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openbookqa
obqa_02_04908
A thing that may assist a living being in prolonging life is
[ "making bad decisions", "quitting when tired", "calibrating to changes", "living in danger" ]
C
adaptations are used for survival
ARC-Easy
arc_04_01826
How do most fish get the oxygen they need to survive?
[ "They take in water and break it down into hydrogen and oxygen.", "Using their gills, they take in oxygen that is dissolved in water.", "They get their oxygen from the food they eat.", "They come to the surface every few minutes to breathe air into their lungs." ]
B
null
ARC-Easy
arc_04_00429
During its lifetime, which object is known to change in brightness, color, and temperature?
[ "star", "moon", "asteroid", "planet" ]
A
null
medmcqa
medmcqa_05_02738
A patient using contact lens develops corneal infection. Laboratory diagnosis of acanthomoeba keratitis was established. The following is the best drug for treatment:
[ "Propamidine", "Neosporine", "Ketoconazole", "Polyhexamethylene biguanide" ]
D
D i.e. Polyhexamethylene biguanide
math_qa
mathqa_03_02294
on increasing the number of lines in a page by 60 , they become 240 . what is the % of increase in the no . of lines in the page ?
[ "33.3 %", "305", "50 %", "55 %" ]
A
"explanation : number of pages increased = 60 now , the number of pages of book = 240 number of pages of the books before increase = 240 – 60 = 180 % increase in the number of pages in the book = 60 / 180 x 100 % = 33.3 % a"
sciq
sciq_01_07320
When electrons move from one atom to another, they become what?
[ "particles", "ions", "neons", "atoms" ]
B
All compounds form when atoms of different elements share or transfer electrons. In water, the atoms share electrons. In some other compounds, called ionic compounds , atoms transfer electrons. The electrons actually move from one atom to another. When atoms transfer electrons in this way, they become charged particles...
openbookqa
obqa_02_04620
If a load of deer are moved to a small park, and they are repeatedly sprayed with pesticides, the
[ "deer thrive in that environment", "deer are healthy and happy", "deer are given happy lives", "park will eventually be deerless" ]
D
harming an animal species causes that animal 's population to decrease
sciq
sciq_01_06449
Supercontinents have formed at least how many times in earth history?
[ "twenty", "nine", "five", "two" ]
C
The first continents were small but they grew over time. Supercontinents have formed at least five times in Earth history.
ARC-Easy
arc_04_01233
Which scientist studied biology by traveling by ship to different islands observing animal life, and developed a hypothesis about how species change?
[ "Galileo Galilei", "Albert Einstein", "Charles Darwin", "Sir Isaac Newton" ]
C
null
ARC-Easy
arc_04_00745
During which chemical process is energy absorbed?
[ "iron nails rusting", "candles burning", "vegetables rotting", "plants photosynthesizing" ]
D
null
medmcqa
medmcqa_05_01597
A 9 year old boy presents with growth retardation and propensity to hypoglycemia. Physical examination reveals sho stature, micropenis, increased fat and high-pitched voice. The skeletal survey reveals bone age of 5 years. Which of the following is most appropriate diagnosis -
[ "Malabsorption", "Growth hormone deficiency", "Adrenal tumour", "Thyroxin deficiency" ]
B
Ans. is 'b' i.e., Growth hormone deficiency Clinical features of Growth hormone deficiency o Sho children with normal body propoions o Markely increased subcutaneous fat o Delayed skeletal age than chronological age o The height age is less than skeletal age and chronological age. o Hypoplastic penis and scrotum o May ...
ARC-Easy
arc_04_00186
What happens during photosynthesis?
[ "Insects pollinate plants.", "Plants change soil into food energy.", "Animals get carbon dioxide from plants.", "Plants change light energy into food energy." ]
D
null
openbookqa
obqa_02_04043
What might have more closely packed matter
[ "air", "wood", "gold", "water" ]
C
matter is made of molecules
sciq
sciq_01_09750
What is the role of the sodium ion in the neutralization reaction of sodium flouride?
[ "spectator ion", "team ion", "circuit ion", "reflection ion" ]
A
Since sodium fluoride is soluble, the sodium ion is a spectator ion in the neutralization reaction. The fluoride ion is capable of reacting, to a small extent, with water, accepting a proton.
sciq
sciq_01_05182
Bone marrow is found inside many bones and produces what?
[ "lymphocytes", "sugar", "apoptosis", "tumors" ]
A
Bone marrow is found inside many bones. It produces lymphocytes.
math_qa
mathqa_03_04087
what is x if x + 2 y = 20 and y = 5 ?
[ "a", "b", "c", "d" ]
A
"x = 20 - 2 y x = 20 - 10 . x = 10 answer : a"
ARC-Challenge
arc_04_02588
In December, one side of Earth will receive less energy from the Sun than the other side. Which statement best explains this fact?
[ "Earth rotates on its axis.", "Earth is tilted on its axis.", "Sunlight traveling to Earth reflects off the Moon.", "Sunlight traveling to Earth is blocked by Moon." ]
B
null
math_qa
mathqa_03_02572
a man engaged a servant on the condition that he would pay him rs . 900 and a uniform after 1 year service . he served onlyfor 9 months and received uniform & rs . 650 , find the price of the uniform ?
[ "rs . 90", "rs . 100", "rs . 150", "rs . 190" ]
B
"9 / 12 = 3 / 4 * 900 = 675 650 - - - - - - - - - - - - - 25 1 / 4 - - - - - - - - 25 1 - - - - - - - - - ? = > rs . 100 b"
openbookqa
obqa_02_01116
herbivores do what with plants
[ "burn them", "garden them", "trade them", "snack on them" ]
D
herbivores only eat plants
sciq
sciq_01_11293
What two things are a phospholipid molecules composed of?
[ "hydrophillic head , and hydrophobic tails", "hydrophillic head , and substrate tails", "hemophillic head, and substrate tails", "hydrophillic head , and adhesion tails" ]
A
Figure 5.3 This phospholipid molecule is composed of a hydrophilic head and two hydrophobic tails. The hydrophilic head group consists of a phosphate-containing group attached to a glycerol molecule. The hydrophobic tails, each containing either a saturated or an unsaturated fatty acid, are long hydrocarbon chains.
ARC-Easy
arc_04_00227
New vaccines for diseases are being developed all the time. How do vaccines most likely help people?
[ "Vaccines help prevent illnesses.", "Vaccines keep the environment cleaner.", "Vaccines help cure people who are sick.", "Vaccines kill bacteria that cause infections." ]
A
null
math_qa
mathqa_03_02485
sandy had $ 224 left after spending 30 % of the money she took for shopping . how much money did sandy take along with her ?
[ "$ 260", "$ 290", "$ 320", "$ 350" ]
C
"let the money sandy took for shopping be x . 0.7 x = 224 x = 320 the answer is c ."
medmcqa
medmcqa_05_00761
Japanese Encephalitis is caused by
[ "Transmitted by Culex mosquitoes", "Transmitted by Anopheles mosquitoes", "Transmitted by Mansoni mosquitoes", "Transmitted by Aedes mosquitoes" ]
A
Transmitted by Culex mosquitoes
math_qa
mathqa_03_00285
find the 25 % of rs . 800 .
[ "s . 50", "s . 200", "s . 100", "s . 80" ]
B
"explanation : 25 % of 800 = > 25 / 100 * 800 = rs . 200 answer : b"
ARC-Challenge
arc_04_02160
A signal from the brain to a muscle in the arm is transmitted by which structures?
[ "sensory neurons", "interneurons", "motor neurons", "mechanoreceptor neurons" ]
C
null
math_qa
mathqa_03_00703
what is the greatest possible length which can be used to measure exactly the lengths 180 m , 500 m and 15 m 20 cm ?
[ "80 cm", "50 cm", "40 cm", "10 cm" ]
A
required length = hcf of 18000 cm , 50000 cm , 1520 cm = 80 cm answer is a
openbookqa
obqa_02_04127
seed dispersal is when the seeds of a plant are moved from the plant to a new what?
[ "planet", "bus", "page", "locale" ]
D
seed dispersal is when the seeds of a plant are moved from the plant to a new environment
sciq
sciq_01_11579
Polyester fabric's resistance to wrinkling comes from the cross-linking of what?
[ "algae strands", "polymer strands", "velocity strands", "wool strands" ]
B
PET is used in tires, photographic film, food packaging, and clothing. Polyester fabric is used in permanent-press clothing. Its resistance to wrinkling comes from the cross-linking of the polymer strands.
sciq
sciq_01_09343
Silencing genes through epigenetic mechanisms is commonly practiced on what type of uncontrolled cells?
[ "neutral cells", "innoculous cells", "giving cells", "cancer cells" ]
D
Cancer and Epigenetic Alterations Silencing genes through epigenetic mechanisms is also very common in cancer cells. There are characteristic modifications to histone proteins and DNA that are associated with silenced genes. In cancer cells, the DNA in the promoter region of silenced genes is methylated on cytosine DNA...
medmcqa
medmcqa_05_04187
Stocker's line is seen in-
[ "Pterygium", "Glaucoma", "Posteriorscleritis", "Diabetic retinopathy" ]
A
Ans. is 'a' i.e., Pterygium o Stocker's line is line of iron deposition in the corneal epithelium seen adjacent to the head of the pterygium.Pigmentorv glaucomao It is a type of secondary open angle glaucoma where in clogging up of trabecular meshwork occurs by the pigment particles.o The condition typically occurs in ...
medmcqa
medmcqa_05_02811
Most commonly associated Fungus with orbital cellulitis in patients with Diabetic Ketoacidosis is
[ "Candida", "Mucor", "Aspergillus", "Histoplasma" ]
B
(B) MucorRhino - Orbital mucormycosis:Mucormycosis is a very rare opportunistic infection caused by fungi of the family Mucoraceae, which typically affects patients with diabetic ketoacidosis or immunosuppression. This aggressive and often fatal infection.Specific infections - rhinocerebral mucormycosis:Fungal infectio...
sciq
sciq_01_07509
What are accessory digestive organs critical for breaking down?
[ "hormones", "pathogens", "food", "enzymes" ]
C
Digestive System Organs The easiest way to understand the digestive system is to divide its organs into two main categories. The first group is the organs that make up the alimentary canal. Accessory digestive organs comprise the second group and are critical for orchestrating the breakdown of food and the assimilation...
medmcqa
medmcqa_05_02349
Most common organism to cause OPSI
[ "Streptococcal pneumonia", "H. influenza", "Mycobacterium TB", "Babesia" ]
A
Ans (a) Streptococcal pneumoniaRef Sabiston page 1568/20th edition* 50-90% cases of OPSI is due to streptococcal pneumonia.* PPV23 vaccine is given nowadays 2 weeks prior to elective surgery
openbookqa
obqa_02_03211
High areas can be visually represented by:
[ "deep sea", "mountains", "valleys", "basins" ]
B
the Himalayas were formed by rock folding
medmcqa
medmcqa_05_02237
Iv glucose tolerance is done in -
[ "Children", "Pregnancy", "Gastrectomy", "Old age" ]
C
The IV Glucose Tolerance Blood Test helps determine glucose levels in blood, after intravenous administration of a 50% solution of glucose. It is used to diagnose diabetes, cancers, and metabolic disordersThis test is more sensitive than the oral glucose tolerance blood test because the glucose sample does not have to ...
sciq
sciq_01_05167
What are materials that have a low resistance to electrical current called?
[ "fast conductors", "resistors", "electrical conductors", "electrons" ]
C
Materials that have low resistance to electric current are called electric conductors. Many metals are good electric conductors.
math_qa
mathqa_03_01020
a bag contains 7 green balls and 7 white balls . if two balls are drawn simultaneously , what is the probability that both balls are the same colour ?
[ "4 / 13", "6 / 13", "8 / 21", "11 / 21" ]
B
"the total number of ways to draw two balls is 14 c 2 = 91 the number of ways to draw two green balls is 7 c 2 = 21 the number of ways to draw two white balls is 7 c 2 = 21 p ( two balls of the same colour ) = 42 / 91 = 6 / 13 the answer is b ."
sciq
sciq_01_07080
Which law refers to the electron charge remaining the same during transfer?
[ "law of conservation of charge", "law of change", "law of construct of charge", "law of conservation of speculation" ]
A
Three ways electrons can be transferred are conduction, friction, and polarization. In each case, the total charge remains the same. This is the law of conservation of charge.
sciq
sciq_01_03915
Earthquake waves that travel trhough underground rocks in all directions are known as?
[ "primary waves", "tertiary waves", "secondary waves", "typical waves" ]
C
Another example of transverse waves occurs with earthquakes. The disturbance that causes an earthquake sends transverse waves through underground rocks in all directions from the disturbance. Earthquake waves that travel this way are called secondary, or S, waves. An S wave is illustrated in Figure below .
sciq
sciq_01_01308
Newly formed what aggregates into threads that form the framework of the clot?
[ "blood", "collagen", "fibrin", "plasma" ]
C
medmcqa
medmcqa_05_01515
A 15 year old child presents in the OPD with acute abdominal pain. He also gives history of blood and mucous in the stool. On P/A examination a mass is palpable. The MOST probable diagnosis in this patient is?
[ "Meckel's diveiculum", "Volvulus", "Intussusception", "Hyperophic pyloric stenosis" ]
C
A syndrome of colicky pain, passage of blood per rectum and a palpable mass (intussuscepted segment) is characteristic of intussusception. Ref: CSDT 13/e, Page 629; Bailey & Love 25/e, Page 1191.
openbookqa
obqa_02_02969
Hunting any kind of animal will eventually cause that species population numbers to
[ "go down", "phone number", "atomic number", "egg shell number" ]
A
harming an animal species causes that animal 's population to decrease
openbookqa
obqa_02_00429
A human who goes long periods of time without nourishment will experience
[ "Starvation", "Perspiration", "Fullness", "happiness" ]
A
lack of food causes starvation
sciq
sciq_01_00381
When a predator kills and eats its prey, what sort of predation is this referred to as?
[ "just", "true", "predestined", "false" ]
B
True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey dies in the mouth or the digestive system of the predat...
sciq
sciq_01_05151
What is the smallest unit of a living thing?
[ "cell", "electron", "organ", "proton" ]
A
A cell is the smallest unit of a living thing. A living thing, like you, is called an organism. Thus, cells are the basic building blocks of all organisms. In multicellular organisms, several cells of one particular kind interconnect with each other and perform shared functions to form tissues (for example, muscle tiss...
math_qa
mathqa_03_02487
what is the sum of all digits for the number 10 ^ 27 - 48 ?
[ "212", "222", "232", "242" ]
C
"10 ^ 27 is a 28 - digit number : 1 followed by 27 zeros . 10 ^ 27 - 48 is a 27 - digit number : 25 9 ' s and 52 at the end . the sum of the digits is 25 * 9 + 5 + 2 = 232 . the answer is c ."
sciq
sciq_01_06367
In which stage do chromosomes line up one on top of each other along the middle of the cell, similar to how they line up in mitosis?
[ "cyclohexane ii", "chromosome ii", "metaphase ii", "hectase ii" ]
C
Metaphase II: The chromosomes line up one on top of each other along the middle of the cell, similar to how they line up in mitosis. The spindle is attached to the centromere of each chromosome.
sciq
sciq_01_08943
In animal cells, what arises from the centrosomes and includes spindle microtubules and asters?
[ "the spindle", "Golgi apparatus", "DNA helix", "ribosomes" ]
A
math_qa
mathqa_03_00157
5 friends visited a fruit stall , and everyone decided to contribute equally to the total bill of $ 100 . if one of the friends had a coupon for 6 % off the total bill , and if each friend still contributed equally after the coupon was applied to the bill , how much did each friend pay ?
[ "18", "18.8", "19", "17.8" ]
B
at the non - discounted price , each friend would pay $ 20 , as $ 100 divided by 5 friends is $ 20 per friend . but if the bill is 6 % off , then each friend would pay 6 % less . 6 % of $ 20 is $ 1.2 , so each friend saves $ 1.2 and pays the remaining 18.8 correct option : option b
sciq
sciq_01_11136
The kinetic energy of molecules is generally proportionate to what other property that they have?
[ "precipitation", "mass", "temperature", "variation" ]
C
The average kinetic energy of the molecules is proportional to the temperature of the sample.
sciq
sciq_01_05913
Fish are a diverse and interesting group of organisms in what sub-phylum?
[ "vertebrates", "mammals", "organelles", "invertebrates" ]
A
If the word fish makes you think of cute little goldfish in a tank, check out the anglerfish pictured in Figure below . It’s also called a black sea devil. Surprisingly, goldfish and angler fish aren’t all that different from each other as far as fish diversity goes. Both fish are placed in the same fish class. Clearly...
sciq
sciq_01_02184
Sphenodontia sphenodontia (“wedge tooth”) arose in the mesozoic era and includes only one of what?
[ "outside genus", "inner genus", "traveling genus", "living genus" ]
D
Sphenodontia Sphenodontia (“wedge tooth”) arose in the Mesozoic era and includes only one living genus, Tuatara, comprising two species that are found in New Zealand (Figure 29.26). Tuataras measure up to 80 centimeters and weigh about 1 kilogram. Although quite lizard-like in gross appearance, several unique features ...
sciq
sciq_01_08023
What do you call the process that results in an animal producing offspring?
[ "creationism", "adoption", "differentiation", "reproduction" ]
D
math_qa
mathqa_03_02073
what is the smallest integer y for which 27 ^ y > 3 ^ 24 ?
[ "7", "8", "9", "10" ]
C
"27 ^ y > 3 ^ 24 converting into the same bases : 27 ^ y > 27 ^ 8 therefore for the equation to hold true , y > 8 or y = 9 option c"
math_qa
mathqa_03_03282
the current of a stream runs at the rate of 4 kmph . a boat goes 10 km and back to the starting point in 2 hours , then find the speed of the boat in still water ?
[ "a", "b", "c", "d" ]
D
"s = 4 m = x ds = x + 4 us = x - 4 10 / ( x + 4 ) + 10 / ( x - 4 ) = 2 x = 11.4 answer : d"
sciq
sciq_01_07247
What term is defined as the preserved remains or traces of organisms that lived during earlier ages?
[ "deposits", "bones", "fossils", "waste" ]
C
Fossils are the preserved remains or traces of organisms that lived long ago. They form mainly when minerals in water turn remains to stone. Fossils can be dated using methods such as carbon-14 dating or their positions in rock layers.
sciq
sciq_01_07165
A structure composed of two or more types of tissues that work together to perform the same function is called?
[ "order", "organ", "System", "Group" ]
B
The four types of tissues make up all the organs of the human body. An organ is a structure composed of two or more types of tissues that work together to perform the same function. Examples of human organs include the skin, brain, lungs, kidneys, and heart. Consider the heart as an example. Figure below shows how all ...
sciq
sciq_01_10483
Which layer is found below the lithosphere?
[ "asthenosphere", "stratosphere", "magnetosphere", "troposphere" ]
A
The asthenosphere is below the lithosphere. The asthenosphere is also in the upper mantle. This layer is solid, but it can flow and bend. A solid that can flow is like silly putty.
math_qa
mathqa_03_00110
what is the remainder when 46 * 49 is divided by 8 ?
[ "1", "3", "4", "6" ]
D
"we can make use of the rule : remainder of { ( a * b ) / n } } = remainder of ( a / n ) * remainder of ( b / n ) here remainder of { 46 * 49 ) / 8 } } = remainder of ( 46 / 8 ) * remainder of ( 49 / 8 ) = 6 * 1 = 6 answer : d"
sciq
sciq_01_08712
The colorless, odorless gas released when we breath is carbon dioxide. the harmful colorless, odorless gas released when matter is burned is what?
[ "acid monoxide", "methane", "carbon trioxide", "carbon monoxide" ]
D
Carbon Dioxide: Every time you exhale, you release carbon dioxide into the air. It's an odorless, colorless gas. Carbon dioxide contributes to global climate change, but it isn't directly harmful to human health. Carbon Monoxide: Carbon monoxide is produced when matter burns. It's a colorless, odorless gas that is very...
sciq
sciq_01_00001
What phenomenon makes global winds blow northeast to southwest or the reverse in the northern hemisphere and northwest to southeast or the reverse in the southern hemisphere?
[ "muon effect", "coriolis effect", "tropical effect", "centrifugal effect" ]
B
Without Coriolis Effect the global winds would blow north to south or south to north. But Coriolis makes them blow northeast to southwest or the reverse in the Northern Hemisphere. The winds blow northwest to southeast or the reverse in the southern hemisphere.
math_qa
mathqa_03_02139
the sale price sarees listed for rs . 540 after successive discount is 5 % and 2 % is ?
[ "288", "500", "502", "540" ]
C
"540 * ( 95 / 100 ) * ( 98 / 100 ) = 502 answer : c"
sciq
sciq_01_04251
What are the building blocks of dna?
[ "genes", "peptides", "prokaryotes", "nucleotides" ]
D
The building blocks of DNA are nucleotides. The important components of the nucleotide are a nitrogenous base, deoxyribose (5-carbon sugar), and a phosphate group (Figure 14.5). The nucleotide is named depending on the nitrogenous base. The nitrogenous base can be a purine such as adenine (A) and guanine (G), or a pyri...
ARC-Challenge
arc_04_02521
Drew knows that Earth is tilted on its axis. He also knows this tilt is responsible for the season that a region on Earth will experience. When the South Pole is tilted toward the Sun, what season will it be in Florida?
[ "fall", "spring", "summer", "winter" ]
D
null
sciq
sciq_01_05969
What makes viral stis more dangerous than other types?
[ "they are incurable", "they are more contagious", "they are more severe", "they are larger" ]
A
This is the Human Papilloma Virus, which causes a viral STI. Viral STIs can be especially dangerous, as they cannot be cured. Once you get one, it's yours for life. And also, it's the person's you give it to.
sciq
sciq_01_04610
What are the two types of charges?
[ "volume and acceleration", "energy and mass", "ions and neutrons", "positive and negative" ]
D
Conservation of charge is the fourth of the five conservation laws in physics. There are two charges, positive and negative, and the conservation of electric charge indicates that the total charge in the universe remains the same. In any closed system charge can be transferred from one body to another or can move withi...
medmcqa
medmcqa_05_00178
Passavant ridge is formed by
[ "Superior constrictor and palatopharyngeus", "Inferior constrictor and palatopharyngeus", "Superior constrictor and palatoglossus", "Inferior constrictor and palatoglossus" ]
A
Passavant ridge Near the superior margin of the pharynx, a few fibers of superior constrictor blend with a band of muscle fibers belonging to the palatopharyngeus muscle These fused fibers form a band or ring around the posterior wall and sidewalls of the nasopharyngeal isthmus When the soft palate is elevated this mus...
openbookqa
obqa_02_00843
The floating arrow on a compass always points away from the
[ "east", "north", "south", "west" ]
C
the floating arrow on a compass always points towards the north
medmcqa
medmcqa_05_02936
Memory T cells can be identified by using the following marker:
[ "CD45RA", "CD45RB", "CD45RC", "CD45RO" ]
D
CD 45 is called as Leukocyte common antigen (LCA) Location of cell Molecular marker All leucocytes CD45 and CD45RB Medullary thymocytes ('Naive' T- cells) CD45 RA and CD45RC Coical thymocytes (Memory T-cells) CD45RO
medmcqa
medmcqa_05_02449
Which of the following pigments are involved in free radical injury?
[ "Lipofuscin", "Melanin", "Bilirubin", "Hematin" ]
A
In aging or debilitating diseases the phospholipid end-products of membrane damage mediated by oxygen free radicals to get eliminated by intracellular lipid peroxidation. These, therefore, persist as collections of indigestible material in the lysosomes; thus lipofuscin is an example of residual bodies. Ref: Textbook o...
openbookqa
obqa_02_03441
What does the earth orbit that makes the seasons to change?
[ "pluto", "plasma star", "venus", "mercury" ]
B
a line graph is used for showing change over time
sciq
sciq_01_05911
These resources can be remade quickly, through natural processes
[ "non-renewable", "electric", "fossil fuel", "renewable" ]
D
From a human point of view, natural resources can be classified as either renewable or nonrenewable. Renewable resources, such as sunlight and living things, can be remade quickly by natural processes. Nonrenewable resources, such as fossil fuels and soil, cannot be remade or else take millions of years to remake.
ARC-Challenge
arc_04_02853
During which activity will light most likely be refracted?
[ "placing a scarf over the shade of a lamp", "viewing objects using the side mirror of a car", "looking at pebbles through the water in a stream", "using a flashlight to light up a forest path at night" ]
C
null
ARC-Challenge
arc_04_02182
The gravitational force exerted by an object depends on its
[ "volume.", "weight.", "mass.", "size." ]
C
null
medmcqa
medmcqa_05_04915
Which of the following is not seen in HIV involvement of CNS -
[ "Perivascular giant cell", "Vacuolar degeneration of posterior column", "Microglial nodule formation", "Inclusion bodies" ]
D
CNS involvement in AIDS Involvement of C.N.S. is a common and important manifestation of AIDS. In addition to the lymphoid system, the nervous system is a major target of HIV infection. Macrophages and microglial cells in the central nervous system that belongs to the monocyte and macrophages lineages are the predomin...
math_qa
mathqa_03_00524
5 , 7 , 11 , 18 , 33 , ( . . . )
[ "22", "35", "27", "63" ]
D
"explanation : 5 5 × 2 - 3 = 7 7 × 2 - 3 = 11 11 × 2 - 3 = 18 18 × 2 - 3 = 33 33 × 2 - 3 = 63 answer : option d"
sciq
sciq_01_01053
Amphibians have permeable skin which allows for the exchange of oxygen and carbon dioxide, what is this "breathing called?"
[ "aquatic respiration", "cutaneous respiration", "variant respiration", "benign respiration" ]
B
Characteristics of Amphibians As tetrapods, most amphibians are characterized by four well-developed limbs. Some species of salamanders and all caecilians are functionally limbless; their limbs are vestigial. An important characteristic of extant amphibians is a moist, permeable skin that is achieved via mucus glands t...
math_qa
mathqa_03_03228
in order to obtain an income of rs . 580 from 15 % stock at rs . 100 , one must make an investment of
[ "5363", "6240", "8700", "5600" ]
C
"to obtain rs . 10 , investment = rs . 100 . to obtain rs . 580 , investment = = rs . 8700 . answer : c"
sciq
sciq_01_08014
What's caused by damaged capillaries in the kidneys so the nephrons can no longer filter blood?
[ "colon failure", "kidney failure", "bacteria failure", "sponge failure" ]
B
Untreated diabetes may damage capillaries in the kidneys so the nephrons can no longer filter blood. This is called kidney failure. The only cure for kidney failure is to receive a healthy transplanted kidney from a donor. Until that happens, a patient with kidney failure can be kept alive by artificially filtering the...
ARC-Easy
arc_04_00808
Students measure the time for toy cars of different masses to roll down a hill. Which of the following units should the students use to measure time?
[ "centimeters", "grams", "milliliters", "seconds" ]
D
null
sciq
sciq_01_04325
Alkanes are nonpolar and therefore do not attract what?
[ "atoms", "eons", "molecules", "ions" ]
D
Alkanes are nonpolar; they do not attract ions.
ARC-Easy
arc_04_00349
A forest is flooded when a natural dam breaks, leaving the forest floor under two meters of water. Which animal is most affected by the flooding?
[ "a crow", "a rabbit", "a squirrel", "a butterfly" ]
B
null
sciq
sciq_01_07821
What does the color of soil indicate?
[ "density", "temperature", "chemical makeup", "fertility" ]
D
The color of soil indicates its fertility. Black or dark brown soils are rich in nitrogen and contain a high percentage of organic materials. Soils that are nitrogen poor and low in organic material might be gray, yellow, or red ( Figure below ). Soil with low organic material is not good for growing plants.
openbookqa
obqa_02_04094
A producer is relocated from a small pot into a wild forest. The producer is able to do this with relative ease:
[ "acclimate", "rhyme", "befriend", "float" ]
A
changes in an environment cause plants to adapt to survive
sciq
sciq_01_01975
Fruit begins to ripen because what gas is released?
[ "hydrogen", "ethylene", "sulfur", "chloride" ]
B
sciq
sciq_01_03043
What type of compound is hydrogen chloride?
[ "polar", "covalent", "metal", "ionic" ]
B
The largest, most complex covalent molecules have thousands of atoms. Examples include proteins and carbohydrates, which are compounds in living things. The smallest, simplest covalent compounds have molecules with just two atoms. An example is hydrogen chloride (HCl). It consists of one hydrogen atom and one chlorine ...
sciq
sciq_01_08665
What are broken down during digestion to provide the amino acids needed for protein synthesis?
[ "metabolytes", "sugars", "dietary proteins", "carbohydrates" ]
C
Dietary proteins are broken down during digestion to provide the amino acids needed for protein synthesis. Any extra proteins in the diet not needed for this purpose are used for energy or stored as fat. One gram of proteins provides 4 Calories of energy. Eating protein provides the amino acids for your cells to produc...
math_qa
mathqa_03_02780
express a speed of 56 kmph in meters per second ?
[ "10.56 mps", "17.56 mps", "97.56 mps", "15.56 mps" ]
D
"56 * 5 / 18 = 15.56 mps answer : d"
math_qa
mathqa_03_00769
the average mark of the students of a class in a particular exam is 80 . if 5 students whose average mark in that exam is 20 are excluded , the average mark of the remaining will be 92 . find the number of students who wrote the exam .
[ "15", "25", "30", "45" ]
C
"let the number of students who wrote the exam be x . total marks of students = 80 x . total marks of ( x - 5 ) students = 92 ( x - 5 ) 80 x - ( 5 * 20 ) = 92 ( x - 5 ) 360 = 12 x = > x = 30 answer : c"
medmcqa
medmcqa_05_02442
The structure which doesn't pass through the parotid gland?
[ "Facial nerve", "ICA", "Branch of ECA", "Retromandibular vein" ]
B
ICA doesn't pass through the parotid gland. Structures passing through the parotid gland are: Facial N. Retromandibular vein Ext. carotid aery Sympathetic plexus (a/w ECA)
ARC-Easy
arc_04_01799
There is a river at the base of Mount Tom. In the spring the water level is usually very high. In the summer it is lower. The higher level of water during the spring comes from
[ "hurricanes.", "melting snow.", "tornadoes.", "evaporating water." ]
B
null
openbookqa
obqa_02_03864
If a dog is hunting, then
[ "it can sense whales nearby", "it can sense toys around", "it is getting tired", "it can sense something using the olfactory" ]
D
smell is used for finding food by some animals
openbookqa
obqa_02_03049
we only have diamonds because of the existence of
[ "raw bacon", "machines", "pressure", "work" ]
C
extreme heat and pressure compact sediment into sedimentary rock
math_qa
mathqa_03_04709
a cistern can be filled by a tap in 3 hours while it can be emptied by another tap in 9 hours . if both the taps are opened simultaneously , then after how much time will the cistern get filled ?
[ "4.5 hrs", "5 hrs", "6.5 hrs", "7.2 hrs" ]
A
"net part filled in 1 hour = 1 / 3 - 1 / 9 = 2 / 9 therefore the cistern will be filled in 9 / 2 hours or 4.5 hours . answer : a"
math_qa
mathqa_03_04784
a room of 5 m 44 cm long and 3 m 74 cm broad is to be paved with squre tiles . find the least number of squre tiles required to cover the floor .
[ "233", "877", "279", "176" ]
D
"explanation : area of the room = 544 * 374 sq cm size of largest square tile = h . c . f of 544 cm and 374 cm = 34 cm area of 1 tile = 34 * 34 sq cm no . of tiles required = ( 544 * 374 ) / ( 34 * 34 ) = 176 answer : d ) 176"
ARC-Easy
arc_04_00324
Katia was listening to music on the radio. In order for the sound to be produced, the electrical energy must be converted into which type of energy?
[ "thermal energy", "magnetic energy", "chemical energy", "mechanical energy" ]
D
null
sciq
sciq_01_10426
When zinc metal is mixed with sulfur and heated, what is produced?
[ "methane sulfide", "extraction sulfide", "iron", "zinc sulfide" ]
D
In the course of a chemical reaction between a metal and a nonmetal, electrons are transferred from the metal atoms to the nonmetal atoms. For example, when zinc metal is mixed with sulfur and heated, the compound zinc sulfide is produced. Two valence electrons from each zinc atom are transferred to each sulfur atom.
sciq
sciq_01_02193
The actual amount (mass) of gasoline left in the tank when the gauge hits “empty” is a lot less in the summer than in the winter. the gasoline has the same volume as it does in the winter when the “add fuel” light goes on, but because the gasoline has expanded, there is what?
[ "more mass", "lower gravity", "less mass", "same mass" ]
C
Making Connections: Real-World Connections—Filling the Tank Differences in the thermal expansion of materials can lead to interesting effects at the gas station. One example is the dripping of gasoline from a freshly filled tank on a hot day. Gasoline starts out at the temperature of the ground under the gas station, w...
sciq
sciq_01_11009
Hormones produced by what gland in the neck increase the rate of metabolism in cells throughout the body?
[ "thymus", "pituitary", "kidney", "thyroid" ]
D
The thyroid gland is a large gland in the neck. Thyroid hormones increase the rate of metabolism in cells throughout the body. They control how quickly cells use energy and make proteins.
medmcqa
medmcqa_05_01147
Cytokine with predominant anti-inflammatory action is ?
[ "Interleukin 6", "GM-CSF", "TGF-b", "TNF-Alpha" ]
C
Ans. is 'c' i.e., TGF-b Proinflammatorv cytokines i) Major:- IL-1, TNF- alpha, IL-6 ii) Other:- IL-2, IL-4, IL-5, IL-6, IL-8, IL-11, IL-12, IL-15, IL-21, IL-23, IFN- gamma, GM-CSF Anti-inflammatory cytokines i) IL-4, IL-10, IL-13, and transforming growth factor b (TGF-b)