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openbookqa
obqa_02_01535
A puppy has a kink in his tail, but he lacked it yesterday. The puppy ______ a broken tail.
[ "inherited", "absorbed", "wanted", "acquired" ]
D
the condition of the parts of an organism are acquired characteristics
sciq
sciq_01_02616
What is the common name for the midpoint between high and low tide?
[ "clouds level", "middle level", "sea level", "floods level" ]
C
Sea level is the midpoint between high and low tide. It can vary around Earth.
openbookqa
obqa_02_04459
Max mixed some orange flavored powder in a glass of water until there it was dissolved. His sister tasted it and it tasted like
[ "cola", "dark chocolate milk", "a citrus fruit", "lemons and apples" ]
C
dissolving a substance in water causes the water to taste like that substance
openbookqa
obqa_02_03117
energy is required for survival, and this is primarily delivered by
[ "the moon shining at night", "the fifth planet from the sun", "the closest star to our planet", "the vast ocean body" ]
C
the sun is the source of energy for life on Earth
sciq
sciq_01_06853
The effect of gravity on circulation means that it is harder to get blood up from the legs as the body takes on this?
[ "horizontal orientation", "frontal orientation", "vertical orientation", "dorsal orientation" ]
C
Chapter 15 1 The heart rate increases to send more blood to the muscles, and the liver releases stored glucose to fuel the muscles. 3 The effect of gravity on circulation means that it is harder to get blood up from the legs as the body takes on a vertical orientation. 5 The release of urine in extreme fear. The sympat...
openbookqa
obqa_02_01795
The excretory system removes waste from what?
[ "fire", "persons insides", "oceans", "body of paragraph" ]
B
the excretory system removes waste from the body
ARC-Easy
arc_04_00908
The body is able to detect pressure on its surface by which direct means?
[ "releasing of hormones in skin", "changing in volume of fat and muscle cells", "signaling by sensory neurons", "changing of voltage in interneurons" ]
C
null
medmcqa
medmcqa_05_03064
Thiamine level is best monitored by
[ "Transketolase level in blood", "Thiamine level in blood", "G6PD activity", "Reticulocytosis" ]
A
The activation of apo-transketolase in erythrocyte lysate by thiamine diphosphate added in vitro has become the accepted index of thiamine nutritional status.
openbookqa
obqa_02_00413
Feeling sweaty is normal on the ocean because
[ "the desert is drier", "the ocean is wet", "there is more moisture in the air", "the moisture is higher up" ]
C
as distance from water decreases , humidity will increase
ARC-Challenge
arc_04_02411
Which factor will prompt an animal's fight-or-flight response?
[ "population size", "competition for food", "seasonal temperatures", "protection of the environment" ]
B
null
openbookqa
obqa_02_04006
a student leaves a bag of acorns on the playground, which one of these will most likely take it?
[ "a fish in the pond", "a dog in the house", "a stray local chipmunk", "a tiger in the zoo" ]
C
a chipmunk eats acorns
medmcqa
medmcqa_05_01827
Capgras syndrome is
[ "delusion of marital infedility", "delusion of love", "delusion of persecution", "delusion of doubles" ]
D
o Delusion that a familiar person is replaced by an imposter This is more common in Alzeimers demetia and organic conditions. ref.kaplon and sadock, synopsis of psychiatry, 11 th edition, pg No.333
math_qa
mathqa_03_04943
a batsman scored 150 runs which included 5 boundaries and 10 sixes . what percent of his total score did he make by running between the wickets ?
[ "45 %", "46.67 %", "600 / 11", "55 %" ]
B
"explanation : number of runs made by running , = > 150 − ( 5 × 4 + 10 × 6 ) . = > 150 − 80 = > 70 hence , the required percentage is : - = > 70 / 150 * 100 = > 46.67 % answer : b"
ARC-Challenge
arc_04_02431
Which of these stars is most similar to the Sun?
[ "the red giant star Arcturus", "the white dwarf star Sirius B", "the main sequence star Alpha Mensae", "the blue supergiant star Rigel" ]
C
null
sciq
sciq_01_00052
In the absence of air resistance, all falling objects accelerate at the same rate due to what force?
[ "velocity", "weight", "motion", "gravity" ]
D
What if you were to drop a bowling ball and a soccer ball at the same time from the same distance above the ground? The bowling ball has greater mass than the basketball, so the pull of gravity on it is greater. Would it fall to the ground faster? No, the bowling ball and basketball would reach the ground at the same t...
openbookqa
obqa_02_02161
Needing to predict planting and harvesting times and when certain food animals would hibernate, early humans learned repeating weather patterns, star formations and time intervals to realize that
[ "the sky is usually blue at night", "most plants take a year to grow", "one year consists of 365 days and nights", "the sun is still for 12 months a year" ]
C
one year is equal to 365 days
sciq
sciq_01_03649
What is the term for water that contains one or more dissolved substances?
[ "evaporation solution", "sediment solution", "dilute solution", "aqueous solution" ]
D
We want to focus on solutions where the solvent is water. An aqueous solution is water that contains one or more dissolved substances. The dissolved substances in an aqueous solution may be solids, gases, or other liquids. Some examples are listed in the Table above . Other examples include vinegar (acetic acid in wate...
medmcqa
medmcqa_05_02763
Lisch Nodules are seen
[ "Neurofibromatosis I", "Sturge weber's syndrome", "Tuberous sclerosis", "Von hippel lindau syndrome" ]
A
Harrison's principles of internal medicine 17 th edition. *Multiple neurofibromas usually in combination with 6 or more CALM measuring>1.5 cm, axillary freckling and multiple Lisch nodules are seen in NF type 1.
medmcqa
medmcqa_05_04671
"Autoinfection" is seen with:
[ "Ascaris", "Strongyloides", "Giardia", "Gnasthostoma" ]
B
Strongyloides
sciq
sciq_01_06877
The energy in sunlight is also known as what kind of energy?
[ "geothermal energy", "solar energy", "kinetic energy", "potential energy" ]
B
The energy in sunlight, or solar energy, can be used to heat homes. It can also be used to produce electricity in solar cells. However, solar energy may not be practical in areas that are often cloudy.
openbookqa
obqa_02_01916
Reducing bacteria in food prevents what?
[ "electricity", "maladies", "observation", "signals" ]
B
reducing bacteria in food prevents illness in people
ARC-Easy
arc_04_01778
A teacher demonstrates a chemical reaction. A student observes that the test tube in which the reaction occurs becomes warm. What is the source of the thermal energy generated by the reaction?
[ "energy stored in the reactants", "breaking bonds of the reactants", "kinetic energy absorbed by the reaction", "potential energy absorbed by the reaction" ]
A
null
sciq
sciq_01_03807
What is known as the universal solvent?
[ "vinegar", "water", "air", "oil" ]
B
The ability of a solute to dissolve in a particular solvent is called solubility . Many chemical substances are soluble in water. In fact, so many substances are soluble in water that water is called the universal solvent. Water is a strongly polar solvent, and polar solvents are better at dissolving polar solutes. Man...
medmcqa
medmcqa_05_01673
Recommended dose of prednisolone for the treatment of desquamative gingivitis?
[ "Daily dose of 40 to 50 mg and maintenance dose of 5 to 10 mg", "Daily dose of 30 to 40 mg and maintenance dose of 5 to 10 mg", "Daily dose of 30 to 40 mg and maintenance dose of 10 to 20 mg", "Daily dose of 40 to 50 mg and maintenance dose of 10 to 20 mg" ]
B
The recommended dose of prednisolone in the treatment of desquamative gingivitis is daily dose of 30 - 40mg and gradually reduced to daily maintenance of 5-10mg.
openbookqa
obqa_02_00312
Riding a two wheeled human powered vehicle is good for the environment because
[ "it runs without fuel", "it helps people stay in shape", "they are cheaper to maintain", "they are more fun to drive" ]
A
riding a bike does not cause pollution
math_qa
mathqa_03_02690
when a random experiment is conducted , the probability that event a occurs is 1 / 5 . if the random experiment is conducted 4 independent times , what is the probability that event a occurs exactly twice ?
[ "16 / 625", "56 / 625", "96 / 625", "126 / 625" ]
C
"one case is : 1 / 5 * 1 / 5 * 4 / 5 * 4 / 5 = 16 / 625 the total number of possible cases is 4 c 2 = 6 p ( event a occurs exactly twice ) = 6 * ( 16 / 625 ) = 96 / 625 the answer is c ."
ARC-Easy
arc_04_00541
The human body gets the energy it needs for growth and repair directly from
[ "soil", "food", "sunlight", "water" ]
B
null
openbookqa
obqa_02_03472
Soil could be Earth's what?
[ "dermis", "Buddy", "Magic", "Tears" ]
A
studying a soil sample means studying the microorganisms in that soil
medmcqa
medmcqa_05_02328
Colon contains
[ "Parietal cells", "Chief cells", "Brunner's gland", "Goblet cells" ]
D
Mucous glands: Cell of mucous acini are tall with flat nuclei at their bases. The lumen of these acini is larger than the serous acini. In mucous glands the secretion contains mucopolysaccharides. The secretion collects in the apical pas of the cells. As a result nuclei are pushed to the base of the cell, and may be fl...
openbookqa
obqa_02_01065
A paper clip is often made of
[ "cobalt", "wood", "styrofoam", "paper" ]
A
a paper clip is often made of ferromagnetic metals
sciq
sciq_01_02545
What is another name for producers?
[ "plants", "rotifers", "allergens", "autotrophs" ]
D
Producers are organisms that produce food for themselves and other organisms. They use energy and simple inorganic molecules to make organic compounds. The stability of producers is vital to ecosystems because all organisms need organic molecules. Producers are also called autotrophs. There are two basic types of autot...
sciq
sciq_01_07807
What color is neptune?
[ "blue", "yellow", "pink", "white" ]
A
Like Uranus, Neptune is blue. The blue color is caused by gases in its atmosphere, including methane. Neptune is not a smooth looking ball like Uranus. The planet has a few darker and lighter spots. When Voyager 2 visited Neptune in 1986, there was a large dark-blue spot south of the equator. This spot was called the G...
sciq
sciq_01_06610
How do molecules react when a gas is heated?
[ "they disintegrate", "they explode", "they move slower", "they move faster" ]
D
Gases are compressible, meaning that when put under high pressure, the particles are forced closer to one another. This decreases the amount of empty space and reduces the volume of the gas. Gas volume is also affected by temperature. When a gas is heated, its molecules move faster and the gas expands. Because of the v...
sciq
sciq_01_02706
Both solids and liquids hold a definite what?
[ "shape", "mass", "size", "volume" ]
D
You encounter solids and liquids in many forms in your everyday life. Solids, unlike liquids, hold a definite shape. Both solids and liquids hold a definite volume. However, on a molecular level, these two states of matter are quite different. In this lesson we will introduce some of the properties of liquids and solid...
openbookqa
obqa_02_03891
If a thing is residing in a hollowed out part of a tree, then it is probably
[ "a whale", "an antelope", "a person", "a scavenger" ]
D
some raccoons live in hollow logs
sciq
sciq_01_01173
What is the opposite of nuclear fusion?
[ "Solar Power", "nuclear fission", "might fission", "energy fission" ]
B
Nuclear fusion is the opposite of nuclear fission. In fusion, two or more small nuclei combine to form a single, larger nucleus. An example is shown in Figure below . In this example, two hydrogen nuclei fuse to form a helium nucleus. A neutron and a great deal of energy are also released. In fact, fusion releases even...
math_qa
mathqa_03_04895
how many shots of 1 cm radius can be prepared from a sphere of 3 cm radius ?
[ "33", "88", "27", "88" ]
C
"4 / 3 π * 3 * 3 * 3 = 4 / 3 π * 1 * 1 * 1 * x x = 27 answer : c"
sciq
sciq_01_02297
In the body, what essential substance is pumped from the heart into arteries and then eventually into capillaries?
[ "water", "spinal fluid", "lymphatic Fluid", "blood" ]
D
The solution to the last part of the example shows that speed is inversely proportional to the square of the radius of the tube, making for large effects when radius varies. We can blow out a candle at quite a distance, for example, by pursing our lips, whereas blowing on a candle with our mouth wide open is quite inef...
medmcqa
medmcqa_05_00536
A 65 year old male had MI one year ago. Now the same patients presents with hypertension. Which of the following drug is best suited for this patient?
[ "Clonidine", "Thiazide", "Metoprolol", "Lisinopril" ]
D
Ans. (d) LisinoprilRef.: Harrison 19th ed. /1623, 18th edition ch. 247* ACEIs attenuate the development of left ventricular hypertrophy, improve symptomatology and risk of death from CHF, and reduce morbidity and mortality rates in post-myocardial infarction patients.* Similar benefits in cardiovascular morbidity and m...
sciq
sciq_01_04874
Serious imbalances, cancer and other diseases can result when expression of what goes awry?
[ "genes", "ribosomes", "gametes", "proteins" ]
A
sciq
sciq_01_05412
What states that chemical reactions occur when atoms, ions, or molecules collide?
[ "elemental theory", "disturbance theory", "collision theory", "reaction theory" ]
C
Collision theory states that chemical reactions occur when atoms, ions, or molecules collide. In other words, these species need to make contact with one another in order for a reaction to take place. Based on this concept, along with a couple of other key points, collision theory helps to explain why certain factors w...
sciq
sciq_01_07645
What evolutionary concept emphasizes reproductive isolation?
[ "biological species concept", "toxic species concept", "chemical species concept", "reproductive method concept" ]
A
24.1 The biological species concept emphasizes reproductive isolation.
ARC-Challenge
arc_04_02181
Where is the biological magnification of pollutants most likely to be the greatest?
[ "in an estuary", "in an open ocean", "at an intertidal zone", "at a hydrothermal vent" ]
A
null
sciq
sciq_01_00227
What property of warm air causes it to rise above cold air?
[ "greater pressure", "greater density", "higher temperature", "lower density" ]
D
The warm-air vent is placed near the floor of the room. Warm air is less dense than cold air so it rises. If the warm-air vent were placed near the ceiling instead, how would this affect the transfer of thermal energy throughout the room?.
openbookqa
obqa_02_04952
A bulldozer alters the area of
[ "skyscrapers", "the stock market", "air", "water" ]
A
breaking down an object changes that object 's shape and mass
ARC-Challenge
arc_04_02758
In a healthy forest, dead trees and limbs fall to the ground and decompose. Which of these statements best describes why decomposition is important to a forest ecosystem?
[ "Nutrients are released when wood is broken down.", "Worms produce oxygen used by other organisms.", "Dead trees provide nest sites for many different species of birds.", "Water is stored in dead trees and limbs." ]
A
null
medmcqa
medmcqa_05_02182
Bronchopulmonary segment is supplied by ?
[ "Primary bronchus", "Secondary bronchus", "Teiary bronchus", "Principal bronchus" ]
C
Ans. is 'c' i.e., Teiary bronchusIt is supplied independently by a segmental (teiary) bronchus and a teiary branch of the pulmonary aery.
sciq
sciq_01_02769
Transport epithelia that function in maintaining water balance also often function in disposal of what?
[ "absorption wastes", "bacteria", "metabolic wastes", "organisms wastes" ]
C
sciq
sciq_01_01252
Rainwater absorbs carbon dioxide (co 2 ) as it falls. the co 2 combines with water to form what?
[ "carbonic acid", "methane gas", "carbon monoxide", "nitrate acid" ]
A
Rainwater absorbs carbon dioxide (CO 2 ) as it falls. The CO 2 combines with water to form carbonic acid. The slightly acidic water is especially good at dissolving the rock limestone. Groundwater creates landforms by dissolving away rock.
math_qa
mathqa_03_02887
on the coordinate plane , points p and u are defined by the coordinates ( - 1,0 ) and ( 3,3 ) , respectively , and are connected to form a chord of a circle which also lies on the plane . if the area of the circle is ( 25 / 4 ) π , what are the coordinates of the center of the circle ?
[ "( 1.5", "'", "( 2", "'" ]
D
although it took me 3 mins to solve this question using all those equations , later i thought this question can be solved easily using options . one property to keep in mind - a line passing through the centre of the circle bisects the chord ( or passes from the mid point of the chord ) . now mid point of chord here is...
sciq
sciq_01_08002
What is the unique larval form of mollusks called?
[ "scallop", "trochophore", "hydra", "microfilariae" ]
B
Mollusks reproduce sexually. Most species have separate male and female sexes. Gametes are released into the mantle cavity. Fertilization may be internal or external, depending on the species. Fertilized eggs develop into larvae. There may be one or more larval stages. Each one is different from the adult stage. Mollus...
sciq
sciq_01_09871
Catabolic and anabolic hormones in the body help regulate these?
[ "nutrient levels", "metabolic processes", "brain signals", "hormone levels" ]
B
Hormonal Regulation of Metabolism Catabolic and anabolic hormones in the body help regulate metabolic processes. Catabolic hormones stimulate the breakdown of molecules and the production of energy. These include cortisol, glucagon, adrenaline/epinephrine, and cytokines. All of these hormones are mobilized at specific ...
medmcqa
medmcqa_05_01924
In Testicular Feminisation Syndrome (Androgen Insensitivity Syndrome) Gonadectomy is indicated -
[ "As soon as it is diagnosed", "At puberty", "Only when malignancy develops in it", "When hirsutism is evident" ]
B
Ans-B At puberty - to ensure complete growth is achieved.
sciq
sciq_01_01824
Do motile cilia usually occur in small or large numbers on the cell surface?
[ "neither", "mixed", "large", "small" ]
C
math_qa
mathqa_03_04138
at a certain paint store forest green is made by mixing 4 parts blue paint with 3 parts yellow paint . verdant green is made by mixing 4 parts yellow paint with 3 parts blue paint . how many liters of yellow paint must be added to 7 liters of forest green to change it to verdant green ?
[ "5 / 3", "2 / 7", "7 / 3", "1 / 7" ]
C
7 liter of forset green have 4 liter of blue and 3 liter of yellow suppose we add x liter of yellow to make it a verdant green so the ratio of blue to yellow in verdant green is ¾ so the equation is blue / yellow = 4 / ( 3 + x ) = ¾ 9 + 3 x = 16 = > x = 7 / 3 answer : c
sciq
sciq_01_09238
Many ceramics are composed of what, which are salts containing anions composed of silicon and oxygen?
[ "vinylates", "crystals", "silicates", "soils" ]
C
At 1600 °C, quartz melts to yield a viscous liquid. When the liquid cools, it does not crystallize readily but usually supercools and forms a glass, also called silica. The SiO4 tetrahedra in glassy silica have a random arrangement characteristic of supercooled liquids, and the glass has some very useful properties. Si...
math_qa
mathqa_03_03617
a bag contains 3 white marbles and 3 black marbles . if each of 3 girls and 3 boys randomly selects and keeps a marble , what is the probability that all of the girls select the same colored marble ?
[ "1 / 35", "1 / 10", "1 / 15", "1 / 20" ]
B
first , total ways to select for all boys and girls , i . e 6 ! / ( 3 ! * 3 ! ) = 6 * 5 * 4 * 3 * 2 * 1 / 3 * 2 * 1 * 3 * 2 * 1 = 20 then there are one two way girls can have all same colors , either white or black . the number of ways in which 3 girls can select 3 white balls = 3 c 3 = 1 the number of ways in which 3 ...
math_qa
mathqa_03_03030
a 270 m long train running at the speed of 120 km / hr crosses another train running in opposite direction at the speed of 80 km / hr in 9 sec . what is the length of the other train ?
[ "230", "200", "250", "300" ]
A
"answer : option a explanation : relative speed = 120 + 80 = 200 km / hr . = 200 * 5 / 18 = 500 / 9 m / sec . let the length of the other train be x m . then , ( x + 270 ) / 9 = 500 / 9 = > x = 230 . answer a"
sciq
sciq_01_02798
Phase labels - and even special conditions - are sometimes included for the substances that are part of what?
[ "toxic equations", "carbon equations", "chemical equations", "solid equations" ]
C
Many chemical equations also include phase labels for the substances: (s) for solid, (ℓ) for liquid, (g) for gas, and (aq) for aqueous (i. , dissolved in water). Special conditions, such as temperature, may also be listed above the arrow. For example, 2NaHCO.
sciq
sciq_01_04185
Which factor often changes a protein from an inactive form to an active form?
[ "nitrogen groups addition", "oxygen groups addition", "lipid groups addition", "phosphate groups addition" ]
D
math_qa
mathqa_03_04505
shreehari has 125 pencils . there are 25 students are studying in his class . he would like to give each student the same amount of pencils , how much should he give to each student ?
[ "12", "7", "5", "15" ]
C
125 / 25 = 5 the answer is c .
openbookqa
obqa_02_04547
Our only star provides us with energy that is
[ "temporary", "inferior", "expensive", "reusable" ]
D
solar energy is a renewable resource
sciq
sciq_01_01911
What is the name of the symbiotic relationship in which one species benefits while the other species is not affected?
[ "pollenation", "mutualism", "differentiation", "commensalism" ]
D
Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. One species typically uses the other for a purpose other than food. For example, mites attach themselves to larger flying insects to get a “free ride. ” Hermit crabs use the shells of dead snails for homes.
math_qa
mathqa_03_03305
a man saves 25 % of his monthly salary . if an account of dearness of things he is to increase his monthly expenses by 10 % , he is only able to save rs . 175 per month . what is his monthly salary ?
[ "rs . 1000", "rs . 2000", "rs . 1500", "rs . 3000" ]
A
"income = rs . 100 expenditure = rs . 75 savings = rs . 25 present expenditure 75 + 75 * ( 10 / 100 ) = rs . 82.5 present savings = 100 – 82.50 = rs . 17.50 if savings is rs . 17.50 , salary = rs . 100 if savings is rs . 175 , salary = 100 / 17.5 * 175 = 1000 answer : a"
sciq
sciq_01_07364
What is an ionic bond in nature?
[ "electrostatic", "radioactive", "magnetic", "kinetic" ]
A
An ionic bond is electrostatic in nature.
sciq
sciq_01_07850
Tissues of marine bony fishes gain what from their surroundings?
[ "mercury", "absorb salts", "excess salts", "toxins" ]
C
sciq
sciq_01_06813
What signals the secretion of gastric acid?
[ "hormone", "pepsin", "leptin", "gastrin" ]
D
Gastrin, which signals the secretion of gastric acid.
math_qa
mathqa_03_02320
what will be the ratio between the area of a rectangle and the area of a triangle with one of the sides of rectangle as base and a vertex on the opposite side of rectangle .
[ "1 : 2", "2 : 1", "3 : 1", "data inadequate" ]
B
"area of δ ebc = 1 ⁄ 2 × bc × ef = 1 ⁄ 2 × bc × ab [ since , ef = ab ] area of δ ebc = 1 ⁄ 2 × area of δ abcd \ required ratio = 2 : 1 . answer b"
sciq
sciq_01_02157
Carbon behaves as a metal because it conducts which two things well?
[ "heat and electricity", "heat and water", "electricity and oxygen", "heat and magnetism" ]
A
Carbon behaves as a metal because it conducts heat and electricity well. It is a nonmetal because it is black and brittle and cannot be made into sheets or wires.
sciq
sciq_01_11331
The cell expels waste and other particles through a process called what?
[ "endocytosis", "metamorphisis", "exocytosis", "biosynthesis" ]
C
3.6 Active Transport The combined gradient that affects an ion includes its concentration gradient and its electrical gradient. Living cells need certain substances in concentrations greater than they exist in the extracellular space. Moving substances up their electrochemical gradients requires energy from the cell. A...
sciq
sciq_01_08686
The distance between corresponding points of adjacent waves is known as the __________
[ "bandwidth", "absorption", "wavelength", "amplitude" ]
C
Wavelength is the distance between corresponding points of adjacent waves. Wavelengths of electromagnetic waves range from many kilometers to a tiny fraction of a millimeter.
math_qa
mathqa_03_03696
a and b undertake to do a piece of work for rs . 1200 . a alone can do it in 6 days while b alone can do it in 8 days . with the help of c , they finish it in 3 days . find the share of c .
[ "150", "450", "750", "800" ]
A
"c ' s 1 day ' s work = 1 / 3 - ( 1 / 6 + 1 / 8 ) = 24 a : b : c = ratio of their 1 day ' s work = 1 / 6 : 1 / 8 : 1 / 24 = 4 : 3 : 1 . a ’ s share = rs . ( 1200 * 4 / 8 ) = rs . 600 , b ' s share = rs . ( 1200 * 3 / 8 ) = rs . 450 c ' s share = rs . [ 1200 - ( 300 + 225 » ) = rs . 150 . answer is a"
sciq
sciq_01_06996
In which continent are meerkats most likely to be found?
[ "South America", "africa", "North America", "Australia" ]
B
Another example of cooperation is seen with meerkats. Meerkats are small mammals that live in Africa. They also live in groups and cooperate with one another. For example, young female meerkats act as babysitters. They take care of the baby meerkats while their parents are away looking for food.
medmcqa
medmcqa_05_04862
Anteroposterior stability of the knee joint is maintained by:
[ "Oblique popliteal ligament", "Medial menisci", "Cruciate ligaments", "Medial collateral ligaments" ]
C
Ans. C. Cruciate ligamentsThe cruciate ligaments of the knee are the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL). These ligaments are two strong, rounded bands that extend from the head of the tibia to the intercondyloid notch of the femur. They cross each other like the limbs of an X. Th...
openbookqa
obqa_02_03154
If you miss seeing a full moon, how long will you have to wait until you get another chance?
[ "7 days", "a month", "a week", "168 hours" ]
B
each of the moon 's phases usually occurs once per month
sciq
sciq_01_07909
What source of water pollution picks up chemicals from the ground with water and carries them to bodies of water?
[ "fertilizer", "runoff", "erosion", "sediment" ]
B
Water pollution comes from many sources. One of the biggest sources is runoff. Runoff picks up chemicals such as fertilizer from agricultural fields, lawns, and golf courses. It carries the chemicals to bodies of water. The added nutrients from fertilizer often cause excessive growth of algae, creating algal blooms (se...
medmcqa
medmcqa_05_01443
A 12 year old boy presents with recurrent attacks of conjunctivitis for the last 2 years with intense itching and ropy discharge. The diagnosis is
[ "Vernal conjunctivitis", "Phlyctenular conjunctivitis", "Trachoma", "Viral conjunctivitis" ]
A
A i.e. Vernal conjunctivitis
medmcqa
medmcqa_05_02955
Surfactant lining the alveoli
[ "Helps prevent alveolar collapse.", "Is produced in alveolar type I cells and secreted into the alveolus.", "Is increased in the lungs of heavy smokers.", "Is a glycolipid complex." ]
A
The low surface tension when the alveoli are small is due to the presence in the fluid lining the alveoli of surfactant, a lipid surface-tension-lowering agent. If the surface tension is not kept low when the alveoli become smaller during expiration, they collapse in accordance with the law of Laplace.
medmcqa
medmcqa_05_02588
Cast metal is protected from localized porosity by
[ "Bevelling", "Adding reservior sprue.", "Tunneling", "Investment" ]
B
Proper planning if sprue location and reservior are essential to prevent porosity in cast alloys.
medmcqa
medmcqa_05_02552
Fulminant hepatitis is commonest with
[ "HAV", "HBV", "HCV", "HDV Superinfection" ]
D
In HDV, Fulminant viral hepatitis is 5-20%; HEV: 1-2%; HBV: 0.1-1%; HCV: 0.1%; HAV: 0.1%Reference: Harrison&;s Principles of Internal Medicine; 19th edition; Chapter 360; Acute Viral Hepatitis
sciq
sciq_01_02648
Where does the earth gets its energy from?
[ "heat", "sun", "precipitation", "decomposers" ]
B
Earth gets its energy from the Sun. The Sun gives off photons of energy that travel in waves. All the wavelengths of the Sun’s energy make up the electromagnetic (EM) spectrum.
math_qa
mathqa_03_01397
if * stands for / , / stands for - , + stands for * and - stands for + , then 9 / 8 * 7 + 5 - 10 = ?
[ "13.3", "10.8", "10.7", "11.4" ]
A
9 / 8 * 7 + 5 - 10 this expression becomes 9 - 8 / 7 * 5 + 10 after exchanging the symbols then the values for it would be 9 - 1.142 * 5 + 10 = 13.290 ( app ) = 13.3 answer : a
sciq
sciq_01_07305
More common in developing countries, parasitic diseases caused by roundworms often result from poor practice of what?
[ "agriculture", "personal hygiene", "preventative medicine", "education" ]
B
Diseases caused by roundworms are more common in developing countries. Many parasitic diseases caused by roundworms result from poor personal hygiene. Contributing factors may include.
math_qa
mathqa_03_04448
a semicircle is drawn with ab as its diameter . from c , a point on ab , a line perpendicular to ab is drawn , meeting the circumference of the semicircle at d . given that ac = 2 cm and cd = 6 cm , the area of the semicircle in square cm will be ?
[ "30 pi'", "40 pi'", "50 pi'", "60 pi'" ]
C
let o be center of circle and radius be x . c can be anywhere on ab . let us suppose that c is somewhere between a and o . ac = 2 cm . . . . so co = ( x - 2 ) do = x , cd = 6 cm cdo form a right angled triangle with right angle at c . using pythagoras theorem , x ^ 2 = 6 ^ 2 + ( x - 2 ) ^ 2 4 x = 40 x = 10 cm area = [ ...
math_qa
mathqa_03_04660
p , q and r together earn rs . 1620 in 9 days . p and r can earn rs . 600 in 5 days . q and r in 7 days can earn rs . 910 . how much amount does r can earn per day ?
[ "rs . 40", "rs . 70", "rs . 90", "rs . 100" ]
B
"explanation : amount earned by p , q and r in 1 day = 1620 / 9 = 180 - - - ( 1 ) amount earned by p and r in 1 day = 600 / 5 = 120 - - - ( 2 ) amount earned by q and r in 1 day = 910 / 7 = 130 - - - ( 3 ) ( 2 ) + ( 3 ) - ( 1 ) = > amount earned by p , q and 2 r in 1 day - amount earned by p , q and r in 1 day = 120 + ...
ARC-Easy
arc_04_01250
A student pushes a wooden block across a sheet of sandpaper. Which characteristic of the block increases?
[ "hardness", "mass", "size", "temperature" ]
D
null
sciq
sciq_01_01371
The numbers and types of species in most ecosystems change to some degree through time and this is called?
[ "physiological succession", "environmental succession", "continuous succession", "ecological succession" ]
D
Imagine walking in the forest in Figure below . The towering trees have been growing here for hundreds of years. It may seem as though the forest has been there forever. But no ecosystem is truly static. The numbers and types of species in most ecosystems change to some degree through time. This is called ecological su...
sciq
sciq_01_01513
What is the colorless gas with a sharp, pungent odor used in smelling salts?
[ "nitrogen", "hydrogen", "ammonia", "helium" ]
C
Ammonia is a colorless gas with a sharp, pungent odor. Smelling salts utilize this powerful odor. Gaseous ammonia readily liquefies to give a colorless liquid that boils at −33 °C. Due to intermolecular hydrogen bonding, the enthalpy of vaporization of liquid ammonia is higher than that of any other liquid except water...
math_qa
mathqa_03_00557
a can complete a project in 30 days and b can complete the same project in 30 days . if a and b start working on the project together and a quits 10 days before the project is completed , in how many days will the project be completed ?
[ "18 days", "27 days", "26.67 days", "5 days" ]
D
"let x = the number of days taken to complete the project . the amount of work done by a is ( x - 10 ) * ( 1 / 20 ) . the amount of work done by b is ( x ) * ( 1 / 30 ) . ( 1 / 30 ) * ( x - 10 ) + ( 1 / 30 ) * ( x ) = 1 ( x / 30 ) + ( x / 30 ) - ( 10 / 30 ) = 1 2 x / 30 = 1 / 3 x = 5 therefore , the answer is d : 5 ."
openbookqa
obqa_02_03914
When observing animals in the wild, which of these are you most likely to see?
[ "A frog stalking a rabbit", "A bear sticking its claws in the river", "A wolf hunting an eagle", "A tiger hunting a dolphin" ]
B
predators eat other animals
sciq
sciq_01_03368
What forms a barrier between the cytoplasm and the environment outside the cell?
[ "cuticle", "cell wall", "epidermis", "plasma membrane" ]
D
The plasma membrane forms a barrier between the cytoplasm and the environment outside the cell. The plasma membrane has selective permeability.
math_qa
mathqa_03_00615
it takes 40 identical printing presses 15 hours to print 500,000 papers . how many hours would it take 30 of these printing presses to print 500,000 papers ?
[ "16", "18", "20", "21" ]
C
40 printing presses can do 1 / 15 of the job each hour . 30 printing presses can do 3 / 4 * 1 / 15 = 1 / 20 of the job each hour . the answer is c .
medmcqa
medmcqa_05_03190
Anatomical dead space is?
[ "l/3rd of tidal volume", "2/5th of tidal volume", "10 ml/kg of body weight", "15 ml/kg of body weight" ]
A
ANSWER: (A) 1/3rd of tidal volumeREF: Guyton physiology 11th edition page 478, http://en.wikipedia.org/wiki/Dead_space_%28ph ysiology%29Indirect repeat in December 2010"The normal dead space air in a young adult man is about 150 millilitres. This increases slightly with age1'Some of the air a person breathes never reac...
math_qa
mathqa_03_01977
x does a work in 10 days . y does the same work in 15 days . in how many days they together will do the same work ?
[ "10", "15", "3", "6" ]
D
"x ' s 1 day ' s work = 1 / 10 y ' s 1 day ' s work = 1 / 15 ( x + y ) ' s 1 day ' s work = ( 1 / 10 + 1 / 15 ) = 1 / 6 both together will finish the work in 6 days . correct option is d"
medmcqa
medmcqa_05_04722
Treatment of Phlyctenular conjunctivitis is
[ "Systemic steroids", "Topical steroids", "Antibiotics", "Miotics" ]
B
It's an endogenous allergy treated by anti allergics and mild topical steroids Refer: Khurana 6th edition page number 83
sciq
sciq_01_05992
All elements are most stable when their outermost shell is filled with electrons according to which rule?
[ "octet rule", "coupling rule", "string rule", "quartet rule" ]
A
Chemical Reactions and Molecules All elements are most stable when their outermost shell is filled with electrons according to the octet rule. This is because it is energetically favorable for atoms to be in that configuration and it makes them stable. However, since not all elements have enough electrons to fill their...
math_qa
mathqa_03_02383
if ( n + 2 ) ! / n ! = 110 , n = ?
[ "2 / 131", "9", "10", "11" ]
B
"( n + 2 ) ! / n ! = 110 rewrite as : [ ( n + 2 ) ( n + 1 ) ( n ) ( n - 1 ) ( n - 2 ) . . . . ( 3 ) ( 2 ) ( 1 ) ] / [ ( n ) ( n - 1 ) ( n - 2 ) . . . . ( 3 ) ( 2 ) ( 1 ) ] = 132 cancel out terms : ( n + 2 ) ( n + 1 ) = 110 from here , we might just test the answer choices . since ( 11 ) ( 10 ) = 110 , we can see that n...
openbookqa
obqa_02_02395
As the Earth rotates around a star, the world may
[ "freeze solid", "become miniature", "explode", "enjoy various seasons" ]
D
the Earth revolving around the Sun causes the seasons to occur on its axis
sciq
sciq_01_10362
What conducts nerve-like electrical signals that help integrate whole-plant function?
[ "the stamen", "the ploem", "the stem", "the spicule" ]
B
sciq
sciq_01_00948
Adulthood is divided into how many stages?
[ "three", "two", "four", "five" ]
A
Adulthood is divided into the stages of early, middle, and late adulthood.