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openbookqa
obqa_02_02963
A thing which ferns have in endless supply when expanding is
[ "oil", "dirt", "darkness", "castor" ]
B
soil is a renewable resource for growing plants
medmcqa
medmcqa_05_00614
Plasma half life of carbimazole -
[ "4 hours", "8 hours", "16 hours", "24 hours" ]
B
Ans. is 'b' i.e., 8 hours o Half life of propylthiouracil : 1-2 hours o Half life of carbimazole : 6-10 hours
sciq
sciq_01_02520
On what basis are lipoproteins classified?
[ "diameter", "mass", "weight", "density" ]
D
Other lipoproteins also transport lipids throughout the body, but different types of lipoproteins tend to serve different functions. We will discuss some of these differences in the section below on cholesterol and heart disease. Lipoproteins are often classified into five different groups based on their densities. In ...
openbookqa
obqa_02_01606
An example of an instinctive behavior could be
[ "wind", "fire", "revenge", "air" ]
C
An example of an instinctive behavior is a baby bird pecking at its shell to hatch
sciq
sciq_01_09697
What are all scientific explanations and interpretations based on?
[ "controls", "theories", "facts", "changes" ]
C
All scientific explanations and interpretations are based on facts.
medmcqa
medmcqa_05_03242
Blumberg's sign is
[ "Rebound tenderness during abdominal palpation", "Board-like rigidity of abdomen", "Pressure over left iliac fossa causing pain in right iliac fossa", "Pressure over right iliac fossa causing pain in left iliac fossa" ]
A
Positive Blumberg's sign or rebound tenderness or Release sign is indicative of peritonitis which can occur in diseases like appendicitis, perforated peptic ulcer and may occur in ulcerative colitis with rebound tenderness in the right lower quadrant etc. Rebound tenderness on abdominal palpation is d/t the fact that t...
math_qa
mathqa_03_03275
what is the probability of getting only 1 head in a single throw of four fair coins ?
[ "1 / 2", "3 / 8", "1 / 4", "1 / 5" ]
C
"one possible case is httt . p ( httt ) = 1 / 2 * 1 / 2 * 1 / 2 * 1 / 2 = 1 / 16 there are 4 c 1 = 4 possible cases . p ( 1 head ) = 4 * 1 / 16 = 1 / 4 the answer is c ."
openbookqa
obqa_02_01364
studying a soil sample means studying the microorganisms in the
[ "dirt", "air", "lava", "water" ]
A
studying a soil sample means studying the microorganisms in that soil
medmcqa
medmcqa_05_02581
Dalen Fuch lesion is seen in:
[ "Purulent keratitis", "Epidemic keratoconjunctivitis", "Retinoblastoma", "Sympathetic ophthalmitis" ]
D
Ans. Sympathetic ophthalmitis
ARC-Challenge
arc_04_02600
What most likely happens when a cold air mass comes into contact with a warm, moist air mass?
[ "The sky becomes clear.", "Rain or snow begins to fall.", "Cold air is pushed to high altitudes.", "Warm air is pushed to ground level." ]
B
null
math_qa
mathqa_03_01967
sandy is younger than molly by 18 years . if the ratio of their ages is 7 : 9 , how old is sandy ?
[ "42", "49", "56", "63" ]
D
"let sandy ' s age be 7 x and let molly ' s age be 9 x . 9 x - 7 x = 18 x = 9 sandy is 63 years old . the answer is d ."
sciq
sciq_01_07548
Kyphosis, lordosis, and scoliosis are all diseases involving improper curvature of which bodily structure (which is supposed to be curved in a certain way anyway)?
[ "spine", "aorta", "lungs", "femur" ]
A
During fetal development, the body is flexed anteriorly into the fetal position, giving the entire vertebral column a single curvature that is concave anteriorly. In the adult, this fetal curvature is retained in two regions of the vertebral column as the thoracic curve, which involves the thoracic vertebrae, and the s...
sciq
sciq_01_05727
A wave that consists of vibrating electric and magnetic fields is called what?
[ "thermal wave", "mechanical wave", "propagate wave", "electromagnetic wave" ]
D
An electromagnetic wave is a wave that consists of vibrating electric and magnetic fields. A familiar example will help you understand the fields that make up an electromagnetic wave. Think about a common bar magnet. It exerts magnetic force in an area surrounding it, called the magnetic field. You can see the magnetic...
openbookqa
obqa_02_04745
Which are in opposition for similar chow?
[ "cats and mice", "dogs and sycamores", "bears and salmon", "lions and hyenas" ]
D
if two animals have the same food source then those two animals compete for food
medmcqa
medmcqa_05_03118
Tomato ketchup retina is seen in -
[ "Cental retinal artery occlusion", "Central retinal vein occlusion", "Coats disease", "Side cell retinopathy" ]
B
Ans. is 'b' i.e. Central retinal vein occlusion o Tomato ketchup or splash tomato fundus is seen in central retinal vein occlusion.
sciq
sciq_01_07341
What type of energy is produced when two objects move together?
[ "potential energy", "molecular energy", "mechanical energy", "physical energy" ]
C
ARC-Easy
arc_04_00171
Which sense is used to tell if there is sugar in a glass of tea?
[ "Touch", "Hearing", "Smell", "Taste" ]
D
null
math_qa
mathqa_03_01228
a man sold 20 articles for $ 60 and gained 20 % . how many articles should he sell for $ 80 to incur a loss 20 % ?
[ "45", "36", "40", "50" ]
C
"production cost per article : $ 60 * ( 100 % - 20 % ) / 20 = $ 2.40 required production costs for a loss of 20 % : $ 80 * ( 100 % + 20 % ) = $ 96 number of articles to be sold for $ 96 to incur a 20 % loss : $ 96 / $ 2.40 = 40 thus , solution c is correct ."
medmcqa
medmcqa_05_00431
Burden of malaria is best estimated by ?
[ "Mosquito rate", "API", "Parasite rate", "SPR" ]
B
Ans. is 'b' i.e., API o API is a sophasticated measure of malaria incidence in a community. o Areas with API 2/1000 population per year have been classified as high risk area in India and thereby eligible for vector control.
medmcqa
medmcqa_05_01496
Recurrent corneal erosion seen in:
[ "Corneal dystrophy", "Keratoglobus", "Keratoconus", "Peutz-anaomalies" ]
A
Ans. Corneal dystrophy
ARC-Easy
arc_04_00209
Which of these statements about nonrenewable resources is true?
[ "They are inexpensive.", "They help keep the air clean.", "They can take millions of years to form.", "They are used because they are easily removed from the ground." ]
C
null
sciq
sciq_01_06420
Graphite and diamond both are made from carbon. what makes diamonds so hard?
[ "strong metallic network", "strong atomic network", "weak atomic network", "strong light network" ]
B
Sometimes two different minerals have the same chemical composition. But they are different minerals because they have different crystal structures. Diamonds are beautiful gemstones because they are very pretty and very hard. Graphite is the “lead” in pencils. It's not hard at all! Amazingly, both are made just of carb...
medmcqa
medmcqa_05_04063
Mandible is derived from ?
[ "Meckle's cailage", "Ritchers cailage", "4th Pharyngeal pouch", "6th Pharyngeal pouch" ]
A
Ans. is 'a' i.e., Meckle's cailageEach half of the mandible ossifies from only one centre which appears at about the 6th week of intrauterine life in the mesenchymal sheath of Meckels cailage near the future mental foramen. Meckle's cailage is the skeletal element of first pharyngeal arch.
math_qa
mathqa_03_02731
in feb mrs bil ' s earnings were 70 percent of the bil family ' s total income . in june mrs bil earned 10 percent more than in may . if the rest of the family ' s income was the same both months , then , in june , mrs bil ' s earnings were approximately what percent of the bil family ' s total income ?
[ "72", "34", "78", "37" ]
A
lets say the family income is 100 in may , bil earned 70 family income is 30 in june , bil earned 10 % more than may , so it is ( 70 + 10 * 70 / 100 = 77 ) family income is same 30 in june bil ' s income percent is 77 * 100 / 107 ~ 72 ans is a
math_qa
mathqa_03_03834
a bag contains 3 blue and 5 white marbles . one by one , marbles are drawn out randomly until only two are left in the bag . what is the probability c that out of the two , one is white and one is blue ?
[ "15 / 56", "41 / 56", "13 / 28", "15 / 28" ]
D
"the required probability c = probability of choosing 6 balls out of the total 8 in such a way that we remove 4 out of 5 white and 2 out of 3 blue balls . ways to select 6 out of total 8 = 8 c 6 ways to select 4 out of 5 white balls = 5 c 4 ways to select 2 out of 3 blue balls = 3 c 2 thus the required probability = ( ...
math_qa
mathqa_03_02558
set a consists of the integers from 3 to 12 , inclusive , while set b consists of the integers from 6 to 20 , inclusive . how many distinct integers do belong to the both sets at the same time ?
[ "5", "7", "8", "9" ]
B
"a = { 3,4 , 5,6 , 7,8 , 9,10 , 11,12 } b = { 6 , 7,8 , 9,10 , 11,12 . . . } thus we see that there are 7 distinct integers that are common to both . b is the correct answer ."
openbookqa
obqa_02_01972
Sedimentary rock may be a result of
[ "metal", "old silt", "grass", "hay" ]
B
nearly all fossils are found in sedimentary rock
sciq
sciq_01_04425
Addiction affects what type of chemical receptors within the brain?
[ "mitochondria receptors", "bind receptors", "serotonin receptors", "dopamine receptors" ]
D
Figure above shows the accumulation of radioactive compounds that bind to dopamine receptors. The non-addicted individuals have large numbers of receptors for dopamine. The addicted persons show less binding to these receptors, indicating that fewer receptors are present.
math_qa
mathqa_03_03588
find the value of 1 / ( 3 + 1 / ( 3 + 1 / ( 3 - 1 / 3 ) ) ) ?
[ "13 / 89", "15 / 87", "27 / 89", "27 / 87" ]
C
"1 / [ 3 + ( 1 / ( 3 + 1 / ( 3 - 1 / 3 ) ) ) ] = > 1 / [ 3 + 1 / ( 3 + 1 / ( 8 / 3 ) ) ] = > 1 / [ 3 + 1 / ( 3 + 3 / 8 ) ] = > 1 / [ 3 + 8 / 27 ] = > 1 / ( 89 / 27 ) = > 27 / 89 c )"
medmcqa
medmcqa_05_01744
Gustafson's method is most useful for: AP 07
[ "16 years", "18 years", "21 years", "> 25 years" ]
D
Ans. > 25 years
sciq
sciq_01_02536
Burning forests, growing rice and raising livestock all cause a release of what into the atmosphere?
[ "oxide gases", "carbonate gases", "greenhouse gases", "glucose gases" ]
C
Burning forests also releases carbon dioxide into the atmosphere. Other human activities release greenhouse gases into the atmosphere. For example, growing rice and raising livestock both produce methane.
sciq
sciq_01_01288
What is the process of producing eggs in the ovary is called?
[ "oogenesis", "gametogenesis", "morphogenesis", "meiosis" ]
A
The process of producing eggs in the ovary is called oogenesis. Eggs, like sperm, are haploid cells, and their production occurs in several steps that involve different types of cells, as shown in Figure below . You can follow the process of oogenesis in the figure as you read about it below.
ARC-Easy
arc_04_01701
Water that is used to cool nuclear power plants can be released into water bodies, causing an area called a thermal plume. A thermal plume can be 12-18°C warmer than surrounding waters. Although some fish may be attracted to the warmer water, other organisms may not be able to survive. Government officials order a stud...
[ "pH", "dissolved oxygen", "nutrient concentration", "turbidity" ]
B
null
openbookqa
obqa_02_02183
A person may find that iron attracts other items such as
[ "plastic toys", "broken bottles", "grass stains", "wire braces" ]
D
metal is sometimes magnetic
math_qa
mathqa_03_00715
the average height of 35 boys in a class was calculated as 181 cm . it has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm . find the actual average height of the boys in the class ( round off your answer to two decimal places ) . ?
[ "178.27 cm", "179.29 cm", "978.29 cm", "178.89 cm" ]
B
"calculated average height of 35 boys = 181 cm . wrong total height of 35 boys = 181 * 35 cm . this was as a result of an actual height of 106 cm being wrongly written as 166 cm . correct total height of 35 boys = 181 cm - ( 166 cm - 106 cm ) / 35 = 181 cm - 60 / 35 cm = 181 cm - 1.71 cm = 179.29 cm . answer : b"
sciq
sciq_01_00599
Like other bryophytes, moss plants spend most of their life cycle as?
[ "spores", "gametophytes", "copepods", "bacteriophages" ]
B
Like other bryophytes, moss plants spend most of their life cycle as gametophytes. Find the sporophyte in the diagram. Do you see how it is growing on the gametophyte plant?.
sciq
sciq_01_06140
What is defined as superheated gas with a positive electrical charge?
[ "ion", "plasma", "supernova", "greenhouse gas" ]
B
The Sun is made mostly of plasma. Plasma is superheated gas with a positive electrical charge.
sciq
sciq_01_02043
The earliest vertebrates were jawless what?
[ "mammals", "dinosaurs", "fish", "reptiles" ]
C
The earliest vertebrates were jawless fish. They evolved about 550 million years ago. They were probably similar to modern hagfish (see Table above ). The tree diagram in Figure below summarizes how vertebrates evolved from that time forward.
ARC-Challenge
arc_04_02516
Which of these is one similarity of the elements in the first group of the periodic table?
[ "The elements in the group have similar atomic masses.", "The elements in the group have the same number of electrons.", "The elements in the group are very unreactive metals.", "The elements in the group react with oxygen in similar ways." ]
D
null
math_qa
mathqa_03_04811
you have been given a physical balance and 7 weights of 45 , 50 , 53 , 46 , 52 , 46 and 80 kgs . keeping weights on one pan and object on the other , what is the maximum you can weigh less than 188 kgs .
[ "183", "185", "182", "184" ]
B
"80 + 52 + 53 = 185 answer : b"
math_qa
mathqa_03_01033
a 40 gallon solution of salt and water is 10 % salt . how many gallons of water must be added to the solution in order to decrease the salt to 8 % of the volume ?
[ "810", "12", "13", "14" ]
A
"amount of salt = 4.0 assume x gallons of water are added . 4.0 / 40 + x = 8 / 100 400 = 8 x + 320 8 x = 80 x = 10 correct option : a"
math_qa
mathqa_03_00094
jaclyn buys $ 40 000 worth of debentures in a company . she earns 9.5 % p . a . simple interest , paid to her quarterly ( that is , every 3 months ) . if the agreed period of the debenture was 18 months : calculate the amount of interest jaclyn will earn for each quarter
[ "950", "1234", "1289", "1345" ]
A
"explanation : i = ( p x r x t ) / 100 = 40000 * 9.5 / 100 * ( 18 / 12 ) ^ 1 / 6 = 950 answer : a"
sciq
sciq_01_01882
What is the science that describes the ancestral and descendant connections between organisms?
[ "organic science", "phylogeny", "polygamy", "experimentally" ]
B
Building Phylogenetic Trees with Analysis of DNA Sequence Alignments All living organisms display patterns of relationships derived from their evolutionary history. Phylogeny is the science that describes the relative connections between organisms, in terms of ancestral and descendant species. Phylogenetic trees, such ...
sciq
sciq_01_10656
Memory t cells are long-lived and can even persist for how long?
[ "days", "eons", "minutes", "lifetime" ]
D
The Cellular Basis of Immunological Memory As already discussed, one of the major features of an adaptive immune response is the development of immunological memory. During a primary adaptive immune response, both memory T cells and effector T cells are generated. Memory T cells are long-lived and can even persist for ...
ARC-Easy
arc_04_02093
Why is a healthy diet important?
[ "It maintains a constant body temperature.", "It prevents damage to internal organs.", "It makes oxygen for all the cells in the body.", "It supplies the body’s needs for growth and energy." ]
D
null
math_qa
mathqa_03_04128
what is the value of ( 2 ) ^ - 6 ?
[ "1 / 62", "1 / 64", "1 / 65", "1 / 66" ]
B
"2 ^ - 6 = 1 / ( 2 ) ^ 6 = 1 / 64 answer : b"
sciq
sciq_01_11346
What do nearly all animals have in common with regards to digestion?
[ "problematic digestion of food", "external digestion of food", "internal digestion of food", "complete digestion of food" ]
C
Virtually all animals have internal digestion of food. Animals consume other organisms and may use special tissues and organs to digest them. (Many other organisms absorb nutrients directly from the environment. ).
openbookqa
obqa_02_00564
Which of these would absorb more sunlight
[ "A cave", "A octopus", "A bat", "An elephant Ear" ]
D
as the size of a leaf increases , the amount of sunlight absorbed by that leaf will increase
math_qa
mathqa_03_00846
perimeter of the back wheel = 9 feet , front wheel = 7 feet on a certain distance , the front wheel gets 10 revolutions more than the back wheel . what is the distance ?
[ "315", "325", "335", "345" ]
A
for 1 revolution : front wheel goes 7 ft . and back wheel goes 9 feet . let distance is x feet . x / 7 = ( x / 9 ) + 10 or , 2 x / 63 = 10 or , x = ( 10 * 63 ) / 2 therefore , x = 315 answer : a
math_qa
mathqa_03_01227
the total circumference of two circles is 25 . if the first circle has a circumference that is exactly twice the circumference of the second circle , then what is the approximate sum of their two radii ?
[ "5.7", "6.0", "4.0", "9.7" ]
C
"let r = radius of smaller circle . let r = radius of larger circle therefore : 2 π r + 2 π r = 25 where 2 r = r thus : 2 π r + 4 π r = 25 6 π r = 25 r = approx 1.33 π r + 2 r π = 25 3 π r = 25 r = approx 2.65 r + r = approx 3.98 = 4.0 answer : c"
sciq
sciq_01_03514
What structure of the body falls between cells and organs in complexity?
[ "proteins", "tissues", "muscles", "molecules" ]
B
The human body is organized at different levels, starting with the cell. Cells are organized into tissues, and tissues form organs. Organs are organized into organ systems such as the skeletal and muscular systems.
sciq
sciq_01_09168
What is the color of mercury(ii) oxide?
[ "green", "copper", "blue", "red" ]
D
Mercury(II) oxide is a red solid. When it is heated to a temperature above 500°C, it easily decomposes into mercury and oxygen gas. The red color of the mercury oxide reactant becomes the silver color of mercury. The color change is the sign that the reaction is occurring.
ARC-Challenge
arc_04_02242
The Late Heavy Bombardment was a period of extensive comet impact on Earth about 3.8 billion years ago. Scientists believe this period provided much of the matter now found in which part of the Earth system?
[ "core", "mantle", "atmosphere", "hydrosphere" ]
D
null
sciq
sciq_01_06075
Where is urine formed in the body?
[ "the liver", "the pancreas", "the lungs", "the kidneys" ]
D
Urine is a liquid that is formed by the kidneys when they filter wastes from the blood. Urine contains mostly water, but it also contains salts and nitrogen-containing molecules. The amount of urine released from the body depends on many things. Some of these include the amount of fluid and food a person consumes and h...
math_qa
mathqa_03_04050
how many 3 - digit even numbers are possible such that if one of the digits is 5 , the next / succeeding digit to it should be 6
[ "5", "305", "365", "405" ]
A
560 , 562 , 564 , 566 , and 568 , so total 5 . hence option a .
sciq
sciq_01_03969
Chemical energy is another form of which energy?
[ "potential energy", "nuclear energy", "heat energy", "mechanical energy" ]
A
Chemical energy and nuclear energy are other forms of potential energy.
sciq
sciq_01_07827
Photosynthesis requires light, water and what else?
[ "carbon dioxide", "soil", "seasons", "nitrogen" ]
A
Plants are somewhat limited by temperature in terms of where they can grow. They need temperatures above freezing while they are actively growing. They also need light, carbon dioxide, and water. These substances are required for photosynthesis. Like most other living things, plants need oxygen. Oxygen is required for ...
math_qa
mathqa_03_04925
a person spends 1 / 3 rd of the money with him on clothes , 1 / 5 th of the remaining on food and 1 / 4 th of the remaining on travel . now , he is left with rs 400 . how much did he have with him in the beginning ?
[ "s 200", "s 1000", "s 300", "s 450" ]
B
"suppose the amount in the beginning was rs ’ x ’ money spent on clothes = rs 1 x / 3 balance = rs 2 x / 3 money spent on food = 1 / 5 of 2 x / 3 = rs 2 x / 15 balance = 2 x / 3 - 2 x / 15 = rs 8 x / 15 money spent on travel = 1 / 4 of 8 x / 15 = rs 2 x / 15 = 8 x / 15 - 2 x / 15 = 6 x / 15 = rs 2 x / 5 therefore 2 x /...
sciq
sciq_01_01671
The rock of the mantle is mostly what?
[ "silicon", "crystalline", "peridotite", "metamorphic" ]
C
The rock of the mantle is mostly peridotite. Peridotite is formed of crystals of olivine (green) and pyroxene (black).
medmcqa
medmcqa_05_01256
A male neonate is born with an omphalocele. This entity can be distinguished from gastroschisis, because in an omphalocele, the protrusion is:
[ "Not covered by a sac", "A defect in the abdominal musculature", "Associated with Intestinal atresia", "Associated with congenital malformations" ]
D
Abdominal wall defects Omphalocele- Intestine fails return to the intra-abdominal cavity- Covered by 2 layers* Amnion* Peritoneum- For Small defect - Protrusion of small amounts of bowel- For Large defect - Protrusion of small bowel along with liver- Associated with Trisomy 13, 18, 21- Associated with congenital malfor...
sciq
sciq_01_09921
What is a carbon-based compound that is found in living things called?
[ "biochemical compound", "biological compound", "genetic compound", "organic compound" ]
A
Glucose is an example of a biochemical compound. The prefix bio- comes from the Greek word that means “life. ” A biochemical compound is any carbon-based compound that is found in living things. Biochemical compounds make up the cells and tissues of living things. They are also involved in all life processes, including...
sciq
sciq_01_09999
What is the general shape of centrioles?
[ "arc", "oval", "spherical", "rod" ]
D
Centrioles are rod-like structures made of short microtubules. Though they are found in most eukaryotic cells, centrioles are absent in some plants and most fungi.
sciq
sciq_01_06427
Liquids that mix with water in all proportions are usually polar substances or substances that form these?
[ "atmospheric bonds", "hydrogen bonds", "silicon bonds", "compressed bonds" ]
B
Liquids that mix with water in all proportions are usually polar substances or substances that form hydrogen bonds. For such liquids, the dipole-dipole attractions (or hydrogen bonding) of the solute molecules with the solvent molecules are at least as strong as those between molecules in the pure solute or in the pure...
math_qa
mathqa_03_03558
find the 12 th term of an arithmetic progression whose first term is 2 and the common difference is 8 .
[ "45", "38", "44", "90" ]
D
"n th term of a . p = a + ( n - 1 ) * d = 2 + ( 12 - 1 ) * 8 , = 2 + 88 = 90 . answer : d"
math_qa
mathqa_03_02247
the area of a parallelogram is 162 sq m and its altitude is twice the corresponding base . then the length of the base is ?
[ "8", "9", "7", "62" ]
B
"2 x * x = 162 = > x = 9 answer : b"
ARC-Challenge
arc_04_02976
Carbon on Earth is found in both living and nonliving matter. In order for carbon to be continuously available, it must be recycled. Through which process is carbon made available in the atmosphere?
[ "formation of fossil fuels", "layering of soil", "plant photosynthesis", "forest fires" ]
D
null
medmcqa
medmcqa_05_03807
Which is not an intermediate filament?
[ "Desmin", "Vimentin", "Tubulin", "Keratin" ]
C
Intermediate filaments - resist external pressure cell type specific: used as cellular markers Types Nuclear(Lamin-A,B,C) Vimentin like (Vimentin, desmin, GFAP, peripherin) Epithelial(Types 1,2 keratin) Axonal( Neurofilament proteins- NF-L,M,H)
openbookqa
obqa_02_00488
Over a period of years in direct heat and sunlight, a large boulder may be
[ "frozen", "catapulted", "ravaged", "rotted" ]
C
being exposed to heat can cause erosion of rocks
openbookqa
obqa_02_00202
coal is a resource that
[ "constructs with difficulty", "makes everything sanitary", "shines in light", "cools the air" ]
A
coal is a nonrenewable resource
medmcqa
medmcqa_05_00008
Meckel's diveiculum is a remnant of:
[ "Stenson's duct", "Wolffian duct", "Mullerian duct", "Vitellointestinal duct" ]
D
D i.e. Vitellointestinal duct- Persistence of small poion of vitelline duct or yolk stalkQ remnant is called meckel's diveiculum or ileal diveiculum.Reduction of physiological hernia occurs at 10 weeks of embryonic periodQ
sciq
sciq_01_07744
In which way to vertebrates reproduces?
[ "anally", "sexually", "asexually", "biologically" ]
B
Vertebrates reproduce sexually. Most have separate male and female sexes. Vertebrates have one of three reproductive strategies: ovipary, ovovivipary, or vivipary.
medmcqa
medmcqa_05_03759
A patie-tt has undergone total thyroidectomy for papillary carcinoma of thyroid. Marker for follow-up of such a patient is: March 2011
[ "Thyroglobulin", "Calcitonin", "TSH", "Serum iodine levels" ]
A
Ans. A: ThyroglobulinThe measurement of serum thyroglobulin is of value in the follow-up and detection of metastatic disease in patients who have undergone surgery for differentiated thyroid carcinomaDifferentiated thyroid carcinoma includes follicular and papillary neoplasmsThyroid carcinoma which is:MC type: Papillar...
math_qa
mathqa_03_02249
nicky and cristina are running a race . since cristina is faster than nicky , she gives him a 48 meter head start . if cristina runs at a pace of 5 meters per second and nicky runs at a pace of only 3 meters per second , how many seconds will nicky have run before cristina catches up to him ?
[ "15 seconds", "18 seconds", "24 seconds", "30 seconds" ]
C
"used pluging in method say t is the time for cristina to catch up with nicky , the equation will be as under : for nicky = n = 3 * t + 48 for cristina = c = 5 * t @ t = 24 , n = 120 c = 120 right answer ans : c"
openbookqa
obqa_02_01219
if two things seemingly come closer together without a person interfering, which of these is likely?
[ "the objects are possessed", "the objects could have magnetic properties", "the sun is rising", "all of these" ]
B
magnetic attraction pulls two objects together
sciq
sciq_01_03566
Competition with what emerging animal group may have led to extinction of cynodonts about 200 million years ago?
[ "amphibians", "reptiles", "mammals", "insects" ]
C
Cynodonts probably gave rise to mammals about 200 million years ago. However, they are not considered to be mammals themselves. In fact, competition with early mammals may have led to their extinction. They went extinct sometime during the Jurassic or Cretaceous Period.
medmcqa
medmcqa_05_00821
Liquefactive necrosis occurs in
[ "Lung", "Brain", "Liver", "Spleen" ]
B
i.e. (Brain): (45-Harsh mohan 6th) (15-129- Robbins & Cotran 8th)LIQUEFACTIVE (COLLIQUATIVE) NECROSIS - occurs commonly due to ischaemic injury and bacterial or fungal infections* It occurs due to degradation of tissue by the action of powerful hydrolytic enzyme.* Common examples are Infarct brain and abscess cavity* D...
sciq
sciq_01_09303
Exposure to what is the most common cause of hearing loss?
[ "Guitar", "angry sounds", "outside sounds", "loud sounds" ]
D
The most common cause of hearing loss is exposure to loud sounds. Loud sounds damage hair cells in the ear that are needed for hearing. Louder sounds damage hair cells more quickly than softer sounds.
math_qa
mathqa_03_04978
a child want to buy 5 new toys . if there are 15 toys that satisfy the child ' s criteria , in how many different ways can the child select the 5 new toys if the order of selection does n ' t matter .
[ "210", "1365", "3003", "5005" ]
C
the number of ways of choosing 5 toys out of 15 are counted by = 15 c 5 ways = 3003 answer : option c
openbookqa
obqa_02_03480
If you eat a lot of chicken your body has what it needs to
[ "tell the weather", "fix wounds", "grow feathers", "fly" ]
B
protein is used to repair cells by the human body
sciq
sciq_01_00717
Millipedes and centipedes are the most commonly found examples of what group of arthropods?
[ "Disperse Myriapoda", "subphylum myriapoda", "unicellular myriapoda", "protists myriapoda" ]
B
Subphylum Myriapoda includes arthropods with legs that may vary in number from 10 to 750. This subphylum includes 13,000 species; the most commonly found examples are millipedes and centipedes. All myriapods are terrestrial animals and prefer a humid environment (Figure 15.21).
sciq
sciq_01_10495
Where are protons and neutrons located?
[ "nucleus", "epidermis", "electron shell", "radius" ]
A
Unlike protons and neutrons, which are located inside the nucleus at the center of the atom, electrons are found outside the nucleus. Because opposite electric charges attract each other, negative electrons are attracted to the positive nucleus. This force of attraction keeps electrons constantly moving through the oth...
medmcqa
medmcqa_05_00588
The commonest cause of lung abscess -
[ "Tuberculosis", "Congenital", "Hematogenous", "Aspirated oropharyngeal secretion" ]
D
​Lung abscess  The term pulmonary abscess describes a local suppurative process within the lung, characterized by necrosis of lung tissues. Etiology Aspiration is the most common cause, factors that portend an increased risk of aspiration include esophageal dysmotility, seizure disorders, and neurological condition...
openbookqa
obqa_02_01048
Light that can burn skin is produced by a
[ "flashlight", "laser", "light bulb", "fluorescent light" ]
B
a laser is used for producing light
openbookqa
obqa_02_01270
An iron horseshoe with red stripes is held over a paperclip and
[ "melts it", "drops it", "burns it", "yanks it" ]
D
a magnet attracts magnetic metals through magnetism
medmcqa
medmcqa_05_04597
Treatment of leukoplakia -
[ "Local excision", "Excision and radiotherapy", "Topical chemotherapy", "Repositioning of ill fitting dentures" ]
D
Treatment of oral leukoplakia Usually, all that is needed for the treatment of oral leukoplakia is just to remove the source of the irritation. If leukoplakia is caused by a rough edge of a tooth, filling or crown or by a denture that does not fit properly, the surface should be smoothed and the dental appliances rep...
ARC-Challenge
arc_04_02681
Which form of water is most likely to appear when the temperature is below freezing?
[ "fog", "rain", "snow", "clouds" ]
C
null
math_qa
mathqa_03_02614
the sum of number of boys and girls in a school is 900 . if the number of boys is x , then the number of girls becomes x % of the total number of students . the number of boys is ?
[ "50", "40", "60", "90" ]
D
we have x + x % of 900 = 900 x + x / 100 * 900 = 900 10 * x = 900 x = 90 answer is d
openbookqa
obqa_02_03830
A bee is a pollinating
[ "moving alive thing", "rock", "tree", "song" ]
A
A bee is a pollinating animal
medmcqa
medmcqa_05_04149
Commonest complication of Zenker&;s diveiculum is
[ "Dysphonia", "Gastroesophageal reflux", "Lung abscess", "Perforation" ]
C
Commonest complications are lung abcess and pneumonia. It occurs because of Regurgitation during night while turning neck. Othercomplications are abscess in the neck due to infection in the pouch, Carcinoma, Weight loss and cachexia. Reference: SRB's Manual of Surgery, 6th Edition, page no=422
medmcqa
medmcqa_05_00003
An 8-year old boy presents with swelling in mid-thigh region. On examination, femoral thickening was found with Codman's triangle. On aspiration, greyish white liquid was aspirated that showed atypical round cells with MIC-2 positivity. The most likely diagnosis is
[ "Osteosarcoma", "Ewing's sarcoma", "Tubercular osteomyelitis", "Pyogenic osteomyelitis" ]
B
Ans. b. Ewing's sarcoma Ewing's sarcoma: A type of primitive neuroectodermal tumour (PNET) On histopathological examination shows small round cells, which show positive immunohistochemical staining or CD-99 and MIC-2 gene Although the classical periosteal reaction seen in Ewing's sarcoma is onion peel appearance but so...
sciq
sciq_01_05103
Plants and algae maintain the atmosphere. during photosynthesis, they add oxygen and remove what?
[ "carbon dioxide", "nitrogen", "water", "methane" ]
A
Plants and algae maintain the atmosphere. During photosynthesis, they add oxygen and remove carbon dioxide.
sciq
sciq_01_06001
What planet in our solar system has a moon with volcanic activity?
[ "Venus", "jupiter", "Mars", "Saturn" ]
B
Earth is not the only active planetary body in the solar system. Io, one of Jupiter’s moons, is home to fantastic volcanic eruptions. Volcanism is much hotter than on Earth. Lava curtains and fountains are common. In this color image, the Galileo spacecraft spotted two volcanic plumes. One is spewing high above the pla...
sciq
sciq_01_09450
Biodiversity hot spots are prime candidates for protection because they are prone to what species fate?
[ "extinction", "reduction", "mutation", "accumulation" ]
A
sciq
sciq_01_07870
What can be hard or even impossible to perform in a scientific sense?
[ "experiments", "hypothesises", "theorys", "idea" ]
A
Experiments are sometimes hard or even impossible to do. For example, a scientist who is studying an extinct animal cannot experiment with the animal because it no longer exists. The scientist must rely instead on evidence in the natural world, such as fossils that the extinct animal left behind.
openbookqa
obqa_02_02400
A bear that has great strength, when compared to a bear with little strength, will likely be
[ "sickly", "objectively fit", "malnourished", "in poor health" ]
B
being stronger usually has a positive impact on an organism 's health
sciq
sciq_01_10078
What elements do lipids primarily consist of?
[ "iron, hydrogen , and oxygen", "carbon, hydrogen, and oxygen", "silicon, hydrogen , and oxygen", "helium, hydrogen , and oxygen" ]
B
Lipids are organic compounds that contain mainly carbon, hydrogen, and oxygen. They include substances such as fats and oils, as well as waxes, sterols, some vitamins (A, D, E and K) and phospholipids. Lipid molecules consist of fatty acids, with or without additional molecules. Fatty acids are organic compounds that h...
openbookqa
obqa_02_03831
If a creature is looking for things but is using something other than its eyes or nose, then it is likely
[ "condensing", "echolocating", "reproducing", "revolving" ]
B
echolocation is when some animals detect objects by hearing echoes by emitting sound
medmcqa
medmcqa_05_03991
In treatment of Pseudomonas infections, carbencillin is frequently combined with:
[ "Penicillin", "Gentamycin", "Ciprofloxacin", "Amoxycillin" ]
B
Gentamycin
sciq
sciq_01_08225
What mainly gives the body energy?
[ "water", "fuel", "food", "sunlight" ]
C
Food gives the body energy. You need energy for everything you do. The energy in food is measured in a unit called the Calorie.
sciq
sciq_01_07302
What do some animals use for shelter?
[ "invisible materials", "nonliving materials", "indestructible materials", "living materials" ]
B