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7.76k
ARC-Easy
arc_04_01968
The most effective way to show a change happening over time is to display your results using a
[ "line graph.", "Venn diagram.", "pie chart.", "flow chart." ]
A
null
openbookqa
obqa_02_00886
As water gets warmer
[ "it can cause hypothermia", "it will stick to metal surfaces", "it can freeze solids", "it can turn ice into a puddle faster" ]
D
as temperature increases , the ability of that liquid to dissolve solids will increase
ARC-Easy
arc_04_01016
Which substance is usually found in nature as a liquid, solid, and gas?
[ "water", "rock", "metal", "glass" ]
A
null
openbookqa
obqa_02_03810
two females are incapable of
[ "conjuring kin", "talk", "dance", "jog together" ]
A
two females can not usually reproduce with each other
medmcqa
medmcqa_05_02946
Aliskiren is
[ "Aldosteron antagonists", "Renin/Angiotensin antagonist", "Bradykinin analogue", "Prostacyclin analogue" ]
B
(Renin/ Angiotensin antagonist): (508.562- KDT 7th edition)ALISKIREN is a nonpeptide which binds selectively to the catalytic site of renin and competitively blocks the access of angiotensinogen to this site - Ang I is not produced and the chain of renin angiotension system is interrupted while the concentration of ren...
openbookqa
obqa_02_01990
If you are feeling cold, its a good idea to go for a run or even a brisk walk because as you move, your energy is turned into what?
[ "Dogs", "warmth", "icicles", "money" ]
B
moving changes stored energy into motion and heat
sciq
sciq_01_05068
Some plants open their leaves during the day to collect what?
[ "sunlight", "energy", "moisture", "precipitation" ]
A
Plants also detect and respond to the daily cycle of light and darkness. For example, some plants open their leaves during the day to collect sunlight and then close their leaves at night to prevent water loss.
sciq
sciq_01_04897
The prostate is formed of both muscular and which other tissues?
[ "nonvascular tissue", "cartilage tissue", "scar", "glandular" ]
D
Prostate Gland As shown in Figure 27.2, the centrally located prostate gland sits anterior to the rectum at the base of the bladder surrounding the prostatic urethra (the portion of the urethra that runs within the prostate). About the size of a walnut, the prostate is formed of both muscular and glandular tissues. It ...
sciq
sciq_01_10351
What element enters the body when an organism breathes?
[ "methane", "oxygen", "helium", "water" ]
B
What goes into the cell? Oxygen and glucose are both reactants of cellular respiration. Oxygen enters the body when an organism breathes. Glucose enters the body when an organism eats.
sciq
sciq_01_07947
"cardio" has become slang for what type of exercise that raises your heart rate for an extended amount of time?
[ "anaerobic", "kinetic", "aerobic", "cyclical" ]
C
"Cardio" has become slang for aerobic exercise that raises your heart rate for an extended amount of time. Cardio can include biking, running, or swimming. Can you guess one of the main organs of the cardiovascular system? Yes, your heart.
medmcqa
medmcqa_05_00964
Indirect Coomb's test detects:
[ "Antibodies attached to RBC Surface", "Antibodies in the serum", "Antigens attached to RBC Surface", "Antigens in the serum" ]
B
Answer is B (Antibodies in the serum) Indirect Coomb's test detects IgG antibodies in the serum (e.g. Anti-D Antibodies). Direct Coomb's test detects IgG Antibodies (or complements) attached to the surface of RBCs. Direct Antihuman Globulin Test Detects RBCs sensitized with IgG or Complements(C3B or C3d) (DAT; Coomb's;...
math_qa
mathqa_03_01858
the difference between simple interest and compound interest on rs . 1200 for one year at 10 % per annum reckoned half - yearly is :
[ "rs . 2.50", "rs . 3", "rs . 3.75", "rs . 4" ]
B
s . i = ( 1000 * 10 * 4 ) / 100 = rs . 400 c . i = 1200 * 1 + 5 / 100 ) 2 – 1200 = 123 . difference = rs . ( 123 - 120 ) = rs . 3 answer : b
sciq
sciq_01_02049
Triceps and biceps muscles in the upper arm are an example of what type of muscle relationship?
[ "symbiotic", "competitive", "opposing", "synchronized" ]
C
Triceps and biceps muscles in the upper arm are opposing muscles.
sciq
sciq_01_00603
What tissue do clubmosses have that mosses do not?
[ "chorophyll", "nuclei", "dioxide tissue", "vascular tissue" ]
D
Clubmosses can resemble mosses; however, clubmosses have vascular tissue, while mosses do not.
openbookqa
obqa_02_00709
A car is stuck in a ditch, and requires the passengers of the vehicle to get out and push it back onto the road. Two of the three passengers push the car, and they struggle to gain any ground, but when the third passenger helps them
[ "the car struggles to move", "the car gains ground rapidly", "the car is stuck", "the car is too heavy to push" ]
B
as force exerted on an object increases , distance travelled will increase
ARC-Easy
arc_04_00940
Onions can reproduce from bulbs. One parent bulb generates daughter bulbs with duplicate genetic information. Which is the most likely advantage of this kind of reproduction?
[ "Population size remains constant.", "Beneficial mutations are inevitable.", "Genetic variation is maximized.", "Large quantities of individuals can be produced rapidly." ]
D
null
sciq
sciq_01_01027
The largest absorption of heat comes during the vaporization of what?
[ "magma", "liquid water", "carbon dioxide", "ice" ]
B
The total heat absorbed as the ice at -30°C is heated to steam at 140°C is 113.4 kJ. The largest absorption of heat comes during the vaporization of the liquid water.
openbookqa
obqa_02_00367
Thermal conduction occurs when
[ "I leave a log poker in the fire", "I sit down on a bed", "I wave a flag in the air", "I have a party" ]
A
when a cooler object touches a warmer object , thermal conduction occurs
medmcqa
medmcqa_05_04293
PFK-I inhibitor ?
[ "AMP", "Citrate", "Glucose 6 phosphate", "Insulin" ]
B
Ans. is 'b' i.e., Citrate
sciq
sciq_01_01841
What is the term for the height of the wave?
[ "magnitude", "frequency", "amplitude", "vibration" ]
C
(A) A wave consists of alternation crests and troughs. The wavelength (λ) is defined as the distance between any two consecutive identical points on the waveform. The amplitude is the height of the wave. (B) A wave with a short wavelength (top) has a high frequency because more waves pass a given point in a certain amo...
math_qa
mathqa_03_04982
5 + 3 + 2 = 151022 9 + 2 + 4 = 183652 8 + 6 + 3 = 482466 5 + 4 + 5 = 202541 then ; 7 + 2 + 5 = ?
[ "253547", "143681", "143547", "147614" ]
C
c 143547
math_qa
mathqa_03_01646
a train passes a man standing on a platform in 8 seconds and also crosses the platform which is 270 metres long in 20 seconds . the length of the train ( in metres ) is :
[ "180", "176", "175", "96" ]
A
"explanation : let the length of train be l m . acc . to question ( 270 + l ) / 20 = l / 8 2160 + 8 l = 20 l l = 2160 / 12 = 180 m answer a"
medmcqa
medmcqa_05_02200
Back action clasp is a modification of:
[ "Ring clasp", "Embrasure clasp", "Onlay clasp", "Hairpin clasp" ]
A
Back-action clasp It is a modification of the ring clasp. Here the minor connector is connected to the end of the clasp arm and the occlusal rest is left unsupported. Disadvantages: Lack of support to the occlusal rest reduces its function. It has both biological and mechanical unsound principles.
sciq
sciq_01_07912
Science is the process of knowing about the natural universe through observation and this?
[ "variation", "Test", "experimental", "experiment" ]
D
Chemistry is a branch of science. Although science itself is difficult to define exactly, the following definition can serve as starting point. Science is the process of knowing about the natural universe through observation and experiment. Science is not the only process of knowing (e. , the ancient Greeks simply sat ...
openbookqa
obqa_02_02007
In the photosynthesis process what has the role of raw material?
[ "water", "CO2", "wind", "dirt" ]
B
In the photosynthesis process carbon dioxide has the role of raw material
sciq
sciq_01_11548
What drives the turbine in a thermonuclear reactor?
[ "wind energy", "heated water or steam", "magnets", "heated oil" ]
B
Scientists are searching for ways to create controlled nuclear fusion reactions on Earth. Their goal is develop nuclear fusion power plants, where the energy from fusion of hydrogen nuclei can be converted to electricity. You can see how this might work in the Figure below . In the thermonuclear reactor, radiation from...
openbookqa
obqa_02_00293
Vegetables provide a lot of nutrients for
[ "cats", "dogs", "humans", "snakes" ]
C
an animal needs to eat food for nutrients
sciq
sciq_01_06533
Arguably the most important ingredient in saliva for digestion is a type of what, which initiates the breakdown of carbohydrates?
[ "genes", "amino", "enzyme", "fatty" ]
C
Saliva Saliva is essentially (95.5 percent) water. The remaining 4.5 percent is a complex mixture of ions, glycoproteins, enzymes, growth factors, and waste products. Perhaps the most important ingredient in salvia from the perspective of digestion is the enzyme salivary amylase, which initiates the breakdown of carboh...
ARC-Challenge
arc_04_03182
Runoff from nearby farms can deposit excess amounts of nutrients into bodies of water such as lakes. This abiotic process will most likely cause a decrease in which aspect of a lake?
[ "the depth of the water", "the oxygen levels for fish", "the amount of minerals in the water", "the accumulation of organic matter" ]
B
null
ARC-Challenge
arc_04_02172
Lactose intolerance is a condition of the digestive system in which an individual has an inability to digest lactose, the sugar found in milk. An individual affected with lactose intolerance does not produce enough of the enzyme lactase, which is needed to break down lactose. If more adults than children are diagnosed ...
[ "The production of lactase decreases over time.", "The digestion of food breaks down lactase.", "Lactose intolerance is an allergic reaction.", "Lactose intolerance is contagious." ]
A
null
medmcqa
medmcqa_05_02731
5 minutes before recovery from anesthesia, nitrous oxide is removed and 100% oxygen is administered to the patient to prevent -
[ "Diffusion Hypoxia", "Second gas effect", "Hyperoxia", "Bronchospasm" ]
A
Ans. is' a' i.e., Diffusion hypoxia Diffusion hypoxiao In initial part of induction, diffusion gradient from alveoli to blood is high and larger quantity of anaesthetic is entering blood. If the inhaled Concentration of anaesthetic is high (eg N2O), Substantial loss of alveolar gas volume will occur and it creates nega...
sciq
sciq_01_08921
What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes?
[ "cold age", "ice age", "freezing point", "cooling era" ]
B
But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to lower latitudes. Scientists think that ice ages occurred at least six times over the last billion years alone. How do scientists learn about Earth’s past climates?.
sciq
sciq_01_10268
What effect causes an object to appear to have a change of motion?
[ "momentum effect", "coriolis effect", "resonant effect", "centrifugal effect" ]
B
Coriolis is an effect rather than a force. Coriolis does not force a motion. An object appears to have a change of motion due to the Coriolis effect.
sciq
sciq_01_09953
What is the name of the disorder of the arteries in which cholesterol and other materials are deposited on the interior of the arterial wall?
[ "paralysis", "arthritis", "anemia", "atherosclerosis" ]
D
Cholesterol has been implicated in heart disease for decades. Atherosclerosis is a disorder of the arteries in which cholesterol and other materials are deposited on the interior of the arterial wall. These deposits lead to the formation of plaques that can restrict or even block the flow of blood through these blood v...
sciq
sciq_01_08607
Internal functions are coordinated and regulated so that the internal environment of a living thing is relatively constant, referred to as what?
[ "homogenesis", "stabilizer", "homeostasis", "hypothesis" ]
C
Biology - The Life Science • Internal functions are coordinated and regulated so that the internal environment of a living thing is relatively constant, referred to as homeostasis10 . Living things are organized in the microscopic level from atoms up to cells11 . Atoms are arranged into molecules, then into macromolecu...
sciq
sciq_01_01351
When thinking of the rate at which two gases mix, it is inverse proportional to the density of what?
[ "the container", "dioxide", "matter", "gas" ]
D
The rate at which two gases mix. Inversely proportional to the density of the gas.
math_qa
mathqa_03_01555
a wooden box of dimensions 8 m x 7 m x 6 m is to carry rectangularboxes of dimensions 2 cm x 7 cm x 3 cm . the maximum number ofboxes that can be carried in the wooden box , is
[ "8000000", "1000000", "7500000", "1200000" ]
A
explanation : number = ( 800 * 700 * 600 ) / 2 * 7 * 3 = 8000000 answer : a
sciq
sciq_01_01623
What forms when atoms share or transfer valence electrons?
[ "levels", "replicas", "bonds", "fusion" ]
C
A chemical bond is a force of attraction between atoms or ions. Bonds form when atoms share or transfer valence electrons. Valence electrons are the electrons in the outer energy level of an atom that may be involved in chemical interactions. Valence electrons are the basis of all chemical bonds. For a video introducti...
sciq
sciq_01_04550
Oxygen has the second highest electronegativity of any element; consequently, it prefers to share or accept electrons from other elements. only with fluorine does oxygen form compounds in this?
[ "liquid oxidation states", "positive oxidation states", "chemical oxidation states", "negative Oxidation States" ]
B
Oxygen has the second highest electronegativity of any element; consequently, it prefers to share or accept electrons from other elements. Only with fluorine does oxygen form compounds in positive oxidation states.
sciq
sciq_01_01832
What type of waves travel through the body of a planet?
[ "gas waves", "vacuum waves", "body waves", "energy waves" ]
C
Body waves travel through the body of a planet. Surface waves travel along the surface.
sciq
sciq_01_05018
What type of gas levels in the atmosphere are increasing?
[ "carbonate gas", "helium gas", "hydrogen gas", "greenhouse gas" ]
D
Greenhouse gas levels in the atmosphere are increasing. Global temperatures are increasing.
sciq
sciq_01_08472
What source of ocean pollution kills animals by coating them?
[ "oil spill", "grain spill", "chemical spill", "plants spill" ]
A
Oil spills are another source of ocean pollution. To get at oil buried beneath the seafloor, oil rigs are built in the oceans. These rigs pump oil from beneath the ocean floor. Huge ocean tankers carry oil around the world. If something goes wrong with a rig on a tanker, millions of barrels of oil may end up in the wat...
sciq
sciq_01_08321
What carbohydrate from fruit juices is a gel-forming substance important in jelly making?
[ "potassium", "gelatin", "pectin", "cellulose" ]
C
Pectin, a carbohydrate from fruit juices, is a gel-forming substance important in jelly making. Silica gel, a colloidal dispersion of hydrated silicon dioxide, is formed when dilute hydrochloric acid is added to a dilute solution of sodium silicate. Canned Heat is a gel made by mixing alcohol and a saturated aqueous so...
medmcqa
medmcqa_05_02956
Most common cause of isolated splenic metastasis is:
[ "Carcinoma pancreas", "Carcinoma stomach", "Carcinoma ovary", "Carcinoma cervix" ]
C
Causes of isolated splenic metastasis: Carcinoma Ovary (27%) > Colorectal carcinoma (26%) > Uterine cancer (17%) MC primary for metastasis of spleen: Malignant melanoma (30-50%) > Ca Breast (21%) > Ca lung (18%)
sciq
sciq_01_06049
What two types of juices help digestion within the small intestine?
[ "chyme and phloem", "bile and lymph", "intestinal and pancreatic", "amniotic fluid, bile" ]
C
Chemical Digestion in the Small Intestine The digestion of proteins and carbohydrates, which partially occurs in the stomach, is completed in the small intestine with the aid of intestinal and pancreatic juices. Lipids arrive in the intestine largely undigested, so much of the focus here is on lipid digestion, which is...
math_qa
mathqa_03_04596
the present worth of a certain bill due sometime hence is rs . 800 and the true discount is rs . 36 . the banker ’ s discount is
[ "rs . 34.38", "rs . 38.98", "rs . 37", "rs . 37.62" ]
D
"solution b . g = [ ( t . d ) ² / p . w ] = rs . ( 36 x 36 / 800 ) = rs . 1.62 b . d given , t . d = 36 = ( t . d + b . g ) = rs . ( 36 + 1.62 ) = rs . 37.62 . answer d"
medmcqa
medmcqa_05_00046
A 50 years old female with 50 kg body weight suffered from burns after pressure cooker blast, involving 45% of total body surface area. How much fluid should be given in first 8 hours?
[ "4 litres", "5 litres", "6 litres", "4.5 litres" ]
D
Resuscitation formulas Formula Crystalloid volume Colloid Volume Free water Parkland 4 mL / Kg per % TBSA None None Brooke 1.5 mL/Kg per % TBSA burn 0.5 mL/Kg per % TBSA burn 2.0 L Galveston (Pediatric) 5000 mL/m2 burned area + 1500 mL/m2 total area None None Parkland Formula: Calculates disease fluid to be replaced in...
medmcqa
medmcqa_05_04797
Population is 10,000, of these 20% having disease. The screening test has 95% sensitivity and 80% specificity. PPV is -
[ "54.30%", "98.50%", "47.50%", "20%" ]
A
In this question Sensitivity = 95% Specificity = 80%
math_qa
mathqa_03_02631
when throwing 2 dices , and looking at the sum of numbers on the dices - what is the probability to have a sum which is smaller than 5 ?
[ "1 / 9", "1 / 6", "1 / 2", "1 / 3" ]
B
a dice is composed of 6 numbers - 12 , 34 , 56 . when trowing 2 dices - there are 36 options ( 6 x 6 = 36 ) . if we want the sum of two dices to be < 5 there are those options : ( 11 ) , ( 12 ) , ( 21 ) , ( 13 ) , ( 31 ) , ( 22 ) - total of 6 options . therefore - the probability to have a sum which is smaller than 5 i...
sciq
sciq_01_01435
The most common two-lens telescope, like the simple microscope, uses lenses of what shape?
[ "concave", "cylindrical", "angular", "convex" ]
D
The most common two-lens telescope, like the simple microscope, uses two convex lenses and is shown in Figure 26.23(b). The object is so far away from the telescope that it is essentially at infinity compared with the focal lengths of the lenses ( d o ≈ ∞ ). The first image is thus produced at.
sciq
sciq_01_08545
Which muscle is broad, triangular and located on the inferior part of the back where it inserts into the aponeurosis?
[ "latissimus dorsi", "bronchus dorsi", "dorsolateral dorsi", "Synergistic dorsi" ]
A
Muscles That Move the Humerus Similar to the muscles that position the pectoral girdle, muscles that cross the shoulder joint and move the humerus bone of the arm include both axial and scapular muscles (Figure 11.23 and Figure 11.24). The two axial muscles are the pectoralis major and the latissimus dorsi. The pectora...
openbookqa
obqa_02_03065
Which would likely be the biggest factor in climate change?
[ "bees", "glaciers", "bicycles", "factories" ]
D
carbon dioxide concentrations in the air have increased over the last decade dramatically
math_qa
mathqa_03_03513
at a special sale , 8 tickets can be purchased for the price of 6 tickets . if 8 tickets are purchased at the sale , the amount saved will be what percent of the original price of the 8 tickets ?
[ "25 %", "33.3 %", "40 %", "60 %" ]
A
"let the price of a ticket be rs . 100 , so 6 tickets cost 600 & 8 tickets cost 800 8 tickets purchased at price of 6 tickets ie . , for 600 , so amount saved s rs . 200 , % of 6 tickets = ( 200 / 800 ) * 100 = 25 % answer : a"
openbookqa
obqa_02_03598
A being which has migrated may have
[ "sought warmth", "preferred snow", "enjoyed the cold", "wanted to freeze" ]
A
An example of migration is birds flying south in the winter
sciq
sciq_01_03081
What is the function of chloroplasts that are found in plant and algal cells?
[ "mitosis", "glycolysis", "spermatogenesis", "photosynthesis" ]
D
Actually, almost all organisms obtain their energy from photosynthetic organisms. For example, if a bird eats a caterpillar, then the bird gets the energy that the caterpillar gets from the plants it eats. So the bird indirectly gets energy that began with the glucose formed through photosynthesis. Therefore, the proce...
medmcqa
medmcqa_05_01016
A patient with breast carcinoma was given 3 months of radiation therapy. After that she was started with chemotherapy. Within few days she developed rashes over the areas where radiation was given. Which of the following drug can cause this condition
[ "Actinomycin", "Bleomycin", "Mitomycin", "Busulfan" ]
A
The above phenomenon is termed as "Radiation recall syndrome" where severe skin reaction is seen after initiation of anti-cancer drugs soon or during radiotherapy. It is seen with drugs like Actinomycin, Doxorubicin, Daunoxubicin.
ARC-Challenge
arc_04_02697
Some types of medicines can be used to cure people when they are sick. Some medicines, however, may cause bad reactions to the people taking them. This difference is an example of
[ "technology being used to help heal people.", "medical procedures being used to hurt people.", "expensive medicines being used for many purposes.", "the solution to one problem causing another problem." ]
D
null
ARC-Easy
arc_04_00517
A recycling plant manager needs to melt 1500 kg of scrap copper to sell to a wire manufacturer. The copper is at 15°C and its melting point is 1083°C. The copper has a specific heat of 385 J/kg x K. How much heat is required to raise the temperature of the copper to its melting point?
[ "6.2 x 10^8 J", "6.3 x 10^8 J", "7.7 x 10^8 J", "7.9 x 10^8 J" ]
A
null
math_qa
mathqa_03_00877
we have boxes colored either red or blue . in each blue box there is a fixed number of blueberries . in each red box there is a fixed number of strawberries . if we dispose of one blue box for one additional red box , the total number of berries would increase by 10 , and the difference between the total number of stra...
[ "10", "15", "20", "25" ]
C
"let x be the number of blueberries in each blue box . then there are x + 10 strawberries in each red box . x + ( x + 10 ) = 50 x = 20 the answer is c ."
openbookqa
obqa_02_02326
Which would block the most sunlight?
[ "a mighty oak", "a lowly bush", "an eagle's nest", "a mail box" ]
A
if a tree falls then sunlight becomes available to the surrounding plants
medmcqa
medmcqa_05_02998
Dorsiflexion of ankle joint is by
[ "Tibialis anterior", "Peroneus longus", "Tibialis posterior", "Soleus" ]
A
Muscles producing movements of ankle - A. Dorsiflexion : Tibialis anterior is the principal muscle,(Extensor digitorum anterior longus, Extensor hallucis longus,Peroneus teius are the accessory muscles) B. Plantar flexion : Gastrocnemius and Soleus are the principal muscles ( plantaris, Tibialis posterior, Flexor hallu...
medmcqa
medmcqa_05_03359
Which of the following drug is a direct inhibitor of clotting factor Xa?
[ "Apixaban", "Argatroban", "Fondaparinux", "Aspirin" ]
A
Impoant ones are: - (1) Rivaroxaban (2) Apixaban (3) Edoxaban (4) Betrixaban (a) Argatroban - Direct thrombin inhibitor (synthetic non-peptide compound which binds reversibly to the catalytic site of thrombin but not to the substrate recognition site) (b) Fondaparinux - Indirect thrombin inhibitor. (d)Aspirin - Inhibit...
sciq
sciq_01_08322
Warm water from the equator mixes with cold water from where?
[ "the continents", "the oceans", "the tropics", "the poles" ]
D
Water flows through all the world’s oceans. Warm water from the equator mixes with cold water from the poles. The mixing of warm and cold water makes the water temperature moderate.
openbookqa
obqa_02_03651
animals learn some behaviors from watching their
[ "rocks", "toys", "caretakers", "trees" ]
C
animals learn some behaviors from watching their parents
sciq
sciq_01_08727
What allowed life to expand and diversify during the early cambrian period?
[ "cool, dry climate", "hot, dry climate", "cool, humid climate", "warm, humid climate" ]
D
The warm, humid climate of the early Cambrian allowed life to expand and diversify. This brought the Cambrian Explosion. Life exploded both in diversity and in quantity!.
openbookqa
obqa_02_01437
A seismometer will be able to tell someone
[ "how wet a storm made the ground", "how badly things were shaking", "how loud a siren was", "how fast a cheetah is" ]
B
a seismometer is used to measure the strength or magnitude of an earthquake
medmcqa
medmcqa_05_00237
"Lift off" test is done for NOT RELATED -OHO
[ "Subscapularis", "Infraspinatus", "Supraspinatus", "Teres minor" ]
A
a. Resisted internal rotation (subscapularis) = "Lift-off test"b. Resisted external rotation (infraspinatus, teres minor)c. Resisted abduction (supraspinatus) = "Empty Can Test", Jobe's Test (thumbs down, arms forward 30deg) and Drop-Arm Testd. Speed's Test (biceps)e. Yergason's Test (biceps)
sciq
sciq_01_08750
What do we call the amount of time it will take for half of the radioactive material to decay?
[ "one full-life", "one half-life", "one quarter-life", "one partial-life" ]
B
The measure of how quickly a nucleus decays is given by the half-life of the nucleus. One half-life is the amount of time it will take for half of the radioactive material to decay.
openbookqa
obqa_02_01831
Where might you find the primary ingredient for making grilled rabbit in a spicy marinade?
[ "a spacious area mostly covered with trees and undergrowth", "inside of an AA battery", "an enclosed bank vault", "at the bottom of a bleached coral reef" ]
A
some rabbits live in forests
ARC-Easy
arc_04_00623
Improvements in farming technology would most likely
[ "increase the amount of food produced.", "change global climate conditions.", "promote unhealthy dietary choices.", "decrease the amount of daily exercise." ]
A
null
math_qa
mathqa_03_01739
the h . c . f . of two numbers is 12 and their l . c . m . is 600 . if one of the number is 30 , find the other ?
[ "100", "240", "120", "200" ]
B
"other number = 12 * 600 / 30 = 240 answer is b"
sciq
sciq_01_10410
Gas, liquid, and solid describe what property of matter?
[ "states", "Physical", "Quatitative", "Chemical" ]
A
In addition to these properties, other physical properties of matter include the state of matter. States of matter include liquid, solid, and gaseous states. For example at 20°C, coal exists as a solid and water exists as a liquid. Additional examples of physical properties include:.
sciq
sciq_01_09371
What are the lipids containing phosphorus?
[ "eukaryotes", "hemoglobin", "alkaloids", "phospholipids" ]
D
plants. Saturated triglycerides are those containing a higher proportion of saturated fatty acid chains (fewer carbon-to-carbon double bonds); unsaturated triglyceridescontain a higher proportion of unsaturated fatty acid chains. Saponification is the hydrolysis of a triglyceride in a basic solution to form glycerol an...
sciq
sciq_01_06141
Materials, such as iron, that exhibit strong magnetic effects are labeled what?
[ "ferromagnetic", "ultramagnetic", "paramagnetic", "superconducting" ]
A
Magnetic poles always occur in pairs of north and south—it is not possible to isolate north and south poles. All magnetism is created by electric current. Ferromagnetic materials, such as iron, are those that exhibit strong magnetic effects. The atoms in ferromagnetic materials act like small magnets (due to currents w...
math_qa
mathqa_03_04107
what is the dividend . divisor 18 , the quotient is 9 and the remainder is 3
[ "a", "b", "c", "d" ]
C
"d = d * q + r d = 18 * 9 + 3 d = 162 + 3 d = 165 answer : c"
sciq
sciq_01_05502
What type of reproduction takes place when an animal simply divides into two parts?
[ "sexual reproduction", "fusion", "budding", "fission" ]
D
Some invertebrates can also reproduce asexually. This may occur by fission or budding. Fission takes place when an animal simply divides into two parts. Each part then regrows the missing part. The result is two whole organisms. Budding may take place when a parent forms a small bump, or bud. The bud remains attached t...
ARC-Easy
arc_04_00943
Which form of energy is needed to change water from a liquid to a gas?
[ "heat", "mechanical", "chemical", "sound" ]
A
null
math_qa
mathqa_03_03878
seed mixture x is 40 % ryegrass and 60 % bluegrass by weight ; seed mixture y is 25 % ryegrass and 75 % fescue . if a mixture of x and y contains 28 % ryegrass , what percent of the weight of the mixture is from mixture x ?
[ "10 %", "20 %", "40 %", "50 %" ]
B
"28 % is 3 % - points above 25 % and 12 % - points below 40 % . thus the ratio of mixture y to mixture x is 4 : 1 . the percent of mixture x is 1 / 5 = 20 % . the answer is b ."
openbookqa
obqa_02_01188
Some lizards can live in
[ "environments lacking oxygen", "moisture deficient environments", "zero gravity environments", "food barren environments" ]
B
some lizards live in desert habitats
openbookqa
obqa_02_03530
Nocturnal predators hunt during when?
[ "sunrise", "daylight", "sleepy time", "summer" ]
C
nocturnal predators hunt during the night
math_qa
mathqa_03_04775
eden drove an average speed of 15 miles per hour for the first 20 miles of a tripthen at a average speed of 30 miles / hr for the remaining 20 miles of the trip if she made no stops during the trip what was eden ' s avg speed in miles / hr for the entire trip
[ "35", "20", "45", "50" ]
B
avg . speed = total distance / total time total distance = 40 miles total time = 20 / 15 + 15 / 30 = 2 avg . speed = 20 . answer - b
openbookqa
obqa_02_02267
A man had a car that only could travel for thirteen miles for every gallon of gasoline. His new car can travel forty miles for each gallon of gasoline. A trip that is fifty miles away will now require
[ "the same amount of gas", "various amounts of gas", "more gas than before", "less gas than before" ]
D
as mileage per galon of gasoline increases , the amount of gasoline used will decrease
sciq
sciq_01_07120
Synostoses unite the sacral vertebrae that fuse together to form the what?
[ "lower sacrum", "young sacrum", "adult sacrum", "permanent sacrum" ]
C
synostoses and fusing the bony components together into the single hip bone of the adult. Similarly, synostoses unite the sacral vertebrae that fuse together to form the adult sacrum.
sciq
sciq_01_03891
What element is the sun mostly made up of?
[ "mercury", "helium", "hydrogen", "manganese" ]
C
The Sun is mostly hydrogen with smaller amounts of helium. The material is in the form of plasma.
openbookqa
obqa_02_00919
What will receive more sunlight?
[ "Elephant Ear Leaves", "Blades of grass", "A bat", "A worm" ]
A
as the size of a leaf increases , the amount of sunlight absorbed by that leaf will increase
openbookqa
obqa_02_00034
In the wilderness, light pollution is?
[ "less", "stronger", "brighter", "more widespread" ]
A
as distance to a city decreases , the amount of light pollution will increase
math_qa
mathqa_03_01838
270 ã · ? ã — 15 + 270 = 405
[ "24", "25", "30", "39" ]
C
"explanation : 270 ã · ? ã — 15 = 405 - 270 = 135 ( 270 ã — 15 ) / ? = 135 ? = ( 270 ã — 15 ) / 135 = 30 answer : option c"
openbookqa
obqa_02_04607
Octopuses excrete an ink as defense when
[ "They're in danger", "they are flying", "cooking", "never" ]
A
ink is used for hiding from predators by octopuses
math_qa
mathqa_03_03988
find the value of 72516 x 9999 = m ?
[ "456578972", "436567874", "725087484", "725117481" ]
C
"72516 x 9999 = 72516 x ( 10000 - 1 ) = 72516 x 10000 - 72516 x 1 = 725160000 - 72516 = 725087484 c"
ARC-Challenge
arc_04_02645
Rhinoceroses and horses are related. They have very similar digestive systems and an odd number of toes on their feet. Horses have one toe, and rhinoceroses have three. These facts best support which claim?
[ "Horses and rhinoceroses share a common ancestor.", "Horses and rhinoceroses are genetically identical.", "Horses are the ancestors of modern rhinoceroses.", "Horses have descended from modern rhinoceroses." ]
A
null
math_qa
mathqa_03_01312
mary works in a restaurant a maximum of 60 hours . for the first 20 hours , she is paid $ 8 per hour . for each overtime hour , she is paid at a rate which is 25 % higher than her regular rate . how much mary can earn in a week ?
[ "300", "420", "560", "320" ]
C
mary receives $ 8 ( 20 ) = $ 160 for the first 20 hours . for the 40 overtime hours , she receives $ 8 ( 0.25 ) + $ 8 = $ 10 per hour , that is $ 10 ( 40 ) = $ 400 . the total amount is $ 160 + $ 400 = $ 560 answer c 560 .
medmcqa
medmcqa_05_02513
What is the diagnosis in this patient who presented with sudden painful vision impairment after vigorous exercise?
[ "Central retinal artery occlusion", "Corneal ulcer", "Dislocation of the lens", "Episcleritis" ]
C
Answer C. Dislocation of the lensThere is anterior dislocation of the lens. Rupture of the zonular fibers may result from ocular trauma or other conditions. The patient underwent surgical extraction of the dislocated lens, anterior vitrectomy, and implantation of an iris-fixated intraocular lens.
sciq
sciq_01_02857
Proteins include 20 common types of what compounds?
[ "mitochondria", "rna acids", "dna", "amino acids" ]
D
There are 20 common amino acids in proteins. There are 64 possible codons, more than enough to code for the 20 amino acids. The genetic code is shown in Figure below . To see how scientists cracked the genetic code, go to this link: http://www. dnalc. org/view/16494-Animation-22-DNA-words-are-three-letters-long-. html ...
sciq
sciq_01_04693
What type of reproduction is exemplified by starfish and yeasts?
[ "bacteria reproduction", "asexual reproduction", "microscopic reproduction", "sexual reproduction" ]
B
Starfish: Flickr:amanderson2; Yeast: Zappy's. Starfish and yeasts are examples of organisms that reproduce asexually . Starfish: CC BY 2.0; Yeast: CC BY-NC 3.0.
math_qa
mathqa_03_00205
after 10 % of the inhabitants of a village disappeared , a panic set in during which 25 % of the remaining inhabitants left the village . at that time , the population was reduced to 4725 . what was the number of original inhabitants ?
[ "5000", "7000", "4000", "8000" ]
B
"let the total number of original inhabitants be x . ( 75 / 100 ) * ( 90 / 100 ) * x = 4725 ( 27 / 40 ) * x = 4725 x = 4725 * 40 / 27 = 7000 the answer is b ."
ARC-Challenge
arc_04_03109
Which pair of human body systems functions most closely together?
[ "nervous and excretory", "digestive and muscular", "skeletal and circulatory", "respiratory and cardiovascular" ]
D
null
math_qa
mathqa_03_02535
if the sum of 3 consecutive even numbers is 44 more than the average of these numbers , then the largest of these numbers is ?
[ "24", "66", "9", "7" ]
A
answer : 24 explanation : let the smallest of these number be x . the other two numbers are ( x + 2 ) and ( x + 4 ) . x + ( x + 2 ) + ( x + 4 ) = ( x + ( x + 2 ) + ( x + 4 ) ) / 3 + 44 3 x + 3 * ( x + 2 ) + 3 * ( x + 4 ) = x + ( x + 2 ) + ( x + 4 ) + 132 9 x + 18 = 3 x + 138 6 x = 120 x = 20 therefore , the largest num...
openbookqa
obqa_02_04545
Which likely is digested by the body?
[ "fire", "air", "twinkies", "water" ]
C
digestion is when stomach acid breaks down food
sciq
sciq_01_10816
What happens to a substance in a liquid state when the temperate is lowed?
[ "it solidifies", "it evaporates", "it dissipates", "it melts" ]
A
Under the right pressure conditions, lowering the temperature of a substance in the liquid state causes the substance to solidify. The opposite effect occurs if the temperature is increased.
medmcqa
medmcqa_05_03479
Rx of choice in chronic alcoholic with normal RES, normal BUN, but altered sensorium -
[ "Vit. B, injection IM", "Dextrose 50%", "Dextrose 10%", "Normal saline" ]
A
chronic alcoholism causes deficiency of vitamin b which causes altered sensorium Alcoholic patients with chronic thiamine deficiency also may have central nervous system (CNS) manifestations known as Wernicke's encephalopathy, which consists of horizontal nystagmus, ophthalmoplegia (due to weakness of one or more extra...