dataset stringclasses 6
values | id stringlengths 12 16 | question stringlengths 1 935 | choices listlengths 4 4 | answer stringclasses 4
values | support stringlengths 0 7.76k ⌀ |
|---|---|---|---|---|---|
math_qa | mathqa_03_01097 | two boats are heading towards each other at constant speeds of 5 miles / hr and 21 miles / hr respectively . they begin at a distance 20 miles from each other . how far are they ( in miles ) one minute before they collide ? | [
"1 / 12",
"5 / 12",
"1 / 6",
"13 / 30"
] | D | the question asks : how far apart will they be 1 minute = 1 / 60 hours before they collide ? since the combined rate of the boats is 5 + 21 = 26 mph then 1 / 60 hours before they collide they ' ll be rate * time = distance - - > 26 * 1 / 60 = 13 / 30 miles apart . answer : d . |
openbookqa | obqa_02_00871 | The moon reflects sunlight to arrive at | [
"the moon",
"the ocean",
"orbiting satellites",
"the space station"
] | B | the moon reflects sunlight towards the Earth |
sciq | sciq_01_05189 | What do you call any substance that opposes coagulation? | [
"anticoagulant",
"dissolvent",
"antibodies",
"toxin"
] | A | Plasma Anticoagulants An anticoagulant is any substance that opposes coagulation. Several circulating plasma anticoagulants play a role in limiting the coagulation process to the region of injury and restoring a normal, clot-free condition of blood. For instance, a cluster of proteins collectively referred to as the pr... |
sciq | sciq_01_04537 | Earthquakes and visible light are examples of what? | [
"winds",
"waves",
"currents",
"geological phenomena"
] | B | Introduction to Oscillatory Motion and Waves What do an ocean buoy, a child in a swing, the cone inside a speaker, a guitar, atoms in a crystal, the motion of chest cavities, and the beating of hearts all have in common? They all oscillate—-that is, they move back and forth between two points. Many systems oscillate, a... |
math_qa | mathqa_03_02880 | a number is doubled and 9 is added . if the resultant is trebled , it becomes 57 . what is that number ? | [
"5",
"6",
"8",
"7"
] | A | "let the number be x . then , 3 ( 2 x + 9 ) = 57 2 x = 10 = > x = 5 answer : a" |
ARC-Challenge | arc_04_03088 | Which characteristic does a paramecium have in common with volvox? | [
"able to produce gametes",
"can perform photosynthesis",
"has an organelle for movement",
"lives as one of a colony of cells"
] | C | null |
sciq | sciq_01_01126 | What happens to evolution when equilibrium is reached within the genes of the population? | [
"it accelerates",
"it starts over",
"it stops occurring",
"it goes backwards"
] | C | If balance, or equilibrium, is to be maintained, there must be no outside influences on the stones. Equilibrium can also be maintained within a population's genes; that means, no evolution can occur. But outside influences usually prevent equilibrium from staying established. |
openbookqa | obqa_02_04645 | In the morning, Rebecca saw some fluid in the gutter. Later, it was gone. What happened to it? | [
"condensation",
"evaporation",
"magic",
"deposition"
] | B | evaporation is when water is drawn back up into the air in the water cycle |
sciq | sciq_01_03165 | The cytoplasm divides during what stage of the cell cycle? | [
"electrolysis",
"cytokinesis",
"birthing",
"capitis"
] | B | 3. The third step is the division of the rest of the cell. This is called cytokinesis, as it is in a prokaryotic cell. During this step, the cytoplasm divides, and two daughter cells form. |
sciq | sciq_01_00253 | What is moving air called? | [
"steam",
"wind",
"humidity",
"clouds"
] | B | Moving air, like moving water, causes erosion. Moving air is called wind. |
sciq | sciq_01_04860 | What is the name of a tough, fibrous membrane which protects the outer layer of bone? | [
"marrow",
"the epithelium",
"cartilage",
"the periosteum"
] | D | Periosteum is a tough, fibrous membrane that covers and protects the outer surfaces of bone. |
medmcqa | medmcqa_05_02193 | What are the EEG waves recorded for parieto occipital region with subject awake an eyes closed: | [
"Alpha waves",
"Beta waves",
"Theta waves",
"Delta waves"
] | A | A ref: Physio Ganong, 21 st/e p. 197 |
ARC-Easy | arc_04_00400 | While studying the relationship between number of trees and amount of atmospheric oxygen, which of the following would be most important to take into account? | [
"contributions to atmospheric oxygen from sources other than trees",
"the ways in which industrialized nations use trees",
"the root area of trees",
"the bark mass of trees"
] | A | null |
sciq | sciq_01_01198 | Materials that are good conductors of thermal energy are called? | [
"thermal conductors",
"atmospheric conductors",
"atmospheric inductors",
"thermal inductors"
] | A | Materials that are good conductors of thermal energy are called thermal conductors. Metals are very good thermal conductors. |
math_qa | mathqa_03_03824 | the average of 6 observations is 15 . a new observation is included and the new average is decreased by 1 . the seventh observation is ? | [
"1",
"8",
"5",
"6"
] | B | "let seventh observation = x . then , according to the question we have = > ( 90 + x ) / 7 = 14 = > x = 8 hence , the seventh observation is 8 answer : b" |
sciq | sciq_01_08003 | A voltage source and a conductor are common to all what? | [
"electric circuits",
"thermometers",
"cooling circuits",
"magnets"
] | A | All electric circuits have at least two parts: a voltage source and a conductor. They may have other parts as well, such as light bulbs and switches, as in the simple circuit seen in the Figure below . To see an animation of a circuit like this one, go to: http://www. rkm. com. au/animations/animation-electrical-circui... |
sciq | sciq_01_03039 | What is the opening formed between adjacent vertebrae for the exit of a spinal nerve called? | [
"spinous process",
"inferior vertebral notch",
"intervertebral foramen",
"sympathetic ganglion"
] | C | Figure 7.24 Intervertebral Disc The bodies of adjacent vertebrae are separated and united by an intervertebral disc, which provides padding and allows for movements between adjacent vertebrae. The disc consists of a fibrous outer layer called the anulus fibrosus and a gel-like center called the nucleus pulposus. The in... |
sciq | sciq_01_07482 | Amino groups are found within amino acids, nicknamed the building blocks of what? | [
"proteins",
"carbohydrates",
"protons",
"lipids"
] | A | Amino groups are found within amino acids, the building blocks of proteins. |
sciq | sciq_01_02864 | Modern plants reflect what kind of changes that have occurred over many, many years? | [
"unknown changes",
"evolutionary changes",
"tendency changes",
"tissue changes"
] | B | The types of living plants today reflect the evolutionary past of the plant kingdom. From tiny nonvascular mosses to large flowering and fruiting trees, there are modern plants that represent each of the major evolutionary changes that occurred in this important eukaryotic kingdom. |
sciq | sciq_01_07795 | Where does most geologic activity take place? | [
"outer core",
"plate boundaries",
"asthenosphere",
"inner core"
] | B | Plate boundaries are where two plates meet. Most geologic activity takes place at plate boundaries. This activity includes volcanoes, earthquakes, and mountain building. The activity occurs as plates interact. How can plates interact? Plates can move away from each other. They can move toward each other. Finally, they ... |
medmcqa | medmcqa_05_01296 | Most common presentation of Renal Tuberculosis is: | [
"Renal colic",
"Sterile Pyuria",
"Intractable urgency",
"Painful micturition"
] | B | Answer is B (Sterile Pyuria): The most common clinical presentation of Urological Tuberculosis is Sterile Pyuria. 'The most common clinical presentation of urological tuberculosis is sterile pyuria and painless hematuria - Textbook of Pulmonary and Critical Care Medicine `Renal Tuberculosis is probably underdiagnosed b... |
ARC-Challenge | arc_04_03173 | Astronomical units can be used to measure distances between objects in outer space. One astronomical unit (AU) is the distance between Earth and the Sun. Based on this information, about how many astronomical units is Mars from the Sun? | [
"0.4",
"0.7",
"1.0",
"1.5"
] | D | null |
math_qa | mathqa_03_04911 | solution for 1.35 + . 123 + . 321 | [
"2.91",
"1.794",
"1.338",
"1.986"
] | B | "1.35 + . 123 + . 321 = 0 0 = 0 - 1.35 - 0.123 - 0.321 0 = - 1.794 answer : b" |
math_qa | mathqa_03_02754 | the perimeter of an equilateral triangle is 60 . if one of the sides of the equilateral triangle is the side of an isosceles triangle of perimeter 50 , then how long is the base of isosceles triangle ? | [
"5",
"10",
"15",
"20"
] | B | "the base of the isosceles triangle is 50 - 20 - 20 = 10 units the answer is b ." |
sciq | sciq_01_07905 | The thalamus acts as a gateway to and from what? | [
"pons",
"cortex",
"medulla oblongata",
"spine"
] | B | The thalamus acts as a gateway to and from the cortex. It receives sensory and motor inputs from the body and also receives feedback from the cortex. This feedback mechanism can modulate conscious awareness of sensory and motor inputs depending on the attention and arousal state of the animal. The thalamus helps regula... |
math_qa | mathqa_03_04144 | in an examination , 25 % of total students failed in hindi , 40 % failed in english and 35 % in both . the percentage of these who passed in both the subjects is : | [
"10 %",
"20 %",
"30 %",
"40 %"
] | C | "pass percentage = 100 - ( 25 + 40 - 35 ) = 100 - 70 = 30 answer : c" |
openbookqa | obqa_02_00742 | Precipitation is when hail fall from clouds to the ground, and so is | [
"sprinkles",
"water",
"frost",
"clouds"
] | A | precipitation is when hail fall from clouds to the ground |
openbookqa | obqa_02_02456 | Which is likely to be reflecting the most light? | [
"a desert landscape",
"a forest landscape",
"an arctic landscape",
"a rural landscape"
] | C | snow falls during the winter in the arctic environment |
ARC-Easy | arc_04_00716 | Which of the following is an abiotic factor that can influence the quantity of fish a pond can support? | [
"availability of plants",
"concentration of bacteria",
"quality of water",
"number of consumers"
] | C | null |
openbookqa | obqa_02_02574 | While studying the rings in a fossilized tree trunk, a scientist notices a group of rings that are closer together than the other. This means that | [
"the trees had more sunlight for those years",
"the trees were dead during those years",
"during those years, there was less precipitation",
"the trees had extra water those years"
] | C | as the amount of available water decreases , tree-growth rings will become narrower |
openbookqa | obqa_02_02277 | A storm is covering a town in sleet, which means that things | [
"will be dry",
"will be burning",
"will be slick",
"will be toasty"
] | C | sleet is made of ice |
sciq | sciq_01_11373 | Isothermal expansion is a process occurring without a change in? | [
"variation",
"precipitation",
"weight",
"temperature"
] | D | isothermal expansion is a process occurring without a change in temperature. |
sciq | sciq_01_01221 | What term tells you how quickly the angle changes and can occur in either clockwise or counterclockwise directions? | [
"emit velocity",
"turning velocity",
"angular velocity",
"shift velocity"
] | C | The angular velocity tells you how quickly the angle changes. In more formal language, the rate of change of , the angular position, is called the angular velocity . The direction of angular velocity is either clockwise or counterclockwise. Analogously, the rate of change of is the angular acceleration . |
medmcqa | medmcqa_05_03677 | Which gastric cells have distinct cytoplasmic ultrastructure named 'tubulovesicular system'? | [
"Oxyntic cells",
"Zymogen cells",
"Goblet cells",
"Enteroendocrine cells"
] | A | Ans. a (Oxyntic cells) (Ref. Ganong Physiology 22nd/pg. Chapter 26).It is H+-K+ ATPase in the apical membrane of the parietal cells that pumps H+ against a concentration gradient of this magnitude. The parietal cells are polarized, with an apical membrane facing the lumen of the gastric glands and a basolateral membran... |
medmcqa | medmcqa_05_00352 | Which leaves the pelvis ? | [
"Piriformis",
"Sciatic nerve",
"Superior gluteal vessel",
"Inferior gluteal vessel"
] | B | Sciatic nerve leaves the pelvis and runs posteriorly in the thigh.In the upper angle of popliteal fossa, sciatic nerve divides into tibial nerve and common peroneal nerve |
openbookqa | obqa_02_04550 | Sycamores have the worlds largest | [
"trunk",
"friends",
"leaves",
"location"
] | A | a stem is a source of support for a plant |
sciq | sciq_01_00691 | The process in which the nucleus divides is called what? | [
"cytokinesis",
"mitosis",
"epistasis",
"meiosis"
] | B | In eukaryotic cells, the nucleus divides before the cell itself divides. The process in which the nucleus divides is called mitosis. Before mitosis occurs, a cell’s DNA is replicated. This is necessary so that each daughter cell will have a complete copy of the genetic material from the parent cell. How is the replicat... |
openbookqa | obqa_02_00912 | Water evaporates less | [
"on a hot street",
"in a basement",
"on a sunny day",
"next to a window"
] | B | the sun causes water to evaporate more quickly by adding heat |
sciq | sciq_01_09957 | What type of fatty acids have bent chains? | [
"unsaturated fatty acids",
"saturated fatty acids",
"lipids",
"cholesterol"
] | A | Fatty Acids. Saturated fatty acids have straight chains, like the three fatty acids shown on the left. Unsaturated fatty acids have bent chains, like all the other fatty acids in the figure. |
medmcqa | medmcqa_05_03261 | Which of the following drug is used for radical cure- | [
"Choloroquine",
"Primaquine",
"Quinine",
"Mepacrine"
] | B | Ans. is 'b' i.e., Primaquine o Drugs which act on exoerythrocytic stage in liver (hypnozoites) are used for radical cure. Primaquine is the only drug which is used for radical cure. |
sciq | sciq_01_02120 | What percentage of all species that ever lived on earth have gone extinct? | [
"93 %",
"25%",
"99%",
"50%"
] | C | Over 99 percent of all species that ever lived on Earth have gone extinct. Five mass extinctions are recorded in the fossil record. They were caused by major geologic and climatic events. Evidence shows that a sixth mass extinction is occurring now. Unlike previous mass extinctions, the sixth extinction is due to human... |
sciq | sciq_01_00402 | An excessive posterior curvature of the thoracic region is also known as what? | [
"kyphosis",
"babesiosis",
"lordosis",
"osmosis"
] | A | Vertebral Column Developmental anomalies, pathological changes, or obesity can enhance the normal vertebral column curves, resulting in the development of abnormal or excessive curvatures (Figure 7.21). Kyphosis, also referred to as humpback or hunchback, is an excessive posterior curvature of the thoracic region. This... |
medmcqa | medmcqa_05_03699 | During 3rd month of gestation, hematopoiesis occurs in | [
"Liver",
"Thymus",
"Spleen",
"Bone marrow"
] | A | From 3rd month of gestation liver and spleen become main site of hematopoiesis-Hepatic phaseSpleen makes smaller contribution compared to liverRef: Medical Physiology Indu Khurana 2015 edition page No:104 |
openbookqa | obqa_02_01503 | If it's been twelve weeks since you put on shorts, and you notice today the hours of light and dark are just about equal, how long will it be until Winter? | [
"just over a year",
"around thirteen weeks or so",
"when G.R.R. Martin says it's here",
"when the groundhog sees its shadow"
] | B | a new season occurs once per three months |
sciq | sciq_01_09924 | What factors consist of parts of the environment that are or were alive, and their remains? | [
"abiotic factors",
"biotic factors",
"decomposition factors",
"xerophytic factors"
] | B | Biotic factors are the parts of the environment that are alive, or were alive and then died, such as plants, animals, and their remains. Biotic factors also include bacteria, fungi and protists. |
openbookqa | obqa_02_03969 | Tides can change in different locations because | [
"A higher power",
"God",
"Magic",
"the pacific's bottom"
] | D | the tide cycle regularly occurs twice per day |
medmcqa | medmcqa_05_02725 | Narcolepsy is due to an abnormality in - | [
"Hypothalamus",
"Neocortex",
"Cerebellum",
"Medulla oblongata"
] | A | Narcolepsy is unique in that those who suffer from it typically fall almost instantaneously into REM sleep.
It is thought that narcolepsy is caused by a malfunctioning of the hypothalamus in the brain. |
medmcqa | medmcqa_05_00411 | Tober Ayer test is positive in: | [
"Lateral sinus thrombosis",
"Petrositis",
"Cerebral abscess",
"Subarachnoid hemorrhage"
] | A | The Tobey-Ayer test is used for lateral sinus thrombosis by monitoring cerebrospinal fluid pressure during a lumbar puncture. |
sciq | sciq_01_01346 | Temperature and pressure affect changes in phases or states of what? | [
"homeostasis",
"matter",
"energy",
"decay"
] | B | Most substances have three distinct phases: gas, liquid, and solid. Phase changes among the various phases of matter depend on temperature and pressure. The existence of the three phases with respect to pressure and temperature can be described in a phase diagram. Two phases coexist (i. , they are in thermal equilibriu... |
sciq | sciq_01_05072 | Fine-grained mud in the deep ocean comes from silts and clays brought from the land by? | [
"fire",
"wind",
"water",
"waves"
] | B | Fine-grained mud in the deep ocean comes from silts and clays brought from the land by wind. The particles are deposited on the sea surface. they slowly settle to the deep ocean floor, forming brown, greenish, or reddish clays. Volcanic ash may also settle on the seafloor. |
medmcqa | medmcqa_05_04075 | Actinomycosis most common site- | [
"Cervicofacial",
"Thoracis",
"Abdomen",
"Brain"
] | A | Ans. is 'a' i.e., Cervicofacial Oral-cervicofacial type is the most common form of actinomycosis. |
openbookqa | obqa_02_03026 | A bee can enjoy a lovely snack on | [
"iris dust",
"fresh whale",
"hard leather",
"old shoes"
] | A | bees eat pollen |
openbookqa | obqa_02_03168 | if a toy car needed to be measured for its content capacity, which of these might help? | [
"an aluminum coated barometer",
"a metal wind vane",
"a mercury filled thermometer",
"a cylinder with standardized markings"
] | D | a graduated cylinder is a kind of instrument for measuring volume of liquids or objects |
openbookqa | obqa_02_00395 | Cooking food requires | [
"higher temps to be applied",
"a stove to be used",
"an oven to be used",
"a fire to be built"
] | A | if food is cooked then heat energy is added to that food |
sciq | sciq_01_01024 | What kind of pipettes are suitable for measuring very small amounts of liquids? | [
"frozen pipettes",
"macropipettes",
"micropipettes",
"clutch pipettes"
] | C | Pipettes are small, but important tools in many biology labs. Micropipettes, such as the ones shown here, are calibrated to measure very small amounts of liquids. For example, 100 microliters (100 µL) is about half the volume of your little finger tip; or even 1 µL, which is much smaller than a drop of water. |
sciq | sciq_01_09594 | What are composed of a phosphate group, a sugar, and one of five different nitrogenous bases. | [
"carotenoids",
"prokaryotes",
"nucleotides",
"cytotypes"
] | C | Nucleotides are composed of a phosphate group, a sugar, and one of five different nitrogenous bases. |
sciq | sciq_01_01176 | What flexible organ enables swallowing and speech? | [
"tongue",
"diaphram",
"stomach",
"large intestine"
] | A | The Tongue Perhaps you have heard it said that the tongue is the strongest muscle in the body. Those who stake this claim cite its strength proportionate to its size. Although it is difficult to quantify the relative strength of different muscles, it remains indisputable that the tongue is a workhorse, facilitating ing... |
sciq | sciq_01_10116 | What are the insects that suck up the sap from plants? | [
"roaches and leafhoppers",
"plagues and leafhoppers",
"aphids and leafhoppers",
"butterflies and leafhoppers"
] | C | Insects eat in many different ways and they eat a huge range of foods. Around half are plant-eaters, feeding on leaves, roots, seeds, nectar, or wood. Aphids and leafhoppers suck up the sap from plants. Praying mantises are predators, hunting other small creatures, including insects like moths, caterpillars, flies, bee... |
sciq | sciq_01_02593 | What is in danger of happening when thick magma is formed? | [
"focused eruptions",
"earthquakes",
"continuous eruptions",
"explosive eruptions"
] | D | Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash ( Figure below ). The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too far from the vent. The thick magma may also create ex... |
math_qa | mathqa_03_04651 | three 6 faced dice are thrown together . the probability that no two dice show the same number on them is | [
"5 / 0",
"5 / 9",
"5 / 1",
"5 / 3"
] | B | "explanation : no two dice show same number would mean all the three faces should show different numbers . the first can fall in any one of the six ways . the second die can show a different number in five ways . the third should show a number that is different from the first and second . this can happen in four ways .... |
openbookqa | obqa_02_02946 | the gravitational pull between two objects increases as they are | [
"spun around",
"brought together",
"exposed to light",
"moved apart"
] | B | as distance from an object decreases , the the pull of gravity on that object increases |
medmcqa | medmcqa_05_03411 | Which of the following is rapidly acting insulin: September 2007 | [
"Lente",
"Insulin glargine",
"Ultralente",
"Insulin lispro"
] | D | Ans. D: Insulin Lispro Insulin is divided into four basic types based on how quickly it works and how long it lasts. Rapid-acting insulin (such as lispro/aspa/glulisine) is the fastest and shoest acting. It is taken as several daily injections up to 5 minutes before meals or just after eating. Rapid-acting insulin reac... |
ARC-Challenge | arc_04_02960 | Birds that do not receive adequate nutrition during development sing less often and for shorter periods of time as adult birds. Which best describes the outcome of nutritional stress in these songbirds? | [
"They are less likely to ward off predators.",
"They are less likely to obtain good nesting sites.",
"They are less likely to find adequate food supplies.",
"They are less likely to attract mates and pass on their genes."
] | D | null |
sciq | sciq_01_04769 | The testes produce what hormone? | [
"insulin",
"testosterone",
"dopamine",
"estrogen"
] | B | The gonads secrete sex hormones. The male gonads are called testes . They secrete the male sex hormone testosterone. The female gonads are called ovaries . They secrete the female sex hormone estrogen. Sex hormones are involved in the changes of puberty. They also control the production of gametes by the gonads. |
sciq | sciq_01_07805 | What is the apparatus used for carrying out an electrolysis reaction called? | [
"biochemical cell",
"reversible cell",
"fluorescent cell",
"electrolytic cell"
] | D | An electrolytic cell is the apparatus used for carrying out an electrolysis reaction. Figure below shows an electrolytic cell composed of Zn|Zn 2+ and Cu|Cu 2+ half-cells. |
medmcqa | medmcqa_05_01114 | Cancer cells survival is enhanced by | [
"Suppression of p53 protein",
"Over expressions of p53 gene",
"Bcl_2",
"Bax"
] | A | C is also the answer Ref Robbins 7/e p306, 274,9/e p302 Cell survival would be seen when they are prevented from apoptosis .genes that ors cells survival and protect from apoptosis are _ bcl_2 ..BCL _xl Genes that ors programmed cell death are : Bax,bad,bcl,_xl,p53 |
sciq | sciq_01_09507 | Which bone is derived from the fusion of four very small coccygeal vertebrae? | [
"cranium",
"clavicle",
"coccyx",
"femur"
] | C | The body can also respond effectively to short-term exposure to cold. One response to cold is shivering, which is random muscle movement that generates heat. Another response is increased breakdown of stored energy to generate heat. When that energy reserve is depleted, however, and the core temperature begins to drop ... |
ARC-Easy | arc_04_01070 | The number of daylight hours in New York State changes with the | [
"season of the year",
"Moon's changing appearance",
"direction of the wind",
"arrival of a severe storm"
] | A | null |
sciq | sciq_01_09428 | Pollutants in surface water can filter into the ground and enter a what? | [
"combustion aquifer",
"hydro plant",
"groundwater aquifer",
"turbine"
] | C | Pollutants in surface water can filter into the ground and enter a groundwater aquifer. Irrigation water can bring pesticides and other chemicals. Water can seep through landfills. Tanks of gasoline stored underground can leak. |
openbookqa | obqa_02_02906 | Which would likely cause refraction? | [
"lego bricks",
"car windshields",
"paper",
"lemons"
] | B | objects made of glass cause refraction of light |
openbookqa | obqa_02_03357 | if a local pond by the road receives unusual amounts of rainfall, what could happen? | [
"there could be a tsunami",
"there could be a road blockage",
"there could be an earthquake",
"there could be a volcanic eruption"
] | B | when a body of water receives more water than it can hold , a flood occurs |
sciq | sciq_01_11668 | What is caused by differences in density at the top and bottom of the ocean? | [
"still water",
"shallow currents",
"flat currents",
"deep currents"
] | D | Currents also flow deep below the surface of the ocean. Deep currents are caused by differences in density at the top and bottom. More dense water takes up less space than less dense water. It has the same mass but less volume. Water that is more dense sinks. Less dense water rises. What can make water more dense?. |
sciq | sciq_01_02556 | What are embedded in the membranes of b cells and bind a variety of antigens through their variable regions? | [
"er cell receptors",
"b.a.p cell receptors",
"b cell receptors",
"a.m. cell receptors"
] | C | Figure 42.13 B cell receptors are embedded in the membranes of B cells and bind a variety of antigens through their variable regions. The signal transduction region transfers the signal into the cell. |
sciq | sciq_01_06772 | The earliest animals were which kind of invertebrates? | [
"dinosaurs",
"insects",
"aquatic",
"mammals"
] | C | The partial geologic time scale in Figure below shows when some of the major events in animal evolution took place. The oldest animal fossils are about 630 million years old, so presumably animals evolved around that time or somewhat earlier. The earliest animals were aquatic invertebrates. The first vertebrates evolve... |
ARC-Easy | arc_04_00013 | Many natural rock formations change color over time. In Utah, for example, iron oxidized and formed red, orange, and yellow rock. Which of the following is the cause of this change? | [
"chemical weathering",
"mechanical weathering",
"water erosion",
"wind erosion"
] | A | null |
medmcqa | medmcqa_05_02369 | Von-Meyenburg's complexes is seen in - | [
"Brain",
"Liver",
"Kidney",
"Spleen"
] | B | Ans. is 'b' i.e., LiverVon Meyenburg Complexes o Close to or within poal tract, these are small clusters of modestly dilated bile ducts embedded in a fibrous, sometimes hyalinised stroma.o Although these "bile duct microhamaromas" may communicate with the biliary tree, they generally are free of pigmented material tree... |
openbookqa | obqa_02_03066 | How is a location of lower elevation affected by flooding as opposed to a higher location? | [
"It is more affected by the flood",
"It is more resistant than a higher place",
"The lower area is drier",
"It is impossible to flood a lower elevation location"
] | A | as elevation of a place decreases , how much a flood will affect that place will increases |
sciq | sciq_01_03463 | What form does formaldehyde take at room temperature? | [
"liquids",
"gas",
"plasma",
"solid"
] | B | Formaldehyde is a gas at room temperature. Acetaldehyde boils at 20°C; in an open vessel, it boils away in a warm room. Most other common aldehydes are liquids at room temperature. |
openbookqa | obqa_02_03788 | Which is likely to disappear? | [
"the last surviving member of a population",
"a male and female rabbit",
"a male and female horse",
"a wild dandelion root"
] | A | if all members of a species cannot produce offspring then that species will likely become extinct |
openbookqa | obqa_02_03841 | The objects the push up through the deep black stuff that covers the ground gives us an item that is inserted in a sweet treat with a flaky bottom of flour that can be eaten with ice cream on top? | [
"Leafs",
"Eggs",
"Milk",
"Fruit"
] | D | plants are the source of fruit |
medmcqa | medmcqa_05_04066 | A 15 years old girl presented with complaints of puffy eyes, swelling in the neck, weight gain, and fatigue. On investigations thyroid peroxidase antibodies present and TSH levels are also elevated. What of the following is most likely diagnosis? | [
"Hashimoto thyroiditis",
"Graves' disease",
"Iodine deficiency",
"Congenital hypothyroidism"
] | A | Elevated TSH levels , presence of thyroid peroxidase antibodies and goiter are s/o Hashimoto thyroiditis. Hashimoto thyroiditis: Aka Chronic lymphocytic thyroiditis Autoimmune disease More common in girls C/F: Goiter, and signs of hypothyroidism like weight gain, fatigue, puffy eyes, slow HR, sensitivity to cold etc. I... |
openbookqa | obqa_02_00751 | chlorophyll | [
"would avoid being pinched on St. Patrick's day",
"would blend in well in the arctic",
"is the color of an embarrassed person's cheeks",
"is a color used also to describe someone sad"
] | A | a chloroplast contains chlorophyll |
sciq | sciq_01_07084 | The heart is a muscular organ that pumps blood through which system? | [
"pulmonary",
"nervous",
"endocrine",
"circulatory"
] | D | Mollusks have a circulatory system with one or two hearts that pump blood. The heart is a muscular organ that pumps blood through the circulatory system when its muscles contract. The circulatory system may be open or closed, depending on the species. |
sciq | sciq_01_01907 | Duckweed and cattails serve what role in the food chain in freshwater biomes? | [
"tertiary consumer",
"secondary consumer",
"primary producer",
"primary consumer"
] | C | Duckweed: Jonathan Jordan; Cattails: User:JoJan/Wikimedia Commons. Duckweed and cattails are respectively the primary producers in standing and running freshwater biomes . Duckweed: CC BY 2.0; Cattails: CC BY 3.0. |
sciq | sciq_01_06052 | The kidneys are a pair of bean-shaped structures that are located just below and posterior to the liver in this? | [
"cerebral cavity",
"peritoneal cavity",
"mantle cavity",
"stomach cavity"
] | B | Kidneys: The Main Osmoregulatory Organ The kidneys, illustrated in Figure 41.4, are a pair of bean-shaped structures that are located just below and posterior to the liver in the peritoneal cavity. The adrenal glands sit on top of each kidney and are also called the suprarenal glands. Kidneys filter blood and purify it... |
openbookqa | obqa_02_03713 | What does a stove generate for cooking? | [
"ice",
"scorching temperatures",
"cold",
"freezing"
] | B | a stove generates heat for cooking usually |
sciq | sciq_01_10532 | Changes in the number of what can lead to disorders like down syndrome? | [
"genes",
"chromosomes",
"dna",
"prokaryotes"
] | B | Changes in chromosome number can lead to disorders like Down syndrome. |
medmcqa | medmcqa_05_01286 | What is Evan's syndrome? | [
"ITP with cryoglobulinemia",
"ITP with hemolytic anemia",
"ITP with spherocytosis",
"ITP with myelodysplastic syndrome"
] | B | ANSWER: (B) ITP with hemolytic anemiaREF: Harrison's 18th ed ch: 115EVANS SYNDROME is the presence of simultaneous or sequential direct Coombs- positive autoimmune hemolytic anemia (AIHA) in conjunction with immune-mediated thrombocytopenia, with no known underlying etiology. The typical clinical course is chronic and ... |
sciq | sciq_01_06260 | Eggs are produced in what organs and, upon fertilization, develop in what other organ? | [
"uterus, vagina",
"fallopian tubes, ovaries",
"cervix, ovaries",
"ovaries, uterus"
] | D | |
sciq | sciq_01_01862 | The final stage of labor is delivery of the what? | [
"embryo",
"placenta",
"umbilical cord",
"uterus"
] | B | |
openbookqa | obqa_02_03193 | What are the source of fruit? | [
"wood",
"plant diagrams",
"green life",
"housing"
] | C | plants are the source of fruit |
openbookqa | obqa_02_04559 | Which is more likely to be able to develop? | [
"an egg under water",
"an egg near a light bulb",
"an egg in the arctic",
"an egg in a freezer"
] | B | an egg requires warmth to develop |
openbookqa | obqa_02_02029 | You can recharge your iPhone by using | [
"ice cubes",
"money",
"wind",
"frozen apple farts"
] | C | wind is a source of energy |
openbookqa | obqa_02_01662 | the nervous system sends observations in the form of electrical signals to what? | [
"cell towers",
"persons flesh",
"computers",
"plugs"
] | B | the nervous system sends observations in the form of electrical signals to the rest of the body |
sciq | sciq_01_04988 | What type of x-linked trait is color blindness? | [
"predominant",
"conscientiousness trait",
"recessive",
"dominant"
] | C | Pedigree for Color Blindness. Color blindness is an X-linked recessive trait. Mothers pass the recessive allele for the trait to their sons, who pass it to their daughters. |
math_qa | mathqa_03_02875 | a certain meter records voltage between 0 and 10 volts inclusive . if the average value of 3 recordings on the meter was 5 volts , what was the smallest possible recording in volts ? | [
"2",
"3",
"4",
"5"
] | B | "if average of 3 is 5 so sum of 3 should be 15 3 recording can be from 0 - 10 inclusive to find one smallest other two should be highest so , lets assume three var are a , b , c say a is smallest and give b and c greatest readings say 6 and 6 so a has to be 3 b" |
math_qa | mathqa_03_04591 | three unbiased coins are tossed . what is the probability of getting 2 heads and 2 tail ? | [
"5 / 8",
"1 / 4",
"3 / 8",
"7 / 8"
] | A | "let , h - - > head , t - - > tail here s = { ttt , tth , tht , htt , thh , hth , hht , hhh } let e = event of getting 3 heads then e = { thh , hth , hht , tht , tth } p ( e ) = n ( e ) / n ( s ) = 5 / 8 answer is a" |
medmcqa | medmcqa_05_00464 | Nerve related to anatomical snuff box - | [
"Ulnar",
"Median",
"Superficial branch of radial",
"Axillary"
] | C | Ans. is 'c' i.e., Superficial branch of radial o Superficial branch of radial nerve passes through the roof of anatomical snuffbox. Anatomical Snuffbox Triangular depression on the dorsal and radial aspect of the hand become visible when thumb is fully extended, o Boundaries Medial/posterior - tendon of the extensor po... |
ARC-Challenge | arc_04_02438 | Where is the smallest negatively-charged particle found in an atom? | [
"nucleus",
"orbits in the nucleus",
"orbits around the nucleus",
"between the proton and neutron"
] | C | null |
medmcqa | medmcqa_05_03079 | A woman who pricked her finger w hile pruning some rose bushes develops a local pustule thatprogressed to an ulcer. Several nodules then developed along the local lymphatic drainage.The most likely etiological agent would be? | [
"Aspergillus fiimigatus",
"Candida albicans",
"Histoplasma capsula turn",
"Sporothrix schenckii"
] | D | Ans. is 'd' i.e., Sporothrix schenckii o Nodules along the lymphatics after plant prick suggest the diagnosis of sporotrichosis.Sporotrichosiso Sporotrichosis is caused by the thermally dimorphic fungus sporothrix schenckii.o Because S.schenckii naturally found in soil, hav, sphagnum moss, and plants, it usually affect... |
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