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7.76k
sciq
sciq_01_03684
Alzheimers disease is associated with memory loss in what group of people?
[ "juveniles", "elderly", "prehistoric", "immigrants" ]
B
One useful application of PET scanning is in the diagnosis of Alzheimer’s disease. This debilitating condition associated with memory loss primarily occurs in elderly individuals. A protein known as beta-amyloid gradually forms deposits, or plaques, in the brain. Severe memory loss and impaired movement appear to be di...
sciq
sciq_01_05786
What do we call the worldwide radio-navigation system formed from a constellation of 24 satellites and their ground stations?
[ "compass", "gps", "radio waves", "cellular network" ]
B
You must have a GPS receiver to use the system. You can buy many types of these in stores. The GPS receiver detects radio signals from nearby GPS satellites. There are precise clocks on each satellite and in the receiver. The receiver measures the time for radio signals from satellites to reach it. The receiver uses th...
sciq
sciq_01_08349
What body part boasts three articulations and includes the patella?
[ "ankle", "knee", "elbow", "hip" ]
B
The knee includes three articulations. The femoropatellar joint is between the patella and distal femur. The patella, a sesamoid bone incorporated into the tendon of the quadriceps femoris muscle of the anterior thigh, serves to protect this tendon from rubbing against the distal femur during knee movements. The medial...
ARC-Challenge
arc_04_02305
Elisa was classifying types of energy as either potential or kinetic. Which is a type of potential energy?
[ "sound energy", "radiant energy", "thermal energy", "chemical energy" ]
D
null
medmcqa
medmcqa_05_03232
Hypersensitivity vasculitis is most commonly seen in:
[ "Post capillary venules", "Aerioles", "Veins", "Capillaries" ]
A
. Post capillary venules
openbookqa
obqa_02_03621
DNA is a vehicle for passing inherited characteristics from parent to what?
[ "pets", "homes", "younglings", "food" ]
C
DNA is a vehicle for passing inherited characteristics from parent to offspring
sciq
sciq_01_08748
What causes earthquakes at mid-ocean ridges to be small and shallow?
[ "plates are thick , young , and cold", "plates are thick , old , and hot", "plates are thin , young , and hot", "plates are thin , young , and cold" ]
C
Earthquakes also occur at divergent plate boundaries. At mid-ocean ridges, these earthquakes tend to be small and shallow focus because the plates are thin, young, and hot. Earthquakes in the oceans are usually far from land, so they have little effect on peoples’ lives. On land, where continents are rifting apart, ear...
sciq
sciq_01_10294
What are some uses of chlorine gas?
[ "cleaning, disinfecting and in swimming pools", "washing hands", "fueling airplanes", "rooting plant cuttings" ]
A
You may be able to avoid some of the health effects of outdoor air pollution by staying indoors on high-pollution days. However, some indoor air is just as polluted as outdoor air.
sciq
sciq_01_01560
Birds possess a cloaca, a structure that allows water to be reabsorbed from waste back into this?
[ "eggs", "intestines", "blood stream", "skin" ]
C
Other modifications that reduce weight include the lack of a urinary bladder. Birds possess a cloaca, a structure that allows water to be reabsorbed from waste back into the bloodstream. Uric acid is not expelled as a liquid but is concentrated into urate salts, which are expelled along with fecal matter. In this way, ...
math_qa
mathqa_03_02486
the difference between the ages of two persons is 30 years . fifteen years ago , the elder one was twice as old as the younger one . the present age of the younger person is ?
[ "30 yr", "25 yr", "45 yr", "40 yr" ]
C
"let their ages be x years and ( x + 30 ) years then , ( x + 30 ) - 15 = 2 ( x - 15 ) x + 15 = 2 x - 30 x = 45 answer is c"
medmcqa
medmcqa_05_03507
Western equine encephalitis virus is transmitted by ?
[ "Anophales mosquito", "Culex mosquito", "Sandfly", "Aedes mosquito" ]
B
Ans. is 'B' i.e., Culex mosquito
openbookqa
obqa_02_00262
The sun was straight above us when we
[ "woke up", "went to work", "took a break", "went home" ]
C
the sun is located directly overhead at noon
medmcqa
medmcqa_05_02987
In AML best prognosis is seen with
[ "Acute megakaryocytic leukemia", "Acute monocytic leukemia", "Acute promyelocytic lukemia (M3)", "Erythroleukemia" ]
C
- Acute Promyelocytic Leukemia (APML): characterized by a gene rearrangement involving retinoic acid receptor It is very responsive to all-trans retinoic acid (ATRA, tretinoin) combined with anthracyclines and cytarabine. The success of this therapy makes Bone marrow transplantation unnecessary in 1st remission. Arseni...
openbookqa
obqa_02_03435
If a thing is up and then is down then it is
[ "seared", "invisible", "wet", "transported" ]
D
moving changes position
medmcqa
medmcqa_05_03325
Xeroderma pigmentosum is caused due to defect in: (Repeat)
[ "Base pair", "Nucleotide excision repair", "Mismatch repair", "Translocation" ]
B
Ref: Chapter 7. Neoplasia; page: 275; Robbins and Cot ran Pathologic Basis of Disease: 8t>? editionExplanation:* Defective DNA - repair syndromes are set of syndrome due to defect in DNA repair genes and resultant DNA instability.* These are autosomal recessive in inheritance and include:Xeroderma pigmentosumBloom synd...
sciq
sciq_01_02183
Atoms with the same atomic number but different mass numbers are called what?
[ "organisms", "reactions", "isotopes", "tropes" ]
C
Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The chapter on atoms, molecules, and ions introduced the basic idea of nuclear structure, that the nucleus of an atom is composed of protons and, with the exception of 11 H, neutrons. Recall that the number of protons in the nucleus ...
sciq
sciq_01_00385
What is the force of attraction between things that have mass
[ "gravity", "motion", "friction", "momentum" ]
A
Gravity has traditionally been defined as a force of attraction between things that have mass. The strength of gravity between two objects depends on their mass and their distance apart.
ARC-Challenge
arc_04_03121
What is a source of food and growth for a mushroom?
[ "rotting organisms", "sunshine", "minerals in soil", "water in soil" ]
A
null
sciq
sciq_01_11647
Since warmer molecules have more energy, they are more what?
[ "dense", "active", "inactive", "abundant" ]
B
The density of air varies from place to place. Air density depends on several factors. One is temperature. Like other materials, warm air is less dense than cool air. Since warmer molecules have more energy, they are more active. The molecules bounce off each other and spread apart. Another factor that affects the dens...
ARC-Easy
arc_04_02054
Human actions can change the rate at which soil erodes. Which of the following would most likely slow the rate of soil erosion?
[ "applying nitrogen-rich fertilizers", "keeping grasses trimmed short", "building houses on stilts", "planting trees along cliffs" ]
D
null
sciq
sciq_01_02404
What neurotransmitter is associated with the fight-or-flight response?
[ "endorphins", "bile", "stomach acid", "adrenaline" ]
D
Adrenaline, or epinephrine, is a hormone and a neurotransmitter. It increases heart rate, constricts blood vessels, dilates air passages, and participates in the fight-or-flight response of the sympathetic nervous system. Adrenaline is produced in the adrenal medulla of the adrenal gland. So how does it effect processe...
sciq
sciq_01_01464
What are the long, thin structures that protrude from the cell membrane and help single-celled organisms move or swim towards food?
[ "tentacles", "sporangia", "flagella", "microvilli" ]
C
Flagella ( flagellum , singular) are long, thin structures that protrude from the cell membrane. Both eukaryotic and prokaryotic cells can have flagella. Flagella help single-celled organisms move or swim towards food. The flagella of eukaryotic cells are normally used for movement too, such as in the movement of sperm...
ARC-Easy
arc_04_00650
Which is the most likely response of a human to an increase in temperature?
[ "increasing the amount of perspiration", "increasing waste elimination from the bladder", "a reduction in the desire for liquids", "a contraction in blood vessels in the skin" ]
A
null
math_qa
mathqa_03_03589
steve traveled the first 2 hours of his journey at 50 mph and the remaining 3 hours of his journey at 80 mph . what is his average speed for the entire journey ?
[ "68 mph", "56.67 mph", "53.33 mph", "64 mph" ]
A
"distance traveled in 2 hours = 2 * 50 = 100 m distance traveled in 3 hours = 3 * 80 = 240 m total distance covered = 240 + 100 = 340 m total time = 2 + 3 = 5 h hence avg speed = total distance covered / total time taken = 340 / 5 = 68 mph answer : a"
math_qa
mathqa_03_01707
a bucket full of nuts was discovered by the crow living in the basement . the crow eats a sixth of the total number of nuts in 8 hours . how many hours in total will it take the crow to finish a quarter of the nuts ?
[ "10", "12", "14", "16" ]
B
"in one hour , the crow eats 1 / 48 of the nuts . ( 1 / 4 ) / ( 1 / 48 ) = 12 hours the answer is b ."
math_qa
mathqa_03_00396
the sum of two numbers is 528 and their h . c . f . is 33 . the number of pairs of numbers satisfying the above conditions is :
[ "4", "6", "8", "12" ]
A
"explanation : let the required numbers be 33 a and 33 b . then , 33 a + 33 b = 528 . = > a + b = 16 . now , co - primes with sum 16 are ( 1 , 15 ) , ( 3 , 13 ) , ( 5 , 11 ) and ( 7 , 9 ) . â ˆ ´ required numbers are ( 33 * 1 , 33 * 15 ) , ( 33 * 3 , 33 * 13 ) , ( 33 * 5 , 33 * 11 ) , ( 33 x 7 , 33 x 9 ) . the number o...
sciq
sciq_01_10975
Tuataras, lizards, and snakes are members of what subclass of reptiles?
[ "arthropods", "staurikosaurus", "lepidosaurs", "dinosaurs" ]
C
sciq
sciq_01_05036
The sun’s heat can also be trapped in your home by using south facing windows and good what?
[ "curtains", "vegetation", "insulation", "floors" ]
C
Solar energy is used to heat homes and water, and to make electricity. Scientists and engineers have many ways to get energy from the Sun ( Figure above ). One is by using solar cells. Solar cells are devices that turn sunlight directly into electricity. Lots of solar cells make up an individual solar panel. You may ha...
ARC-Challenge
arc_04_02937
Researchers recently discovered a gene in humans that previously was unknown to science. Which statement best explains why the gene probably was not discovered much sooner?
[ "The gene only recently evolved in humans.", "The technology used to study genes is still being developed.", "Scientists were not interested in genes until a few years ago.", "Scientists were sure they had already discovered every possible gene." ]
B
null
medmcqa
medmcqa_05_02258
Reticulocytes are stained by ?
[ "Supravital stain", "Purssian blue stain", "H and E stain", "Reticulin stain" ]
A
Ans. is 'a' i.e., Supravital stain Usually supravital stains (methylene blue and Brilliant cresyl blue) are used for reticulocytes.
math_qa
mathqa_03_02068
a baker makes chocolate cookies and peanut cookies . his recipes allow him to make chocolate cookie in batches of 7 and peanut cookies in batches of 6 . if he makes exactly 99 cookies , what is the minimum number of chocolate chip cookies he makes ?
[ "7", "14", "21", "28" ]
C
"7 c + 6 p = 99 we need to maximize p to minimize c so that the eq is also satisfied try substitution for cp to solve so that eqn is satisfied the least value of c for which equation gets satisfied is 5 i . e . 7 * 3 + 6 * 13 = 21 + 78 = 99 hence c is the answer"
sciq
sciq_01_09629
What are electromagnetic waves with the longest wavelengths called?
[ "radio waves", "channel waves", "sound waves", "infrared waves" ]
A
Electromagnetic waves on the left side of the Figure above are called radio waves. Radio waves are electromagnetic waves with the longest wavelengths. They may have wavelengths longer than a soccer field. They are also the electromagnetic waves with the lowest frequencies. With their low frequencies, they have the leas...
math_qa
mathqa_03_04218
the sum of four consecutive even numbers is 140 . what would be the largest number ?
[ "33", "38", "70", "123" ]
B
"let the four consecutive even numbers be 2 ( x - 2 ) , 2 ( x - 1 ) , 2 x , 2 ( x + 1 ) their sum = 8 x - 4 = 140 = > x = 18 smallest number is : 2 ( x + 1 ) = 38 . answer : b"
sciq
sciq_01_08844
What is determined by the amount of energy in molecules?
[ "momentum", "radioactivity", "kingdom", "state of matter" ]
D
The amount of energy in molecules of matter determines the state of matter . Matter can exist in one of several different states, including a gas, liquid, or solid state. These different states of matter have different properties, which are illustrated in Figure below . Gasses have the most energy, and solids have the ...
medmcqa
medmcqa_05_00897
Illuminated Frenzel glasses are used in detecting
[ "Nystagmus", "Heterophoria", "Esotropia", "Astigmatism" ]
A
(Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 358 - 362)Illuminated Frenzel glasses (+20 lenses) are useful for abolishing fixation and thus revealing peripheral vestibular nystagmus
math_qa
mathqa_03_04773
y = x ^ 2 + bx + 128 cuts the x axis at ( h , 0 ) and ( k , 0 ) . if h and k are integers , what is the least value of b ?
[ "- 129", "- 132", "32", "64" ]
A
"as the curve cuts the x - axis at ( h , 0 ) and ( k , 0 ) . therefore h , k are the roots of the quadratic equation . for the quadratic equation is in the form of ax ^ 2 + bx + c = 0 , the product of the roots = c / a = 128 / 1 = 64 and the sum of the roots = - b / a = - b / 1 128 can be expressed as product of two nu...
math_qa
mathqa_03_04725
on dividing 127 by a number , the quotient is 5 and the remainder is 2 . find the divisor .
[ "25", "30", "35", "40" ]
A
"d = ( d - r ) / q = ( 127 - 2 ) / 5 = 125 / 5 = 25 a"
sciq
sciq_01_08879
What is the term for the series of life stages and events that a sexually reproducing organism goes through?
[ "age", "society cycle", "life cycle", "existence" ]
C
Sexual reproduction occurs in a cycle. Diploid parents produce haploid gametes that unite and develop into diploid adults, which repeat the cycle. This series of life stages and events that a sexually reproducing organism goes through is called its life cycle . Sexually reproducing organisms can have different types of...
math_qa
mathqa_03_03749
a , b and c have rs . 500 between them , a and c together have rs . 200 and b and c rs . 340 . how much does c have ?
[ "50", "40", "267", "29" ]
B
"a + b + c = 500 a + c = 200 b + c = 340 - - - - - - - - - - - - - - a + b + 2 c = 540 a + b + c = 500 - - - - - - - - - - - - - - - - c = 40 answer : b"
medmcqa
medmcqa_05_03868
Tumor invades muscularis propria and 2 lymph nodes involved. TNM staging is
[ "T2 N1", "T2 N2", "T3 N1", "T3 N2" ]
A
T1 Invades submucosaT2Invades muscularis propriaT3Invades through the muscularis propria into pericolrectal tissuesT4aInvades through the visceral peritoneumT4bDirectly invades to adjacent organs or structuresN1aOne node positiveN1b2-3 nodes positiveN1cNo regional lymph nodes positive, but there are tumour deposits in ...
sciq
sciq_01_07784
Ciliary muscles control the shape of the lens, which bends light and focuses it on what?
[ "the retina", "the vitreous fluid", "the pupil", "the cornea" ]
A
medmcqa
medmcqa_05_03978
The skin overlying the region where a venous "cut down" is made to access the great saphenous vein is supplied by
[ "Femoral nerve", "Tibal nerve", "Sural nerve", "Superficial perineal nerve" ]
A
(Femoral nerve) * Great saphenous vein lies in the medial side of the leg and thigh, it is the MC site of venous cut down * It is accompanied by saphenous nerve all along, the nerve which supplies the medial aspect of the leg and dorsum of the foot till the ball of great toe. * Saphenous nerve itself is a branch of fem...
sciq
sciq_01_03645
What layer of soil, essential for farming, has the highest proportion of organic material?
[ "humus", "topsoil", "bedrock", "subsoil" ]
B
Topsoil has the highest proportion of organic material. Topsoil is essential for farming.
sciq
sciq_01_10922
The wavelength of a what type of wave can be measured as the distance between two adjacent compressions?
[ "lateral", "vertical", "longitudinal", "horizontal" ]
C
The wavelength of a transverse wave can be measured as the distance between two adjacent crests. The wavelength of a longitudinal wave can be measured as the distance between two adjacent compressions.
math_qa
mathqa_03_01517
3 partners a , b , c starts a business . twice a ' s capital is equal to thrice b ' s capital and b ' s capital is 4 times c ' s capital . out of a total profit of rs . 16500 at the end of the year , b ' s share is
[ "rs . 4000", "rs . 6000", "rs . 7500", "rs . 6600" ]
B
solution let c = x . then , b = 4 x and 2 a = 3 x 4 x = 12 x or a = 6 x . ∴ a : b : c = 6 x : 4 x : x = 6 : 4 : 1 . so b ' s capital = rs ( 16500 x 4 / 11 ) = rs . 6000 . answer b
ARC-Easy
arc_04_01782
Which of the following can only be seen with a telescope?
[ "the moon-like phases of Venus", "the phases of Earth's moon", "a lunar eclipse", "a solar eclipse" ]
A
null
sciq
sciq_01_05340
What is the tendency of an object to remain at rest or remain in motion called?
[ "flow", "magnetism", "impetus", "inertia" ]
D
4.2 Newton’s First Law of Motion: Inertia • Newton’s first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. • Inertia is the tendency of an object to remain at rest or r...
medmcqa
medmcqa_05_03977
The atachment site of DNA dependent RNA polymerase to a gene is the -
[ "Operator", "Promoter", "Structural gene", "Regulatory gene" ]
B
B i.e. Promoter
sciq
sciq_01_08359
What is the name of the protein that is found in hairs and nails?
[ "cellulose", "Skin", "chromatin", "keratin" ]
D
Along with the skin, the integumentary system includes the nails and hair. Both the nails and hair contain the tough protein, keratin. The keratin forms fibers, which makes your nails and hair tough and strong. Keratin is similar in toughness to chitin, the carbohydrate found in the exoskeleton of arthropods.
sciq
sciq_01_02587
What two planets is the asteroid belt found between?
[ "Jupiter and Earth", "Jupiter and Saturn", "Mars and Earth", "mars and jupiter" ]
D
Asteroids are irregularly-shaped, rocky bodies that orbit the Sun. Most of them are found in the asteroid belt, between the orbits of Mars and Jupiter.
sciq
sciq_01_08044
When does most amphibians' parenting end?
[ "once offspring reach adulthood", "once eggs have been laid", "after adolescence", "never" ]
B
Amphibians generally lay large number of eggs. Often, many adults lay eggs in the same place at the same time. This helps to ensure that eggs will be fertilized and at least some of the embryos will survive. Once eggs have been laid, most amphibians are done with their parenting.
sciq
sciq_01_01748
What type of map shows the elevation and features in an area?
[ "gradient", "geographic", "topographic", "meteorological" ]
C
Relief , or terrain, includes all the landforms of a region. A topographic map shows the height, or elevation , of features in an area. This includes mountains, craters, valleys, and rivers. For example, Figure below shows the San Francisco Peaks in northern Arizona. Features on the map include mountains, hills and lav...
sciq
sciq_01_09837
Alveoli can be found in which organ in the human body?
[ "Liver", "lungs", "Heart", "Stomach" ]
B
Respiratory tree: terminates in alveolus, alveoli. Respiratory bronchioles branch into alveolar ducts and into alveoli. Alveolus: microscopic air sacs, 300 million of these in human lungs. Total surface area large. Gas diffuses micrometer, very tiny distance. Nervous System Composed of tissues designed to integrate sen...
openbookqa
obqa_02_01258
A person wants to add some dill to their burger for dinner, so they would get it from
[ "a sawmill", "a planter", "a school", "a cow" ]
B
plants are the source of spices
sciq
sciq_01_10230
Which vertebrates were the first with four limbs?
[ "birds", "reptiles", "bony fishes", "amphibians (or tetrapods)" ]
D
Amphibians are the first true tetrapods, or vertebrates with four limbs.
sciq
sciq_01_03294
What kind of energy constitutes the total kinetic energy of all the atoms that make up an object?
[ "atmospheric energy", "kinetic energy", "thermal energy", "phenomena energy" ]
C
The atoms that make up matter are in constant motion, so they have kinetic energy. All that motion gives matter thermal energy. Thermal energy is defined as the total kinetic energy of all the atoms that make up an object. It depends on how fast the atoms are moving and how many atoms the object has. Therefore, an obje...
openbookqa
obqa_02_04678
Which animal interacts most with a peony?
[ "human", "bee", "elephant", "worm" ]
B
A bee is a pollinating animal
sciq
sciq_01_10077
The tiny hair present on mucus membranes is known as?
[ "tissue", "collagen", "cilia", "dendrites" ]
C
Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus , a slimy substance that traps pathogens. The membranes also have hair-like cilia. The cilia sweep mucus and pathogens toward body openings where they can ...
sciq
sciq_01_03364
The carrying angle is larger in females to accommodate their what?
[ "wider pelvis", "broader shoulders", "narrower pelvis", "cranium" ]
A
the ulna and radius bones. The small, rounded area that forms the distal end is the head of the ulna. Projecting from the posterior side of the ulnar head is the styloid process of the ulna, a short bony projection. This serves as an attachment point for a connective tissue structure that unites the distal ends of the ...
openbookqa
obqa_02_04691
An active oven will make the mercury in a thermometer go
[ "lower", "slower", "upwards", "brighter" ]
C
temperature is a measure of heat energy
sciq
sciq_01_02649
In chemical reactions, what substances can act like metals or nonmetals, depending on their number of electrons?
[ "synthetics", "minerals", "diacritics", "metalloids" ]
D
How metalloids behave in chemical interactions with other elements depends mainly on the number of electrons in the outer energy level of their atoms. Metalloids may act either like metals or nonmetals in chemical reactions.
medmcqa
medmcqa_05_02918
Proximal urethra contains which epithelium
[ "Cuboidal Epithelium", "Columnar Epithelium", "Stratified Epithelium", "Transitional Epithelium" ]
D
The proximal urethra is lined by transitional epithelium cells. Mid urethra - Pseudostratified or stratified columnar epithelium. Distal urethra is lined by stratified squamous epithelium cells
medmcqa
medmcqa_05_04974
Pearson's Coefficient of skewness is defined as:
[ "(Mean-Mode) / SD", "(Median-Mode) / SD", "SD / (Mean - Mode)", "SD / (Median -Mode)" ]
A
The coefficient used for checking the skewness of data, is called as the Karl Pearson coefficient, and is calculated as (Mean - Mode) S.D. Ref: Instant Medical Biostatistics, By Ranjan Das, Papri N. Das, 2009 Ane's Instant Medical Series, Page 41, 42.
medmcqa
medmcqa_05_03331
Among the following anaesthetic drug/inducing agents which should be avoided in a patient with a history of epilepsy
[ "propofol", "Thiopentone", "Ketamine", "Midazolam" ]
C
The barbiturates (thiopental, methohexital, and pentobarbital) and propofol are well established as agents for the treatment of refractory status epilepticus. Benzodiazepines too are used in status epilepticus. In ketamine, myoclonic activity is associated with increased subcoical electrical activity, which is not appa...
ARC-Easy
arc_04_00080
Which of these animals has a young form that looks the most like the adult form?
[ "moth", "human", "frog", "butterfly" ]
B
null
sciq
sciq_01_04513
What kind of charge does a proton have?
[ "constant", "positive", "negative", "ionic" ]
B
Electric charge is a physical property of particles or objects that causes them to attract or repel each other without touching. All electric charge is based on the protons and electrons in atoms. A proton has a positive electric charge, and an electron has a negative electric charge (see Figure below ).
openbookqa
obqa_02_00216
Why was my son-in-law required to add rugs or carpeting to his upstairs apartment when the ground floor wasn't?
[ "So it would look good then prospective renters took a tour", "Because they didn't want him to scratch up the wood floors.", "Because they didn't want the downstairs renters to be as likely to complain about noise", "Because they didn't want to pay for carpeting themselves." ]
C
carpet absorbs sound
sciq
sciq_01_08891
What device is a magnetic disc that provides long-term storage for programs and data?
[ "floppy drive", "software", "cassette", "hard drive" ]
D
The hard drive is a magnetic disc that provides long-term storage for programs and data.
sciq
sciq_01_09022
What forms the small holes found in bread?
[ "carbon monoxide gas", "yeast", "carbon dioxide gas", "oxygen" ]
C
The small holes in bread are formed by bubbles of carbon dioxide gas. The gas was produced by alcoholic fermentation carried out by yeast.
sciq
sciq_01_03471
The primary lymphoid organs are the bone marrow and what else?
[ "pinneal gland", "kidneys", "thymus gland", "thyroid" ]
C
Primary Lymphoid Organs and Lymphocyte Development Understanding the differentiation and development of B and T cells is critical to the understanding of the adaptive immune response. It is through this process that the body (ideally) learns to destroy only pathogens and leaves the body’s own cells relatively intact. T...
sciq
sciq_01_01289
What term refers to the deliberate prevention of pregnancy?
[ "contraception", "abortion", "cessation", "reproduction" ]
A
medmcqa
medmcqa_05_03327
Parathyroid autotransplantation is done in which of the following muscle?
[ "Brachioradials", "Biceps", "Triceps", "Saorius" ]
A
Parathyroid auto transplantation is done in 2 muscles Sternocleidomastoid muscle Brachioradialis of non-dominant hand SCM Brachioradialis Indication: Accidental removal of PT gland while performing a thyroidectomy. | A small amount of the PT gland is auto-transplanted into SCM muscle. Indication: Hyperparathyroidism du...
sciq
sciq_01_01884
Muscles that move what long bone originate on the pelvic girdle?
[ "femur", "sacrum", "tibia", "patella" ]
A
Gluteal Region Muscles That Move the Femur Most muscles that insert on the femur (the thigh bone) and move it, originate on the pelvic girdle. The psoas major and iliacus make up the iliopsoas group. Some of the largest and most powerful muscles in the body are the gluteal muscles or gluteal group. The gluteus maximus ...
math_qa
mathqa_03_03094
if a is an integer greater than 6 but less than 17 and b is an integer greater than 3 but less than 29 , what is the range of a / b ?
[ "15 / 4", "13 / 2", "9 / 7", "1 / 5" ]
A
"the way to approach this problem is 6 < a < 17 and 3 < b < 29 minimum possible value of a is 7 and maximum is 16 minimum possible value of b is 4 and maximum is 28 range = max a / min b - min a / max b ( highest - lowest ) 16 / 4 - 7 / 28 = 15 / 4 hence a"
ARC-Easy
arc_04_01380
Why do dogs have most of the characteristics of their parents?
[ "They inherit them from their parents.", "They live in the same habitats as their parents.", "They learn them by observing their parents.", "They eat the same foods as their parents." ]
A
null
medmcqa
medmcqa_05_00681
Which of the following drug should not be used to treat Klebisella infection?
[ "Ampicillin", "Amikacin", "Imipenem", "Tigecycline" ]
A
Ans. is 'a' i.e. Ampicillin Treatment of Klebsiella infection o Klebsiella pneumoniae and K.oxytoca are intrinsically resistant to ampicillin and ticarcillin, and nitrofurantoin is only poorly active against them. o Empirical treatment of serious or health care-associated Klebsiella infections include amikacin, or Carb...
ARC-Easy
arc_04_00512
The smallest part of an element that retains the properties of the element is the
[ "proton.", "nucleus.", "electron.", "atom." ]
D
null
math_qa
mathqa_03_01486
the dimensions of a field are 10 m by 10 m . a pit 10 m long , 5 m wide and 4 m deep is dug in one corner of the field and the earth removed has been evenly spread over the remaining area of the field . what will be the rise in the height of field as a result of this operation ?
[ "2 m", "3 m", "4 m", "5 m" ]
C
"the volume of the earth removed is 10 * 5 * 4 = 200 m ^ 3 . the remaining area of the field is 10 * 10 - 10 * 5 = 50 m ^ 2 . 200 m ^ 3 of the earth evenly spread over the area of 50 m ^ 2 will rise the height by ( height ) = ( volume ) / ( area ) = 200 / 50 = 4 m . answer : c"
sciq
sciq_01_11018
Which class of acids acetic acid (ch 3 cooh) belongs to?
[ "anorganic acids", "organic acids", "strong acids", "common acids" ]
B
Not all hydrogen atoms in molecular compounds are ionizable. In methane (CH 4 ), the hydrogen atoms are covalently bonded to carbon in bonds that are only slightly polar. The hydrogen atoms are not capable of ionizing and methane has no acidic properties. Acetic acid (CH 3 COOH) belongs to a class of acids called organ...
medmcqa
medmcqa_05_01098
In a study in the UK, an association was found between the sale of antiarrhythmic drug and an increase in deaths due to asthma. This is an example of
[ "Ecological study", "Cohort study", "Case reference study", "Experimental study" ]
A
Ans. is 'a' i.e. Ecological study Repeat May 08 www. ucel ac. uk. rlos/specs/rlo_observational_study. doc; http.//cancersupportivecare. com/epidemiology.html] For explanation see May 08
medmcqa
medmcqa_05_00234
A patient on treatment for leukemia, develops chest pain, pulmonary infiltrates and pleural effusion. The likely cause is -
[ "Daunorubicin", "Hydroxyurea", "Cytarabine", "Tretinoin" ]
D
Ans. is 'd' i.e., Tretinoin o Tretinoin causes chest pain, pleuritis, pulmonary infiltrates and pleural effusion. It is a known human teratogen. Daunorubicin and doxorubicin cause cardiotoxicity manifested as arrhythmias and CHF.
sciq
sciq_01_10492
What kind of compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero?
[ "zero charged compunds", "ionic compounds", "zeronic ions", "neutral compounds" ]
B
Summary The atoms in chemical compounds are held together by attractive electrostatic interactions known as chemical bonds. Ionic compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero. The ions are held together in a regular spatial arrangement by electrostatic fo...
sciq
sciq_01_00550
What are the high points of a transverse wave called?
[ "ridges", "troughs", "crests", "peaks" ]
C
A transverse wave can be characterized by the high and low points reached by particles of the medium as the wave passes through. This is illustrated in Figure below . The high points are called crests, and the low points are called troughs.
medmcqa
medmcqa_05_00540
'Hatter's shakes' are see in poisoning due to:
[ "Mercury", "Arsenic", "Lead", "Copper" ]
A
Ans: A (Mercury) Ref: The Essentials of Forensic Medicine and Toxicology by KS Narayan Reddy. 29th edition. 2010.Explanation:Symptoms of Mercury Poisoning:Acid metallic taste, hoarse voice, greyish white coating of tongue, blood-stained stool, circulatory collapse, necrosis of jaw-, membranous, colitis, proximal renal ...
sciq
sciq_01_02562
Where do plates move apart in oceans and on land?
[ "divergent plate boundaries", "coastal zones", "unsettled plate boundaries", "volcanic ridges" ]
A
Plates move apart at divergent plate boundaries. This can occur in the oceans or on land.
math_qa
mathqa_03_00735
if the compound interest on a certain sum of money for 7 years at 10 % per annum be rs . 993 , what would be the simple interest ?
[ "rs . 880", "rs . 890", "rs . 895", "rs . 2100" ]
D
"let p = principal a - amount we have a = p ( 1 + r / 100 ) 3 and ci = a - p atq 993 = p ( 1 + r / 100 ) 3 - p ? p = 3000 / - now si @ 10 % on 3000 / - for 7 yrs = ( 3000 x 10 x 7 ) / 100 = 2100 / - answer : d ."
openbookqa
obqa_02_00615
What do predators live near in the same environment?
[ "Their future Prey", "Their water source", "Their offspring", "Their dens" ]
A
most predators live near the same environment as their prey
openbookqa
obqa_02_04788
To replenish the shade in a city that had been provided by trees that were felled by a storm:
[ "grow gills and live on a raft", "use a large lawn mower", "get out your weed whacker", "introduce replacement timber items" ]
D
timber companies cut down trees
ARC-Easy
arc_04_01786
Toni got a cut on her arm while playing in a softball game. A few weeks later, the cut was healed. Which process is most responsible for repairing the cut?
[ "signals transported by nerve cells", "exchange of oxygen in the lungs", "transport of waste by blood", "reproduction of skin cells" ]
D
null
medmcqa
medmcqa_05_02742
Retinal detachment occurs in which layer?
[ "Sensory retina", "Pigmentary retina", "Inner nuclear layer", "Outer plexiform layer" ]
A
Sensory retina REP: Khurana 4th ed p. 275 "Retinal detachment is defined as separation of neurosensory retina from pigmentary retina"
sciq
sciq_01_07428
Why do birds need a light-weight body?
[ "to stay aloft", "water flotation", "for cooling", "food shortages" ]
A
Birds need a light-weight body in order to stay aloft. Even so, flying is hard work, and flight muscles need a constant supply of oxygen- and nutrient-rich blood. The organ systems of birds are adapted to meet these needs.
math_qa
mathqa_03_01765
40 % of a number is more than 20 % of 650 by 190 . find the number ?
[ "299", "277", "800", "289" ]
C
"( 40 / 100 ) * x – ( 20 / 100 ) * 650 = 190 2 / 5 x = 320 x = 800 answer : c"
sciq
sciq_01_05500
The three main rock types are igneous, metamorphic, and what?
[ "sedimentary", "silicate", "basalt", "crystalline" ]
A
The three main rock types are igneous, metamorphic, and sedimentary.
math_qa
mathqa_03_00600
three machines , each working at the same constant rate , together can complete a certain job in 18 days . how many additional machines , each working at the same constant rate , will be needed to complete the job in 9 days ?
[ "3", "5", "7", "9" ]
A
"rate of one machine = 1 job / ( 18 * 3 ) days let x = number of machines needed to complete the job in 9 days 1 / ( 3 * 18 ) * 9 * x = 1 job x = 6 6 - 3 = 3 answer : a"
sciq
sciq_01_05331
What are the devices placed in electric circuits where charge can build up, which store energy when charged and release it when they discharge?
[ "capacitors", "generators", "resistors", "antennas" ]
A
When current flows through wires and resistors in a circuit as a result of a difference in electric potential, charge does not build up significantly anywhere on its path. Capacitors are devices placed in electric circuits where charge can build up. The amount of charge a capacitor can store before it “fills up” depend...
medmcqa
medmcqa_05_01372
Retinoblastoma is
[ "Autosomal dominant", "Autosomal recessive", "X - linked recessive", "X- linked dominant" ]
A
(Autosomal dominant) (280- Khurana 4th)RETINOBLASTOMA - Most common intraocular tumour of childhood and malignant melanoma of choroid in adults*** Identified as band on the long arm of chromosome 13(13ql4)* Most hereditary cases are multifocal* Inheritance is autosomal dominant and the risk of transmitting the gene mut...
sciq
sciq_01_00937
In a single-celled organism such as chlamydomonas, there is no what after fertilization?
[ "meiosis", "mitosis", "germination", "spawning" ]
B
Reproduction of Green Algae Green algae reproduce both asexually, by fragmentation or dispersal of spores, or sexually, by producing gametes that fuse during fertilization. In a single-celled organism such as Chlamydomonas, there is no mitosis after fertilization. In the multicellular Ulva, a sporophyte grows by mitosi...
openbookqa
obqa_02_02341
Within a power station meant to process coal, electricity is
[ "broken", "reaped", "destroyed", "devasted" ]
B
coal is used to produce electricity by burning in coal-fire power stations
sciq
sciq_01_10334
What group of organisms was initially misclassified as plants because they also lack the ability to move, grow in soil, and have cell walls?
[ "algae", "gymnosperm", "protozoa", "fungi" ]
D
For a long time, scientists classified fungi as members of the Plant Kingdom. Fungi share several obvious traits with plants. For example, both fungi and plants lack the ability to move. Both grow in soil, and both have cell walls. Some fungi even look like plants.
sciq
sciq_01_02166
Rain dissolves fertilizer in the soil, what carries it away?
[ "fossils", "carbon ?", "clouds", "runoff?" ]
D
Rain dissolves fertilizer in the soil. Runoff carries it away. The fertilizer ends up in bodies of water, from ponds to oceans. Nitrogen is a fertilizer in the water. Since there is a lot of nitrogen, it causes algae to grow out of control. Pictured below is a pond covered with algae ( Figure below ). Algae use up carb...