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math_qa
mathqa_03_04202
in a division sum , the remainder is 6 and the divisor is 5 times the quotient and is obtained by adding 2 to the thrice of the remainder . the dividend is :
[ "86", "88", "92", "94" ]
A
"divisor = ( 6 * 3 ) + 2 = 20 5 * quotient = 20 quotient = 4 . dividend = ( divisor * quotient ) + remainder dividend = ( 20 * 4 ) + 6 = 86 . a"
sciq
sciq_01_07099
Hydrogen gas is generated by the reaction of nitric acid and what else?
[ "martian iron", "elemental iron", "carbon", "gaseous iron" ]
B
E XA MP L E 1 7 Hydrogen gas is generated by the reaction of nitric acid and elemental iron. The gas is collected in an inverted 2.00 L container immersed in a pool of water at 22°C. At the end of the collection, the partial pressure inside the container is 733 torr. How many moles of H2 gas were generated?.
ARC-Easy
arc_04_01767
Which of these cycles takes 24 hours?
[ "Earth rotating on its axis", "Earth revolving around the Sun", "the Moon rotating on its axis", "the Moon revolving around Earth" ]
A
null
medmcqa
medmcqa_05_04832
Plasma cells are derived from:
[ "T cells", "B cells", "Macrophages", "Neutrophils" ]
B
Ans. is 'b' i.e., B cells(Ref: Robbin's 7th/e, p. 198, 199; Ananthanarayan, 9th/e, p. 136)* An antigen interacts with the B lymphocyte that shows the best "fit" by virtue of its immunoglobulin surface receptor. When antigen binds to this BCR, the B cell is stimulated to divide and form a clone (clonal selection). Such ...
sciq
sciq_01_07734
When did we learn there was a hole in the ozone layer?
[ "1950s", "1990's", "1970s", "1980s" ]
D
Ozone near the ground harms human health. Ground-level ozone is a pollutant. But the ozone layer in the stratosphere protects us from harmful solar rays. That’s why people were alarmed in the 1980s to learn that there was a hole in the ozone layer.
math_qa
mathqa_03_00147
if the cost price of 20 articles is equal to the selling price of 15 articles , what is the % profit or loss made by the merchant ?
[ "25 % loss", "33.33 % profit", "20 % loss", "20 % profit" ]
B
"let the cost price of 1 article be $ 1 . therefore , cost price of 20 articles = 20 * 1 = $ 20 the selling price of 15 articles = cost price of 20 articles = $ 15 . now , we know the selling price of 15 articles . let us find the cost price of 15 articles . cost price of 15 articles = 15 * 1 = $ 15 . therefore , profi...
medmcqa
medmcqa_05_01365
independent assoment of chromosomes occurs at which level ?
[ "primordial germ cells to spermatogonia", "spermatogonia to primary spermatocytes", "primary spermatocytes to secondary spermatocytes", "secondary spermatocytes to spermatids" ]
C
A This example shows just two pairs of homologous chromosomes in the nucleus of a diploid (2n) reproductive cell. Maternal and paternal chromosomes, shown in pink and blue, have already been duplicated. B Either chromosome of a pair may get attached to either spindle pole during meiosis I. With two pairs of homologous ...
ARC-Easy
arc_04_00685
What is the primary source of energy for organisms from a beach ecosystem?
[ "sand", "oxygen", "the Sun", "the ocean" ]
C
null
sciq
sciq_01_00399
Capillaries in the chorionic villi filter fetal wastes out of the blood and return clean, oxygenated blood to the fetus through what?
[ "skin vein", "Back Vein", "umbilical vein", "separates vein" ]
C
The placenta develops throughout the embryonic period and during the first several weeks of the fetal period; placentation is complete by weeks 14–16. As a fully developed organ, the placenta provides nutrition and excretion, respiration, and endocrine function (Table 28.1 and Figure 28.12). It receives blood from the ...
sciq
sciq_01_04996
What type of rain dissolves and damages stone buildings and statues?
[ "morning rain", "acid rain", "stored rain", "plastic rain" ]
B
A: Acid rain dissolves and damages stone buildings and statues. The Figure below shows a statue that has been damaged by acid rain.
openbookqa
obqa_02_00044
A person wants to buy some reusable equipment for the kitchen, so they get
[ "paper plates", "ceramic plates", "solo cups", "plastic forks" ]
B
something reusable can be used more than once
sciq
sciq_01_10739
Which part of the body of amphibians, easily absorbs substances from the environment?
[ "skin", "Eyes", "scales", "liver" ]
A
Why are so many amphibian species threatened by extinction, and why should you care? The second question is easy. Amphibians control pests, may be a source of new medicines, and help feed many other animals. The nature of amphibian skin may help explain why so many amphibian species are at risk. Their skin easily absor...
sciq
sciq_01_00726
What do red blood cells carry?
[ "oxygen", "hydrogen", "carbon dioxide", "nitrogen" ]
A
Blood is a fluid connective tissue that contains a liquid component called plasma. It also contains dissolved substances and blood cells. Red blood cells carry oxygen, white blood cells defend the body, and platelets help blood clot.
ARC-Challenge
arc_04_02493
When a car engine is started, gasoline is mixed with air and burned. Heat, sound, and chemical products are released. As the engine operates, which of these remains constant?
[ "the masses of compounds found in the engine", "the amount of heat in the engine", "the total mass of gasoline", "the total amount of energy" ]
D
null
math_qa
mathqa_03_02538
what least number should be subtracted from 642 so that the remainder when divided by 5 , 7 , and 9 will leave in each case the same remainder 4 ?
[ "5", "6", "8", "9" ]
C
"the lcm of 5 , 7 , and 9 is 315 . the next multiple is 2 * 315 = 630 . 630 + { remainder } = 630 + 4 = 634 , which is 8 less than 642 . answer : c ."
openbookqa
obqa_02_00730
How many revolutions does the moon make around the Earth during spring?
[ "one", "six", "three", "twelve" ]
C
a revolution of the moon around the Earth takes 1 month
medmcqa
medmcqa_05_04035
Anti-Mullerian hormone in female is made from:
[ "Corpus luteum", "Theca cells", "Granulosa cells", "Corona radiate" ]
C
Anti-Mullerian hormone is made from ovary specifically from granulosa cells which increases estrogen production, AMH normal value is 2 - 6 ng/ml, AMH levels are a direct marker of ovarian function and thus impoant with respect to precocious and delayed pubey, infeility and premature menopause. Mainly used in the study ...
sciq
sciq_01_08096
The heat capacity of an object depends on its chemical composition and what other property?
[ "volume", "mass", "concentrations", "weight" ]
B
If a swimming pool and wading, both full of water at the same temperature were subjected to the same input of heat energy, the wading pool would certainly rise in temperature more quickly than the swimming pool. The heat capacity of an object depends both on its mass and its chemical composition. Because of its much la...
medmcqa
medmcqa_05_00370
Tinels sign is used -
[ "To asses the severity of damage of nerve", "To classify the type of nerve injury", "To locate the site of nerve injury", "To asses the regeneration" ]
D
Ans. is 'd' i.e., To asses the regeneration Tinels sign:* Brisk percussion along the course of an injured nerve from distal to proximal direction may elicit a tingling sensation in the distal distribution of the nerve.* This is described as Tinels sign.* The point of hypersensitivity marks the site of abnormal nerve sp...
sciq
sciq_01_03125
Regardless of the mode, light is modeled as traveling in straight lines called what?
[ "electrons", "arrows", "waves", "rays" ]
D
25.1 The Ray Aspect of Light There are three ways in which light can travel from a source to another location. (See Figure 25.3. ) It can come directly from the source through empty space, such as from the Sun to Earth. Or light can travel through various media, such as air and glass, to the person. Light can also arri...
math_qa
mathqa_03_03083
if neha is 10 both sonali and priyanka is 15 both sadaf and tanu is 10 . how much is prinka by the same system ?
[ "8", "11", "10", "15" ]
C
c prinka is 10 , in a system that awards five for each vowel .
medmcqa
medmcqa_05_03211
Normal Brown colour of stool is due to
[ "Urobilin", "Stercobilinogen", "Stercobilin", "Urobilinogen" ]
C
Hemoglobin from RBC undergo metabolism and produces bilirubin and biliverdin. This, in turn, conveed into urobilinogen and stercobilinogen.This urobilin and stercobilin are responsible for giving colour to urine and stool respectively.During obstructive jaundice absence of this stercobilin leads to clay colored urine(R...
openbookqa
obqa_02_03094
What could loosen the soil by creating tunnels?
[ "candles", "spaceships", "love", "rabbits" ]
D
tunnels in soil loosen that soil
medmcqa
medmcqa_05_00497
Which of the following is a Longer acting Erythropoietin derivative?
[ "Sargramostim", "Darbepoetin alfa", "Dornase alfa", "Oprelvekin" ]
B
Darbopoietin is a Long acting EPO derivative drug. It has a T1/2 24-36 hrs. So it is given once a week. Epoietin has a half life of 6-10 hrs. Uses - Anemia of chronic renal failure(CRF) Anaemia in AIDS patients treated with Zidovudine. Cancer chemotherapy induced anaemia. Preoperative increased blood production for Aut...
medmcqa
medmcqa_05_03753
Without external cue, the sleep-wake cycle in humans
[ "Unchanged", "Continues with cycle length of > 24 hours", "Continues with cycle length of < 24 hours", "Continue with cycle length of > 12 hours" ]
B
Normal sleep-wake cycle in humans- 24 hrs When external cues (Light and darkness) removed, sleep-wake cycle- Slightly increased (>24hrs)
math_qa
mathqa_03_01350
( ( 1 ^ 5 m ) / ( 5 ^ 5 m ) ) ( ( 1 ^ 18 ) / ( 4 ^ 18 ) ) = 1 / ( 2 ( 10 ) ^ 35 ) what is m ?
[ "7", "18", "34", "35" ]
A
( ( 1 ^ 5 m ) / ( 5 ^ 5 m ) ) ( ( 1 ^ 18 ) / ( 4 ^ 18 ) ) = 1 / ( 2 ( 10 ) ^ 35 ) ( ( 1 / 5 ) ^ 5 m ) * ( ( 1 / 2 ) ^ 36 ) = 1 / ( 2 * ( 2 * 5 ) ^ 35 ) ) 2 ^ 36 will cancel out , since 1 can be written as 1 ^ 35 , so ( 1 / 5 ) ^ 5 m = ( 1 / 5 ) ^ 35 ( ( 1 / 5 ) ^ 5 m ) * ( ( 1 / 2 ) ^ 36 ) = 1 / [ ( 2 ^ 36 ) * ( 5 ^ 35...
sciq
sciq_01_06997
What is the name of the thin layer that acts as a boundary between the stratosphere and the mesosphere?
[ "spirogyra", "ozone layer", "spicule", "stratopause" ]
D
At the top of the stratosphere is a thin layer called the stratopause. It acts as a boundary between the stratosphere and the mesosphere.
sciq
sciq_01_07822
What kind of charge does a neutron have?
[ "static", "positive", "neutral", "negative" ]
C
neutrons, which are neutral in electric charge.
math_qa
mathqa_03_02772
there are 60 supermarkets in the fgh chain . all of them are either in the us or canada . if there are 22 more fgh supermarkets in the us than in canada , how many fgh supermarkets are there in the us ?
[ "20", "31", "41", "53" ]
C
"x + ( x - 22 ) = 60 - - > x = 41 . answer : c ."
sciq
sciq_01_10610
What occurs when so much water enters a stream or river that it overflows its banks or when deep snow melts very quickly in spring?
[ "flooding", "drought", "storm", "avalanche" ]
A
A flood occurs when so much water enters a stream or river that it overflows its banks. Flood waters from a river are shown in Figure below . Like this flood, many floods are caused by very heavy rains. Floods may also occur when deep snow melts quickly in the spring.
math_qa
mathqa_03_03461
the area of one square is x ^ 2 + 10 x + 25 and the area of another square is 4 x ^ 2 − 12 x + 9 . if the sum of the perimeters of both squares is 32 , what is the value of x ?
[ "0", "2", "2.5", "4.67" ]
B
"spotting the pattern of equations both are in form of ( x + c ) ^ 2 so a 1 = ( x + 5 ) ^ 2 & a 2 = ( 2 x - 3 ) ^ 2 l 1 = x + 5 & l 2 = 2 x - 3 p 1 = 4 ( x + 5 ) & p 2 = 4 ( 2 x - 3 ) p 1 + p 2 = 32 4 ( x + 5 ) + 4 ( 2 x - 3 ) = 32 . . . . . . . . . . . . . . > x = 2 answer : b"
medmcqa
medmcqa_05_02894
Maximum predisposition to tuberculosis is seen in a which pneumoconiosis -
[ "Silicosis", "Anthracosis", "Byssinosis", "Bagassosis" ]
A
Ans. is 'a' i.e., Silicosis "Silicosis is progressive and what is more important is that silicotics are prone to pulmonary tuberculosis, a condition caled silico-tuberculosis"---- Park
ARC-Easy
arc_04_00445
A light bulb manufacturer claims its light bulb is "twice as bright" per unit of electrical energy consumed as the leading light bulb. If this claim is correct, what factor must be accurately compared between the two bulbs?
[ "how much each bulb weighs", "how long each bulb lasts", "how much heat each bulb releases", "how much metal each bulb contains" ]
C
null
openbookqa
obqa_02_04654
Listeria can make you
[ "into raw meat", "tread water", "aroused", "feverish" ]
D
bacteria can cause people to become ill
ARC-Challenge
arc_04_02894
Earth makes a complete revolution around the Sun about once every
[ "day", "year", "season", "minute" ]
B
null
openbookqa
obqa_02_03888
What is most impervious to an ax?
[ "a thin branch", "a neck", "a twig", "a boulder" ]
D
as the thickness of an object increases , the resistance to damage of that object will increase
openbookqa
obqa_02_04280
Who would be healthier?
[ "a workaholic", "a heavy sleeper", "an party animal", "a night owl" ]
B
rest has a positive impact on a health
math_qa
mathqa_03_03666
the profit earned by selling an article for $ 832 is equal to the loss incurred when the same article is sold for $ 448 . what should be the sale price for making 50 % profit ?
[ "$ 480", "$ 450", "$ 960", "$ 870" ]
C
"c $ 960 let c . p . = $ x . then , 832 - x = x - 448 2 x = 1280 = > x = 640 required s . p . = 150 % of $ 640 = 150 / 100 * 640 = $ 960 ."
sciq
sciq_01_11482
What consists of structures that produce eggs and secrete female sex hormones?
[ "female neural system", "male reproductive system", "asexual reproductive system", "female reproductive system" ]
D
The female reproductive system consists of structures that produce eggs and secrete female sex hormones. They also provide a site for fertilization and enable the development and birth of a fetus. They include the vagina, uterus, ovaries, and fallopian tubes.
math_qa
mathqa_03_01206
what is the sum between the place values of three 7 ' s in the numeral 87953.0727
[ "21", "7000.0707", "7777", "7014" ]
B
"required sum = 7000 + 0.0700 + 0.0007 = 7000.0707 answer is b"
ARC-Challenge
arc_04_02833
Which relationship results in the highest level of evaporation from Earth's water reservoirs?
[ "greatest surface area and most direct sunlight", "greatest surface area and least direct sunlight", "least surface area and most direct sunlight", "least surface area and least direct sunlight" ]
A
null
sciq
sciq_01_02288
The strength of what depends on the concentration of hydrogen ions it produces when dissolved in water?
[ "acid", "the base", "electricity", "the solution" ]
A
The strength of an acid depends on the concentration of hydrogen ions it produces when dissolved in water. A stronger acid produces a greater concentration of ions than a weaker acid. For example, when hydrogen chloride is added to water, all of it breaks down into H + and Cl - ions. Therefore, it is a strong acid. On ...
medmcqa
medmcqa_05_01439
Which of the following is an automsomal dominant metabolic disorder -
[ "Cysticfibrosis", "Phenylketonuria", "a-1 antitrypsin deficiency", "Familial hyperchol estrol emi a" ]
D
Ans. is 'd' i.e., Familial hypercholesterolemia Single gene disorders (Mendelian disorders) typically follow one of the three patterns of inharitance ? Autosomal dominance Autosomal recessive C. X-linked Autosomal dominant disorders o Normally a gene pair has two alleles. o When one allele becomes abnormal due to mutat...
ARC-Easy
arc_04_01608
The orbit of Earth is almost circular and has a period of about 365 days. Compared to the orbit of Earth, which of these objects usually have highly elliptical orbits and can have periods of over 1000 years?
[ "asteroids", "meteorites", "comets", "moons" ]
C
null
medmcqa
medmcqa_05_01165
Choose the appropriate lettered structure in this radiograph of the lateral view of the head. Cerebrospinal fluid is formed by vascular choroid plexus in which structure?
[ "A", "B", "C", "D" ]
A
(a) Cerebrospinal fluid is formed by vascular choroid plexus in the ventricles in the brain; the letter "A" indicates the lateral ventricle.
ARC-Easy
arc_04_00397
Some of Earth's water is stored underground in porous rock formations known as aquifers. Which of these could use up groundwater in aquifers?
[ "abundant rain in the Ozarks", "excessive pumping from wells", "dams on the lower Mississippi", "community water conservation" ]
B
null
math_qa
mathqa_03_04381
a cheese factory sells its cheese in rectangular blocks . a normal block has a volume of 4 cubic feet . if a large block has twice the width , twice the depth , and twice the length of a normal block , what is the volume of cheese in a large block in cubic feet ?
[ "16'", "20'", "36'", "32'" ]
D
volume of cube = lbh = 4 new cube l , b , h are increases of 2 l , 2 b , 2 h new volume of cube = 2 l * 2 b * 2 h = 8 * lbh = 8 * 4 = 32 answer : d
sciq
sciq_01_02028
Starch is a large, complex carbohydrate made of thousands of _____ joined together?
[ "glucose partitions ( monomers )", "glucose orders ( monomers )", "glucose units (monomers)", "glucose divisions ( monomers )" ]
C
Starch is a large, complex carbohydrate made of thousands of glucose units (monomers) joined together. Starches are found in foods such as vegetables and grains. Starches are broken down by the body into sugars that provide energy. Breads and pasta are good sources of complex carbohydrates.
ARC-Easy
arc_04_00179
Which scientist is best known for studying plants and animals?
[ "Isaac Newton", "Albert Einstein", "Charles Darwin", "Nicolaus Copernicus" ]
C
null
sciq
sciq_01_11620
What is a measure that has both size and direction?
[ "length", "vector", "wave", "velocity" ]
B
Force is a vector, or a measure that has both size and direction. For example, Colton pushes on the ground in the opposite direction that the scooter moves, so that’s the direction of the force he is applies. He can give the scooter a strong push or a weak push. That’s the size of the force. Like other vectors, a force...
medmcqa
medmcqa_05_03171
A patient appears awake and is not talking. No voluntary movements. He can signal with vertical eye movements. The CT scan shows infarction of ventral pons. The diagnosis is
[ "Coma", "Abulia", "Locked in state", "Catatonia" ]
C
(C) Locked in state # Locked-in syndrome is a rare neuropsychological disorder.> Locked-in syndrome (LIS) is a condition in which a patient is aware but cannot move or communicate verbally due to complete paralysis of nearly all voluntary muscles in the body except for the eyes.> Its primary features are quadriplegia a...
sciq
sciq_01_09387
Isotopes have the same number of protons and electrons, but a different number of what?
[ "reactions", "impurities", "neutrons", "atoms" ]
C
Isotopes have the same number of protons and electrons, but a different number of neutrons.
sciq
sciq_01_06530
Individuals with what condition experience depigmentation that results in lighter colored patches of skin?
[ "vitiligo", "psoriasis", "eczema", "dementia" ]
A
Figure 5.10 Vitiligo Individuals with vitiligo experience depigmentation that results in lighter colored patches of skin. The condition is especially noticeable on darker skin. (credit: Klaus D. Peter).
sciq
sciq_01_04240
What are all cells surrounded by?
[ "amino acids", "cytoplasm", "cell substrate", "cell membrane" ]
D
Heat waves have increased in frequency and duration in recent years. The summer 2011 North American heat wave brought record temperatures across the Midwestern and Eastern United States. Many states and localities broke records for temperature and for the most days above 100 o F.
medmcqa
medmcqa_05_02271
Which of the following is not a ventral branch of abdominal aorta?
[ "Gonadal artery", "Celiac trunk", "Superior mesenteric artery", "Inferior mesenteric artery" ]
A
Ans. A Gonadal arteryRef: Gray's 41st ed. pg. 1047Ventral Branches of Abdominal Aorta and Level* Celiac trunk - T12 * Superior mesenteric artery - L1* Inferior mesenteric artery - L3Paired/Lateral Branches of Abdominal Aorta* Inferior phrenic artery* Middle suprarenal artery* Renal arteriesTesticular or Ovarian Artery*...
sciq
sciq_01_03279
In some plants, the sporophyte is diploid, while the gametophyte is what?
[ "gametes", "meiosis", "haploid", "humanoid" ]
C
The sporophyte produces haploid spores. The rhizoid buds to form a mature gametophyte. The zygote is housed in the venter. Figure 25.21 Which of the following statements about the fern life cycle is false? a. Sporangia produce haploid spores. The sporophyte grows from a gametophyte. The sporophyte is diploid and the ga...
ARC-Easy
arc_04_00657
When an atom has a neutral charge, which particles within the atom have equal numbers?
[ "electrons and neutrons", "protons and electrons", "neutrons and protons", "ions and neutrons" ]
B
null
sciq
sciq_01_05709
What part of the cell controls what enters and leaves?
[ "membrane", "organism", "nucleus", "protein" ]
A
Like all other living cells, prokaryotes have a cell membrane. It controls what enters and leaves the cell. It's also the site of many metabolic reactions. For example, cellular respiration takes place in the cell membrane.
sciq
sciq_01_04089
What are decomposers that feed on the organic matter left over from other decomposers?
[ "protozoa", "fungi", "saprotrophs", "algae" ]
C
Saprotrophs are decomposers that feed on any remaining organic matter that is left after other decomposers do their work. Examples of saprotrophs include fungi and protozoa.
math_qa
mathqa_03_02966
what percentage of numbers from 1 to 95 have squares that end in the digit 0 ?
[ "1", "14", "9.47", "21" ]
C
clearly , the numbers which have 1 or 9 in the unit ' s digit , have squares that end in the digit 1 . such numbers from 1 to 95 are 10 , 20,30 , 40,50 , 60,70 , 80,90 . number of such numbers = 14 . required percentage = ( 9 / 95 * 100 ) = 9.47 % answer : c
sciq
sciq_01_02906
Which highly valuable substance found in jewelry has a density of about 19 g/cm^3?
[ "gold", "diamonds", "silver", "rubies" ]
A
Samples that are the same size, but have different densities, will have different masses. Gold has a density of about 19 g/cm 3 . Pyrite has a density of only about 5 g/cm 3 . Quartz is even less dense than pyrite, and has a density of 2.7 g/cm 3 . If you picked up a piece of pyrite and a piece of quartz that were the ...
sciq
sciq_01_00152
What do ranchers fear will happen if wolves return?
[ "loss of environment", "vegetation predation", "human predation", "livestock predation" ]
D
sciq
sciq_01_09156
What type of logic can lead to important conclusions from the collecting and analyzing of observations?
[ "conductive reasoning", "primitive reasoning", "inductive reasoning", "gravitational reasoning" ]
C
sciq
sciq_01_02927
What type of earthquake has a shallow focus because the plates meet near the surface?
[ "tectonic", "transform fault", "gas giant", "divergent boundary" ]
B
Transform fault earthquakes have shallow focus because the plates meet near the surface.
medmcqa
medmcqa_05_00170
A 14 year old boy presents with chronic diarrhea. Duodenal biopsy shows villous atrophy. Anti endomysial antibodies and IgA TTG antibodies are positive. What is the treatment of choice?
[ "Gluten free diet", "Antibiotics", "Loperamide", "5-ASA" ]
A
Chronic diarrhea, villous atrophy of duodenal biopsy, anti-endomysial antibodies and IgA TTG antibodies are features of coeliac sprue. Management of coeliac sprue includes life long gluten free diet and correcting deficiencies of iron, folate and calcium. Ref: Davidson's principles and practice of Medicine, 20th Editio...
openbookqa
obqa_02_01387
Dogs reproduce differently from
[ "bears", "wolves", "cats", "earthworms" ]
D
different organisms reproduce differently
openbookqa
obqa_02_01006
A boy is lost in a heavily forested area, and the only help he has is a small compass. He knows that his house is to the south of him, but in the direction he is facing, the arrow on the compass is showing that he is currently walking due north. Therefore, the boy
[ "turns right", "turns left", "turns around", "keeps straight" ]
C
when the needle of a compass lines up with Earth 's magnetic poles , the needle points north
sciq
sciq_01_10366
Where are the taste buds located in humans?
[ "teeth", "tongue", "mouth", "lips" ]
B
The sense of taste is controlled by sensory neurons on the tongue. They are grouped in bundles called taste buds. You can see taste buds on the tongue in Figure below . Taste neurons sense chemicals in food. They can detect five different tastes: sweet, salty, sour, bitter, and umami, which is a meaty taste. When taste...
math_qa
mathqa_03_00961
45 workers work 8 hours to dig a hole 30 meters deep . how many extra workers should be hired to dig another hole 30 meters deep by working for 6 hours ?
[ "10", "15", "20", "25" ]
B
"45 workers * 8 hours / 30 meters = x * 6 / 30 x = 60 total workers 60 - 45 = 15 new workers the answer is b ."
math_qa
mathqa_03_04112
60 % of a number is added to 120 , the result is the same number . find the number ?
[ "300", "288", "270", "129" ]
A
"( 60 / 100 ) * x + 120 = x 2 x = 600 x = 300 answer : a"
sciq
sciq_01_09137
When did new plants start sprouting after the forest fire?
[ "two weeks later", "two months later", "five months later", "two days later" ]
B
Secondary Succession. Two months after a forest fire, new plants are already sprouting among the charred logs.
sciq
sciq_01_10808
What are groups of tens to hundreds of thousands of stars held tightly together by gravity called?
[ "globular clusters", "galaxy", "elongated clusters", "elliptical clusters" ]
A
Television broadcasts also use radio waves. Sounds are encoded with frequency modulation, and pictures are encoded with amplitude modulation. The encoded radio waves are broadcast from a TV tower like the one in Figure below . When the waves are received by television sets, they are decoded and changed back to sounds a...
medmcqa
medmcqa_05_02209
A pediatric patient with progressively developing degenerative neurologic disease/disorder has an elevated CSF antibody titer to measles virus. You should suspect which of the following?
[ "Acute Lyme disease", "Fifth disease", "Possible hepatitis B infection", "Possible subacute sclerosing panencephalitis (SSPE)" ]
D
SSPE is thought to be caused by a measles-related virus present in the central nervous system. Most SSPE patients show elevated measles virus antibodies in serum and CSF. In patients with MS, lower CSF antibody titers have been observed, suggesting a possible etiologic role for measles virus in MS.
sciq
sciq_01_05892
Animals that have feeding patterns that are somewhere between that of herbivores and carnivores can be called what?
[ "megavores", "insectivores", "omnivores", "nematodes" ]
C
34.1 | Digestive Systems By the end of this section, you will be able to: • Explain the processes of digestion and absorption • Compare and contrast different types of digestive systems • Explain the specialized functions of the organs involved in processing food in the body • Describe the ways in which organs work tog...
sciq
sciq_01_09929
What is precipitation that flows over the surface of the land?
[ "storm surge", "runoff", "blizzard", "seawater" ]
B
Runoff is precipitation that flows over the surface of the land. This water may travel to a river, lake, or ocean. Runoff may pick up fertilizer and other pollutants and deliver them to the water body where it ends up. In this way, runoff may pollute bodies of water.
sciq
sciq_01_07802
Amines are weak bases due to the presence of a lone pair of what on the nitrogen atom?
[ "protons", "electrons", "nuclei", "atoms" ]
B
Amines are weak bases due to the presence of a lone pair of electrons on the nitrogen atom. This lone pair can attract the hydrogen atom from a water molecule, causing the bond between it and the oxygen atom to break. The resultant products are the conjugate acid of the amine and the hydroxide ion.
medmcqa
medmcqa_05_02653
Most common complication of IUCD
[ "Bleeding", "Pain", "PID", "Aboion" ]
A
The commonest complaint of women fitted with an IUCD is increased vaginal bleeding The bleeding may be greater in volume during menstruation or a longer periods or mid cycle bleeding Reference: Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 498
medmcqa
medmcqa_05_04877
The presence of Kayser-Fleischer ring is pathognomonic of:
[ "Keratoconus", "Lowe's syndrome", "Wilson's disease", "Albinism" ]
C
Ans. Wilson's disease
sciq
sciq_01_00300
When animals get rid of their gaseous waste, what is exhaled through their mouth and nose?
[ "oxygen", "carbon dioxide", "carbon monoxide", "hydrogen" ]
B
openbookqa
obqa_02_02680
Magma piled on the Pacific bottom tho form
[ "Honolulu", "los angelos", "kansas", "texas" ]
A
an island is formed by lava cooling on the ocean floor over time
math_qa
mathqa_03_00538
positive integer y is 50 percent of 50 percent of positive integer x , and y percent of x equals 50 . what is the value of x ?
[ "50", "100", "200", "140" ]
D
"y = 50 % of 50 % 0 f x = x / 4 and y / 100 of x = 50 y / 100 * 4 y = 50 y = 35 and x = 140 answer - d"
math_qa
mathqa_03_03332
if the cost price of 12 pencils is equal to the selling price of 8 pencils , the gain percent is :
[ "30", "40", "50", "60" ]
C
c 50 % let c . p . of each pencil be $ 1 . then , c . p . of 8 pencils = $ 8 ; s . p . of 8 pencils = $ 12 . gain % = 4 / 8 * 100 = 50 %
openbookqa
obqa_02_01464
A light can be turned on if the
[ "circuit is complete", "light is unplugged", "house is destroyed", "power is out" ]
A
completing a circuit causes electricity to flow through that circuit
medmcqa
medmcqa_05_03159
In optic pathway, Ganglion cell comes under which order of neuron?
[ "1st", "2nd", "3rd", "4th" ]
B
Visual pathway Receptors- Rods & Cons First order neurons- Bipolar cell axons (In retina) Second order neurons- Ganglion cell axons ( In optic disc, optic nerve, optic chiasma, optic tracts) Third order neurons- Lateral geniculate body nerve cell axons (optic radiation)
medmcqa
medmcqa_05_01311
Endolymphatic duct connects which structure?
[ "Scala media to subdural space", "Scala vestibule to aqueduct of cochlea", "Scala tympani to aqueduct of cochlea", "Scala tympani to subdural space" ]
A
Endolymphatic duct - It is a pa of membranous labyrinth (Scala media)It is formed by union of saccule and utricleIt connects scala media to subdural spaceIts terminal pa is dilated to form the endolymphatic sacEndolymphatic sac lies between the two layers of dura on the posterior surface of petrous boneSurgical impoanc...
sciq
sciq_01_03543
What are the three types of rocks?
[ "igneous, orbital, metamorphic", "igneous, sedimentary, mixed", "igneous, sedimentary, metamorphic", "opaque , sedimentary , metamorphic" ]
C
You learned about the three rock types: igneous, sedimentary, and metamorphic. You also learned that all of these rocks can change. In fact, any rock can change to become any other type of rock. These changes usually happen very slowly. Some changes happen below Earth’s surface. Some changes happen above ground. These ...
sciq
sciq_01_02990
What are the gas giants mostly made of .
[ "hydrogen and carbon", "hydrogen and helium", "calcium and helium", "nitrogen and helium" ]
B
The gas giants are mostly made of hydrogen and helium. These are the same elements that make up most of the Sun. Astronomers think that most of the nebula was hydrogen and helium. The inner planets lost these very light gases. Their gravity was too low to keep them and they floated away into space. The Sun and the oute...
medmcqa
medmcqa_05_02691
Which one of the following local anaesthetic is highly cardiotoxic:
[ "Lignocaine", "Procaine", "Mepivacaine", "Bupivacaine" ]
D
D i.e. Bupivacaine
sciq
sciq_01_04376
What is the spread of cancer cells beyond their original site called?
[ "apoptosis", "mutations", "scattering", "metastasis" ]
D
sciq
sciq_01_00258
Many adults and some children suffer from a deficiency of lactase. these individuals are said to be lactose intolerant because they cannot digest the lactose found in what?
[ "peanuts", "fruit", "meat", "milk" ]
D
Many adults and some children suffer from a deficiency of lactase. These individuals are said to be lactose intolerant because they cannot digest the lactose found in milk. A more serious problem is the genetic disease galactosemia, which results from the absence of an enzyme needed to convert galactose to glucose. Cer...
medmcqa
medmcqa_05_02364
Saliva is
[ "Hypeonic", "Hypotonic", "Isotonic", "At first hypeonic, then isotonic" ]
B
Saliva has a pH normal range of 6.2-7.6 with 6.7 being the average pH. Resting pH of mouth does not fall below 6.3. In the oral cavity, the pH is maintained near neutrality (6.7-7.3) by saliva. The saliva contributes to maintenance of the pH by two mechanisms Ref: guyton and hall textbook of medical physiology 12 editi...
sciq
sciq_01_05305
Somatosensation refers to what of the five senses?
[ "balance", "sight", "thought", "touch" ]
D
36.2 | Somatosensation By the end of this section, you will be able to: • Describe four important mechanoreceptors in human skin • Describe the topographical distribution of somatosensory receptors between glabrous and hairy skin • Explain why the perception of pain is subjective Somatosensation is a mixed sensory cate...
ARC-Challenge
arc_04_02550
Margaret is running a full lap around a circular track. She is facing north when she starts. What direction will she be facing after she has completed half of a lap?
[ "north", "south", "east", "west" ]
B
null
sciq
sciq_01_01898
What is the term for animals that eat producers to get energy?
[ "carnivores", "herbivores", "predators", "secondary consumers" ]
B
Herbivores are animals that eat producers to get energy. For example, rabbits and deer are herbivores that eat plants. The caterpillar pictured below ( Figure below ) is a herbivore. Animals that eat phytoplankton in aquatic environments are also herbivores.
sciq
sciq_01_10036
What is defined as anything that takes up space and has mass?
[ "elements", "atoms", "matter", "electrons" ]
C
medmcqa
medmcqa_05_01222
Renal trauma is best treated by -
[ "Observation and suppoive measures", "Early drainage of perirenal haematoma", "Heminephrectomy", "Nephrostomy" ]
A
Ans. is 'a' i.e., Observation and suppoive measures
ARC-Easy
arc_04_00827
In order for a glider to fly, its weight must be opposed by
[ "lift.", "drag.", "gravity.", "friction." ]
A
null
sciq
sciq_01_08548
What collect data on the land and sea in regards to the weather?
[ "wind stations", "turbine stations", "thermal stations", "weather stations" ]
D
Weather stations collect data on land and sea. Weather balloons, satellites, and radar collect data in the atmosphere.
sciq
sciq_01_07271
What are the two basic types of combustion engines?
[ "spark and steam", "gas and steam", "diesel and internal combustion", "external and internal combustion engines" ]
D
A combustion engine is a complex machine that burns fuel to produce thermal energy and then uses the energy to do work. Two basic types of combustion engines are external and internal combustion engines.
math_qa
mathqa_03_01785
the sum of three consecutive numbers is 87 . the greatest among these three number is :
[ "26", "28", "29", "30" ]
D
"let the numbers be x , x + 1 and x + 2 then , x + ( x + 1 ) + ( x + 2 ) = 87 3 x = 84 x = 28 greatest number , ( x + 2 ) = 30 . answer : d"