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ARC-Challenge
arc_04_02218
An old T-shirt can be ripped into smaller pieces and used as rags. An empty milk jug can be used to water houseplants. Both of these are examples of how
[ "saving water conserves future resources", "using old materials can waste money", "plants need water to be healthy", "everyday materials can be reused" ]
D
null
sciq
sciq_01_03605
What is water falling from the sky called?
[ "precipitation", "snow", "temperature", "acid" ]
A
sciq
sciq_01_03963
What is the name of the the most efficient possible engine?
[ "ventilation engine", "excitation engine", "carnot engine", "diesel engine" ]
C
An ideal engine, the most efficient theoretically possible, is called a Carnot Engine. Its efficiency is given by the following formula, where the temperatures are, respectively, the temperature of the exhaust environment and the temperature of the heat input, in Kelvins. In a Carnot engine heat is input and exhausted ...
openbookqa
obqa_02_01303
Jamaican natives have a dark skin tone do to
[ "lack of nutrients", "camouflage", "solar radiation", "their diet" ]
C
living in an environment causes an organism to adapt to that environment
sciq
sciq_01_05536
What simple machine consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point?
[ "pully", "spoke", "wheel and axle", "bloom and axle" ]
C
A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point. When force is applied to the inner axle, the ideal mechanical advantage is less than 1. When force is applied to the outer wheel, the ideal me...
math_qa
mathqa_03_00884
in a rectangular coordinate system , what is the area of a rhombus whose vertices have the coordinates ( 0 , 3.5 ) , ( 9 , 0 ) , ( 0 , - 3.5 ) , ( - 9 , 0 ) ?
[ "63", "88", "112", "116" ]
A
"ares of rhombus = 1 / 2 * d 1 * d 2 length of 1 st diagonal = 9 + 9 = 18 length of 2 nd diagonal = 3.5 + 3.5 = 7 area = 1 / 2 * 18 * 7 = 63 a is the answer"
medmcqa
medmcqa_05_03263
The Normal Poal venous pressure is:
[ "4-6 mm Hg", "8-12 mm Hg", "26-30 mm Hg", "12-16 mm saline" ]
B
8-12 mm Hg
math_qa
mathqa_03_02331
a boy is traveling from his house to school at 10 km / hr and reached school 2 hours late . next day he traveled 20 km / hr and reached 1 hour early . then find the distance between house and school ?
[ "50 km", "45 km", "33 km", "60 km" ]
D
let distance be x s 1 = 10 km / hr s 2 = 20 km / hr t 1 = x / 10 hr t 2 = x / 20 hr difference in time = 2 + 1 = 3 hr ( x / 10 ) - ( x / 20 ) = 3 x = 60 km answer is d
openbookqa
obqa_02_04200
A mechanism that a ____ uses is a ____
[ "see-saw; pulley", "crane; pulley", "lever; lever", "cat; fishing rod" ]
B
a pulley is used for lifting objects
sciq
sciq_01_02681
What do obligate aerobes need to live?
[ "blood", "dioxide", "oxygen", "acid" ]
C
Organisms that are obligate aerobes need oxygen to live. That is, they use oxygen as a terminal electron acceptor while making ATP (see the “Cellular Respiration” concept). Humans are obligate aerobes, and so are Mycobacterium tuberculosis bacteria. M. tuberculosis causes tuberculosis (TB). Obligate aerobes are found o...
openbookqa
obqa_02_04257
An Afghan Hound get all its hair from
[ "its parents", "the water", "the sun", "its siblings" ]
A
the length of the hair of an animal is an acquired characteristic
medmcqa
medmcqa_05_01753
A a1 selective adrenergic blocking agents used in benign prostatic hypertrophy is
[ "Prazosin", "Terazosin", "Doxazosin", "Tamsulosin" ]
D
D. i.e. (Tamsulosin) (135- KDT 6th) (83- Lippincott's 3rd)* Prazosi, Terazosin, Doxazosin are useful in the treatment of hypertension. Tamsulosin is indicated for the treatment of benign prostatic hypertrophy (83- Lippincott's 3rd)* According to KDT all are used in BPH. but Tamsulosin is best answer of choice* TAMSULOS...
openbookqa
obqa_02_02505
A plant photosynthesizing will do a more efficient job it it has
[ "thirty leaves", "ten leaves", "six leaves", "one leaf" ]
A
a leaf absorbs sunlight to perform photosynthesis
openbookqa
obqa_02_02147
One way to recycle is by turning
[ "plastic into food", "plastic into shoes", "plastic into trees", "plastic into rivers" ]
B
An example of recycling is using an object to make a new object
sciq
sciq_01_02002
What are responsible for the bending movements of the organelle?
[ "pores", "sporozoans", "dyneins", "muscles" ]
C
openbookqa
obqa_02_00160
An echo is produced by what type of reflection of sound source?
[ "Direct", "Distant", "Varied", "Single" ]
D
when a sound is produced inside of a room , there is sometimes an echo after the sound
medmcqa
medmcqa_05_00623
Primary Tuberculosis most commonly involves
[ "Lungs", "Liver", "Brain", "Intestine" ]
A
Answer is A (Lungs): The most common primary site for primary tuberculosis is the Lung. 'Primary site is the Lung in upto 95% of cases' - Oski's Pediatrics 'For both primary and reactivation tuberculosis the lungs are the most commonly affected site.' Most common primary site for Primary Tuberculosis is LungsQ Most com...
sciq
sciq_01_06035
What are the newest, outer layers of secondary xylem called?
[ "bark", "fibrous", "sapwood", "vascular" ]
C
sciq
sciq_01_07531
What term describes a way that small molecules or ions move across the cell membrane without input of energy by the cell?
[ "physical transport", "impassive transport", "immune transport", "passive transport" ]
D
Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. The three main kinds of passive transport are diffusion (or simple diffusion), osmosis, and facilitated diffusion. Simple diffusion and osmosis do not involve transport proteins. Facilitated diffus...
sciq
sciq_01_10198
Ionic, molecular, covalent, and metallic are major types of what state of matter?
[ "plasma", "solids", "gas", "liquid" ]
B
Summary The major types of solids are ionic, molecular, covalent, and metallic. Ionic solids consist of positively and negatively charged ions held together by electrostatic forces; the strength of the bonding is reflected in the lattice energy. Ionic solids tend to have high melting points and are rather hard. Molecul...
openbookqa
obqa_02_00690
Seasonal changes happens
[ "when some flowers cease to bloom in the cold months", "when ducks swim more in lakes", "when fish arise from water and sun themselves", "when all flowers bloom in the cold months" ]
A
An example of a seasonal change is plants becoming dormant in the winter
ARC-Easy
arc_04_01334
The students in an engineering class built a robot that stacks wooden blocks. A built-in computer controls the movement of the robot. The computer in the robot performs a function most similar to which part of the human body?
[ "lungs", "heart", "brain", "arms" ]
C
null
ARC-Challenge
arc_04_02145
Which land form is the result of the constructive force of a glacier?
[ "valleys carved by a moving glacier", "piles of rocks deposited by a melting glacier", "grooves created in a granite surface by a glacier", "bedrock hills roughened by the passing of a glacier" ]
B
null
sciq
sciq_01_08445
What happens when more glucose is present than the proteins can handle, in the body?
[ "excreted as urine", "metamorphosed as urine", "cultured as urine", "forms urine" ]
A
An example of this process occurs in the kidney. Glucose, water, salts, ions, and amino acids needed by the body are filtered in one part of the kidney. This filtrate, which includes glucose, is then reabsorbed in another part of the kidney. Because there are only a finite number of carrier proteins for glucose, if mor...
openbookqa
obqa_02_01628
A woman needs to check something with binoculars, so it is likely
[ "very near", "inside the room", "a ways away", "in outer space" ]
C
binoculars are used for observing distant objects
medmcqa
medmcqa_05_00744
Fidelity of protein translation depends on
[ "RNA polymeraes", "DNA polymeraes", "M-RNA polymeraes", "Amino acyl t-RNA synthetase" ]
D
In translation, proof reading of mRNA is done by Amino acyl- tRNA synthetase. Amino acyl t-RNA synthetase is responsible for fidelity (faithfulness) of protein translation.
openbookqa
obqa_02_02136
A person wanting to dry their shoes using a resource that is unlikely to expire could use
[ "a breeze", "a tree", "a river", "a snowbank" ]
A
wind is an inexhaustible resource
ARC-Easy
arc_04_02052
Signs in many stores and restaurants warn that microwaves are in use. What is the main reason for this warning?
[ "Some people do not like food cooked in microwave ovens.", "Microwaves sometimes affect people's sense of sight.", "Microwaves sometimes cause hair or teeth to fall out.", "Some people have pacemakers that may be affected by microwaves." ]
D
null
medmcqa
medmcqa_05_03162
Mucoepidermoid carcinoma of parotid arises from:
[ "Mucus secreting and epidermal cells", "Excretory cells", "Myoepithelium cells", "Acinus" ]
A
Muco epidermoid carcinoma is the M/C type of malignant salivary gland tumor. Mucoepidermoid tumor consists of following cells: Squamous cells * Mucus secreting cells Intermediate hybrid cells * Clear or hydropic cells. (progenitor of other cells) No myoepitheliai cells are seen Mucoepidermoid tumors similar to other tu...
sciq
sciq_01_03924
What is an interation between organisms or species for the same resources in an enviroment is called?
[ "contention", "opposition", "competition", "rivalry" ]
C
Competition is as an interaction between organisms or species for the same resources in an environment.
openbookqa
obqa_02_02606
Which of the following is never an element used to make carbohydrates for the plant?
[ "sand", "water", "sunlight", "carbon dioxide" ]
A
photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates
math_qa
mathqa_03_02295
if 7 ^ k = 2 , then 7 ^ ( 4 k + 2 ) =
[ "729", "754", "784", "783" ]
C
"7 ^ k = 2 7 ^ 4 k = 2 ^ 4 7 ^ 4 k = 16 7 ^ ( 4 k + 2 ) = 7 ^ 4 k * 7 ^ 2 = 16 * 49 = 784 answer : c"
sciq
sciq_01_02091
If a solution contains so much solute that its solubility limit is reached, the solution is said to be what?
[ "saturated", "temperatures", "carbohydrates", "Over done" ]
A
If a solution contains so much solute that its solubility limit is reached, the solution is said to be saturated, and its concentration is known from information contained inTable 9.2 "Solubilities of Various Solutes in Water at 25°C (Except as Noted)". If a solution contains less solute than the solubility limit, it i...
sciq
sciq_01_06674
What theory proposes that microorganisms are the cause of many diseases?
[ "mutated theory", "germ theory", "evolution theory", "malignant theory" ]
B
The germ theory proposes that microorganisms are the cause of many diseases.
math_qa
mathqa_03_04946
75 percent of andrea ' s living room floor is covered by a carpet that is 4 feet by 9 feet . what is the area of her living room floor ?
[ "48", "180 / 7", "50.4", "60" ]
A
75 % of area of the floor = 4 * 9 square feet = 36 square feet i . e . 100 % area of floor = ( 36 / 75 ) * 100 = 48 square feet answer : option a
sciq
sciq_01_06444
What do offsprings obtain from their parents in what is called, inheritance?
[ "mutations", "characteristics", "variations", "attributes" ]
B
medmcqa
medmcqa_05_01892
Barbiturates acts on -
[ "a - adrenergic receptors", "b - adrenergic receptors", "Cholinergic receptors", "GABA receptor" ]
D
Ans. is 'd' i.e., GABA receptors o Barbiturates act primarily at the GABA - BZD receptor - Cl- channel complex and potentiate GABAergic inhibition by increasing the lifetime of Cl- channel opening caused by GABA (Contrast benzodiazepines which enhance frequency of Cl- channel opening) - GABA facilitatory action.o Benzo...
openbookqa
obqa_02_00473
Humans cry when they are born, horses can walk when they are born, and birds can chirp when born because of
[ "TV", "learning from mom", "instinctive behavior", "school" ]
C
an animal knows how to do instinctive behaviors when it is born
medmcqa
medmcqa_05_02367
A 25-year-old patient undergoes road traffic injury. BP = 130/80 and pulse = 92/min good volume. Patient complains of upper abdominal pain. CECT is as shown as. The next line of management is?
[ "Conservative", "Exploratory laparotomy and packing", "Exploratory laparotomy and hepatectomy", "Exploratory laparotomy with hepatic artery ligation." ]
A
Ans. (a) Conservative.The following protocol for liver trauma is followed: Blunt abdominal trauma* Hemodynamic stability at admission or after two blood units transfusion* No signs of peritonitis | Abdominal US|| |Free intraperitioneal fluidNo free intraperitioneal fluid||Abdominal CTU/S* Only hepatic injury* Solid vis...
openbookqa
obqa_02_00753
The purpose of bird feathers, especially down, is to
[ "retain body temps", "contain moisture", "move air around", "help with flight" ]
A
down feathers are a thermal energy insulator
sciq
sciq_01_08911
What is the natural selection that favors altruistic behavior by enhancing reproductive success of relatives known as?
[ "diversifying selection", "directional selection", "kin selection", "stabilizing selection" ]
C
openbookqa
obqa_02_01955
Sunlight is important for
[ "communities", "pollution", "space", "bats" ]
A
the sun transfers solar energy from itself to the Earth through sunlight
sciq
sciq_01_10752
What does the concentration of a solution represent?
[ "the darkness", "percentage of solute", "spending of solute", "the percentage of contaminates" ]
B
The concentration of a solution represents the percentage of the solution that is the solute. You can calculate the concentration of a solution using this formula:.
ARC-Challenge
arc_04_02567
What part of the water cycle takes place when water from clouds falls back to Earth?
[ "transpiration", "evaporation", "condensation", "precipitation" ]
D
null
sciq
sciq_01_00331
Unlike prokaryotic cells, dna and rna synthesis in eukaryotic cells occurs in a separate compartment from synthesis of what?
[ "acids", "protein", "membrane", "phenotype" ]
B
In eukaryotic cells, DNA and RNA synthesis occur in a separate compartment from protein synthesis. In prokaryotic cells, both processes occur together. What advantages might there be to separating the processes? What advantages might there be to having them occur together? The size of the genome in one of the most well...
sciq
sciq_01_06410
What term refers to something supplied by nature that helps support life?
[ "natural resource", "simple resource", "existing resource", "free resource" ]
A
A natural resource is something supplied by nature that helps support life. When you think of natural resources, you may think of fossil fuels, like the coal in the coal field pictured in Figure below . However, sunlight, wind, soil, and living things are also important natural resources.
medmcqa
medmcqa_05_03680
Schwartze sign seen in:
[ "Glomus jugulare", "Otosclerosis", "Meniere's disease", "Acoustic neuroma" ]
B
(b) Otosclerosis(Ref. Cummings, 6th ed., 2213)10% cases of otosclerosis are active. In these the active division is taking place on the medial wall of middle ear leading to increased vascularity. This appears pinkish through the intact tympanic membrane leading to flamingo pink appearance of TM also known as Schwartze ...
ARC-Challenge
arc_04_02290
What part of an atom orbits around the center of the atom?
[ "proton", "nucleus", "neutron", "electron" ]
D
null
openbookqa
obqa_02_04163
What environment has low rainfall?
[ "tropics", "sandy zone", "sandbox", "forests" ]
B
a desert environment has low rainfall
sciq
sciq_01_00935
What influences the types of plants and animals that inhabit a specific biome?
[ "carbon", "climate", "cooling", "Water" ]
B
Climate influences the types of plants and animals that inhabit a specific biome.
ARC-Easy
arc_04_00728
There are several different types of rock. Each type of rock is formed under different conditions. How are sedimentary rocks, such as shale and sandstone, formed?
[ "Particles are heated by the Sun.", "Particles are melted together by magma.", "Particles are compressed into layers.", "Particles are changed into liquids." ]
C
null
medmcqa
medmcqa_05_00530
Use of FAST?
[ "To detect fluid in pericardial and peritoneal sacs", "Pyoperitoneum", "Intestinal obstruction", "Pancreatitis" ]
A
Ans. is 'a' i.e., To detect fluid in pericardial and peritoneal sacs o FASTFocused Assessment of Sonographic examination of Trauma patient is a rapid diagnostic examination to assess patients with potential thoraco abdominal injuries.It sequentially survavs for pressence of blood in pericardial sac and dependent abdomi...
sciq
sciq_01_06194
Unlike other tetrapod vertebrates (reptiles, birds, and mammals), amphibians do not produce what type of eggs?
[ "epithelial", "prokaryotic", "umbilical", "amniotic" ]
D
Unlike other tetrapod vertebrates (reptiles, birds, and mammals), amphibians do not produce amniotic eggs. Therefore, they must lay their eggs in water so they won’t dry out. Their eggs are usually covered in a jelly-like substance, like the frog eggs shown in Figure below . The jelly helps keep the eggs moist and offe...
sciq
sciq_01_05576
Power in electricity is the voltage multiplied by what?
[ "wattage", "power", "the current", "amperes" ]
C
; Power in electricity is the voltage multiplied by the current.
ARC-Easy
arc_04_00844
When the wax from a candle drips, the wax has reached
[ "its boiling point.", "its melting point.", "a chemical change.", "a physical change." ]
B
null
sciq
sciq_01_10484
What is the name for the nonliving parts of ecosystems?
[ "Dead factors", "abiotic factors", "nucleic factors", "diverse factors" ]
B
Abiotic factors are the nonliving parts of ecosystems. They include air, sunlight, soil, water, and minerals. These are all things that are needed for life. They determine which living things — and how many of them — an ecosystem can support. Figure below shows an ecosystem and its abiotic factors.
math_qa
mathqa_03_01886
a train 700 m long can cross an electric pole in 20 sec and then find the speed of the train ?
[ "117 kmph", "178 kmph", "126 kmph", "118 kmph" ]
C
"length = speed * time speed = l / t s = 700 / 20 s = 35 m / sec speed = 35 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 126 kmph answer : c"
sciq
sciq_01_07762
What kind of surface temperature is found on venus?
[ "a little hot", "cold", "extremely high", "cool" ]
C
Venus is the second planet from the Sun and the closest planet to Earth, in distance and in size. Venus has a very thick, corrosive atmosphere, and the surface temperature is extremely high.
medmcqa
medmcqa_05_02626
La facies sympathique" is a condition seen in cases of
[ "Hanging", "Strangulation", "Myocardial insufficiency", "Railway accidents" ]
A
In hanging cases there will be ligature knot in the neck. If ligature knot presses on cervical sympathetic nerves, the eye on the same side may remain open with its pupil dilated which is known as &;le facie sympathique&;. It indicates antemoem hanging Ref: The synopsis of forensic medicine & Toxicology 28th edition pg...
ARC-Easy
arc_04_01792
Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time?
[ "50 g", "75 g", "100 g", "125 g" ]
C
null
math_qa
mathqa_03_01212
a bus starts from city x . the number of women in the bus is half of the number of men . in city y , 16 men leave the bus and 8 women enter . now , number of men and women is equal . in the beginning , how many passengers entered the bus ?
[ "15", "30", "36", "72" ]
D
explanation : originally , let number of women = x . then , number of men = 2 x . so , in city y , we have : ( 2 x - 16 ) = ( x + 8 ) or x = 24 . therefore total number of passengers in the beginning = ( x + 2 x ) = 3 x = 72 . answer : d
sciq
sciq_01_03299
How many valence electrons does a sodium atom have ?
[ "one", "two", "three", "six" ]
A
A: Any element in group 1 has just one valence electron. Examples include hydrogen (H), lithium (Li), and sodium (Na). Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon (Ne), argon (Ar), and krypton (Kr). Oxygen, like all the other el...
openbookqa
obqa_02_00045
The only stage of the water cycle process that is nonexistent is
[ "evaporation", "evaluation", "precipitation", "condensation" ]
B
evaporation is a stage in the water cycle process
sciq
sciq_01_07052
Scientists who find and study fossils are called what?
[ "geologists", "biologists", "anthropologist", "paleontologists" ]
D
Fossils are a window into the past. They provide clear evidence that evolution has occurred. Scientists who find and study fossils are called paleontologists . How do they use fossils to understand the past? Consider the example of the horse, shown in Figure below . The fossil record shows how the horse evolved.
sciq
sciq_01_00291
In this type of reaction, an element replaces another element in a compound, and the element is in any state of matter but is not an ion?
[ "double-replacement reaction", "single-replacement reaction", "polar reaction", "replication reaction" ]
B
A single-replacement reaction is one in which an element replaces another element in a compound. An element is in either the solid, liquid, or gas state and is not an ion. The example below shows the reaction of solid magnesium metal with aqueous silver nitrate to form aqueous magnesium nitrate and silver metal.
math_qa
mathqa_03_02315
in a simultaneous throw of a pair of dice , find the probability of getting a total more than 11
[ "11 / 25", "7 / 12", "5 / 13", "5 / 12" ]
A
total number of cases = 10 * 10 = 100 favourable cases = [ ( 2,10 ) , ( 3,9 ) , ( 3,10 ) , ( 4,8 ) , ( 4,9 ) , ( 4,10 ) , ( 5,7 ) , ( 5,8 ) , ( 5,9 ) , ( 5,10 ) , ( 6,6 ) , ( 6,7 ) , ( 6,8 ) , ( 6,9 ) , ( 6,10 ) , ( 7,5 ) , ( 7,6 ) , ( 7,7 ) , ( 7,8 ) , ( 7,9 ) , ( 7,10 ) , ( 8,4 ) , ( 8,5 ) , ( 8,6 ) , ( 8,7 ) , ( 8,8...
ARC-Challenge
arc_04_03040
Which of the following statements best describes one way that the Moon is different from Earth?
[ "The Moon is not solid.", "The Moon has no gravity.", "The Moon has almost no atmosphere.", "The Moon receives almost no solar light." ]
C
null
medmcqa
medmcqa_05_02284
Sapropterin is used in the treatment of
[ "Phenylketonuria", "Hereditary Fructose Intolerance", "Galactosemia", "Gaucher's disease" ]
A
Sapropterin, a synthetic form of tetrahydrobiopterin, which acts as a cofactor in patients with residual PAH activity, is approved by FDA to reduce phenylalanine levels in PKU. Galactosemia- Avoid milk & milk products. Hereditary Fructose Intolerance- Complete elimination of sucrose & fructose drom diet. Gaucher's dise...
openbookqa
obqa_02_01915
Evaporation of a pond can happen and will lead to what?
[ "a pond with more fish", "a pond of less size", "water level fluctuations constantly", "frogs in the pond" ]
B
if a body of water loses all water then that body of water does not exist any more
sciq
sciq_01_03396
What part of the sweet potato store sugar from photosynthesis as starch?
[ "roots", "plants", "shrubs", "skin" ]
A
Secondary growth of sweet potato roots provides more space to store food. Roots store sugar from photosynthesis as starch. What other starchy roots do people eat?.
openbookqa
obqa_02_02692
Which is likely to have to highest kinetic energy?
[ "a beach ball", "a tossed balloon", "a sleeping person", "a thrown racquetballl" ]
D
as an object moves , the kinetic energy of that object will increase
openbookqa
obqa_02_02642
Leaving your garage door open during a storm poses the risk of having animals going in due to them needing what
[ "some shoes", "death", "some shelter", "some candy" ]
C
shelter is used for protection by animals against weather
math_qa
mathqa_03_02964
the output of a factory is increased by 10 % to keep up with rising demand . to handle the holiday rush , this new output is increased by 60 % . by approximately what percent would the output of the factory now have to be decreased in order to restore the original output ?
[ "20 %", "24 %", "30 %", "43 %" ]
D
"take it as original output = 100 . to meet demand increase by 10 % , then output = 110 . to meet holiday demand , new output increase by 60 % then output equals 176 to restore new holidy demand output to original 100 . final - initial / final * 100 = 76 / 176 * 100 = 8 / 33 * 100 = 43 % approxiamately . option d is co...
openbookqa
obqa_02_04038
Which is a producer?
[ "cloudy mornings", "vinyl", "team Alicia", "strawberries" ]
D
a producer is a source of sugar in an ecosystem
ARC-Easy
arc_04_00884
Sharpening a pencil and tearing paper are examples of physical changes. Which statement describes why these are physical changes?
[ "There is a change in how the objects are used.", "There is a change in the appearance of the objects.", "There is a change in the materials from which the objects are made.", "There is a change in both the appearance of the objects and the materials from which they are made." ]
B
null
math_qa
mathqa_03_01813
p and q are the only two applicants qualified for a short - term research project that pays 360 dollars in total . candidate p has more experience and , if hired , would be paid 50 percent more per hour than candidate q would be paid . candidate q , if hired , would require 10 hours more than candidate p to do the job ...
[ "$ 3", "$ 6", "$ 9", "$ 12" ]
B
"let q ' s hourly wage be x , then p ' s hourly wage is 1.5 x let t be the number of hours that q needs , then p needs t - 10 hours to do the job . since they both are paid an equal total amount of $ 360 : x * t = 1.5 x * ( t - 10 ) t = 30 hours and q ' s hourly wage is 360 / 30 = $ 12 p ' s hourly wage is 360 / ( t - ...
sciq
sciq_01_10297
In a fullerene, what atoms are bonded to three other atoms in a soccer ball pattern?
[ "hydrogen", "oxygen", "positive", "carbon" ]
D
In a fullerene, carbon atoms are bonded to three other atoms in a soccer ball pattern. The bonds are weak, so fullerenes can dissolve and form solutions.
sciq
sciq_01_05074
Ice cubes in cola cause the cola to lose what?
[ "gravity", "kinetic energy", "mechanical energy", "thermal energy" ]
D
Simon Cousins. Ice cubes in cola cause the cola to lose thermal energy . CC BY 2.0.
ARC-Easy
arc_04_01520
Which of the following is believed to be one cause of global warming?
[ "atmospheric rise of carbon dioxide", "hot air from air conditioner exhaust", "methane gas escaping from landfills", "body heat generated by overpopulation" ]
A
null
sciq
sciq_01_08457
Which metalloids are found in the nitrogen group?
[ "polonium and antimony", "sulfur and polonium", "selenium and antimony", "arsenic and antimony" ]
D
Group 15 is called the nitrogen group. The metalloids in this group are arsenic and antimony. Group 15 also contains two nonmetals and one metal.
sciq
sciq_01_10437
What kind of beneficial relationships with other organisms are common in the plant kingdom?
[ "Host", "symbiotic", "mutualistic", "autotrophic" ]
C
sciq
sciq_01_00434
In physics, what is defined as the average kinetic energy of the particles of matter?
[ "density", "friction", "temperature", "magnetism" ]
C
No doubt you already have a good idea of what temperature is. You might say that it’s how warm or cool something feels. In physics, temperature is defined as the average kinetic energy of the particles of matter. When particles of matter move more quickly, they have more kinetic energy, so their temperature is higher. ...
sciq
sciq_01_00162
What helps the plasma membrane keep its shape?
[ "molecules of carbohydrates", "molecules of oxygen", "cytoplasm", "molecules of cholesterol" ]
D
The plasma membrane also contains other molecules, primarily other lipids and proteins. The green molecules in Figure above , for example, are the lipid cholesterol. Molecules of cholesterol help the plasma membrane keep its shape. Many of the proteins in the plasma membrane assist other substances in crossing the memb...
sciq
sciq_01_06228
What type of reactions are chemical reactions that release energy?
[ "ozonic reactions", "biochemical reactions", "sulfuric reactions", "exothermic reactions" ]
D
Chemical reactions that release energy are called exothermic reactions . An example is the combustion of methane described at the beginning of this lesson. In organisms, exothermic reactions are called catabolic reactions . Catabolic reactions break down molecules into smaller units. An example is a decomposition react...
sciq
sciq_01_02935
What property of certain states of matter can be given in units of millimeters of mercury?
[ "gravity", "pressure", "solvency", "velocity" ]
B
Pressure is given in units of millimeters of mercury. We can either convert this to atmospheres or use the value of the ideal gas constant that includes the mmHg unit. We will take the second option. Substituting into the ideal gas law,.
medmcqa
medmcqa_05_03262
The treatment of a patient with myocardial infarction is thrombolytic therapy, if the patient presents within hours of chest pain:
[ "6 hours", "12 hours", "18 hours", "24 hours" ]
D
Ans. d. 24 hours
ARC-Easy
arc_04_00584
Which system absorbs and carries food from the digestive system to the rest of the body?
[ "nervous system", "muscular system", "circulatory system", "respiratory system" ]
C
null
sciq
sciq_01_00534
How does the heart transport blood?
[ "muscles", "nerves", "blood pellets", "blood vessels" ]
D
A screw is an inclined plane wrapped around a cylinder. When on a screw, inclined planes are called threads, which can be seen in the image above. The mechanical advantage of a screw increases with the density of the threads. The calculations to determine the IMA for a screw involve the circumference of the head of the...
sciq
sciq_01_09088
What is formed when sperm mixes with secretions from the various other glands of the reproductive system?
[ "urine", "testosterone", "semen", "hormone" ]
C
Sperm leave the epididymis through the vas deferens. As they travel through the vas deferens, they pass by the prostate and other glands. The sperm mix with secretions from these glands, forming semen. Semen travels through the urethra and leaves the body through the penis. A teaspoon of semen may contain as many as ha...
medmcqa
medmcqa_05_04079
Which of the following inhibits transcription ?
[ "Cyclosporine", "Rapamycin", "5-Flurouracil", "Cyclophosphamide" ]
A
Ans. is 'a' i.e., Cyclosporine Cyclosporine inhibits transcription by binding to a protein called cyclophilin. This complex then inactivates calcineurin. (Calcineurin is a protein which is responsible for the transcription of cytokine gene)
openbookqa
obqa_02_04653
The more bees a dandelion entices the more it
[ "gets written about", "succeeds in reproducing", "becomes a rose", "becomes wine" ]
B
as the number of pollinators attracted to a flower increases , the ability of that flower to reproduce will increase
math_qa
mathqa_03_03455
two equally sized jugs full of water are each emptied into two separate unequally sized empty jugs , x and y . now , jug x is 1 / 4 full , while jug y is 2 / 3 full . if water is poured from jug x into jug y until jug y is filled , what fraction of jug x then contains water ?
[ "0", "1 / 15", "2 / 15", "1 / 8" ]
D
"suppose the water in each jug is l liters cx x ( 1 / 4 ) = l cx = 4 l liters cx is capacity of x cy x ( 2 / 3 ) = l cy = 3 l / 2 liters cy is capacity of y now , y is 3 l / 2 - l empty = l / 2 empty so , we can put only l / 2 water in jug y from jug x jug x ' s remaining water = l - l / 2 = l / 2 fraction of x which c...
sciq
sciq_01_00337
What are flagellate protozoa that cause giardiasis?
[ "diatoms", "giardia", "plankton", "fungus" ]
B
Giardia are flagellate protozoa that cause giardiasis . The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients. They may also cause d...
sciq
sciq_01_03827
What is produced when a base is dissolved in water?
[ "hydroxide ions", "alkaline ions", "ingredient ions", "synthesis ions" ]
A
Acids are ionic compounds that produce positively charged hydrogen ions (H + ) when dissolved in water. Acids taste sour and react with metals. Bases are ionic compounds that produce negatively charged hydroxide ions (OH - ) when dissolved in water. Bases taste bitter and do not react with metals. Examples of acids are...
medmcqa
medmcqa_05_04376
Marker for NK cell activity is-
[ "CD3", "CD4", "CD56", "CDI9" ]
C
T cell markers are unidigits (Eg: CD3) B cell markers are double digits (Eg: CD20) Natural Killer (NK) cell- 10-15% of peripheral blood lymphocyte Larger than small lymphocyte and contain azurophilic granules Large granular lymphocyte First line of defence against tumour cells, viral infected cells CD16 and CD56 positi...
medmcqa
medmcqa_05_02556
Which type of senile cataract is notorious for glaucoma formation –
[ "Incipient cataract", "Hypermature morgagnian cataract", "Intumescent cataract", "Nuclear cataract" ]
C
Both intumescent cataract and hypermature morgagnion cataract can cause glaucoma, although by different mechanism. Intumescent cataract → causes phacomorphic glaucoma due to swelling of lens. Hypermature morgagnion cataract → Phacolytic glaucoma due to leakage of soluble lens protein. However, phacomorphic glaucoma...
medmcqa
medmcqa_05_04558
Which among the following used as a pre-anaesthetic medication causes the longest amnesia?
[ "Diazepam", "Lorazepam", "Midazolam", "Flunitrazepam" ]
B
The longest amnesia is produced by lorazepam although half-life of lorazepam (15 hours) is shoer than diazepam (36 hours) and this is probably because of its strong receptor binding potential.
sciq
sciq_01_02204
What do you call something that controls the uptake of water or another substance in the environment, in order to maintain constant internal conditions?
[ "sporozoans", "osmoregulators", "osmoconformers", "protozoans" ]
B
math_qa
mathqa_03_02884
how many of the positive factors of 26 , 16 and how many common factors are there in numbers ?
[ "1", "2", "3", "4" ]
B
"factors of 26 - 1 , 2 , 13 and 26 factors of 16 - 1 , 2 , 4 , 8 and 16 comparing both , we have three common factors of 45,16 - 2 answer : b"
sciq
sciq_01_06299
Bones consist of four types of tissue, compact bone, spongy bone, bone marrow, and what?
[ "plasma", "epithelium", "collagen", "periosteum" ]
D
Bones consist of four different types of tissue: periosteum, compact bone, spongy bone, and bone marrow. Ossification gradually changes the cartilage skeleton of the fetus to the bony skeleton of the adult.