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7.76k
ARC-Easy
arc_04_00256
Which geologic feature most likely forms when an oceanic tectonic plate is slowly subducted beneath a continental tectonic plate?
[ "ocean trench", "mid-ocean ridge", "continental hot spot", "continental rift valley" ]
A
null
medmcqa
medmcqa_05_03616
Neocerebellum is concerned with
[ "Eye movements", "Motor planning", "Equilibrium", "Motor execution" ]
B
. Neocerebellum comprises of remaining pas of the posterior cerebellum viz., the declive, tuber and the lateral ansiform and paramedian lobules. The neocerebellum receives information from the cerebral coex and pons. It occupies the more lateral regions of the cerebellar coex. It is concerned with skilled voluntary mov...
medmcqa
medmcqa_05_02272
Desired parameter for control of Hypeension-
[ "Cholesterol/HDL<3.5", "HDL / cholesterol ratio <3.5", "LDL / cholesterol > 10mg%", "HDL <30mg%" ]
A
The total cholesterol/ HDL ratio less than 3.5 has been recommended as a clinical goal for CHD and Hypeension prevention . Ref-Park&;s textbook of Preventive and Social Medicine 24th edition. .
openbookqa
obqa_02_01170
Where might you find eggs?
[ "forest", "space", "lava", "ocean" ]
A
some birds live in forests
sciq
sciq_01_00542
Matter can be described with what two encompassing types of properties?
[ "color and distance", "physical and chemical", "velocity and energy", "thermal and magnetic" ]
B
Matter can be described with both physical properties and chemical properties.
sciq
sciq_01_10118
Phagocytosis, pinocytosis, and receptor-mediated endocytosis are the three types of what?
[ "nanoparticles", "endocytosis", "mitosis", "modulators" ]
B
medmcqa
medmcqa_05_01189
IFA supplementation is an example of:
[ "Primordial", "Specific protection", "Secondary", "Tertiary" ]
B
Ans. (b) Specific protectionRef: K. Park 23rd ed. / 41* IFA supplement is a chemoprophylaxis given during pregnancy for anemia. It comes under primary level of prevention which is implemented under specific protection.
medmcqa
medmcqa_05_00166
Which of the following is highly effective in preventing convulsions in a woman with severe preeclampsia?
[ "Phenytoin", "MgSO4", "Diazepam", "Levetiracetam" ]
B
Magnesium sulfate is highly effective to prevent convulsions in women with preeclampsia and to stop them in those with eclampsia.In all studies, magnesium sulfate was repoed to be superior to all the compared agents to prevent eclampsia.Reference: William's Obstetrics; 25th edition; Chapter 40; Hypeensive disorders
openbookqa
obqa_02_03836
Japan made Pearl Harbor
[ "the sky", "it's victim", "the moon", "boring and empty" ]
B
An example of hitting something is dropping an object onto that something
openbookqa
obqa_02_01948
the mass of a planet causes
[ "sunrise", "earthquakes", "sunset", "matter to approach" ]
D
the mass of a planet causes the pull of gravity on that planet
ARC-Easy
arc_04_00263
Sir Isaac Newton determined that white light is made up of all the colors of the rainbow. What did he use to discover this phenomenon?
[ "a prism", "a telescope", "a microscope", "a magnifying glass" ]
A
null
medmcqa
medmcqa_05_02201
During the cardiac cycle the opening of the aoic valve takes place at the :
[ "Beginning of systole", "End of isovolumetric contraction", "End of diastole", "End of diastasis" ]
B
B i.e. End of isovolumetric contraction
openbookqa
obqa_02_03912
An example of a conductor might be
[ "carrots", "wood", "a nickel", "magic" ]
C
An electrical conductor is a vehicle for the flow of electricity
sciq
sciq_01_09135
What is the term for the development of an embryo inside an egg within the mother’s body until it hatches?
[ "asexual reproduction", "ovovivipary", "pregnancy", "spawning" ]
B
Ovovivipary refers to the development of an embryo inside an egg within the mother’s body until it hatches. The mother provides no nourishment to the developing embryo inside the egg. This occurs in some species of fish and reptiles.
openbookqa
obqa_02_02374
The location of most C02 is pulled from the air
[ "by greenery", "by detectors", "by scientists", "by people" ]
A
carbon dioxide can be found in the air
math_qa
mathqa_03_00383
a person distributed 20 % of his income to his 3 children each . he deposited 30 % of his income to his wife ' s account . he donated 5 % of remaining amount to an orphan house . finally he has $ 40000 . find his total income ?
[ "452000", "562000", "800000", "500000" ]
C
"3 children got = 3 * 20 % = 60 % wife got = 30 % orphan house = 5 % total = 60 + 30 + 5 = 95 % remaining = 100 - 95 = 5 % 5 % = 40000 100 % = 40000 * 100 / 5 = $ 800000 answer is c"
medmcqa
medmcqa_05_01844
Cultivable (in vitro) hepatitis virus is-
[ "Hepatitis A", "Hepatitis B", "Hepatitis C", "Hepatitis D" ]
A
Hepatitis A virus can be grown in some human and simian cell cultures It is the only human hepatitis virus which can be cultivated in vitro
medmcqa
medmcqa_05_03360
A patient presented with blunt abdominal injury underwent complete repair of liver; and was given transfusion of 12 units of whole blood. Thereafter, it is found that wound is bleeding. It is treated by
[ "Calcium gluconate/calcium chloride", "Fresh Frozen Plasma", "Vitamin-K", "Platelets rich plasma" ]
D
(D) Platelets rich plasma > Massive Transfusion is usually defined as the need to transfuse from one to two times the patient's normal blood volume. In a "normal" adult, this is the equivalent of 10-20 units. Potential complications from this include coagulopathy, citrate toxicity, hypothermia, acid-base disturbances a...
sciq
sciq_01_04037
What kind of radiation is greatest at the equator and lessens toward the poles?
[ "small radiation", "lunar raditation", "solar radiation", "large radiation" ]
C
The amount of solar radiation a place receives is greatest at the Equator and lessens toward the poles.
medmcqa
medmcqa_05_02630
C wave in JVP is DUE TO
[ "Bulging of tricuspid valve during the isovolumetric contraction phase", "Atrial systole", "Passive filling ventricle", "Atrial relaxation" ]
A
ref : rhagawa rao cardiology
medmcqa
medmcqa_05_04131
Which of the following toxins will produce the condition shown below?
[ "Leukocidin", "TSST-1", "ETA and ETB", "Serum opacity factor" ]
C
STAPHYLOCOCCAL SCALDED SKIN SYNDROME Induced by epidermolytic exotoxins (exfoliatin) A and B, which are released by S. aureus -detachment within the epidermal layer, by breaking down the desmosomes. Exotoxins cleave desmoglein-1, which holds the granulosum and spinosum layers together, similar to the pathophysiology of...
openbookqa
obqa_02_01431
An example of a true combination of mixed substances is
[ "corn with butter", "sand and pebbles", "cream and coffee", "dirt and sand" ]
C
An example of combining two substances is pouring one substance into the other substance
sciq
sciq_01_11228
What are indestructible and constantly in motion?
[ "ions", "atoms", "viruses", "crystals" ]
B
Atoms are indestructible and constantly in motion.
sciq
sciq_01_06851
Where does most water evaporate from?
[ "seas", "rivers", "oceans", "lakes" ]
C
Evaporation changes liquid water to water vapor. Energy from the Sun causes water to evaporate. Most evaporation is from the oceans because they cover so much area. The water vapor rises into the atmosphere.
sciq
sciq_01_04826
In eukaryotes, mrna may be modified before leaving what?
[ "mitochondria", "epidermis", "nucleus", "ribosome" ]
C
During transcription, a copy of mRNA is made that is complementary to a strand of DNA. In eukaryotes, mRNA may be modified before it leaves the nucleus.
math_qa
mathqa_03_01693
if x + y = 25 and x 2 y 3 + y 2 x 3 = 25 , what is the value of xy ?
[ "1", "2", "3", "4" ]
A
xy = 1 as x + y = 25 x 2 y 3 + y 2 x 3 = 25 x 2 y 2 ( y + x ) = 25 substituting x + y x 2 y 2 = 1 xy = 1 answer : a
sciq
sciq_01_00606
What can damage the hair cells lining the cochlea of the inner ear?
[ "amelodic sounds", "wavering sounds", "unexpected sounds", "loud sounds" ]
D
Loud sounds can damage the hair cells lining the cochlea of the inner ear. Explain how this might affect the ability to hear sound.
math_qa
mathqa_03_03555
one men and three women working 7 hours a day finish a work in 5 days . four men and four women working 3 hours a day complete the work in 7 days . the number of days in which only 7 men working 4 hours a day will finish the work is ?
[ "4 days", "5 days", "6 days", "7 days" ]
B
"1 m + 3 w - - - - - 35 h 4 m + 4 w - - - - - - - 21 h 7 m - - - - - - - ? d 35 m + 105 w = 84 m + 84 m 21 w = 49 m 4 * 35 = 7 * x = > x = 20 hours 20 / 4 = 5 days answer : b"
sciq
sciq_01_02725
What type of light can mosquitoes see?
[ "spicule", "infared", "trichina", "neon" ]
B
A: Some animals can see light in the infrared or ultraviolet range of wavelengths. For example, mosquitoes can see infrared light, which is emitted by warm objects. By seeing infrared light, mosquitoes can tell where the warmest, blood-rich areas of the body are located.
ARC-Challenge
arc_04_02635
A scientist has collected monthly population counts of three animal species in a forest for five years. To display this data, the scientist should use which of the following?
[ "a table", "a pie chart", "a line graph", "a scatterplot" ]
C
null
medmcqa
medmcqa_05_02600
Highest Contraceptive failure is repoed in
[ "Spermicidal methods", "Implant", "Oral contraceptive pills", "IUD" ]
A
- Spermicidal methods has pearl index of 10-25 / HWY ( Highest ). - Contain chemical - Non oxynol 9 - MOA - By rupture of plasma membrane of Acrosomal cap.
ARC-Easy
arc_04_01601
There are MORE hours of sunlight in the Northern Hemisphere during which season?
[ "spring", "summer", "fall", "winter" ]
B
null
sciq
sciq_01_11412
Alleles that carry deadly diseases are usually which type?
[ "inherited", "predominant", "dominant", "recessive" ]
D
sciq
sciq_01_08488
Proteins are one of four classes of what type of compounds?
[ "hormonal", "synthesized", "genetic", "biochemical" ]
D
Proteins are one of four classes of biochemical compounds. Proteins contain carbon, hydrogen, oxygen, nitrogen, and sulfur.
medmcqa
medmcqa_05_02859
Volume of air taken into the lungs in normal respiration is known as
[ "Vital capacity", "Timed vital capacity", "Tidal volume", "Inspiratory reserve volume" ]
C
Vital Capacity: Amount of air that can be exhaled with maximum effo after maximum inspiration. It is used to assess the strength of thoracic muscles as well as pulmonary function. Timed Vital Capacity: The fraction of the vital capacity expired during the first second of a forced expiration.Tidal volume: The amount of ...
math_qa
mathqa_03_02649
if one length of a square is tripled , and the original parameter is 4 y . what is the new length of one of the sides ?
[ "12 y / 3'", "2 y / 2'", "6 y / 3'", "12 y / 4'" ]
D
if the original parameter is 4 y , each length of the square is 4 y / 4 . if the parameter is tripled , then each length becomes 3 ( 4 y ) / 4 . this is 12 y / 4 . answer option d .
sciq
sciq_01_02546
Consisting of a stigma, style, and ovary, the pistil of a flower is what type of organ?
[ "female neural organ", "female respiratory organ", "female immune organ", "female reproductive organ" ]
D
The female reproductive organ in a flower is the pistil . It consists of a stigma, style, and ovary. The stigma is the top of the pistil. It is sticky to help it "catch" pollen. The style connects the stigma to the ovary. The ovary is where eggs form and seeds develop. As seeds develop, the ovary turns into a fruit . T...
math_qa
mathqa_03_00931
a works twice as fast as b . if b can complete a work in 12 days independently , the number of days in which a and b can together finish the work in :
[ "4 days", "6 days", "8 days", "18 days" ]
A
"explanation : ratio of rates of working of a and b = 2 : 1 . so , ratio of times taken = 1 : 2 . b ' s 1 day ' s work = 1 / 12 a ' s 1 day ' s work = 1 / 6 ; ( 2 times of b ' s work ) ( a + b ) ' s 1 day ' s work = ( 1 / 6 + 1 / 12 ) = 3 / 12 = 1 / 4 so , a and b together can finish the work in 4 days . answer is a"
openbookqa
obqa_02_04834
The only way for mammals to have a family is to
[ "steal children", "adopt", "lay eggs", "reproduce" ]
D
reproduction produces offspring
math_qa
mathqa_03_04354
a dog is tied to a tree by a long nylon cord . if the dog runs from the due north side of the tree to the due south side of the tree with the cord extended to its full length at all items , and the dog ran approximately 30 feet , what was the approximate length of the nylon cord e , in feet ?
[ "30", "25", "15", "10" ]
D
"because the cord was extended to its full length at all items , the dog ran along a semi - circular path , from north to south . the circumference of a full circle is 2 * pi * r , but since we only care about the length of half the circle , the semi - circle path is pi * r . e = pi * r = 30 . round pi = 3 , then r = 1...
math_qa
mathqa_03_00609
how long will it take a train travelling at 68 kmph to pass an electric pole if the train is 170 m long
[ "6.99", "5.99", "8.99", "4.99" ]
C
"sol . speed = [ 68 x 5 / 18 ] m / sec = 18.9 m / sec . time taken = ( 170 / 18.9 ) sec = 8.99 sec . answer c"
sciq
sciq_01_11085
Tissue is made up of layers of tightly packed cells that line the surfaces of the body, such as skin.
[ "resultant tissue", "weak tissue", "neural tissue", "epithelial tissue" ]
D
Epithelial tissue is made up of layers of tightly packed cells that line the surfaces of the body. Examples of epithelial tissue include the skin, the lining of the mouth and nose, and the lining of the digestive system.
medmcqa
medmcqa_05_03764
Mutation is seen in ?
[ "Polio virus", "Influenza virus", "Mumps virus", "Measles virus" ]
B
Ans. is 'b' i.e., Influenza virus A unique feature of the influenza virus is its ability to undergo antigenic variations. Antigenic variability is highest in influenza virus Type A and less in Type B, while it has not been demonstrated in type C. Surface antigens hemagglutinin and neurominidase, undergo independent ant...
medmcqa
medmcqa_05_03151
Drug of choice in case of Puberty menorrhagia:
[ "Progesterone", "OCP", "IUCD", "Endometrial curettage" ]
A
Ans. (a) ProgesteroneRef: Shaws 15th ed. 1303-304Puberty menorrhagia is anovulatory. Therefore our first line or DOC in puberty menorhhagia is cyclical progestin therapy.
openbookqa
obqa_02_03387
If you're stuck outside on a sunny day, the coolest place would be under a tree because they do what to the sunlight
[ "sell it", "climb it", "block it out", "smell it" ]
C
large trees block sunlight from reaching the ground
sciq
sciq_01_04942
What are reversible physical changes in matter called?
[ "alterations", "transformations", "chemical change", "changes of state" ]
D
Changes of state are physical changes in matter. They are reversible changes that do not change matter’s chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.
math_qa
mathqa_03_03509
the volume of the largest right circular cone that can be cut out of a cube of edge 7 cm is :
[ "89.8 cm ³'", "92.5 cm ³'", "132.8 cm ³'", "144.5 cm ³'" ]
A
sol . volume of the block = ( 10 * 5 * 2 ) cm ³ . volume of the cone carved out = [ 1 / 3 * 22 / 7 * 3 * 3 * 7 ] cm ³ = 66 cm ³ ∴ wood wasted = ( 100 - 66 ) % = 34 % . answer a
sciq
sciq_01_10639
What was the first widely used antibiotic?
[ "alcohol", "benadryl", "penicillin", "aspirin" ]
C
math_qa
mathqa_03_02571
the probability that event a occurs is 0.4 , and the probability that events a and b both occur is 0.25 . if the probability that either event a or event b occurs is 0.6 , what is the probability that event b will occur ?
[ "0.05", "0.15", "0.45", "0.5" ]
C
p ( a or b ) = p ( a ) + p ( b ) - p ( a n b ) 0.6 = 0.4 + p ( b ) - 0.25 p ( b ) = 0.45 answer : c
sciq
sciq_01_11150
What is the fertilization step in the sexual reproduction of plants?
[ "evolution", "Fornications", "hibernation", "pollination" ]
D
To research how characteristics are passed from parents to offspring, Mendel needed to control pollination. Pollination is the fertilization step in the sexual reproduction of plants. Pollen consists of tiny grains that are the male gametes of plants. They are produced by a male flower part called the anther (see Figur...
math_qa
mathqa_03_00628
3 investors , a , b , and c , divide the profits from a business enterprise in the ratio of 5 : 7 : 8 , respectively . if investor a earned $ 2500 , how much money did investors b and c earn in total ?
[ "$ 4,000", "$ 4,900", "$ 7,500", "$ 9,500" ]
C
let profit for a = 5 x profit for b = 7 x profit for c = 8 x investor a earned = 2500 5 x = 2500 = > x = 500 total profit for b and c = 7 x + 8 x = 15 x therefore , 15 x = 15 * 500 = 7,500 answer c
sciq
sciq_01_09397
In ovoviviparous fish like shark, what develops inside the mother’s body but without nourishment from the mother?
[ "eggs", "spores", "molecules", "genes" ]
A
Nearly all fish reproduce sexually, and most species have separate sexes. Those without separate sexes avoid self-fertilization by producing sperm and eggs at different times. Each fish typically produces a large number of gametes. In most fish species, fertilization takes place externally. These fish are oviparous. Eg...
sciq
sciq_01_08495
Which organisms capture light energy and convert it to chemical energy inside their cell?
[ "chloroplasts", "phototrophs", "sporozoans", "pores" ]
B
Phototrophs are organisms that capture light energy and convert it to chemical energy inside their cell. Most phototrophs are the autotrophs that perform photosynthesis, which are also known as photoautotrophs. These organisms have the ability to fix carbon from carbon dioxide into organic compounds, such as glucose. C...
math_qa
mathqa_03_00444
the mean of 50 observations was 36 . it was found later that an observation 90 was wrongly taken as 23 . the corrected new mean is ?
[ "37.3", "36.1", "36.5", "36.9" ]
A
"correct sum = ( 36 * 50 + 90 - 23 ) = 1867 . correct mean = 1825 / 50 = 37.3 answer : a"
sciq
sciq_01_08856
Some enzymes require the presence of a non-protein molecule to function properly. what is that molecule called?
[ "prothetic", "coenzymes", "substrate", "cofactor" ]
D
Some enzymes require the presence of a non-protein molecule called a cofactor in order to function properly. Cofactors can be inorganic metal ions or small organic molecules. Many vitamins, such as B vitamins, act as cofactors. Some metal ions which function as cofactors for various enzymes include zinc, magnesium, pot...
medmcqa
medmcqa_05_00471
A Poly A base sequence would be most likely found at the
[ "5' end of a prokaryotic messenger RNA (mRNA)", "3' end of a prokaryotic mRNA", "5' end of a eukaryotic mRNA", "3' end of a eukaryotic mRNA" ]
D
The addition of a poly A tail to the 3' end is one of the post-transcriptional modifications that occurs in the processing of eukaryotic messenger RNA (mRNA). A cap consisting of a guanosine derivative is attached to the 5' end. Intervening sequences (introns) are removed by splicing. All of these processing events occ...
sciq
sciq_01_02643
Condensation, melting, deposition, sublimation, vaporization, and freezing are all considered changes in what?
[ "density", "altitude", "speed", "state" ]
D
Changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter’s chemical makeup or chemical properties. Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization. These changes are shown in Figure below . Each is descr...
math_qa
mathqa_03_00423
the perimeter of a triangle is 20 cm and the inradius of the triangle is 3 cm . what is the area of the triangle ?
[ "22", "30", "77", "54" ]
B
"area of a triangle = r * s where r is the inradius and s is the semi perimeter of the triangle . area of triangle = 3 * 20 / 2 = 30 cm 2 answer : b"
medmcqa
medmcqa_05_03869
Luftsichel sign on chest radiograph is indicative of
[ "RUL collapse", "Combined RLL and RML collapse", "LUL collapse", "LLL collapse" ]
C
.
sciq
sciq_01_01125
The pull of the moon’s gravity on earth is the main cause of what water phenomenon?
[ "tides", "storms", "waves", "floods" ]
A
The figure below shows why tides occur ( Figure below ). The main cause of tides is the pull of the Moon’s gravity on Earth. The pull is greatest on whatever is closest to the Moon. Although the gravity pulls the land, only the water can move. As a result:.
math_qa
mathqa_03_00832
what is the value of x ^ 2 yz − xyz ^ 2 , if x = 2 , y = 1 , and z = 2 ?
[ "20", "24", "0", "32" ]
C
"4 * 1 * 2 - ( 2 * 1 * 4 ) = 8 + 8 = 0 ans : c"
sciq
sciq_01_06289
Plants produce their own sugars and other food molecules through what process?
[ "hydrogenesis", "photosynthesis", "glycolysis", "spermatogenesis" ]
B
sciq
sciq_01_06762
What are the cells that break down inorganic molecules to supply energy for the cell, and use carbon dioxide as a carbon source?
[ "staurikosaurus", "fluctuations", "Sediments", "chemoautotrophs" ]
D
Chemoautotrophs are cells that break down inorganic molecules to supply energy for the cell, and use carbon dioxide as a carbon source. Chemoautotrophs include prokaryotes that break down hydrogen sulfide (H 2 S the “rotten egg” smelling gas), and ammonia (NH 4 ). Nitrosomonas , a species of soil bacterium, oxidizes NH...
math_qa
mathqa_03_02018
gold is 19 times as heavy as water and copper is 9 times as heavy as water . in what ratio should these be mixed to get an alloy 16 times as heavy as water ?
[ "1 : 2", "7 : 3", "4 : 1", "5 : 2" ]
B
"g = 19 w c = 9 w let 1 gm of gold mixed with x gm of copper to get 1 + x gm of the alloy 1 gm gold + x gm copper = x + 1 gm of alloy 19 w + 9 wx = x + 1 * 16 w 19 + 9 x = 16 ( x + 1 ) x = 3 / 7 ratio of gold with copper = 1 : 3 / 7 = 7 : 3 answer is b"
sciq
sciq_01_08102
What do waves do when they are unable to pass through an object?
[ "develop off", "Roll over.", "produce off", "reflect off" ]
D
Waves may reflect off an obstacle that they are unable to pass through. When waves are reflected straight back from an obstacle, the reflected waves interfere with the original waves and create standing waves . These are waves that appear to be standing still. Standing waves occur because of a combination of constructi...
math_qa
mathqa_03_01687
what is the remainder when 43 ^ 88 is divided by 5 ?
[ "0", "1", "2", "3" ]
B
"the units digit of the exponents of 3 cycle in a group of 4 : { 3 , 9 , 7 , 1 } 88 has the form 4 k so the units digit of 43 ^ 88 is 1 . the remainder when dividing by 5 is 1 . the answer is b ."
medmcqa
medmcqa_05_04080
Which of the following measures The amount of fetal blood entering maternal circulation:
[ "Kleihauer - Betke test", "Singers test", "APT test", "Benedict test" ]
A
To know the exact amount of blood in maternal circulation,KLEIHAUER - BETKE test (acid elusion test)is done which is a quantitative test To distinguish between maternal and fetal blood in cases of vasa pre APT TEST is done which is a qualitative test. Benedict test is used for checking reducing sugars in the urine
medmcqa
medmcqa_05_01199
In a case of strangulated hernia management is :
[ "USG-abdomen", "X-ray abdomen", "Aspirate contents", "Immediate surgery" ]
D
Ans. is 'd' i.e. Immediate surgery
medmcqa
medmcqa_05_01343
The Finnish type of Congenital Nephritic syndrome occurs due to Gene mutation affecting the following protein
[ "Podocin", "Alpha-actinin", "Nephrin", "CD2 activated protein" ]
C
It occurs due to gene mutation NPHS 1 which encodes nephron and the protein is affected and results in massive protein loss , edema. Congenital nephrotic syndrome Finnish type is a genetic condition of the kidney that begins early in development during pregnancy or within the first three months of life. The syndrome is...
medmcqa
medmcqa_05_03799
Protein that precipitates on heating to 45 C and redissolves on boiling is
[ "Bence Jones Protein", "Gamma globulin", "Albumin", "Myosin" ]
A
Bence-Jones&; Protein An abnormal protein occurs in blood and urine of people suffering from a disease called multiple myeloma (a plasma cell tumour). Defined as monoclonal light chains present in the urine of patients with paraproteinaemic states. Either monoclonal `k&; or `l&; light chains are excreted in significant...
medmcqa
medmcqa_05_04125
Agglutination test is -
[ "ABO incompatibility", "VDRL", "Weil-felix test", "FTA-ABS" ]
C
Weil- Felix reaction for the diagnosis of typhus fever. - The Agglutination reaction is when a paiculate antigen is mixed with its antibody in the presence of electrolytes at a suitable temperature and pH, the paicles are clumped or agglutinated. Reference : Anathanarayan & paniker's 9th edition, pg no: 108,109 <\p>
math_qa
mathqa_03_00270
two stations a and b are 110 km apart on a straight line . one train starts from a at 5 a . m . and travels towards b at 20 kmph . another train starts from b at 8 a . m . and travels towards a at a speed of 25 kmph . at what time will they meet ?
[ "11", "10", "8", "12" ]
C
"suppose they meet x hours after 5 a . m . distance covered by a in x hours = 20 x km . distance covered by b in ( x - 1 ) hours = 25 ( x - 1 ) km . therefore 20 x + 25 ( x - 1 ) = 110 45 x = 135 x = 3 . so , they meet at 8 a . m . answer : c"
openbookqa
obqa_02_03933
If a mouse is running in a field with a fence that will provide a shock to those that touch it, and the mouse tries to climb up it, it will most likely
[ "keep doing it", "try it again", "be fatally injured", "enjoy the feeling" ]
C
electrocution causes harm to an organism
sciq
sciq_01_06478
The way in which the sun produces light is called what?
[ "rays", "incandescence", "tumescence", "photosynthesis" ]
B
Most of the visible light on Earth comes from the sun. The sun and other stars produce light because they are so hot. They glow with light due to their extremely high temperatures. This way of producing light is called incandescence . Incandescent light bulbs also produce light in this way. When electric current passes...
math_qa
mathqa_03_01712
guy drives 60 miles to attend a meeting . halfway through , he increases his speed so that his average speed on the second half is 16 miles per hour faster than the average speed on the first half . his average speed for the entire trip is 30 miles per hour . guy drives on average how many miles per hour during the fir...
[ "12", "14", "16", "24" ]
D
let x be the average speed for 1 st half of the distance . then the average speed for 2 nd half of the distance will be x + 16 avg speed = total distance / total time 30 = 60 / { ( 30 / x ) + ( 30 / ( x + 16 ) ) } solving we get x ^ 2 - 14 x - 240 = 0 x = - 10 or 24 x cant be negative hence x = 24 answer : d
math_qa
mathqa_03_02936
jane makes toy bears . when she works with an assistant , she makes 70 percent more bears per week and works 10 percent fewer hours each week . having an assistant increases jane ’ s output of toy bears per hour by what percent ?
[ "20 %", "80 %", "100 %", "180 %" ]
B
"we can use fractional equivalents here to solve the problem 80 % = 4 / 5 ; this means that in 1 st case if she prepares 5 bears , in 2 nd case she prepares 9 bears 10 % = 1 / 10 ; this means that in 1 st case if she needs 10 hours , in 2 nd case she needs 9 hours now we come to productivity based on above fractional v...
sciq
sciq_01_00724
Because microorganisms can go through several generations in a matter of hours, their gene expression profiles adapt to the new laboratory environment very quickly. in addition, the vast majority of bacterial species resist being cultured in this?
[ "isolation", "water", "substrate", "colonies" ]
A
Microbial Genomics: Metagenomics Traditionally, microbiology has been taught with the view that microorganisms are best studied under pure culture conditions, which involves isolating a single type of cell and culturing it in the laboratory. Because microorganisms can go through several generations in a matter of hours...
ARC-Challenge
arc_04_02386
Which pair of elements has the most similar properties?
[ "Li and B", "I and Ca", "K and He", "N and P" ]
D
null
medmcqa
medmcqa_05_03170
Suprasellar calcification with growth retardation is seen in
[ "Pineal body tumor", "Pituitory tumor", "Thalmic tumor", "Craniopharyngioma" ]
D
D i.e. Craniopharyngeoma
math_qa
mathqa_03_03758
one - seventh of the light switches produced by a certain factory are defective . 4 - fifths of the defective switches are rejected and 1 / 15 of the non defective switches are rejected by mistake . if all the switches not rejected are sold , what percent of the switches sold by the factory are defective ?
[ "2.3 %", "3.4 %", "4.5 %", "5.6 %" ]
B
1 / 7 of the switches are defective . the defective switches that are not rejected are 1 / 5 * 1 / 7 = 1 / 35 = 3 / 105 of all switches . the non defective switches that are sold are 6 / 7 * 14 / 15 = 84 / 105 of all switches . the percent of switches sold that are defective is 3 / 87 which is about 3.4 % . the answer ...
medmcqa
medmcqa_05_00016
In depression , there is deficiency of:
[ "5-HT", "Acetylcholine", "Dopamine", "GABA" ]
A
Ref: Katzung 14th ed. Monoamines like serotonin and nor-adrenaline are deficient in depressive patients, therefore reuptake inhibitors of these monoamines are used for treatment of depression.
openbookqa
obqa_02_02168
Sounds may travel through air where there is an atmosphere. Sounds that can travel include
[ "honking", "listening", "thinking", "sweating" ]
A
sound can travel through air
sciq
sciq_01_09661
What is the double-membrane structure that constitutes the outermost portion of the nucleus?
[ "nuclear fold", "energy envelope", "nuclear envelope", "energy fold" ]
C
The Nuclear Envelope The nuclear envelope is a double-membrane structure that constitutes the outermost portion of the nucleus ( Figure 4.11). Both the inner and outer membranes of the nuclear envelope are phospholipid bilayers. The nuclear envelope is punctuated with pores that control the passage of ions, molecules, ...
openbookqa
obqa_02_03025
The below surface pebbles of the columbia river are of non rough edges because of?
[ "rough rocks", "river movement", "smoothness", "fish movement" ]
B
rock is made of minerals
openbookqa
obqa_02_00249
Which of these animal traits is generally determined by environmental factors rather than heredity?
[ "eye color", "height", "hair length", "number of chromosomes" ]
C
the length of the hair of an animal is an acquired characteristic
openbookqa
obqa_02_04366
Ice melting erodes
[ "clouds", "plants", "granite", "rivers" ]
C
water causes the most soil and rock erosion
sciq
sciq_01_00294
Angiosperms are also known as what?
[ "flowering plants", "uncommon plants", "dry plants", "dead plants" ]
A
Introduction Plants are as essential to human existence as land, water, and air. Without plants, our day-to-day lives would be impossible because without oxygen from photosynthesis, aerobic life cannot be sustained. From providing food and shelter to serving as a source of medicines, oils, perfumes, and industrial prod...
math_qa
mathqa_03_03468
a person distributed 15 % of his income to his 3 children each . he deposited 30 % of his income to his wife ' s account . he donated 10 % of remaining amount to an orphan house . finally he has $ 40000 . find his total income ?
[ "a", "b", "c", "d" ]
A
3 children got = 3 * 15 % = 45 % wife got = 30 % orphan house = 10 % total = 45 + 30 + 10 = 85 % remaining = 100 - 85 = 15 % 15 % = 40000 100 % = 40000 * 100 / 15 = $ 266666.7 answer is a
openbookqa
obqa_02_02852
Water molecules descending from a high elevation in liquid form are known as
[ "brimstone", "fire", "hail", "rainfall" ]
D
precipitation is when water falls from the sky
sciq
sciq_01_06008
Maintaining a high metabolic rate takes a lot of what?
[ "calories", "energy", "food", "fuel" ]
B
Maintaining a high metabolic rate takes a lot of energy. The energy must come from food. Therefore, mammals need a nutritious and plentiful diet. The diets of mammals are diverse. Except for leaf litter and wood, almost any kind of organic matter may be eaten by mammals.
sciq
sciq_01_07495
During what in the small intestine do rings of smooth muscle repeatedly contract and then relax?
[ "compression", "contraction", "mitosis", "segmentation" ]
D
Mechanical Digestion in the Small Intestine The movement of intestinal smooth muscles includes both segmentation and a form of peristalsis called migrating motility complexes. The kind of peristaltic mixing waves seen in the stomach are not observed here. If you could see into the small intestine when it was going thro...
math_qa
mathqa_03_02376
sophia finished 23 of a book . she calculated that she finished 90 more pages than she has yet to read . how long is her book ?
[ "180", "200", "250", "270" ]
D
"let x be the total number of pages in the book , then she finished 23 ⋅ x pages . then she has x − 23 ⋅ x = 13 ⋅ x pages left . 23 ⋅ x − 13 ⋅ x = 90 13 ⋅ x = 90 x = 270 . so answer is d ."
sciq
sciq_01_05615
A mold is an imprint of an organism left in what?
[ "band", "rock", "magma", "fossil" ]
B
Fossils may form in other ways. With complete preservation, the organism doesn't change much. As seen below, tree sap may cover an organism and then turn into amber. The original organism is preserved so that scientists might be able to study its DNA. Organisms can also be completely preserved in tar or ice. Molds and ...
sciq
sciq_01_02786
The extracellular matrix of most animal cells contains abundant amounts of what protein, which helps hold things together?
[ "actin", "collagen", "keratin", "elastin" ]
B
Extracellular Matrix of Animal Cells Most animal cells release materials into the extracellular space. The primary components of these materials are proteins, and the most abundant protein is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. Collectively, thes...
sciq
sciq_01_01132
What is the only known planet with large amounts of water?
[ "earth", "mars", "jupiter", "saturn" ]
A
Earth is the third planet from the Sun. It is the only planet with large amounts of liquid water, and the only planet known to support life. Earth is the only inner planet that has a large round moon.
openbookqa
obqa_02_03068
What could be used to find out how much carpet is needed for a room?
[ "a tape measure", "a compass", "a barometer", "a beam balance" ]
A
a tape measure is used to measure distance
openbookqa
obqa_02_04873
When a creature experiences feeling, they are likely
[ "making really good choices", "taking the next train", "sensing a thing's texture", "dead from complete exhaustion" ]
C
feeling is when an living thing senses through touch
medmcqa
medmcqa_05_03740
Mesosomes are prokaryotic counterpart of eukaryotic:
[ "Mitochondria", "Endoplasmic reticulam", "Golgi apparatus", "Nucleus" ]
A
Ans: a (Mitochondria) Ref:Ananthanarayan, 7th ed, p. 13Mesosomes are principal sites of respiratory enzymes in bacteria and are analogous to mitochondria of eukaryotes.Mesosomes, (also called chondroids) are vesicular, convoluted or multilaminated structures formed as invaginations of the plasma membrane into the cytop...
ARC-Easy
arc_04_01505
Frog eggs hatch into tadpoles, and then tadpoles gradually develop into frogs. This process is known as
[ "adolescence.", "crossbreeding.", "regeneration.", "metamorphosis." ]
D
null
sciq
sciq_01_07339
Wearing what will reduce the amplitude of sound waves entering the ears?
[ "hardhat", "megaphone", "goggles", "hearing protectors" ]
D
Hearing loss due to loud sounds can be prevented by wearing hearing protectors. They reduce the amplitude of sound waves entering the ears.