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medmcqa
medmcqa_05_03540
Conversion of phenylalanine to tyrosine is hampered in -
[ "Phenylketonuria", "Alkaptonuria", "Maple syrup disease", "Tyrosinemia" ]
A
Ans. is 'a' i.e., Phenylketonuria o Phenylketonuria is characterized by inability of oxidation of phenylalanine into tyrosine.Phenylketonuriao It is an inborn metabolism of phenylalanine, in which there is inability of oxidation of phenylalanine into tyrosine. There is defective function ofphenylalanine hydroxylase, wh...
ARC-Challenge
arc_04_02602
Which of these is an element?
[ "KBr", "O_{2}", "2KCl", "FeO_{2}" ]
B
null
math_qa
mathqa_03_03344
1 / 4 of all the juniors and 2 / 3 of all the seniors are going on a trip . if there are 2 / 3 as many juniors as seniors , what fraction of the students are not going on the trip ?
[ "4 / 9", "1 / 2", "2 / 3", "1 / 3" ]
B
j be the number of juniors and s be the number of seniors . there are 2 / 3 as many juniors as seniors 23 ∗ s = j j / s = 23 going on trip = j 4 + 23 ∗ s fraction = ( j 4 + 23 s ) / ( j + s ) = ( 2 / 3 * 1 / 4 + 2 / 3 ) / ( 2 / 3 + 1 ) = 1 / 2 fraction not on trip = 1 / 2 answer : b
sciq
sciq_01_11113
In multicellular organisms, only mutations in cell lines that produce gametes can be passed to what?
[ "cells", "clones", "proteins", "offspring" ]
D
math_qa
mathqa_03_00223
the volume of a certain substance is always directly proportional to its weight . if 48 cubic inches of the substance weigh 112 ounces , what is the volume , in cubic inches , of 60 ounces of this substance ?
[ "27", "36", "25", "64" ]
C
"112 ounces of a substance has a volume of 48 cubic inches 60 ounces of a substance has a volume of ( 48 / 112 ) * 60 = 25 cubic inches answer a alternatively , we can use estimation 112 ounces of a substance has a volume of 48 cubic inches 56 ounces of a substance has a volume of 24 cubic inches therefore , 60 will ha...
medmcqa
medmcqa_05_02873
Brush burn is due to
[ "Friction injury", "Firearm injury", "Electrical injury", "Graze abrasion" ]
D
D i.e. Graze abrasion
openbookqa
obqa_02_01660
Bananas spread their chromosomes because of
[ "bats", "apples and oranges", "snakes", "Jamaican singers" ]
A
seed dispersal has a positive impact on a plant
sciq
sciq_01_08068
In dioecious animals, females generally produce what contribution to reproduction?
[ "eggs", "intelligence", "warmth", "milk" ]
A
During sexual reproduction, two parents are involved. Most animals are dioecious , meaning there is a separate male and female sex, with the male producing sperm and the female producing eggs. When a sperm and egg meet during fertilization , a zygote , the first cell of a new organism, is formed ( Figure below ). This ...
openbookqa
obqa_02_00472
The spinal cord contains
[ "electrically excitable cells", "nerve gas", "biological impulses", "hair follicles" ]
A
nerves are made of nerve cells
medmcqa
medmcqa_05_03623
The regional aerial resistance of the mesentery and kidney is reduced by-
[ "Dopamine", "Nor adrenaline", "Adrenaline", "Isoprenaline" ]
A
The D1 receptor in renal and mesenteric blood vessels are the most sensitive. I/V infusion of low dose of dopamine dilates these vessels (by raising intracellular cAMP). This increases GFR in addition dopamine exes natriuretic effect by D1 receptors on proximal tubules.
sciq
sciq_01_09997
What type of alloys are used in musical instruments?
[ "brass", "copper", "bronze", "plastics" ]
A
Brass alloys have long been employed in musical instruments.
openbookqa
obqa_02_03807
Seals have an instinct to give birth in the same area every year. Where do seals give birth normally?
[ "Jupiter", "space", "waterfronts", "houses" ]
C
seals every year return to the same beaches to give birth
sciq
sciq_01_09672
What makes metals shiny?
[ "light energy", "light characterization", "light reflection", "light expansion" ]
C
Metals are generally shiny. This is because they reflect much of the light that strikes them. The mercury pictured above is very shiny.
ARC-Easy
arc_04_01322
Which tool should be used to compare the growth of an algal colony growing in a petri dish?
[ "a scale", "a ruler", "a hand lens", "a balance scale" ]
C
null
sciq
sciq_01_04546
Within each sporangium, hundreds of what kind of spores develop and are dispersed through the air?
[ "infertile", "diploid", "haploid", "polyploid" ]
C
ARC-Challenge
arc_04_02430
When a compression wave travels through a medium, in what direction is the medium displaced?
[ "upward", "downward", "in the same direction", "in the opposite direction" ]
C
null
sciq
sciq_01_02889
What is the climate of a small area called?
[ "ecosystem", "microclimate", "microevolution", "biome" ]
B
Climate conditions in a small area may be different from those of the surroundings. The climate of the small area is called a microclimate . The microclimate of a valley may be cool relative to its surroundings since cold air sinks. The ground surface may be hotter or colder than the air a few feet above it. This is be...
sciq
sciq_01_07789
A tropism where light is the stimulus is known as what?
[ "phototropism", "Thermotropism", "Atropism", "Geotropism" ]
A
You might have noticed that plants bend toward the light. This is an example of a tropism where light is the stimulus, known as phototropism ( Figure below ). To obtain more light for photosynthesis, leaves and stems grow toward the light. On the other hand, roots grow away from light. This is beneficial for the roots,...
sciq
sciq_01_03872
What type of plants supplement their mineral nutrition by digesting animals?
[ "perennials", "annuals", "herbivorous", "carnivorous" ]
D
sciq
sciq_01_11564
What chemical element helps forms strong bones and teeth in humans?
[ "calcium", "potassium", "magnesium", "iron" ]
A
Minerals are chemical elements that are essential for body processes. They include calcium, which helps form strong bones and teeth, and potassium, which is needed for normal nerve and muscle function. Good sources of minerals include leafy, green vegetables, whole grains, milk, and meats.
sciq
sciq_01_00251
Cycling, shoveling snow and cross-country skiing are examples of what kind of heart-strengthening activity?
[ "anaerobic", "aerobic", "exercise", "metabolism" ]
B
When done regularly, aerobic activities, such as cycling, make the heart stronger. Other aerobic activities include mowing lawn, shoveling snow and cross country skiing.
ARC-Easy
arc_04_01732
Which part of an atom is involved in chemical reactions?
[ "nucleus and its particles", "negatively-charged particles", "neutrally-charged particles", "positively-charged particles" ]
B
null
openbookqa
obqa_02_03135
A filament that is in a glass container will be this when a switch is flipped to cause glass to glow:
[ "dark", "toasty", "cold", "icy" ]
B
an incandescent light bulb converts electricity into heat by sending electricity through a filament
medmcqa
medmcqa_05_00773
Sensory of angle of jaw is through:
[ "Great auricular nerve", "Posterior auricular nerve", "Auriculotemporal nerve", "Lesser petrosal nerve" ]
A
Ans. A. Great auricular nerveThe ophthalmic nerve (V1 ) carries sensory information from the scalp and forehead, the upper eyelid, the conjunctiva and cornea of the eye, the nose (including the tip of the nose, except alae nasi), the nasal mucosa, the frontal sinuses and parts of the meninges (the dura and blood vessel...
sciq
sciq_01_04759
What forms when tectonic plates move above a hot spot?
[ "volcanic system", "volcanic setting", "earthquake chain", "volcanic chain" ]
D
As the tectonic plates move above a hot spot, they form a chain of volcanoes. The islands of Hawaii formed over a hot spot in the middle of the Pacific plate. The Hawaii hot spot has been active for tens of millions of years. The volcanoes of the Hawaiian Islands formed at this hot spot. Older volcanoes that formed at ...
medmcqa
medmcqa_05_02871
Which of the following is the shoest acting non-depolarizing muscle relaxant (NDMR) and causes bronchospasm?
[ "Succinyl choline", "Rapacuronium", "Atracurium", "Pancuronium" ]
B
Rapacuronium has a rapid onset of action, minimal cardiovascular side effects, and a sho duration of action. It was withdrawn by the manufacturer following several repos of serious bronchospasm, including a few unexplained fatalities. Histamine release may have been a factor. Ref: Morgan, Jr. G.E., Mikhail M.S., Murray...
ARC-Easy
arc_04_01410
When a thin slice from an onion is viewed through a microscope, lots of little box-like shapes are seen. These shapes are most likely
[ "atoms.", "dust.", "cells.", "bubbles." ]
C
null
openbookqa
obqa_02_03529
A cylinder with lenses can even make Uranus appear to be
[ "farther", "closer", "scaled down", "smaller" ]
B
if an object is close then that object will appear large
sciq
sciq_01_01816
The iron ion used to bind oxygen is on what type of "ring"?
[ "reagent ring", "porphyrin ring", "petrarchan ring", "DNA ring" ]
B
The yellow subunits are identical in structure, as are the gray subunits. A smaller organic structure called a porphyrin ring is attached to each protein subunit and contains the iron ion used to bind oxygen.
sciq
sciq_01_10299
What is a mixture of potassium nitrate, sulfur, and charcoal?
[ "gasoline", "gunpowder", "TNT", "cyanide" ]
B
Nitrates, salts of nitric acid, form when metals, oxides, hydroxides, or carbonates react with nitric acid. Most nitrates are soluble in water; indeed, one of the significant uses of nitric acid is to prepare soluble metal nitrates. Nitric acid finds extensive use in the laboratory and in chemical industries as a stron...
sciq
sciq_01_02339
The structure of mitochondrion plays an important role in what?
[ "magnetism", "cell division", "sexual reproduction", "aerobic respiration" ]
D
The structure of a mitochondrion is defined by an inner and outer membrane. This structure plays an important role in aerobic respiration.
sciq
sciq_01_10995
What two structures are found on mars?
[ "Mountains and Creeks", "Trees and Canyons", "geysers and canyons", "volcanoes and canyons" ]
D
The surface of Mars has volcanoes and canyons. There is a polar ice cap and channels that were once filled with water. Curiosity has found evidence of a flowing stream.
openbookqa
obqa_02_03173
A thermal insulator slows the transfer of what?
[ "warmness", "light", "energy", "liquid" ]
A
a thermal insulator slows the transfer of heat
ARC-Easy
arc_04_01919
A student tosses a ball into the air. Which force causes the ball to fall back to the ground?
[ "gravity", "magnetism", "mechanical", "friction" ]
A
null
sciq
sciq_01_04892
How do humans learn behaviors?
[ "Aural pressure", "Verbal pressure", "conditioning", "pressure" ]
C
Humans learn behaviors through conditioning, as well. A young child might learn to put away his toys by being rewarded with a bedtime story. An older child might learn to study for tests in school by being rewarded with better grades. Can you think of behaviors you have learned by being rewarded for them?.
sciq
sciq_01_03820
What is the connecting piece of a sperm packed with?
[ "glucose", "protein", "Gelatin", "mitochondria" ]
D
The connecting piece of the sperm is packed with mitochondria. Mitochondria are organelles in cells that produce energy. Sperm use the energy to move.
math_qa
mathqa_03_00240
a 5 digit number divisible by 3 is to be formed using the digits 0 , 1 , 2 , 3 , 4 and 5 without repetitions . that total no of ways it can be done is ?
[ "122", "210", "216", "217" ]
C
first step : we should determine which 5 digits from given 6 , would form the 5 digit number divisible by 3 . we have six digits : 0,1 , 2,3 , 4,5 . their sum = 15 . for a number to be divisible by 3 the sum of the digits must be divisible by 3 . as the sum of the six given numbers is 15 ( divisible by 3 ) only 5 digit...
math_qa
mathqa_03_00431
tickets numbered from 1 to 20 are mixed and then a ticket is selected randomly . what is the probability that the selected ticket bearsa number which is a multiple of 3 ?
[ "1 / 5", "2 / 5", "3 / 10", "3 / 7" ]
C
"here , s = [ 1 , 2 , 3 , 4 , … . , 19 , 20 ] let e = event of getting a multiple of 3 = [ 3 , 6 , 9 , 12 , 15 , 18 ] p ( e ) = n ( e ) / n ( s ) = 6 / 20 = 3 / 10 c"
medmcqa
medmcqa_05_00173
In menopause, which of the following is seen: March 2013
[ "High progesterone", "High estrogen", "High FSH", "Low FSH" ]
C
Ans. C i.e. High FSH
sciq
sciq_01_05934
What are the simplest hydrocarbons?
[ "unsaturated hydrocarbons", "complex carbohydrates", "fossil fuels", "saturated hydrocarbons" ]
D
Saturated hydrocarbons contain only single bonds between carbon atoms. They are the simplest hydrocarbons. They are called saturated because each carbon atom is bonded to as many hydrogen atoms as possible. In other words, the carbon atoms are saturated with hydrogen. You can see an example of a saturated hydrocarbon i...
ARC-Challenge
arc_04_02855
Which action is most likely a learned behavior?
[ "A bird builds a nest.", "A spider spins a web.", "A lion cub practices its hunting skills.", "An earthworm moves away from bright light." ]
C
null
medmcqa
medmcqa_05_02381
Medusa lock appearance in X-ray is seen in:
[ "Ascariasis", "Tapeworm", "Hook worm", "Ascaries and tapeworm" ]
A
Ans. Ascariasis
openbookqa
obqa_02_04111
we only have diamonds because of the existence of
[ "machines", "large pressure", "work force", "carbonite" ]
B
heat and pressure change the remains of prehistoric living things into natural gas
sciq
sciq_01_01850
Reversing the orientation of a chromosomal segment is called what?
[ "spontaneous mutation", "volatiles", "occurrences", "inversions" ]
D
Inversions are reversing the orientation of a chromosomal segment.
openbookqa
obqa_02_02886
Which is considered least important in the solar system?
[ "Earth", "Pluto", "Mars", "the Sun" ]
B
pluto has not cleared its orbit
openbookqa
obqa_02_00493
If something is a raw material in a process, then that something is
[ "degraded during the process", "man made before the process", "a required during production like labor and capital", "only used in the final phase" ]
C
if something is a raw material in a process then that something is required for that process
math_qa
mathqa_03_01460
population is 21000 . population increases by 10 % every year , then the population after 3 years is ?
[ "26630", "27951", "36621", "26621" ]
B
"population after 1 st year = 21000 * 10 / 100 = 2100 = = = > 21000 + 2100 = 23100 population after 2 nd year = 23100 * 10 / 100 = 2310 = = = > 23100 + 2310 = 25410 population after 3 rd year = 254100 * 10 / 100 = 2541 = = = > 25410 + 2541 = 27951 answer : b"
openbookqa
obqa_02_02230
Wind blowing southwest at high speeds can, when interacting with a car moving southwest at high speeds,
[ "break the car's speed", "stall the car's speed", "slow the car's speed", "heighten the car's speed" ]
D
a force continually acting on an object in the same direction that the object is moving can cause that object 's speed to increase in a forward motion
sciq
sciq_01_05265
Silver, gold, and copper all conduct what very well?
[ "light", "microwaves", "sound", "electricity" ]
D
The electrical conductivity of a substance is a property that depends only on the type of substance. Silver, gold, and copper are excellent conductors of electricity, while glass and plastic are poor conductors. A larger or smaller piece of glass will not change this property. An intensive property is a property of mat...
openbookqa
obqa_02_03653
If a thing has a good impact on nature, it is most likely
[ "putting plastics in special containers", "burning old used tires", "putting cigarettes out in ponds", "using aerosol air fresheners" ]
A
recycling resources has a positive impact on the environment
medmcqa
medmcqa_05_03306
Carrier state does not exist for -
[ "Hepatitis B virus", "Hepatitis A virus", "Non A Non B Hepatitis", "Delta agent" ]
B
Recovery of Hepatitis is very slow,and also there is no carrier state REF:ANANTHANARAYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.541
sciq
sciq_01_06263
Because all animals require an external source of what, they are called heterotrophic?
[ "food", "water", "energy", "fuel" ]
A
27.1 | Features of the Animal Kingdom By the end of this section, you will be able to: • List the features that distinguish the kingdom Animalia from other kingdoms • Explain the processes of animal reproduction and embryonic development • Describe the roles that Hox genes play in development Even though members of the...
medmcqa
medmcqa_05_02049
Valve of Hasner ?
[ "Opening of nasolacrimal duct", "Sphenoidal sinus opening", "Frontal sinus opening", "Ethmoidal sinus opening" ]
A
Ans. is 'a' i.e., Opening of nasolacrimal ductLateral wall of nose It has 3 bony projections called as turbinates or conchae. From below upwards they are inferior, middle and superior turbinates. The inferior turbinate is a separate bone, while rest of the turbinates are a pa of ethmoidal bone. Below and lateral to eac...
ARC-Easy
arc_04_00983
Which is the most basic unit of living things?
[ "Cells", "Bones", "Tissues", "Organs" ]
A
null
sciq
sciq_01_06759
What type of organisms have internal clocks that regulate cyclic processes?
[ "protozoa", "eukaryotic", "fungi", "endogenous" ]
B
medmcqa
medmcqa_05_00091
Which of the following drug is used for long term maintenance in opioid addiction?
[ "Naloxone", "Naloxone", "Butylphenol", "Methadone" ]
D
Methadone has a long half life of 15-40 hours. Because of the extended duration of action it suppresses the withdrawal symptoms in dependent patients and is therefore used for long term maintenance in opioid addiction. Methadone is a slow-acting agonist of -opioid receptor. It is absorbed well from the GI tract and can...
math_qa
mathqa_03_00504
a towel , when bleached , lost 10 % of its length and 20 % of its breadth . what is the percentage decrease in area ?
[ "28 %", "30 %", "44 %", "54 %" ]
A
"percentage change in area = ( − 10 − 20 + ( 10 × 20 ) / 100 ) % = − 28 % i . e . , area is decreased by 28 % answer : a"
sciq
sciq_01_03674
Fermentation—of grains to produce beer, and of fruits to produce wine—is an ancient art that humans in most cultures have practiced for how long?
[ "decades", "eons", "years", "millennia" ]
D
Fermentation—of grains to produce beer, and of fruits to produce wine—is an ancient art that humans in most cultures have practiced for millennia. Wild yeasts are acquired from the environment and used to ferment sugars into CO2 and ethyl alcohol under anaerobic conditions. It is now possible to purchase isolated strai...
medmcqa
medmcqa_05_01410
The only FDA approved radioactive antibody that can be used for treatment of lymphoma:
[ "Trastuzumab", "Ibritumomab", "Rituximab", "Imatinib" ]
B
Ibritumomab is a TNF a inhibitor is a newly approved drug by the FDA for treating both Hodgkin and non-Hodgkin lymphomas. It is a monoclonal antibody radioimmunotherapy treatment for relapsed or refractory, low grade or transformed B cell non-Hodgkin's lymphoma, a lymphoproliferative disorder. Other given drugs are als...
ARC-Easy
arc_04_00579
Soda water is a liquid that has bubbles of carbon dioxide in it. Which term best describes soda water?
[ "a mixture", "a molecule", "an element", "a compound" ]
A
null
math_qa
mathqa_03_04341
the mean of 50 observations was 36 . it was found later that an observation 45 was wrongly taken as 23 . the corrected new mean is
[ "35.24", "36.14", "36.24", "36.44" ]
D
"solution correct sum = ( 36 x 50 + 45 - 23 ) = 1822 . â ˆ ´ correct mean = 1822 / 50 = 36.44 . answer d"
math_qa
mathqa_03_02237
on a certain day , orangeade was made by mixing a certain amount of orange juice with an equal amount of water . on the next day , orangeade was made by mixing the same amount of orange juice with twice the amount of water . on both days , all the orangeade that was made was sold . if the revenue from selling the orang...
[ "$ 015", "$ 0.20", "$ 0.30", "$ 0.40" ]
D
"on the first day 1 unit of orange juice and 1 unit of water was used to make 2 units of orangeade ; on the second day 1 unit of orange juice and 2 units of water was used to make 3 units of orangeade ; so , the ratio of the amount of orangeade made on the first day to the amount of orangeade made on the second day is ...
medmcqa
medmcqa_05_03161
Paul bunnel reaction is a ty pe of -
[ "Agglutination", "CF", "Precipitation", "Flocculation test" ]
A
Ans. is 'a' i.e., Agglutination test Precipitationo When a soluble antigen combines with its antibody in the presence of electrolytes (NaCI) at a suitable temperature and pH, the antigen - antibody complex forms an insoluble precipitate,o When instead of sedimenting, the precipitate remains suspended as floccules, the ...
ARC-Easy
arc_04_00593
Students on two different school campuses are comparing the growth rate of grass three weeks after fertilizer has been applied. The same fertilizer and the same amount of water are used on both campuses. Which additional variable is most important to control when the results of the two investigations are compared?
[ "type of grass used", "amount of trees in the area", "the weather conditions of the day", "the time of day the measurements are taken" ]
A
null
ARC-Easy
arc_04_01254
Which of these could cause water vapor to condense into rain droplets?
[ "sunlight warming the surface of oceans", "air rising into colder regions of the atmosphere", "lightning heating the air in the atmosphere", "winds blowing along the surface of the ground" ]
B
null
medmcqa
medmcqa_05_03949
Most common orbital cyst in children is
[ "Neuroenteric cyst", "Dermoid cyst", "Lymphoma", "Clobomatous cyst" ]
B
(Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 417) Epidermal dermoid cyst (dermoid) is the most common orbital cystic lesion in children, accounting for over 40% of all orbital lesions of childhood and for 89% of all orbital cystic lesions of childhood that come to biopsy or surgical removal.the m...
openbookqa
obqa_02_03295
If you want to walk over a lake, which of these is necessary?
[ "happy dogs", "freezing temperatures", "meowing cats", "hot lava" ]
B
freezing point means temperature below which a liquid freezes
medmcqa
medmcqa_05_01618
Most essential fatty acid is:
[ "Linolenic acid", "Linoleic acid", "Arachidonic acid", "Eicosapentanoic acid" ]
B
Ans: b (Linoleic acid) Ref: Vasudevan, 4th ed, p. 156; 5th ed, p. 166Essential fatty acids are linoleic acid and linolenic acidArachidonic acid can be formed if dietary supply of linoleic acid is sufficient.Saponification number -It is the no: of milligrams of KOFI requied to saponily fatty acids in 1 mg of the given f...
math_qa
mathqa_03_04882
two men a and b start from place x walking at 4 ½ kmph and 5 ¾ kmph respectively . how many km apart they are at the end of 6 ½ hours if they are walking in the same direction ?
[ "7 km", "6 km", "8 1 / 8 km", "9 km" ]
C
rs = 5 ¾ - 4 ½ = 1 ¼ t = 6 ½ h . d = 5 / 4 * 13 / 2 = 65 / 8 = 8 1 / 8 km answer : c
sciq
sciq_01_00419
What charge do atoms carry?
[ "positive", "negative", "static", "neutral" ]
D
Atoms, which are always neutral in electric charge, contain electrons as well as protons and neutrons. An electron has an electrical charge of -1. If an atom has three electrons, infer how many protons it has.
sciq
sciq_01_03030
Carbon fixation is the first step of what cycle involving light reactions?
[ "sun cycle", "life cycle", "water cycle", "calvin cycle" ]
D
As Melvin Calvin discovered, carbon fixation is the first step of a cycle. Like an electron transport chain, the Calvin Cycle, shown in Figure below , transfers energy in small, controlled steps. Each step pushes molecules uphill in terms of energy content. Recall that in the electron transfer chain, excited electrons ...
medmcqa
medmcqa_05_01972
In Leprosy which of the following is not seen:
[ "Abnormal EMG", "Voluntary muscle wasting", "Decreased Proprioception", "Decreased response to tactile sensation" ]
C
C i.e. Decreased proprioception - Nerves commonly involved in leprosy are. - Posterior tibial is the most frequently affected nerve f/b ulnarQ, median, lateral popliteal and facial. Ulnar & median nerve lesions are usually lowQ, causing small muscles but not deep flexor weakness, & anesthesia of two halves of hand (Roo...
openbookqa
obqa_02_02048
A highly polished surface will
[ "absorb light energy", "redirect light energy", "attract shadows", "shatter" ]
B
shiny things reflect light
sciq
sciq_01_04196
What is the leading cause of death worldwide?
[ "liver failure", "cancer", "lung disease", "coronary artery disease" ]
D
Heart: Coronary Artery Disease Coronary artery disease is the leading cause of death worldwide. It occurs when the buildup of plaque—a fatty material including cholesterol, connective tissue, white blood cells, and some smooth muscle cells—within the walls of the arteries obstructs the flow of blood and decreases the f...
medmcqa
medmcqa_05_01270
Vena caval opening is at what level in the diaphragm?
[ "T6", "T8", "T10", "T12" ]
B
Ans. is 'b' i.e., T8 Opening Level Part of diaphragm Shape Structures passing Vena caval T8 * Central tendon Quadrilateral 1. Inferior vena cava 2. Branches of right phrenic nerve Oesophageal T10 * Muscular portion derived from right crus Elliptical/oval 1. Oesophagus 2. Oesophageal branch of left gastric vessels 3. Va...
math_qa
mathqa_03_03392
the sub - duplicate ratio of 1 : 9 is
[ "4 : 3", "1 : 2", "1 : 3", "1 : 4" ]
C
"root ( 1 ) : root ( 9 ) = 1 : 3 answer : c"
openbookqa
obqa_02_01632
High tide is a stage in the
[ "food chain of the monarch butterfly", "moon tugging on saltwater", "timeline of all humanity", "life cycle of land mammals" ]
B
high tide is a stage in the tide cycle process
sciq
sciq_01_10579
What control reproductive cycles, which are in turn regulated by environmental cues?
[ "hormones", "nerve impulses", "enzymes", "brain waves" ]
A
math_qa
mathqa_03_04257
on a certain road 10 % of the motorists exceed the posted speed limit and receive speeding tickets , but 20 % of the motorists who exceed the posted speed limit do not receive speeding tickets . what percent of the motorists on the road exceed the posted speed limit ?
[ "10.5 %", "12.5 %", "15 %", "22 %" ]
B
"say there are 100 motorists . { # of motorists who exceed speed & receive tickets } + { # of motorists who exceed speed & do n ' t receive tickets } = { total # of motorist who exceed speed } ; given : { # of motorists who exceed speed & receive tickets } = 10 ; also , if { total # of motorist who exceed speed } = x ,...
ARC-Easy
arc_04_01063
The Heliocentric Theory, as supported by Copernicus, revolutionized scientific theories regarding
[ "the life cycle.", "the water cycle.", "the solar system.", "the immune system." ]
C
null
medmcqa
medmcqa_05_01070
Flexion of metacarpophalangeal joint and extension of interphalangeal joints is major action of
[ "Palmar interossei", "Dorsal interossei", "Lumbricals", "FDS" ]
C
It is the action of lumbricals.The dorsal interossei abduct the fingers. the palmar interossei adduct the fingers.The FDS flexes middle phalanx at PIP joints. ref :textbook of anatomy upper limb and thorax ,vishram singh ,2nd edition ,page no.144
openbookqa
obqa_02_02679
What is a radio used for?
[ "radiation", "human contact", "energy", "water" ]
B
a radio is used for communication
medmcqa
medmcqa_05_01367
CASPAR criteria is used in diagnosis of -
[ "Psoriatic arthritis", "Rheumatoid arthritis", "Ankyosing spondylitis", "Reactive synnovitis" ]
A
Ans. is 'a' i.e., Psoriatic arthritis o Classification criteria for psoriatic arthritis (CASPAR) is used for the diagnosis of psoriatic arthropathy.The CASPAR (classification Criteria for Psoriatic Arthritis) CriteriaTo meet the CASPAR criteria a patient must have inflammatory articular disease (joint, spine, or enthes...
medmcqa
medmcqa_05_01467
Liver biopsy in Malaria will have:
[ "Microabscesses", "Kupffer cell hyperplasia", "Piecemeal necrosis", "Non caseating granuloma" ]
B
Liver Biopsy in Malaria will have Kupffer cell hyperplasia with parasitize RBC and Hematin in it. Condition Seen in Piecemeal Necrosis (interface Hepatitis) Viral Hepatitis Autoimmune hepatitis Steatohepatitis Munro micro abscess Psoriasis Pautrier's micro abscess Mycosis fungoides/ Sezary Syndrome Non Caseating Granul...
ARC-Challenge
arc_04_02443
Which of these best defines communicable diseases?
[ "They can be cured.", "They are caused by bacteria.", "They are spread to others.", "They can spread only in winter." ]
C
null
sciq
sciq_01_07752
What occurs when two waves combine and cancel each other out?
[ "primitive interference", "molecular interference", "destructive interference", "terrible interference" ]
C
Destructive interference occurs when two waves combine and cancel each other out. This occurs when a peak in one wave lines up with a trough in the other wave.
math_qa
mathqa_03_03928
if n is a natural number , then ( 6 n 2 + 6 n ) is always divisible by :
[ "6 only", "12 only", "6 and 12 both", "by 18 only" ]
C
"( 6 n ^ 2 + 6 n ) = 6 n ( n + 1 ) , which is always divisible by 6 and 12 both , since n ( n + 1 ) is always even . answer c ) 6 and 12 both ."
sciq
sciq_01_09777
What connects the peripheral nervous system to the central nervous system?
[ "nerves", "fibers", "wires", "veins" ]
A
The peripheral nervous system consists of all the nervous tissue that lies outside the central nervous system. It is connected to the central nervous system by nerves.
sciq
sciq_01_10087
What is the most common life form in the ocean?
[ "coral", "kelp", "plankton", "algae" ]
C
When you think of life in the ocean, do you think of fish? Actually, fish are not the most common life forms in the ocean. Plankton are the most common. Plankton make up one of three major groups of marine life. The other two groups are nekton and benthos. Figure below shows the three groups.
math_qa
mathqa_03_03816
the ratio of 3 numbers is 5 : 3 : 4 and their sum is 108 . the second number of the 3 numbers is ?
[ "23", "27", "30", "32" ]
B
5 : 3 : 4 total parts = 12 12 parts - - > 108 1 part - - - - > 9 the second number of the three numbers is = 3 3 parts - - - - > 27 b )
sciq
sciq_01_08884
An isometric type of what occurs as the muscle produces tension without changing the angle of a skeletal joint?
[ "acceleration", "compression", "extension", "contraction" ]
D
10.4 | Nervous System Control of Muscle Tension By the end of this section, you will be able to: • Explain concentric, isotonic, and eccentric contractions • Describe the length-tension relationship • Describe the three phases of a muscle twitch • Define wave summation, tetanus, and treppe To move an object, referred t...
math_qa
mathqa_03_01900
today joelle opened an interest - bearing savings account and deposited $ 5,000 . if the annual interest rate is 4 percent compounded interest , and she neither deposits nor withdraws money for exactly 2 years , how much money will she have in the account ?
[ "$ 5200", "$ 5408", "$ 5208", "$ 5608" ]
B
"interest for 1 st year = 5000 * 4 / 100 = 200 interest for 2 nd year = 5200 * 4 / 100 = 208 total = 5000 + 200 + 208 = 5408 answer : b"
medmcqa
medmcqa_05_02219
Severe malnutrition is diagnosed if serum albumin level is less than:
[ "2 g/dl", "2.5 g/dl", "3 g/dl", "3.5 g/dl" ]
C
The best measure of protein nutrition is serum albumin. A level of <3.5 g/dl is considered mild malnutrition while level of less than 3 g/dl is graded as severe malnutrition. Ref: Park 22nd edition, page 565.
sciq
sciq_01_08528
What basic structure holds plants upright, bears leaves and other structures, and transports fluids between roots and leaves?
[ "stem", "flowers", "branches", "leaves" ]
A
Stems hold plants upright, bear leaves and other structures, and transport fluids between roots and leaves.
sciq
sciq_01_03783
The primary function of insulin is to facilitate the uptake of what into body cells?
[ "water", "chloride", "sucralose", "glucose" ]
D
Insulin The primary function of insulin is to facilitate the uptake of glucose into body cells. Red blood cells, as well as cells of the brain, liver, kidneys, and the lining of the small intestine, do not have insulin receptors on their cell membranes and do not require insulin for glucose uptake. Although all other b...
math_qa
mathqa_03_01337
the food in a camp lasts for 20 men for 50 days . if 20 more men join , how many days will the food last ?
[ "22 days", "25 days", "28 days", "16 days" ]
B
one man can consume the same food in 20 * 50 = 1000 days . 20 more men join , the total number of men = 40 the number of days the food will last = 1000 / 40 = 25 days . answer : b
ARC-Easy
arc_04_01611
An artificial pacemaker is a device that regulates the beat of the heart by an electrical stimulus. Some early pacemakers were powered by batteries and were worn externally with wires passing through the skin to the surface of the heart. Modern pacemakers are now much smaller and are implanted surgically. Which most li...
[ "the development of thinner wires", "the invention of lithium batteries", "mass production of pacemaker parts", "reducing the cost of producing pacemakers" ]
B
null
sciq
sciq_01_00369
What do hydrophilic substances have an affinity for?
[ "water", "soil", "air", "heat" ]
A
math_qa
mathqa_03_02450
if a number n is chosen at random from the set of two - digit integers whose digits are both prime numbers , what is the probability w that n is divisible by 3 ?
[ "1 / 3", "¼", "9 / 25", "5 / 16" ]
D
prime digits are : 2 , 3 , 5 , 7 total number of 2 digit # s with both digits prime are : 4 * 4 = 16 out of these numbers divisible by 3 = 33 , 27 , 57 , 72 and 75 . i had to find the numbers manually using the 4 numbers above . = > prob = 5 / 16 . ans d . took me 3 : 20 mins .
sciq
sciq_01_02310
All of the stages that a cell goes through make up what?
[ "photosynthesis", "glycolysis", "the cell cycle", "cytokineses" ]
C
Cell division is just one of the stages that a cell goes through during its lifetime. All of the stages that a cell goes through make up the cell cycle .