2 + 9 ( 2.25 ) + 11...
sciq
sciq_01_06308
What is connected to, and dependent on, the gametophyte?
[ "the sperm", "the sporophyte", "the chromosomes", "the zygote" ]
B
Following fertilization, the sporophyte forms. The sporophyte is connected to, and dependent on, the gametophyte.
math_qa
mathqa_03_04551
find large number from below question the difference of two numbers is 1015 . on dividing the larger number by the smaller , we get 9 as quotient and the 15 as remainder
[ "1209", "1324", "1245", "1140" ]
D
"let the smaller number be x . then larger number = ( x + 1015 ) . x + 1015 = 9 x + 15 8 x = 1000 x = 125 large number = 125 + 1015 = 1140 answer : d"
math_qa
mathqa_03_04915
if two sides of a triangle are 6 and 13 , respectively , which of the following could not be the area of this triangle ?
[ "40'", "6'", "17'", "29'" ]
A
for this question it would be helpful to know the largest area that this triangle could be , given the two sides of 6 and 12 . we know that the area of a triangle will be maximized when two sides are perpendicular to each other ( consult bunuel ' s drawing above ) . thus we have a max area being equal to one half the b...
ARC-Easy
arc_04_00504
If two objects are two meters apart, which of these changes will increase the gravitational force between the two objects?
[ "decreasing the mass of one object", "decreasing the mass of both objects", "moving the objects to one meter apart", "moving the objects to three meters apart" ]
C
null
sciq
sciq_01_10607
What is a prerequisite for fertilization to take place in plants?
[ "pollination", "photosynthesis", "mitosis", "germination" ]
A
Pollination must occur for fertilization to take place. Zygotes develop into embryos inside seeds, from which the next sporophyte generation grows.
math_qa
mathqa_03_02762
for how many integer values of n will the value of the expression 4 n + 7 be an integer greater than 1 and less than 200 ?
[ "48", "49", "50", "51" ]
C
from first constraint 4 n + 7 > 1 4 n > - 6 n > - ( 3 / 2 ) n > - 1.5 ( n = - 1 , 0 , 1 , 2 3 . . . . . . . . upto infinity ) from second constraint 4 n + 7 < 200 4 n < 193 n < 48 . 25 n = ( - infinity , . . . . . . . - 3 , - 2 , - 1 , 0 , 1 , 2 , . . . . . . . . . upto 48 ) combining the two - 1.5 < n < 48.25 n = 1 to...
ARC-Challenge
arc_04_02231
In a food pyramid, which best explains why the number of organisms decreases from one trophic level to the next?
[ "Consumers at the lower level require more energy than the top-level consumers.", "Consumers at the top level require more energy than the lower-level consumers.", "The consumers are feeding on larger organisms that have less energy.", "The consumers are feeding on smaller organisms that have less energy." ]
B
null
medmcqa
medmcqa_05_04426
Impetigo herpetiformes in pregnancy is treated with
[ "Acyclovir", "Acyclovir + antimicrobials for secondary infections", "Systemic corticosteroids + antimicrobials for secondary infection", "Systemic corticosteroids + acyclovir + antimicrobials for secondary infection" ]
C
Generalized pustular psoriasis of pregnancy (impetigo herpetiformes) is treated with systemic steroids along with antimicrobials for secondary infection.
sciq
sciq_01_07591
The most common mode of asexual reproduction is through the formation of asexual these?
[ "cells", "fibers", "spores", "atoms" ]
C
The most common mode of asexual reproduction is through the formation of asexual spores, which are produced by one parent only (through mitosis) and are genetically identical to that parent (Figure 24.8). Spores allow fungi to expand their distribution and colonize new environments. They may be released from the parent...
openbookqa
obqa_02_00909
where do arctic animals reside?
[ "arctic fire", "tropical jungles", "chilly habitats", "sahara habitats" ]
C
arctic animals live in an arctic environment
ARC-Challenge
arc_04_02873
A meteorologist records data for a city on a certain date. The data includes temperature, cloud cover, wind speed, barometric pressure, and wind direction. Which method should the meteorologist use to record this data for a quick reference?
[ "a written description", "a table", "a station model", "a weather map" ]
B
null
sciq
sciq_01_06815
What is used to describe gas concentrations of a solution?
[ "atom fractions", "mole fractions", "mesh fractions", "fixation fractions" ]
B
There are several different ways to quantitatively describe the concentration of a solution. For example, molarity was introduced in as a useful way to describe solution concentrations for reactions that are carried out in solution. Mole fractions, introduced in , are used not only to describe gas concentrations but al...
sciq
sciq_01_00649
When someone falls, the kinetic energy the person has upon reaching the floor is the amount of what energy lost by falling through height?
[ "gravitational energy", "thermal energy", "potential energy", "nuclear energy" ]
C
with a minus sign because the displacement while stopping and the force from floor are in opposite directions (cos θ = cos 180º = − 1) . The floor removes energy from the system, so it does negative work. The kinetic energy the person has upon reaching the floor is the amount of potential energy lost by falling through...
sciq
sciq_01_09994
Convection is the transfer of what type of energy by particles moving through a fluid?
[ "atmospheric", "thermal", "Chemical", "Nuclear" ]
B
Convection is the transfer of thermal energy by particles moving through a fluid. The particles transfer energy by moving from warmer to cooler areas. They move in loops called convection currents.
sciq
sciq_01_06276
All animals have specialized types of what basic structures, which can then do different jobs?
[ "muscles", "proteins", "atoms", "cells" ]
D
Animals are multicellular eukaryotes in the Animal Kingdom. All animals are heterotrophs. They eat other living things because they can’t make their own food. All animals also have specialized cells that can do different jobs. Most animals have higher levels of organization as well. They may have specialized tissues, o...
sciq
sciq_01_00524
What kind of weather change do la nina years usually bring?
[ "heat", "Mass amounts of snow", "drought", "moisture" ]
C
El Niño and La Niña bring about dramatic changes in climate for a year or two. In some locations, one brings rain and the other brings drought. In California, for example, El Niño years are full of snow and rain. La Niña years tend toward drought. These variations can bring tremendous changes to living creatures. Human...
medmcqa
medmcqa_05_04923
Which of the following infestations leads to malabsorption?
[ "Giardia lamblia", "Ascaris lumbricoides", "Necator americana", "Ancylostoma duodenale" ]
A
Ans. (a) Giardia lamblia Remember: Ascaris lumbricoides in small intestine usually cause no symptoms. In children it may cause pain and intestinal obstruction sometimes complicated by perforation, intussusception or volvulus. Migration to aberrant site can cause biliary colic, cholecystitis, cholangitis, pancreatitis o...
medmcqa
medmcqa_05_04621
A 54-year-old diabetic patient complaints of an unresolved skin lesion on his foot. The lesion began several weeks ago as a blister and has since become a painful, erosive, expanding sore. On examination, the affected site is now 5 cm in diameter, with a black necrotic center and raised red edges. Which toxin has a mec...
[ "Anthrax toxin", "Botulinum toxin", "Cholera toxin", "Diphtheria toxin" ]
D
This is the history of ecthyma gangrenosum (skin infection) due to Pseudomonas aeruginosa. Exotoxin A of P. aeruginosa has a same mechanism of action as diphtheria toxin. Pseudomonas aeruginosa is a gram-negative bacterium, motile by polar flagella. It is catalase and oxidase test positive. It produces two impoant pigm...
math_qa
mathqa_03_04890
if sharon ' s weekly salary increased by 15 percent , she would earn $ 575 per week . if instead , her weekly salary were to decreased by 12 percent , how much would she earn per week ?
[ "rs . 540", "rs . 580", "rs . 560", "rs . 620" ]
C
"soln : - ( 575 / 115 ) 112 = 560 in this case long division does not take much time . ( 23 / 5 ) = 4.6 4.6 * 112 = rs . 560 answer : c"
sciq
sciq_01_08931
Natural gas is often found along with what other fossil fuels in underground deposits?
[ "repository and oil", "coal and oil", "coal and methane", "methane and oil" ]
B
Natural gas is often found along with coal or oil in underground deposits. This is because natural gas forms with these other fossil fuels. One difference between natural gas and oil is that natural gas forms at higher temperatures.
ARC-Easy
arc_04_01296
A factory in Japan had been dumping mercury into Minamata Bay. Certain microorganisms in the water were able to change the mercury into a form that the plankton could use. Which most likely happened next?
[ "The organisms built up a resistance to the mercury.", "The mercury passed through the food chain.", "The plankton made the mercury safe.", "The fish would not eat the plankton." ]
B
null
math_qa
mathqa_03_00864
1 , 1 , 2 , 1 , 2 , 3 , 1 , 2 , 3 , 4 , 1 , 2 , __ ?
[ "1", "2", "3", "4" ]
C
"1,1 , 2,1 , 2,3 , 1,2 , 3,4 , 1,2 , __ ? looking at the series 1 12 123 1234 12 ( 3 ) 45 so the answer is 3 . answer : c"
openbookqa
obqa_02_02849
A faucet drips
[ "lava", "air", "sand", "melted ice" ]
D
matter in the liquid state drips
medmcqa
medmcqa_05_01144
A farmer was brought to the casualty with restlessness & agitation. Examination shows temp. 103° F, flushed face, pupils dilated and fixed. The diagnosis is -
[ "Datura poisoning", "Organophosphorus poisoning", "Diazepam poisoning", "Opium poisoning" ]
A
Among the given options, only datura causes dilatation of pupil. All the other features given in question are also seen in datura poisoning.
math_qa
mathqa_03_03016
the speed of a car is 90 km in the first hour and 60 km in the second hour . what is the average speed of the car ?
[ "12", "75", "88", "54" ]
B
"s = ( 90 + 60 ) / 2 = 75 kmph answer : b"
medmcqa
medmcqa_05_01497
Which of the following is not due to complement deficiency?
[ "SLE", "PNH", "Glomerulonephritis", "Neisseria infection" ]
B
PNH is due to complement regulatory protein deficiency (DAF and CD59).
sciq
sciq_01_06494
Molar mass is equal to density multiplied by what?
[ "molar energy", "molar gravity", "molar weight", "molar volume" ]
D
Molar mass is equal to density multiplied by molar volume.
medmcqa
medmcqa_05_00689
Transpo of glucose from the lumen to the mucosal cell is dependent on the diffusion of
[ "K+", "HCO3", "Na+", "Proteins" ]
C
Glucose and galactose are absorbed by a sodium-dependent process. They are carried by the same transpo protein (SGLT 1)The SGLT 1 transpoer is coupled to the Na+-K+ pump, allowing glucose and galactose to be transpoed against their concentration gradients.Harper 30th edition Pg:538
medmcqa
medmcqa_05_04123
District population 10 lac, with under-I o are 30%, prevalence of blindness is 0.8/1000 of under-16 population. Calculate the no. of blind under-16
[ "240", "2400", "24000", "240000" ]
A
Ans. a. 240 Prevalence = 0.8/1000 District Population = 10 Lakhs Under 16 = 30% of district population Hence, total population of under 16 = 3 Lakhs Hence, No. of blind under 16 = 0.8 x 3,00,000/1,000 = 240
math_qa
mathqa_03_00390
when 1 + 2 = 23 , 2 + 3 = 65 , 3 + 4 = 127 , then 4 + 5 = ?
[ "209", "250", "265", "280" ]
A
"1 + 2 = > 1 x 2 = 2 & 1 + 2 = 3 = > 2 & 3 = > 23 2 + 3 = > 2 ã — 3 = 6 & 2 + 3 = 5 = > 6 & 6 = > 65 3 + 4 = > 3 ã — 4 = 12 & 3 + 4 = 7 = > 12 & 7 = > 127 then 4 + 5 = > 4 ã — 5 = 20 & 4 + 5 = 9 = > 20 & 9 = > 209 answer : a"
math_qa
mathqa_03_03411
there are 4 more women than there are men on a local co - ed softball team . if there are a total of 18 players on the team , what is the ratio of men to women ?
[ "10 / 16", "6 / 16", "7 / 11", "6 / 10" ]
C
"w = m + 4 w + m = 18 m + 4 + m = 18 2 m = 14 m = 7 w = 11 ratio : 7 : 11 ans : c"
sciq
sciq_01_00832
What kind of bonds are forces of attraction between positive metal ions and the valence electrons that are constantly moving around them?
[ "metallic bonds", "liquid bonds", "neutron bonds", "ionized bonds" ]
A
Metallic bonds are forces of attraction between positive metal ions and the valence electrons that are constantly moving around them (see the Figure below ). The valence electrons include their own and those of other, nearby ions of the same metal. The valence electrons of metals move freely in this way because metals ...
openbookqa
obqa_02_03668
What have a negative impact on the environment?
[ "plants", "trees", "recycling", "dumpyards" ]
D
landfills have a negative impact on the environment
medmcqa
medmcqa_05_02288
A vitreous aspirate has been collected in an emergency at 9 pm. Which of the following is the most appropriate requisite for overnight storage of the sample?
[ "The sample should be kept at 4degC", "The sample should be incubated at 37 degC", "The sample should be refrigerated in deep freezer", "The sample should be refrigerated for the initial 3 hours and then incubated at 37degC" ]
A
Vitreous humor is usually stored at 0-4 degree celsius. Ref: Forensic Chemistry Handbook By Lawrence F. Kobilinsky, Page 466; Comprehensive Ophthalmology By AK Khurana, 4th Edition, Pages 243, 248.
sciq
sciq_01_03007
Humans possess greater diversity of what type, compared to laboratory animals?
[ "pathogens", "elements", "genetics", "lifespans" ]
C
math_qa
mathqa_03_04168
a train 2000 m long can cross an electric pole in 25 sec and then find the speed of the train ?
[ "322", "324", "326", "328" ]
B
"length = speed * time speed = l / t s = 2000 / 25 s = 80 m / sec speed = 80 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 324 kmph answer : b"
medmcqa
medmcqa_05_02797
Antimalarial month is -
[ "April", "May", "September", "June" ]
D
<p> Anti malarial month : Antimalaria month is observed every year in the month of june throughout the country, prior to the onset of monsoon and transmission season, to enhance the level of awareness and encourage community paicipation through mass media campaign and interpersonal conmunication and consolidate interse...
sciq
sciq_01_09597
What occurs when muscle fibers get shorter?
[ "muscle diffusion", "muscle tension", "muscle contraction", "muscle extension" ]
C
Muscle contraction occurs when muscle fibers get shorter. Literally, the muscle fibers get smaller in size. To understand how this happens, you need to know more about the structure of muscle fibers.
sciq
sciq_01_06134
Birds belong to a group of diapsids called the what?
[ "archosaurs", "aviators", "mammals", "conifers" ]
A
Evolution of Birds The evolutionary history of birds is still somewhat unclear. Due to the fragility of bird bones, they do not fossilize as well as other vertebrates. Birds are diapsids, meaning they have two fenestrations or openings in their skulls. Birds belong to a group of diapsids called the archosaurs, which al...
medmcqa
medmcqa_05_00676
Apart from deltoid, which rotator cuff muscle is supplied by axillary nerve?
[ "Supraspinatus", "Infraspinatus", "subscapularis", "Teres minor" ]
D
Ans. D. Teres minorThe muscles supplied by Axillary nerve are Deltoid and Teres minor (Rotator cuff muscle).
sciq
sciq_01_03506
What is the force of attraction between a positive metal ion and valence electrons?
[ "metallic bond", "covalent bond", "galactic bond", "liquid bond" ]
A
A metallic bond is the force of attraction between a positive metal ion and the valence electrons that surround it—both its own valence electrons and those of other ions of the same metal. The ions and electrons form a lattice-like structure. Only metals, such as the copper pictured in the Figure below , form metallic ...
medmcqa
medmcqa_05_00965
AFP raised in:
[ "Teratoma", "Yolk sac tumor", "Choriocarcinoma", "Dysgerminoma" ]
B
Ans. B. Yolk sac tumorAlpha Feto protein (AFP) level are elevated in non- seminomatous germ cell tumors (NSGCT) including embryo. A carcinoma, yolk sac tumor and mixed germ cell tumors.Germ Cell TumorsSeminomatous germ Cell TumorsNon seminomatous Germ Cell K Tumors(NSGCT)TumorAFPhCGTumorAFPHcgSeminoma (male)-ve+/-Embry...
openbookqa
obqa_02_03838
if a person found a toad in the water, where else would it normally be?
[ "it would be on the ground", "it would be in the air", "it would be in the sea", "it would be in a volcano" ]
A
adult amphibians live on land
medmcqa
medmcqa_05_00649
Which of the following pubertal events in girls is not estrogen dependant:
[ "Menstruation", "Vaginal cornification", "Height spurt", "Hair growth" ]
D
In girls the sequence of development of puberty is (Mnemonic: GTPH in males). G = Growth spurt T = Breast development (Thelarche) P = Pubic hair development (Pubarche) H = Height increases; peak growth velocity attained in males = Menstruation starts (Menarche) (Axillary hair develop after menstruation starts) ►The mai...
ARC-Easy
arc_04_00788
A city has a temperature of 75 °F, with partly cloudy skies. Weather forecasters are predicting that the air pressure and temperature will drop during the day. Which type of weather is most likely for this area in the late afternoon?
[ "rainy.", "sunny.", "snowing.", "hailing." ]
A
null
ARC-Easy
arc_04_01914
When oil is burning, the reaction will
[ "only release energy", "only absorb energy", "neither absorb nor release energy", "sometimes release and sometimes absorb energy depending on the oil" ]
A
null
openbookqa
obqa_02_01814
How might a dresser crab avoid attention in an aquarium containing pieces of velvet and necklaces made of colorful stones?
[ "hold a vibrant piece of cloth and wave it rapidly back and forth", "display bright colors to stand out to the fish", "transform into a bureau replete with clothing", "disguise itself as just some junk on the bottom of the tank" ]
D
An example of camouflage is when an organism looks like its environment
openbookqa
obqa_02_00658
An example of an instinctive behavior is
[ "a herd of zebras heading in the direction of rain clouds at the end of the dry season", "a baby bird falling from its nest", "a horse following the commands of its rider", "a bird dying from an infection" ]
A
migration is an instinctive behavior
sciq
sciq_01_09853
What are genes located on the sex chromosomes called?
[ "diploid genes", "dimorphism - linked genes", "autosomes", "sex-linked genes" ]
D
Genes located on the sex chromosomes are called sex-linked genes . Most sex-linked genes are on the X chromosome, because the Y chromosome has relatively few genes. Strictly speaking, genes on the X chromosome are X-linked genes , but the term sex-linked is often used to refer to them.
sciq
sciq_01_09050
What is the term for the change in temperature with distance?
[ "temperature volatility", "distance gradient", "heat gradient", "temperature gradient" ]
D
Temperature gradient is the change in temperature with distance.
medmcqa
medmcqa_05_00367
Parasympathetic nervous system comprises of:
[ "Cranial nerves IlI, V Vil, X and sacral nerves Sl, s2, s3. s4, s5", "Cranial nerves III, VII, IX, X and sacral nerves s2, S3, S4", "Cranial nerves V, VII, IX, X and sacral nerves S2, S3, S4", "Cranial nerves III, V VII, X and sacral nerves S2, S3, S4" ]
B
Ans: B. Cranial nerves III, VII, IX, X and sacral nerves s2, S3, S4(Ref Grayls40/ep235;Ganong25/ep257,24/ep2571Parasympatheticflow is cranio-sacral, carried by cranial nemes III, VII, X, X & sacral nerves S2, S3, S4.
math_qa
mathqa_03_00690
a man can row upstream at 8 kmph and downstream at 13 kmph . the speed of the stream is ?
[ "3 kmph", "2.5 kmph", "3.5 kmph", "4.3 kmph" ]
B
"speed of stream = 1 / 2 ( 13 - 8 ) = 2.5 kmph answer is b"
math_qa
mathqa_03_02411
a train traveling with constant speed crosses a 90 m long platform in 12 seconds and a 120 m long platform in 15 seconds . find the length of the train and its speed .
[ "30", "40", "60", "50" ]
A
let the length of the train be x m and its speed be y m / sec . then , x / y = 12 = > y = x / 12 ( x + 90 ) / 12 = x + 120 / 15 = > x = 30 m . answer : a
ARC-Easy
arc_04_00551
What is the first thing a student should do if an accident happens during a science experiment?
[ "report to the teacher", "clean the laboratory station", "locate the nearest exit", "put on safety goggles" ]
A
null
sciq
sciq_01_10567
What do convergent plate boundaries with trenches have?
[ "caves", "earthquakes", "volcanoes", "geysers" ]
C
Volcanoes at divergent plate boundaries are in the East Pacific Rise. Convergent plate boundaries, where there are trenches, have volcanoes. Hotspot volcanoes are in chains in the middle of the ocean basin.
sciq
sciq_01_07975
Visible light is the narrow segment of what, to which the normal human eye responds?
[ "molecular spectrum", "radio spectrum", "phenomena spectrum", "electromagnetic spectrum" ]
D
Visible Light Visible light is the narrow segment of the electromagnetic spectrum to which the normal human eye responds. Visible light is produced by vibrations and rotations of atoms and molecules, as well as by electronic transitions within atoms and molecules. The receivers or detectors of light largely utilize ele...
sciq
sciq_01_02892
Are the joints between the vertebrae contained in your backbone fully movable, partially movable, or unmovable?
[ "none of these", "fully movable", "partially movable", "unmovable" ]
C
Partly movable joints allow only a little movement. Your backbone has partly movable joints between the vertebrae ( Figure below ).
medmcqa
medmcqa_05_01860
Treatment of choice for panic attack is?
[ "Beta blockers", "Benzodiazepines", "TCAs", "Neuroleptics" ]
B
Ans is 'b' i.e. Benzodiazepines Treatment of Panic disorders* Two most effective treatment are:-A. Pharmacotherapy : - The cornerstone of drug therapy is antidepressants. SSRIs (Fluoxetine or other) are the preferred agents. Because therapeutic effect of antidepressants takes some time to develop, initially Benzodiazep...
sciq
sciq_01_10734
What do you call a process that uses microorganisms to consume a pollutant?
[ "biodegradation", "filtration", "bioremediation", "siltation" ]
C
Cleaning groundwater in an aquifer requires bioremediation or chemical remediation. Bioremediation uses microorganisms to consume a pollutant. Chemical remediation destroys the contaminant.
sciq
sciq_01_10397
Some hormones produced by the anterior pituitary regulate the production of hormones by other tissues belonging to what system?
[ "endocrine", "digestive", "nervous", "cardiovascular" ]
A
The anterior pituitary produces six hormones: growth hormone, prolactin, thyroid-stimulating hormone, adrenocorticotropic hormone, follicle-stimulating hormone, and luteinizing hormone. Growth hormone stimulates cellular activities like protein synthesis that promote growth. Prolactin stimulates the production of milk ...
sciq
sciq_01_08922
Cody's velocity is zero so therefore he doesn't have what?
[ "momentum", "weight", "mass", "temperature" ]
A
A : Cody has no momentum as he stands there because he isn’t moving. In other words, his velocity is zero. However, Cody will gain momentum as he starts moving down the ramp and picks up speed.
sciq
sciq_01_09214
During diastole, what happens to the elastic walls of the arteries?
[ "they become hardened", "they snap back", "they expand", "they evolve" ]
B
ARC-Easy
arc_04_01995
Ninety-nine percent of the mass of an atom is located in
[ "the outermost energy level.", "the first energy level.", "the electron clouds.", "the nucleus." ]
D
null
openbookqa
obqa_02_00616
What causes orbits?
[ "pulling down", "sunlight", "planetary pull", "solar flares" ]
C
gravity causes orbits
openbookqa
obqa_02_03968
What happens when animals in hot environments are active?
[ "They get a sun tan under their fur", "They like to take naps while running", "They become thirsty more easily", "They become fried and baked alive as burgers" ]
C
as the activity of an animal increases , the amount of water in an animal 's body in that environment will decrease
medmcqa
medmcqa_05_01218
An 80-year-old patient presents with a midline tumor of the lower jaw, involving the alveolar margin. He is edentulous. Treatment of choice is:
[ "Hemimandibulectomy", "Commando operation", "Segmental mandibulectomy", "Marginal mandibulectomy" ]
C
Mandibulectomy Marginal mandibulectomy Segmental mandibulectomy - Conservative mandibulectomy - Refers to paial excision of the superior poion of mandible in veical phase - Inner coical surface and a poion of underlying medullary cavity is excised - Preserve mandibular continuity - Indicated when tumor lies within I cm...
medmcqa
medmcqa_05_04314
Which vessel regulates blood flow?
[ "Aery", "Aerioles", "Venules", "Capillaries" ]
B
Ans. b' aerioleDistribution of blood flow is mainly regulated by aeriole, by alteration in their diameter.Increase or decrease the pephenl resistance to blood flow.
sciq
sciq_01_08461
What organ is similar to a lymph node but is much larger and filters blood instead of lymph?
[ "bone", "kidney", "liver", "spleen" ]
D
Figure 42.21 The spleen is similar to a lymph node but is much larger and filters blood instead of lymph. Blood enters the spleen through arteries and exits through veins. The spleen contains two types of tissue: red pulp and white pulp. Red pulp consists of cavities that store blood. Within the red pulp, damaged red b...
sciq
sciq_01_05201
Dolphins are what type of animal?
[ "reptile", "mammal", "fish", "whale" ]
B
Dolphins are mammals that have adapted to swimming and reproducing in water.
medmcqa
medmcqa_05_01775
An influenza is treated by-
[ "Amantadine", "Ribavarin", "Interferon", "Oseltamivir" ]
D
Ans. is 'd' i.e., Oseltamivir o An influenza or bird flu is a contagious disease of animal caused by viruses that normally infect only birds and less commonly pigs. o On rare occaions, an influenza viruses cross the species barrier to infect humans. o Two drugs are commonly used for an influenza :- i) Oseltamivir, ii) ...
sciq
sciq_01_03504
What is the primary gas produced from burning of wood?
[ "carbon dioxide", "Hydrogen Dioxide", "liquid dioxide", "toxic dioxide" ]
A
When wood burns, it changes to ashes, carbon dioxide, water vapor, and other gases. You can see ashes in the wood fire pictured here. The gases are invisible.
sciq
sciq_01_05807
What major pigment in the photosynthetic system is based on a complex molecule and gives plants their green color?
[ "chlorophyll", "cadmium", "melanin", "chloroplasm" ]
A
membrane gradients was known, Mitchell proposed that energy captured through the absorption of light (by phototrophs) or the breakdown of molecules into more stable molecules (by various types of chemotrophs) relied on the same basic (homologous) mechanism, namely the generation of H+ gradients across membranes (the pl...
medmcqa
medmcqa_05_02782
Eale's disease is characterized by -
[ "Recurrent vitreous hemorrhage", "Recurrent anterior uveitis", "Recurrent subconjunctival hemorrhage", "Recurrent choroidal hemorrhage" ]
A
Ans. is 'a' i.e., Recurrent vitreous hemorrhage Eale's diseaseo Eale's disese is an idiopathic inflammatory venous occlusion that primarily affects the peripheral retina of young adult (20-30 yrs) male.o It is characterized by recurrent bilateral vitreous hemorrhage; therefore, also referred to as primary vitreous hemo...
sciq
sciq_01_03106
What is hole that is dug or drilled through the ground down to an aquifer?
[ "well", "big hole", "cave", "elevator" ]
A
Many people get their freshwater from an aquifer. They obtain the water through a well. A well is a hole that is dug or drilled through the ground down to an aquifer.
sciq
sciq_01_11182
What is the middle layer that hair pass through before exiting at the surface of the skin?
[ "epidermis", "epithelial tissue", "cuticle", "dermis" ]
A
Hair follicles are the structures where hairs originate. Hairs grow out of follicles, pass through the epidermis, and exit at the surface of the skin.
sciq
sciq_01_11243
Like simple hormone pathways, hormone cascade pathways typically involve what kind of feedback?
[ "effective", "positive", "negative", "neutral" ]
C
sciq
sciq_01_03972
Water droplets form when the air reaches 100-percent what?
[ "heat", "density", "chance of rain", "humidity" ]
D
Water droplets form when the air reaches 100% humidity. If the temperature is cold enough, frost will form.
sciq
sciq_01_10338
What is necessary in a person who wishes to play wind instruments?
[ "vocal cords", "healthy lungs", "strong hands", "powerful lips" ]
B
You don’t have to be a musician to know that playing a wind instrument like the trumpet takes a lot of air. Having healthy lungs is necessary to play a trumpet or other wind instrument. The lungs are part of the respiratory system.
math_qa
mathqa_03_01134
if x , y , and z are positive real numbers such that x ( y + z ) = 62 , y ( z + x ) = 82 , and z ( x + y ) = 100 , then xyz is
[ "120", "50", "60", "70" ]
A
"xy + xz = 62 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 ) yz + yx = 82 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2 ) xz + zy = 100 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3 ) re - writing equation 3 as follows ...
sciq
sciq_01_07534
What is the study of the relationship between electricity and chemical reactions called?
[ "analytical chemistry", "physical chemistry", "electrochemistry", "inorganic chemistry" ]
C
Summary Electrochemistry is the study of the relationship between electricity and chemical reactions. The oxidation–reduction reaction that occurs during an electrochemical process consists of two halfreactions, one representing the oxidation process and one the reduction process. The sum of the halfreactions gives the...
math_qa
mathqa_03_01239
the difference between simple and compound interest on rs . 1500 for one year at 10 % per annum reckoned half - yearly is ?
[ "8.0", "3.0", "9.5", "3.75" ]
D
"s . i . = ( 1500 * 10 * 1 ) / 100 = rs . 150 c . i . = [ 1500 * ( 1 + 5 / 100 ) 2 - 1500 ] = rs . 153.75 difference = ( 153.75 - 150 ) = rs . 3.75 answer : d"
medmcqa
medmcqa_05_04768
Thoracic duct enters from abdomen to thorax at ?
[ "T6", "T10", "T12", "T8" ]
C
Thoracic duct is also called as Pecquet duct. It is the largest lymphatic duct in body, about 45 cm (18 inches) long. o It has a beaded appearance because of the presence of many valves in its lumen. Thoracic duct begins as a continuation of the upper end of the cisterna chylinear the lower border of Tuveebra and enter...
medmcqa
medmcqa_05_04737
Testing of HLA-B' 5701 is recommended prior to initiation of this antiretroviral agent:-
[ "Atazanavir", "Nelfinavir", "Raltegravir", "Abacavir" ]
D
Testing of HLA-B' 5701 is recommended prior to initiation of abacavir. Abacavir if given in a patient who has HLA-B' 5701 causes high risk of MI.
openbookqa
obqa_02_02115
If a mother mammal wants to give her offspring proper nutrients, she would utilize her
[ "whiskers", "toes", "tail", "areola" ]
D
a mammal usually nurses its young
sciq
sciq_01_06742
Metallic solids are composed entirely of which atoms?
[ "metallic", "metals", "toxic", "organic" ]
A
Metallic solids are composed entirely of metallic atoms. In other solid structures, the electrons involved in bonding tend to be localized, or fixed in place in the covalent bonds. However, the electrons in metallic bonds are delocalized over the entire crystal. The fact that the electrons are free to move between diff...
sciq
sciq_01_00768
What is formed when a subducting plate flows under another tectonic plate?
[ "volcanic arc", "fault line", "boundary plate", "magma" ]
A
As you would expect, where plates collide there are lots of intense earthquakes and volcanic eruptions. The subducting oceanic plate melts as it reenters the mantle. The magma rises and erupts. This creates a volcanic mountain range near the coast of the continent. This range is called a volcanic arc . The Andes Mounta...
sciq
sciq_01_02669
What occurs after gametes fuse and form a diploid zygote?
[ "meiosis", "transcription", "reproduction", "electrolysis" ]
A
openbookqa
obqa_02_00971
Decomposition
[ "takes away from the soils ability to nourish plant life", "adds to the components needed to sustain life in the soil", "increases the rate of depletion of nutrients in the soil", "decreases nutrients in the soil" ]
B
decomposition increases the amount of nutrients in the soil
medmcqa
medmcqa_05_01014
Organelle where H202 is produced and destroyed is?
[ "Peroxisome", "Lysosome", "Golgi body", "Ribosome" ]
A
Ans. is 'a' i.e., Peroxisome Peroxisome is a membrane bound organellel found in all eukaryotic cells. "Peroxisomes contain a group of enzymes that oxidize a variety of substrates and thereby form hydrogen peroxide. The H202 thus formed is efficiently decomposed within the organelle by catalase which is present in high ...
sciq
sciq_01_09782
The zeros at the end of a number are known as what?
[ "remaining zeros", "trailing zeros", "rest zeros", "edge zeros" ]
B
Trailing zeros, which are zeros at the end of a number, are significant only if the number has a decimal point. Thus, in 1,500, the two trailing zeros are not.
sciq
sciq_01_11081
What value of dissolved substances is higher than that of their corresponding precipitate?
[ "binary", "ordiny", "entropy", "negentropy" ]
C
Dissolved substances have a higher entropy value than their corresponding precipitate.
sciq
sciq_01_09560
What runs through the penis and opens to the outside at the tip of the penis?
[ "prostate gland", "fallopian tube", "vas deferens", "the urethra" ]
D
openbookqa
obqa_02_01315
A quick way to adjust the formation of portions of the crust of the earth is for it to
[ "experience trembling", "make believe", "fall down", "fly away" ]
A
an earthquake changes Earth 's surface quickly