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medmcqa
medmcqa_05_01884
ECG of a patient with snake bite is shown below. What is the abnormality seen?
[ "Hyperkalemia", "Hypokalemia", "Myocarditis", "Bigemini" ]
A
ECG changes typically occur when serum potassium is < 3 mEq/L, and include ST segment sagging, T wave depression, and U wave elevation. With marked hypokalemia, the T wave becomes progressively smaller and the U wave becomes increasingly larger . Ref Davidson 23rd edition pg 370
openbookqa
obqa_02_03934
A creature that completely goes unnoticed and unseen against a mottled leaf backdrop is probably
[ "indoors", "glowing", "neon", "matching" ]
D
camouflage is a kind of protection against predators
openbookqa
obqa_02_04130
John's dog seemed to be getting chubby. He concluded that
[ "the dog was sleepwalking.", "the dog was getting more exercise", "the dog was overindulging in meals and snacks", "the dog was refusing to eat" ]
C
as the amount of food an animal eats increases , the weight of that animal will increase
math_qa
mathqa_03_02244
a train of 24 carriages , each of 60 meters length , when an engine also of 60 meters length is running at a speed of 60 kmph . in what time will the train cross a bridge 1.5 km long ?
[ "6", "3", "4", "9" ]
B
"d = 25 * 60 + 1500 = 3000 m t = 3000 / 60 * 18 / 5 = 180 sec = 3 mins answer : b"
math_qa
mathqa_03_04207
if 2994 ã · 14.5 = 171 , then 29.94 ã · 1.45 = ?
[ "17.1", "17.3", "17.5", "17.7" ]
A
"29.94 / 1.45 = 299.4 / 14.5 = ( 2994 / 14.5 ) x 1 / 10 ) [ here , substitute 171 in the place of 2994 / 14.5 ] = 171 / 10 = 17.1 answer is a ."
openbookqa
obqa_02_02617
It is much harder to go star gazing in the city as opposed to the mountains due to the amount of factories doing what to the air
[ "dirtying it", "air horns", "candy", "tables" ]
A
as light pollution increases , seeing the stars will be harder
openbookqa
obqa_02_03495
If a person looks at the night sky in February and then again in June, the stars will be
[ "unchanged", "gone", "unmoved", "differently placed" ]
D
the Earth revolving around the sun causes stars to appear in different areas in the sky at different times of year
sciq
sciq_01_02916
What is the term for a structure within the cytoplasm that performs a specific job in the cell?
[ "molecule", "vacuole", "nucleolus", "organelle" ]
D
Eukaryotic cells also contain other organelles besides the nucleus. An organelle is a structure within the cytoplasm that performs a specific job in the cell. Organelles called mitochondria, for example, provide energy to the cell, and organelles called vacuoles store substances in the cell. Organelles allow eukaryotic...
math_qa
mathqa_03_03967
the average of 6 observations is 13 . a new observation is included and the new average is decreased by 1 . the seventh observation is ?
[ "1", "3", "5", "6" ]
D
let seventh observation = x . then , according to the question we have = > ( 78 + x ) / 7 = 12 = > x = 6 . hence , the seventh observation is 6 . answer : d
sciq
sciq_01_07081
Hotspots can be used to tell the speed and direction that what object is moving?
[ "glaciers", "plates", "crystals", "electrons" ]
B
Hotspots can be used to tell the speed and direction that a plate is moving.
openbookqa
obqa_02_03868
deep sea animals live way down in the
[ "volcanoes", "wet abyss", "sky", "mount everest" ]
B
deep sea animals live deep in the ocean
medmcqa
medmcqa_05_02596
The gene involved in Rett&;s syndrome is ______
[ "P53", "Rb", "MeCP2", "FGFR3" ]
C
The gene involved in Rett&;s syndrome is MeCP2 gene located in X chromosome (Xq28 predominantly of paternal origin) Rett&;s Syndrome: Almost always affects girls (X-linked dominant) Development may proceed normally until 1 year of age After 1 year of age, rapid progressionn in language and hand skills, motor milestones...
medmcqa
medmcqa_05_01501
Sunflower cataract is seen in:
[ "Blunt trauma", "Diabetes", "Chalcosis", "Argyriosis" ]
C
Ans: C (Chalcosis) Ref Parson's Diseases of the Eye 22nd edition pg.25H 259Explanation:CauseType of cataractDiabetesSnow flake cataractMyotonic dystrophyChristmas tree cataractGalactosemiaOil droplet cataractAlport syndromeAnterior polar cataractAtopic dermatitisShield cataractTraumatic cataractRosette cataractComplica...
openbookqa
obqa_02_03993
A circuit is parallel when more than one pathway has flowing what?
[ "ideas", "stocks", "water", "zapping energy" ]
D
if electricity flows along more than one pathway then the circuit is parallel
medmcqa
medmcqa_05_01563
The most important cytokine for the synthesis and deposition of connective tissue proteins is
[ "PDGF", "FGF-2", "TGF-β", "MMP" ]
C
The laying down of connective tissue occurs in two steps:  Migration and proliferation of fibroblasts into the site of injury. Deposition of ECM proteins produced by these cells.  These processes are orchestrated by locally produced cytokines and growth factors, including PDGF, FGF-2 and TGF-β. TGF-β is the most impo...
math_qa
mathqa_03_00058
machine m , n , o working simultaneously machine m can produce x units in 3 / 4 of the time it takes machine n to produce the same amount of units . machine n can produce x units in 2 / 7 the time it takes machine o to produce that amount of units . if all 3 machines are working simultaneously , what fraction of the to...
[ "1 / 2", "7 / 13", "4 / 13", "8 / 29" ]
B
now ultimately the speed of every machine is given with respect to mach o . so lets assume the speed of o , say 12 hrs to make x units ( assuming 6 because we can see we will need to divide by 3 and 4 mach o makes x units in 12 hrs so , mach n = 2 / 7 of o = 2 / 7 * 12 = 24 / 7 hrs to make x units and mach m = 3 / 4 of...
ARC-Easy
arc_04_01743
To use energy from the Sun to power household appliances, the solar energy must be converted to
[ "heat energy.", "light energy.", "nuclear energy.", "electrical energy." ]
D
null
medmcqa
medmcqa_05_03515
Which of the following is not a recommended sanitation measure for swimming pool sanitation?
[ "Recommended area per swimmer = 2.2 per sq. meter", "water to be refiltered in less than 6 hours (rapid sand filters)", "Residual level of free chlorine to be >0.5ppm", "15% water to be replaced by fresh water every day" ]
C
SANITATION MEASURES FOR SWIMMING POOL SANITATION: Recommended area: Recommended area is = 2.2 sq.meter (24 sq.ft) per swimmer Surveillance: Rules and regulation to be posted in appropriate place Filtration of water: Water to be refiltered in less than 6 hours (rapid sand filters); 15% water to be replaced by fresh wate...
sciq
sciq_01_00554
What is the name of film that polyester fibers form?
[ "mylar", "layers", "Softness", "fabric" ]
A
Polyester molecules make excellent fibers and are used in many fabrics. A knitted polyester tube, which is biologically inert, can be used in surgery to repair or replace diseased sections of blood vessels. PET is used to make bottles for soda pop and other beverages. It is also formed into films called Mylar. When mag...
sciq
sciq_01_08115
Cytokinesis divides what part of the cell into two distinctive cells?
[ "cell wall", "cytoplasm", "nucleus", "DNA" ]
B
The Cell Cycle One “turn” or cycle of the cell cycle consists of two general phases: interphase, followed by mitosis and cytokinesis. Interphase is the period of the cell cycle during which the cell is not dividing. The majority of cells are in interphase most of the time. Mitosis is the division of genetic material, d...
math_qa
mathqa_03_03000
tom purchased 8 kg of apples at the rate of 70 per kg and 910 kg of mangoes at the rate of 55 per kg . how much amount did he pay to the shopkeeper ?
[ "a", "b", "c", "d" ]
A
"cost of 8 kg apples = 70 × 8 = 560 . cost of 10 kg of mangoes = 55 × 10 = 550 . total cost he has to pay = 560 + 550 = 1110 . a )"
openbookqa
obqa_02_04777
A caterpillar is a part one of the mundane four stage life cycle of
[ "a machine", "a company", "an engine", "a colorful invertebrate" ]
D
metamorphosis is when an animal changes from an immature form to an adult form
math_qa
mathqa_03_04123
9 people decided to split the restaurant bill evenly . if the bill was $ 514.16 dollars , how much money did they 1 cent is the smallest unit ?
[ "$ 514.16", "$ 514.17", "$ 514.18", "$ 514.19" ]
B
"this is equivalent to finding the first number that is divisible by 9 that occurs after 51416 . in order to divide the sum in 9 parts , the amount must be divisible by 9 divisibility rule of 9 : the sum of the digits must be divisible by 9 sum of digits of 51416 = 17 and 18 is divisible by 9 . hence , we need to add 1...
math_qa
mathqa_03_02747
there were two candidates in an election . winner candidate received 70 % of votes and won the election by 280 votes . find the number of votes casted to the winning candidate ?
[ "228", "744", "490", "199" ]
C
"w = 70 % l = 30 % 70 % - 30 % = 40 % 40 % - - - - - - - - 280 70 % - - - - - - - - ? = > 280 / 40 * 70 = 490 answer : c"
sciq
sciq_01_08543
What cannot be created or destroyed in a chemical reaction?
[ "energy", "mass", "matter", "heat" ]
C
Law stating that matter cannot be created or destroyed in chemical reactions.
medmcqa
medmcqa_05_02563
Which of the following is NOT a component of reduced osmolarity ORS?
[ "Citrate", "Potassium", "Glucose", "Zinc" ]
D
Composition of reduced osmolarity ORS: Components Amount in mmol/ litre Sodium 75 Chloride 65 Glucose, anhydrous 75 Potassium 20 Citrate 10 Total osmolarity 245 Ref: Park 21st edition, page 202.
medmcqa
medmcqa_05_00973
Pathognomic sign of traumatic fracture is
[ "Tenderness", "Swelling", "Crepitus", "Bruising" ]
C
C. i.e. (Crepitus) (545 - Apley 8th)* Crepitus or abnormal movement is pathognomic to traumatic fracture.* Posterior - interosseous nerve invovemet in Monteggia fracture dislocation* Peroneal nerve involvement in knee dislocationMotor cyclists fractures - The motorcyclists sustains a ring fracture and the pillion rider...
openbookqa
obqa_02_03496
In December, someone in England probably wants to
[ "Wear shorts and enjoy the warmth", "Wear heavy clothing when outdoors", "Go down to the beach in swimwear", "Start planting seeds in their garden" ]
B
December is during the winter in the northern hemisphere
ARC-Easy
arc_04_01399
What statement describes what happens to the carbon dioxide waste produced by a developing baby during pregnancy?
[ "It is carried by the umbilical cord to the placenta and then to the mother's blood.", "It is released from the fetus by its breathing and then is absorbed by the placenta.", "It is released through the fetal urine and then exits through the umbilical cord.", "It is carried through shared blood vessels and th...
A
null
sciq
sciq_01_03051
What does the ovule develop into after fertilization?
[ "pollen", "seed", "germ", "zygote" ]
B
An ovule is a female reproductive structure in seed plants. It contains a tiny female gametophyte. The gametophyte produces an egg cell. After the egg is fertilized by sperm, the ovule develops into a seed.
openbookqa
obqa_02_02488
With proper nutrition, which activity would increase the body's strength?
[ "breathing", "weighted dips", "sleeping", "eating" ]
B
exercise has a positive impact on a body 's strength
openbookqa
obqa_02_04244
The arctic environment mostly reflects all colors from the closest star because
[ "it's covered in prisms", "it's covered in white precipitation", "it's always raining there", "the ground is completely covered with white animals" ]
B
the arctic environment is white in color from being covered in snow
openbookqa
obqa_02_00849
What is an example of hunting?
[ "Cats eating cat food", "sea otter cracking open clams with a rock", "Humans going to restaurants", "A dog eating dog food" ]
B
An example of hunting is an otter cracking open clams with a rock
math_qa
mathqa_03_01738
a pharmaceutical company received $ 4 million in royalties on the first $ 50 million in sales of and then $ 12 million in royalties on the next $ 170 million in sales . by approximately what percentage did the ratio of royalties to sales decrease from the first $ 50 million in sales to the next $ 170 million in sales ?
[ "12 %", "15 %", "45 %", "52 %" ]
A
"( 12 / 170 ) / ( 4 / 50 ) = 15 / 17 = 88 % it means that 12 / 170 represents only 88 % . therefore a decrease of 12 % . answer a"
sciq
sciq_01_09475
What is said about the speed of rotation in systems that create tornadoes?
[ "it is fast", "it is magnetic", "it is slow", "it is unchanged" ]
C
There are several other examples of objects that increase their rate of spin because something reduced their moment of inertia. Tornadoes are one example. Storm systems that create tornadoes are slowly rotating. When the radius of rotation narrows, even in a local region, angular velocity increases, sometimes to the fu...
math_qa
mathqa_03_00669
a sum of money is to be distributed among a , b , c , d in the proportion of 5 : 2 : 4 : 3 . if c gets $ 500 more than d , what is b ' s share ?
[ "$ 500", "$ 1000", "$ 1500", "$ 2000" ]
B
"let the shares of a , b , c and d be 5 x , 2 x , 4 x and 3 x respectively . then , 4 x - 3 x = 500 x = $ 500 b ' s share = 2 x = 2 * $ 500 = $ 1000 the answer is b ."
medmcqa
medmcqa_05_02020
Pseudomyxoma peritonie is seen with -
[ "Thecoma ovary", "Mucin secreting ovarian carcinoma", "Carcinoid appendix", "Mesothelioma" ]
B
Pseudomyxoma peritonei (PMP) is a clinical condition caused by cancerous cells (mucinous adenocarcinoma) that produce abundant mucin or gelatinous ascites.The tumors cause fibrosis of tissues and impede digestion or organ function, and if left untreated, the tumors and mucin they produce will fill the abdominal cavity....
sciq
sciq_01_06899
Almost all energy at earth's surface comes from where?
[ "the sun", "oceans", "wind", "another sun" ]
A
Almost all energy at Earth's surface comes from the Sun. The Sun’s energy heats the planet and the air around it. This causes the atmosphere to move and create weather. Sunlight also powers photosynthesis and life on Earth.
openbookqa
obqa_02_01629
Compared to an area with farmland, an area with housing developments has more
[ "crops", "wilderness", "light pollution", "animals" ]
C
as distance to a city decreases , the amount of light pollution will increase
ARC-Easy
arc_04_01586
For many years, people have been curious about the stars. In the past, people have shared what they knew about the stars through stories and drawings. Which pair of tools would be most helpful for people today to gather and share information about stars?
[ "a notebook and a calculator", "a telescope and a computer", "a calculator and a microscope", "a microscope and a telescope" ]
B
null
medmcqa
medmcqa_05_01027
Bouquet of Flowers appearance is seen in?
[ "ADPKD", "ARPKD", "Horse Shoe Kidney", "Medullary sponge kidney" ]
D
Medullary sponge kidney: Shows Bouquet of Flowers appearance in IVP Autosomal dominant polycystic kidney disease Swiss cheese appearance on nephrogram Spider leg appearance on pyelogram Autosomal recessive polycystic kidney disease Shows striated nephrogram
sciq
sciq_01_10469
What term in physics refers to the use of force to move an object?
[ "mass", "work", "momentum", "velocity" ]
B
Work is defined differently in physics than in everyday language. In physics, work means the use of force to move an object. The teen who is playing tennis in Figure above is using force to move her tennis racket, so she is doing work. The teen who is studying isn’t moving anything, so she is not doing work.
openbookqa
obqa_02_01399
The circulatory system brings oxygen to the body from where?
[ "brain", "chest", "hands", "stomach" ]
B
the circulatory system carries oxygen from the digestive and respiratory systems to the rest of the body
math_qa
mathqa_03_03158
when positive integer n is divided by 3 , the remainder is 1 . when n is divided by 5 , the remainder is 3 . what is the smallest positive integer k such that k + n is a multiple of 15 ?
[ "2", "4", "6", "8" ]
A
"n = 3 p + 1 = 5 q + 3 n + 2 = 3 p + 3 = 5 q + 5 n + 2 is a multiple of 3 and 5 , so it is a multiple of 15 . the answer is a ."
openbookqa
obqa_02_01656
If two objects have the same charge then what will they do to eachother?
[ "repel attackers", "approach", "pull", "push away" ]
D
if two objects have the same charge then those two materials will repel each other
sciq
sciq_01_04551
What component of cells is present in plant and bacterial cells but not animal cells?
[ "plasma", "cell wall", "mitochondria", "nucleus" ]
B
Animal Cell. The shape of an animal cell is not constrained by a rigid cell wall. A bacterial cell is shown above for comparison.
sciq
sciq_01_04327
Oxygenated blood is transported by what system?
[ "circulatory", "nervous", "skeletal", "pulmonary" ]
A
Oxygenated blood is transported by the circulatory system from lungs to tissues throughout the body.
math_qa
mathqa_03_00307
a train covers a distance of 90 km in 20 min . if it takes 9 sec to pass a telegraph post , then the length of the train is ?
[ "675", "680", "685", "690" ]
A
"speed = ( 90 / 20 * 60 ) km / hr = ( 270 * 5 / 18 ) m / sec = 75 m / sec . length of the train = 75 * 9 = 675 m . answer : option a"
openbookqa
obqa_02_02108
Lava on the ocean floor may build up upon itself. This is where
[ "birds may be thinking", "lone land mass develops", "musical notes are heard", "fish are buried in sand" ]
B
an island is formed by lava being released on the ocean floor over time
sciq
sciq_01_03008
What system can be used by scientists to express very small numbers?
[ "scientific notation", "similar notation", "certain diffusion", "scientific diffusion" ]
A
Very small numbers can also be expressed using scientific notation. The mass of an electron in decimal notation is 0.000000000000000000000000000911 grams. In scientific notation, the mass is expressed as 9.11 × 10 -28 g. Notice that the value of the exponent is chosen so that the coefficient is between 1 and 10.
ARC-Easy
arc_04_01932
Which mechanism helps carbon to cycle from the atmosphere to living organisms?
[ "tissue decomposition", "cellular respiration", "photosynthesis", "transpiration" ]
C
null
sciq
sciq_01_06256
Misconceptions about what theory contribute to the controversy that still surrounds this fundamental principle of biology?
[ "darwin on evolution", "cycle of evolution", "brain of evolution", "theory of evolution" ]
D
Today, evolution is still questioned by some people. Often, people who disagree with the theory of evolution do not really understand it. For example, some people think that the theory of evolution explains how life on Earth first began. In fact, the theory explains only how life changed after it first appeared. Some p...
sciq
sciq_01_00141
The binding of what helps eliminate antigens by phagocytosis and complement-mediated lysis
[ "antibodies", "amino acids", "fats", "proteins" ]
A
sciq
sciq_01_05917
The needle of a compass is made of what element?
[ "aluminum", "nickel", "iron", "tin" ]
C
Calsidyrose. The needle of a compass is made of the element iron . CC BY 2.0.
openbookqa
obqa_02_02433
Two cats in different rooms may share information by
[ "vocalizing", "sleeping", "thinking", "waiting" ]
A
sound can be used for communication by animals
medmcqa
medmcqa_05_02048
Which of the following is the mechanism of action of Fondaparinux?
[ "Factor Xa inhibition and Thrombin inhibition", "Factor Xa inhibition", "Antithrombin inhibitor", "Thrombin inhibition" ]
B
The antithrombotic activity of fondaparinux sodium is the result of antithrombin III (ATIII) mediated selective inhibition of Factor Xa.
ARC-Easy
arc_04_00671
Humans depend on which natural resource from the environment?
[ "water", "houses", "electricity", "roads" ]
A
null
sciq
sciq_01_07742
The release of an egg from an ovary, is part of what cycle?
[ "fetal", "stomach", "menstrual", "life" ]
C
Ovulation , the release of an egg from an ovary, is part of the menstrual cycle , which typically occurs each month in a sexually mature female unless she is pregnant. Another part of the cycle is the monthly period, or menstruation. Menstruation is the process in which the endometrium of the uterus is shed from the bo...
sciq
sciq_01_08400
Potassium, calcium, and magnesium are considered what kind of nutrients?
[ "macronutrients", "major nutrients", "minor nutrients", "micronutrients" ]
A
openbookqa
obqa_02_04145
What requires nutrients to grow?
[ "birds", "metals", "computers", "dirt" ]
A
a skinny beak is used for obtaining food by a bird from small spaces
openbookqa
obqa_02_04005
If a human has all their bones removed
[ "they are dancing", "they can stand", "organs are safe", "organs will fail" ]
D
the skeletal system protects internal organs
sciq
sciq_01_10723
What structures include the vagina, uterus, ovaries, and fallopian tubes?
[ "reproductive", "digestion", "respiration", "skeletal" ]
A
Female reproductive structures include the vagina, uterus, ovaries, and fallopian tubes.
sciq
sciq_01_11040
Which veins return oxygen-rich blood from the lungs to the heart?
[ "respiratory", "jugular", "varicose", "pulmonary" ]
D
Today in many countries, death rates have gone down but birth rates remain high. This means that the population is growing. Figure below shows the growth rates of human populations all over the world.
math_qa
mathqa_03_03221
a factory produces 1 defective bulb out of 10 bulbs a yr . if it produces 870 bulbs a yr , how many defective bulbs are produced ?
[ "84", "85", "86", "87" ]
D
10 out of 1 is defective 20 out of 2 is defective 100 out of 10 is defective and so on 800 out of 80 is defective 70 out of 7 is defective 80 + 7 = 87 answer : d
openbookqa
obqa_02_01807
Which eats dead organisms?
[ "Canadian nightcrawlers", "clouds", "satellites", "robots" ]
A
decomposition is when a decomposer recycles nutrients from dead organisms to the soil by eating those dead organisms
math_qa
mathqa_03_04789
find the greatest number that exactly divides 35 , 91 and 840 ?
[ "5", "6", "7", "8" ]
C
"the greatest number that exactly divides 35 , 91 and 840 is the hcf of the three numbers . so , calculating hcf we get the answer 7 . answer : c"
openbookqa
obqa_02_01332
As the amount of water a plant receives increases what will usually happen with it?
[ "diminish", "shrinking", "grow metal", "expanded proportions" ]
D
as the amount of water received by a plant increases , that plant will usually grow
math_qa
mathqa_03_02076
a man rows his boat 95 km downstream and 60 km upstream , taking 2 hours each time . find the speed of the stream ?
[ "76 kmph", "6 kmph", "9 kmph", "8 kmph" ]
C
"speed downstream = d / t = 95 / ( 2 ) = 48 kmph speed upstream = d / t = 60 / ( 2 ) = 30 kmph the speed of the stream = ( 48 - 30 ) / 2 = 9 kmph answer : c"
openbookqa
obqa_02_03017
Which would likely spread the fastest?
[ "exhaust from a car", "windshield fluid from a car", "metal from a car", "water from a car" ]
A
when a gas in an open container evaporates, that gas spreads out into the air
math_qa
mathqa_03_02341
the monthly incomes of a and b are in the ratio 5 : 2 . b ' s monthly income is 12 % more than c ' s monthly income . if c ' s monthly income is rs . 14000 , then find the annual income of a ?
[ "rs . 420000", "rs . 180000", "rs . 201600", "rs . 470400" ]
D
"b ' s monthly income = 14000 * 112 / 100 = rs . 15680 b ' s monthly income = 2 parts - - - - > rs . 15680 a ' s monthly income = 5 parts = 5 / 2 * 15680 = rs . 39200 a ' s annual income = rs . 39200 * 12 = rs . 470400 answer : d"
sciq
sciq_01_02729
What is the way animals act either alone or with other animals called?
[ "animal lifestyle", "animal point", "animal behavior", "animal way" ]
C
Barking, purring, and playing are just some of the ways in which dogs and cats behave. These are examples of animal behaviors. Animal behavior is any way that animals act, either alone or with other animals.
math_qa
mathqa_03_03288
a person was asked to state his age in years . his reply was , ` ` take my age 3 years hence , multiply it by 4 and subtract 4 times my age 3 years ago and you will know how old i am . ' ' what was the age of the person ?
[ "18", "92", "27", "24" ]
D
explanation : let the present age of person be x years . then , 4 ( x + 3 ) - 4 ( x - 3 ) = x < = > ( 4 x + 12 ) - ( 4 x - 12 ) = x < = > x = 24 . . answer : d
openbookqa
obqa_02_02650
Which is least likely to have a constant volume?
[ "ice", "play doh", "food", "car exhaust" ]
D
Matter in the gas phase has variable volume
medmcqa
medmcqa_05_01469
Predisposing factors of Ca esophagus
[ "Tylosis", "Achalasia", "Barret's esophagus", "Hiatus hernia" ]
A
PREDISPOSING FACTORS OF SCC- 1.SEX -4 TIMES MORE IN MALE 2.ETHINICITY-AFRICAN AMERICANS, CENTRAL ASIA, MIDDLE EAST 3.ALCOHOLISM AND TOBACCO CHEWING 4.INTRINSIC DEFECTS-PLUMMER VINSON SYNDROME, ACHALASIA 5.HEREDITARY CANCER SYNDROME - TYLOSIS, FANCONI ANEMIA 6.HPV 7.H/O CAUSTIC INGESTION ADENO CARCINOMA 1.SEX -MALE 2.ET...
sciq
sciq_01_02274
What type of habitat do ferns need to grow?
[ "elevated", "dry", "cold", "moist" ]
D
Ferns 11,000 They have large leaves in fronds. They have stiff stems, so they are tall growing; some are trees. They reproduce with spores. They need a moist habitat.
math_qa
mathqa_03_04051
pipe a can fill a tank in 10 hrs and pipe b can fill it in 8 hrs . if both the pipes are opened in the empty tank . there is an outlet pipe in 3 / 4 th of the tank . in how many hours will it be fill 3 / 4 th of that tank ?
[ "3 hr", "3.10 hr", "3.15 hr", "3.20 hr" ]
D
part filled a in 1 hr = ( 1 / 10 ) part filled b in 1 hr = ( 1 / 8 ) part filled by ( a + b ) together in 1 hr = ( 1 / 10 ) + ( 1 / 8 ) = 18 / 80 so , the tank will be full in 80 / 18 hrs . time taken to fill exact 3 / 4 th of the tank = ( 80 / 18 ) * ( 3 / 4 ) = 3.20 hrs answer : d
sciq
sciq_01_00235
Something that has all of the characteristics of life is considered to be what?
[ "ecosystem", "organism", "molecule", "alive" ]
D
There is not just one distinguishing feature that separates a living thing from a non-living thing. A cat moves but so does a car. A tree grows bigger, but so does a cloud. A cell has structure, but so does a crystal. Biologists define life by listing characteristics that living things share. Something that has all of ...
openbookqa
obqa_02_01565
A flashlight converts chemical energy into what kind of energy?
[ "light snacks", "greens", "food", "illumination" ]
D
a flashlight converts chemical energy into light energy
math_qa
mathqa_03_01425
a factory has three types of machines , each of which works at its own constant rate . if 7 machine as and 11 machine bs can produce 470 widgets per hour , and if 8 machine as and 22 machine cs can produce 600 widgets per hour , how many widgets could one machine a , one machine b , and one machine c produce in one 8 -...
[ "400", "475", "550", "560" ]
D
"let machine a produce a widgets per hour . b produce b widgets per hour and c produce c widgets per hour . 7 a + 11 b = 470 - - - ( 1 ) 8 a + 22 c = 600 - - - ( 2 ) dividing ( 2 ) by 2 4 a + 11 c = 300 . . . . . ( 3 ) adding ( 1 ) ( 3 ) 11 a + 11 b + 11 c = 770 a + b + c = 70 per hour so for eight hrs = 70 * 8 = 560 =...
openbookqa
obqa_02_01321
Which weight has the most resistance when being picked up?
[ "3 pound purple weight", "2 pound pink weight", "5 pound green weight", "8 pound blue weight" ]
D
as the resistance to something increases , how easilty that something can be done will decrease
ARC-Challenge
arc_04_02476
Students study human body structure to learn how the body functions. Which life-size model would best represent the size, shape, and location of human internal organs?
[ "a two-dimensional upper body diagram with magnetic stickers of the organs", "a three-dimensional plastic upper body with removable parts", "a two-dimensional detailed wall poster", "a three-dimensional paper body" ]
B
null
sciq
sciq_01_01597
What is the smallest planet in our solar system?
[ "Jupiter", "Earth", "mercury", "Mars" ]
C
Mercury is the smallest planet and the closest to the Sun. It has an extremely thin atmosphere so surface temperatures range from very hot to very cold. Like the Moon, it is covered with craters.
ARC-Easy
arc_04_01777
Joel made some measurements and recorded this data: Sample 1 - 45 mL Sample 2 - 15 mL Sample 3 - 30 mL Sample 4 - 20 mL Which of these tools would most likely have been used to obtain these measurements?
[ "test tube", "meter stick", "spring scale", "graduated cylinder" ]
D
null
sciq
sciq_01_03883
Where are more of an insect's internal organs kept?
[ "the head", "the thorax", "the chest cavity", "the abdomen" ]
D
An insect’s abdomen contains most of the internal organs. Like other arthropods, insects have a complete digestive system. They also have an open circulatory system and central nervous system. Like other terrestrial arthropods, they have trachea for breathing air and Malphigian tubules for excretion.
medmcqa
medmcqa_05_03424
Which of the following is NOT associated with stabbing injury:
[ "Point wound", "Puncture wound", "Perforation", "Chopping" ]
D
Ans. (d) ChoppingRef: The essentials of FSM by KS Narayan Reddy 31st ed. /182-83* Stab wound is produced when force is delivered along long axis of narrow or a pointed object, such as knife, dagger, sword, chisel, screw driver etc into the depth of the body.* It can present as point wound, puncture wound or perforation...
sciq
sciq_01_00101
What protects a developing flower while it is still a bud?
[ "petals", "lobes", "shell", "sepals" ]
D
Sepals protect the developing flower while it is still a bud. Sepals are usually green, which camouflages the bud from possible consumers.
sciq
sciq_01_08514
People with type o blood are often called what?
[ "flexible donors", "likely donors", "complete donors", "universal donors" ]
D
Recall that people with type O blood do not have any antigens on their RBCs. As a result, type O blood can be given to people with blood types A, B, or AB. If there are no antigens on the RBCs, there cannot be an antibody reaction in the blood. People with type O blood are often called universal donors .
sciq
sciq_01_07063
What term means a reproductive cell, like the human egg in females?
[ "zygote", "gamete", "embryo", "sperm" ]
B
This represents a human egg, which is the gamete, or reproductive cell, in females. Notice that is does not have a distinct shape, like a sperm cell has. The egg is a round cell with a haploid nucleus in the center. The egg contains most of the cytoplasm and organelles present in the first cell of a new organism.
sciq
sciq_01_10056
What do you call a mixture of two or more substances in which dissolved particles are distributed evenly throughout?
[ "solution", "concentrate", "water", "liquid" ]
A
A solution is a mixture of two or more substances in which dissolved particles are distributed evenly throughout the solution. The substance that dissolves in a solution is called the solute, and the substance that does the dissolving is called the solvent. The concentration of a solution is the amount of solute in a g...
math_qa
mathqa_03_00324
the ratio between the number of sheep and the number of horses at the stewart farm is 3 to 7 , if each horse is fed 230 ounces of horse food per day and the farm needs a total 12,880 ounces of horse food per day , what is the number of sheep in the farm ?
[ "24", "28", "32", "56" ]
A
let the number of sheeps and horses be 3 x and 7 x . now total number of horses = total consumption of horse food / consumption per horse = 12880 / 230 = 56 , which is equal to 7 x . = > x = 8 sheeps = 3 x = 3 * 8 = 24 . hence a
sciq
sciq_01_00028
What is defined as a change in the inherited traits of organisms over time?
[ "variation", "evolution", "generation", "divergence" ]
B
One idea is that evolution happens. Evolution is a change in the inherited traits of organisms over time. Living things have changed as descendants diverged from common ancestors in the past.
medmcqa
medmcqa_05_01555
First antibody to appear in blood in Acute Hepatitis B is:
[ "IgM anti-HBc", "Anti HBs", "Anti HBe", "IgG anti HBc" ]
A
IgM anti-HBc
medmcqa
medmcqa_05_00418
Which is not a feature of posterior urethral valve:
[ "Palpable bladder", "Painful stress incontinence", "Recurrent UTI", "Hydronephrosis" ]
B
b. Painful stress incontinence(Ref: Nelson's 20/e p 2562-2567, 2573, Ghai 8/e p 485-486)High Yield Points:Posterior urethral valves are the commonest cause of lower urinary tract obstruction in boys.In PUV, Prostatic urethra dilates, & bladder muscle undergoes hypertrophy; Hydronephrosis or renal dysplasia may also dev...
openbookqa
obqa_02_01419
A bicycle may be used for
[ "rain", "cats", "coffee grinding", "elephants" ]
C
a bicycle contains screws
medmcqa
medmcqa_05_04645
Serious complication of prolonged sitting posture
[ "Dysanythmia", "Hypotension", "Nerve paralysis", "Venous embolism" ]
D
There is mounting evidence that prolonged cramped sitting in connection with long lasting air travel increases risk to DVT of the leg which prolongs to pulmonary embolism Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:236,237
math_qa
mathqa_03_03797
a train passes a station platform in 36 sec and a man standing on the platform in 20 sec . if the speed of the train is 36 km / hr . what is the length of the platform ?
[ "160", "240", "288", "277" ]
A
"speed = 36 * 5 / 18 = 10 m / sec . length of the train = 10 * 20 = 200 m . let the length of the platform be x m . then , ( x + 200 ) / 36 = 10 = > x = 160 m . answer : a"
math_qa
mathqa_03_02224
the product of a and b is equal to 11 more than twice the sum of a and b . if b = 7 , what is the value of b - a ?
[ "2", "5", "7", "24" ]
A
"given : ab = 2 ( a + b ) + 11 and b = 7 hence 7 a = 2 a + 14 + 11 5 a = 25 , a = 5 ( a potential trap . do not get excited here . we need to find b - a , not a ) b - a = 7 - 5 = 2 correct option : a"
sciq
sciq_01_10935
Both pathways that isolate a population reproductively in some form, allopatric and sympatric describe what, which means the creation of new species?
[ "bacterial", "accumulation", "extinction", "speciation" ]
D
18.2 Formation of New Species Speciation occurs along two main pathways: geographic separation (allopatric speciation) and through mechanisms that occur within a shared habitat (sympatric speciation). Both pathways isolate a population reproductively in some form. Mechanisms of reproductive isolation act as barriers be...
sciq
sciq_01_04618
How many pairs of autosomes are there?
[ "four", "Seven", "five", "three" ]
D
ARC-Challenge
arc_04_02410
Which feature best helps an animal defend itself from predators?
[ "a cat's long tail", "a dog's thick fur", "a beaver's flat tail", "a skunk's strong scent" ]
D
null