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7.76k
sciq
sciq_01_04416
What is the term for the study of how living things interact with each other and with their environment?
[ "radiology", "anthropology", "ecology", "biology" ]
C
Ecology is the study of how living things interact with each other and with their environment. It is a major branch of biology, but has areas of overlap with geography, geology, climatology, and other sciences. This lesson introduces fundamental concepts in ecology, beginning with organisms and the environment.
ARC-Challenge
arc_04_02787
Earthworms move randomly throughout topsoil. How do earthworms most likely affect the topsoil?
[ "by compacting the topsoil", "by decreasing the fertility of the topsoil", "by adding nutrients to the topsoil", "by removing the minerals from the topsoil" ]
C
null
sciq
sciq_01_09630
Resonance has been used in what kind of human-made recreational objects since prehistoric times?
[ "toys", "musical instruments", "arrows", "paintbrushes" ]
B
Figure 17.33 Resonance has been used in musical instruments since prehistoric times. This marimba uses gourds as resonance chambers to amplify its sound. (credit: APC Events, Flickr).
sciq
sciq_01_05344
What do doctors call farsightedness or the inability to see close objects clearly?
[ "hypopia", "dysarthria", "myopia", "hyperopia" ]
D
Farsightedness is also known as hyperopia . It affects about one fourth of people. People with hyperopia can see distant objects clearly, but nearby objects appear blurry. In hyperopia, the eye is too short. This results in images being focused in back of the retina ( Figure above ). Hyperopia is corrected with a conve...
ARC-Challenge
arc_04_02946
Casey has found several identical marine animals attached to an artificial reef in the Gulf of Mexico. Which characteristic would identify the animals as mollusks?
[ "brain", "tentacles", "muscular foot", "hard outer casing" ]
C
null
sciq
sciq_01_01580
What occurs before the endometrium thickens in estrous cycles?
[ "pregnancy", "fertilization", "copulation", "ovulation" ]
D
math_qa
mathqa_03_04633
a sum of money lent out at s . i . amounts to rs . 780 after 2 years and to rs . 1020 after a further period of 5 years . the sum is ?
[ "s . 684", "s . 500", "s . 540", "s . 740" ]
A
"s . i for 5 years = ( 1020 - 780 ) = rs . 240 . s . i . for 2 years = 240 / 5 * 2 = rs . 96 . principal = ( 780 - 96 ) = rs . 684 answer : a"
sciq
sciq_01_04484
Oil is found in the porous rock layer and trapped by the what?
[ "impermeable layer", "\\", "crystalline layer", "mantle" ]
A
Oil (red) is found in the porous rock layer (yellow) and trapped by the impermeable layer (brown). The folded structure has allowed the oil to pool so a well can be drilled into the reservoir.
medmcqa
medmcqa_05_03271
P57KIP2 immunostaining is helpful in diagnosing
[ "Ectopic pregnancy", "Normal pregnancy", "Complete molar pregnancy", "Missed aboion" ]
C
In pregnancies before 10 weeks, classic molar changes may not be apparent because villi may not be enlarged and molar stroma may not yet be edematous and avascularOne takes advantage of the differing ploidy to distinguish paial (triploid) moles from diploid entities. Another technique involves histological immunostaini...
math_qa
mathqa_03_03970
a company that ships boxes to a total of 13 distribution centers uses color coding to identify each center . if either a single color or a pair of two different colors is chosen to represent each center and if each center is uniquely represented by that choice of one or two colors , what is the minimum number of colors...
[ "6", "5", "8", "9" ]
B
"back - solving is the best way to solve this problem . you basically need 13 combinations ( including single colors ) if we start from option 1 - > 1 = > 4 c 2 + 4 = 10 ( not enough ) 2 = > 5 c 2 + 5 = 15 ( enough ) since the minimum number is asked . it should be 5 . answer - b"
openbookqa
obqa_02_02699
Which is able to create its own nourishment from sunlight?
[ "roses", "deer", "rainbows", "water buffalo" ]
A
animal cells can not perform photosynthesis
openbookqa
obqa_02_02224
When the body needs to rid itself of potentially toxic elements within it, what process is utilized?
[ "process of purging", "process of circulation", "process of respiration", "process of cooking" ]
A
the excretory system removes waste from the body
sciq
sciq_01_09941
A biofilm is a colony of what that is stuck to a surface such as a rock or a host’s tissues?
[ "vacuoles", "prokaryotes", "eukaryotes", "insects" ]
B
Many prokaryotes have an extra layer, called a capsule, outside the cell wall. The capsule protects the cell from chemicals and drying out. It also allows the cell to stick to surfaces and to other cells. Because of this, many prokaryotes can form biofilms, like the one shown in Figure below . A biofilm is a colony of ...
sciq
sciq_01_03812
What is the ratio of solutes in a solution to a volume of solvent in a solution known as?
[ "osmolality", "equilibrium", "molality", "molarity" ]
A
Regulation of Water Intake Osmolality is the ratio of solutes in a solution to a volume of solvent in a solution. Plasma osmolality is thus the ratio of solutes to water in blood plasma. A person’s plasma osmolality value reflects his or her state of hydration. A healthy body maintains plasma osmolality within a narrow...
sciq
sciq_01_00306
What group of animals are the largest arthropods?
[ "fish", "spiders", "insects", "birds" ]
C
There are several traits shared by all arthropods. Arthropods have a complete digestive system. They also have a circulatory system and a nervous system. In addition, they have special organs for breathing and excreting wastes. Other traits of arthropods include:.
math_qa
mathqa_03_02707
a cubical block of metal weighs 7 pounds . how much will another cube of the same metal weigh if its sides are twice as long ?
[ "48", "32", "24", "56" ]
D
"for example our cube have a side 1 meter , so we have 1 cubical meter in this cube and this cubical meter weigth 7 pounds if we take cube with side 2 meters we will have 8 cubical meters in this cube 8 meters * 7 pounds = 56 pounds so answer is d and similar but more theoretical approach : if we have sides a and b tha...
math_qa
mathqa_03_03259
how many positive integers , from 2 to 100 , inclusive , are not divisible by even integers greater than 1 ?
[ "5", "6", "8", "10" ]
B
"the no will be of the form 2 ^ n to achieve this . since any other form will have odd no in the prime factorization . hence we need to find solution of n for equation - 1 < 2 ^ n < 101 . 2 ^ 6 = 64 , 2 ^ 7 - 128 hence n can take values from 1 to 6 . hence ans - ( b ) 6"
ARC-Challenge
arc_04_02988
Which of these factors affects how fast a sound wave moves?
[ "the kind of material it is moving through", "the amplitude of the sound wave's vibrations", "the wavelength of the disturbance in the medium", "the type of motion that caused the sound wave to form" ]
A
null
sciq
sciq_01_10383
Which currents distribute heat around the planet and have a large impact on climate?
[ "surface", "wind", "air", "electrical" ]
A
Surface currents are extremely important because they distribute heat around the planet. Surface currents also have a tremendous influence on climate around the globe.
math_qa
mathqa_03_00430
the manufacturing cost of a shoe is rs . 200 and the transportation lost is rs . 500 for 100 shoes . what will be the selling price if it is sold at 20 % gains
[ "s 222", "s 246", "s 220", "s 210" ]
B
"explanation : total cost of a watch = 200 + ( 500 / 100 ) = 205 . gain = 20 % = > sp = 1.2 cp = 1.2 x 205 = 246 answer : b"
sciq
sciq_01_06122
What is made up of a watery substance called cytosol and contains other cell structures such as ribosomes?
[ "cytoskeleton", "plasma", "rna", "cytoplasm" ]
D
Cytoplasm refers to all of the cellular material inside the plasma membrane. Cytoplasm is made up of a watery substance called cytosol and contains other cell structures such as ribosomes.
openbookqa
obqa_02_00144
When the game console's power cable was attached to the wall, electricity ended up in
[ "the plug", "the power cable", "the wall", "the game console" ]
D
sending electricity through a conductor causes electricity to flow through that conductor
sciq
sciq_01_06701
What type of flexion is the bending of the neck or body toward the right or left side?
[ "lateral", "ventral", "orbital", "cylindrical" ]
A
Flexion and Extension Flexion and extension are movements that take place within the sagittal plane and involve anterior or posterior movements of the body or limbs. For the vertebral column, flexion (anterior flexion) is an anterior (forward) bending of the neck or body, while extension involves a posterior-directed m...
math_qa
mathqa_03_04602
one pipe can fill a tank three times as fast as another pipe . if together the two pipes can fill the tank in 36 minutes , then the slower pipe alone will be able to fill the tank in :
[ "144 min", "145 min", "150 min", "200 min" ]
A
"slower pipe alone fill the tank = x faster pipe will fill in x / 3 min 1 / x + 3 / x = 1 / 36 x = 144 min answer a"
openbookqa
obqa_02_03314
A person needs to make a stove run with only energy that will run forever, so they make a
[ "propane stove", "gas stove", "corn stove", "solar stove" ]
D
solar energy is an inexhaustible resource
medmcqa
medmcqa_05_02571
Which of the following the characteristic feature of subdural hematoma -
[ "Convex hyper density", "Biconvex hypo density", "Convexo-concave hypo density", "Concavo-convex hyper density" ]
D
Ans. is 'd' i.e. Concavo-convex hyperdensity .On CT Scan Subdural hematoma - Concavo convex* hyperdensity Epidural hematoma - Biconvex hyperdensity *
sciq
sciq_01_06680
What is the color of mercury oxide?
[ "orange", "green", "yellow", "red" ]
D
Mercury(II) oxide is a red solid. When it is heated, it decomposes into mercury metal and oxygen gas.
ARC-Challenge
arc_04_02637
A company is creating an advertisement for its custom-made guitars. Which of the following statements should be in the advertisement to best emphasize the company's custom production processes?
[ "Our guitars are made using hand tools.", "We make our guitars to your specifications.", "We produce and sell thousands of guitars each year.", "Our guitars are the best quality your money can buy." ]
B
null
math_qa
mathqa_03_01378
if there are 210 workers in a factory , and on a certain day , 198 were present . calculate the percentage that showed up for work ? ( round to the nearest tenth ) .
[ "94.3 %", "95.3 %", "93.3 %", "92.3 %" ]
A
198 / 210 * 100 = 94.28 94.3 % correct answer a
medmcqa
medmcqa_05_04195
Most common site for carcinoid tumor in the abdomen
[ "Appendix", "Liver", "Intestines", "Pancreas" ]
A
.CARCINOID TUMOUR It commonly occurs in appendix (65%), ileum (25%), other pas of GIT and rarely bronchus, testis, ovary. In the small intestine, carcinoids are most often seen within the terminal 2 feet of the ileum. * They arise from the enterochromaffin cells (Kulchitsky cells) found in the crypts of Lieberkuhn. * T...
openbookqa
obqa_02_02471
Which would be most affected by a magnet?
[ "a wooden beam", "a titanium beam", "a plastic beam", "a cotton beam" ]
B
if a magnet is attracted to a metal then that magnet will stick to that metal
sciq
sciq_01_04108
Clubmosses are not true mosses, though, because they have what?
[ "hydrothermal tissue", "vascular tissue", "smooth tissue", "cambrium" ]
B
Clubmosses are so named because they can look similar to mosses ( Figure below ). Clubmosses are not true mosses, though, because they have vascular tissue. The “club” part of the name comes from club-like clusters of sporangia found on the plants. One type of clubmoss is called the "resurrection plant" because it shri...
openbookqa
obqa_02_03122
A horse is outside alone in the middle of summer on a sunny day in a desert. The horse is getting wet. The wetness is coming from
[ "orange juice", "sunshine", "rain", "sweat glands" ]
D
sweat is used for adjusting to hot temperatures by some animals
openbookqa
obqa_02_00447
If a substance can absorb solar energy, then what can or will happen to that substance?
[ "it will see a raising of warmth levels", "heat levels will decrease exponentially", "temperatures will be maintained", "the substance will gradually cool" ]
A
if a substance absorbs solar energy then that substance will increase in temperature
math_qa
mathqa_03_00607
1 * 2 + 2 * 2 ^ 2 + 3 * 2 ^ 3 + 4 * 2 ^ 4 … … … … … … … … + 2012 * 2 ^ 2012
[ "8100312", "8100313", "8100412", "8200312" ]
A
take 2 outside as common we get 2 ( 1 + 2 * 1 ^ 2 + 3 * 1 ^ 3 + . . . . . . . . . 2012 * 1 ^ 2012 ) then 2 ( 1 + 2 + . . . . . 2012 ) we get 8100312 answer : a
ARC-Challenge
arc_04_02322
Which of these best describes how the surface of a beach is formed?
[ "mechanical weathering", "chemical weathering", "mass movement", "volcanic eruption" ]
A
null
ARC-Easy
arc_04_01431
In Rutherford's experiment, what caused some high-energy particles to bounce off the metal, while most pass straight through?
[ "light waves", "magnetic waves", "positive charges", "negative charges" ]
C
null
sciq
sciq_01_11523
What causes the menstrual cycle to be repeated?
[ "uteris", "gravity", "ovaries", "lack of fertilization" ]
D
The menstrual cycle is a series of changes in the reproductive system of mature females that repeats every month on average. It includes changes in the uterus as well as development of an egg and ovulation. If fertilization does not occur, menstruation occurs and the cycle repeats.
ARC-Challenge
arc_04_03139
Which part of a pine tree makes food?
[ "root", "cone", "trunk", "needle" ]
D
null
ARC-Easy
arc_04_02011
Endothermic reactions are reactions that require more energy to start than they give off in the products. Which statement describes an endothermic reaction?
[ "It gives off heat energy and is hot to the touch.", "It absorbs heat energy and is cold to the touch.", "It gives off light energy and produces visible light.", "It gives off water and is wet to the touch." ]
B
null
sciq
sciq_01_09652
Energy constantly changes back and forth between kinetic and what type of energy?
[ "practical", "mechanical", "physical", "potential" ]
D
Energy also constantly changes back and forth between kinetic and potential energy. Kinetic energy is the energy of movement. For example, a ball falling through the air has kinetic energy because it is moving ( Figure below ). The random motion of molecules is due to kinetic energy, and the driving force behind diffus...
math_qa
mathqa_03_03990
one night 16 percent of the female officers on a police force were on duty . if 160 police officers were on duty that night and half of these were female officers , how many female officers were on the police force ?
[ "500", "650", "800", "950" ]
A
"let x be the number of female police officers on the police force . the number of female police officers on duty was 80 . 0.16 x = 80 x = 500 the answer is a ."
sciq
sciq_01_09263
The nephron is the functional unit of what pair of organs?
[ "lungs", "kidneys", "eyes", "ribs" ]
B
Figure 41.6 The nephron is the functional unit of the kidney. The glomerulus and convoluted tubules are located in the kidney cortex, while collecting ducts are located in the pyramids of the medulla. (credit: modification of work by NIDDK).
openbookqa
obqa_02_02359
When tree roots grow, sometimes they
[ "eat worms", "form perfect braids", "strangle people", "break hard objects" ]
D
if a tree is located near a sidewalk then the roots of that tree might crack the sidewalk
sciq
sciq_01_00077
When populations get close to the carrying capacity, what happens to growth?
[ "slows", "spikes", "halts", "dies" ]
A
Populations usually grow bigger when they have what they need. How fast they grow depends on birth and death rates. They grow more slowly as they get close to the carrying capacity. This is the biggest population the environment can support.
sciq
sciq_01_08022
What is required for a decay chain to end?
[ "radioactive cascade", "stable end-product", "unstable end-product", "stable half-life" ]
B
We have talked about the activity and decay of individual isotopes. In the real world, there is a decay chain that takes place until a stable end-product is produced. For U-238, the chain is a long one, with a mix of isotopes having very different half-lives. The end of the chain resides in lead, a stable element that ...
sciq
sciq_01_02829
Define motion.
[ "change of position", "speed of objects", "gravitational pull", "distance traveled" ]
A
Motion is defined as a change of position.
openbookqa
obqa_02_03346
A fallen tree may provide what?
[ "Hope", "Happiness", "Love", "Thriving life" ]
D
if a tree falls then that tree is dead
ARC-Easy
arc_04_00435
A rubber band will make a sound when it is
[ "vibrated.", "stretched.", "cut into pieces.", "shot across a room." ]
A
null
medmcqa
medmcqa_05_04367
Folie a deux is seen in
[ "OCD", "Paranoid", "Hysteria", "Neurasthenia" ]
B
It is shared delusional disorder.
math_qa
mathqa_03_03507
a train is travelling at 48 kmph . it crosses another train having half of its length , travelling in opposite direction at 42 kmph , in 12 seconds . it also passes a railway platform in 45 seconds . what is the length of the platform ?
[ "400 m", "500 m", "600 m", "550 m" ]
A
speed of i train = 48 kmph length of i train = 2 x m speed of sec train = 42 kmph length of seconf train = x m dist = ( 2 x + x ) = 3 x m time = 12 sec = 90 * 5 / 18 = 25 m / s x = 100 length of first train = 2 x = 200 m time taken = 45 sec speed of first train = 48 kmph = 48 * 5 / 18 = 40 / 3 m / s length of the platf...
medmcqa
medmcqa_05_02115
COTPA act is related to
[ "Child abuse", "Cigarette smoking", "Consumer related", "Cocaine" ]
B
The Cigarettes and Other Tobacco Products Act, 2003 or COTPA, 2003 is an Act to prohibit the adveisement of and to provide for the regulation of trade and commerce in, and production, supply and distribution of cigarettes and other tobacco products in India.
math_qa
mathqa_03_00081
in a school of 600 students , 45 % wear blue shirts , 23 % wear red shirts , 15 % wear green shirts , and the remaining students wear other colors . how many students wear other colors ( not blue , not red , not green ) ?
[ "102", "112", "122", "132" ]
A
"45 + 23 + 15 = 83 % 100 – 83 = 17 % 600 * 17 / 100 = 102 the answer is a ."
medmcqa
medmcqa_05_00135
EEG of a teenager with early morning involuntary movements of hands in his sleep noticed by parents. Immunization is complete. What does it indicate?
[ "Juvenile myoclonic epilepsy", "SSPE", "Benign rolandic epilepsy", "Huntington chorea" ]
A
Ans. (a) Juvenile myoclonic epilepsy.
medmcqa
medmcqa_05_01542
Case finding tool which has been stopped as a general measure of case finding in Tuberculosis is:
[ "Sputum microscopy", "Sputum culture", "Mass Miniature radiography", "Tuberculin Testing" ]
C
Mass Miniature radiography
openbookqa
obqa_02_04762
Skidding causes friction, as seen in
[ "rolling a car", "riding a rhino", "running a track", "Nascar races" ]
D
skidding causes friction
sciq
sciq_01_04884
Cells with different functions often differ in what physical property?
[ "weight", "density", "shape", "size" ]
C
Cells come in many different shapes. Cells with different functions often have different shapes.
ARC-Challenge
arc_04_02671
Which best describes a parallel circuit?
[ "Electricity flows along one pathway.", "The flow of electricity comes from one source.", "Electricity flows along more than one pathway.", "The flow of electricity comes from more than one source." ]
C
null
sciq
sciq_01_05063
When referring to genes, what term describes the property of having multiple phenotypic effects?
[ "prototype", "xerophyte", "archetype", "pleiotrophy" ]
D
Many genes have multiple phenotypic effects, a property called pleiotropy.
openbookqa
obqa_02_03762
Special tissues in plants transport minerals throughout what?
[ "flora", "space", "planets", "atmosphere" ]
A
special tissues in plants transport minerals throughout the plant
sciq
sciq_01_04316
What are the chemical formulas for covalent compounds referred to as?
[ "Electron Formulas", "molecular formulas", "magnetic formulas", "nucleus formulas" ]
B
The chemical formulas for covalent compounds are referred to as molecular formulas because these compounds exist as separate, discrete molecules. Typically, a molecular formula begins with the nonmetal that is closest to the lower left corner of the periodic table, except that hydrogen is almost never written first (H2...
sciq
sciq_01_06577
Like the other outer planets, neptune has rings of ice and what?
[ "mercury", "gas", "dust", "glass" ]
C
Like the other outer planets, Neptune has rings of ice and dust. These rings are much thinner and fainter than Saturn's. Neptune's rings may be unstable. They may change or disappear in a relatively short time.
openbookqa
obqa_02_04330
Where's the best place to use water to power a lighthouse?
[ "the tundra", "the ocean", "the desert", "the mountains" ]
B
tidal energy can be used to produce electricity
math_qa
mathqa_03_04192
a train 270 m long , running with a speed of 108 km / hr will pass a tree in
[ "12 sec", "9 sec", "16 sec", "20 sec" ]
B
"sol . speed = ( 108 x 5 / 18 ) m / sec . = 30 m / sec . time taken = ( 270 x 1 / 30 ) sec = 9 sec answer b"
math_qa
mathqa_03_00296
jaime earned enough money by selling seashells at 35 cents each to buy several used paperback books at 55 cents each . if he spent all of the money he earned selling seashells to buy the books , what is the least number of seashells he could have sold ?
[ "5", "11", "17", "22" ]
D
let ' s test answer d : 22 seashells . . . . with 22 seashells , jamie would have 22 ( 35 ) = 770 cents . this would allow him to buy 14 books for 770 cents total , with no money left over . this is an exact match for what we were told , so this must be the answer . final answer : [ reveal ] spoiler : d
sciq
sciq_01_07994
What determines which type of precipitation falls in the atmosphere?
[ "air density", "air temperature", "time of day", "moon phase" ]
B
Why does it snow instead of rain? Air temperature determines which type of precipitation falls. Rain falls if the air temperature is above freezing (0° C or 32° F). Frozen precipitation falls if the air or ground is below freezing. Frozen precipitation may fall as snow , sleet , or freezing rain . Below, you can see ho...
sciq
sciq_01_00481
Does climate change have a positive or negative effect on reproductive success?
[ "positive", "neither", "both", "negative" ]
D
math_qa
mathqa_03_03840
it takes joey the postman 1 hours to run a 2 mile long route every day . he delivers packages and then returns to the post office along the same path . if the average speed of the round trip is 5 mile / hour , what is the speed with which joey returns ?
[ "10", "12", "13", "14" ]
A
"let his speed for one half of the journey be 2 miles an hour let the other half be x miles an hour now , avg speed = 5 mile an hour 2 * 2 * x / 2 + x = 5 4 x = 5 x + 10 = > x = 10 a"
medmcqa
medmcqa_05_02533
In gestational trophoblastic disease, metastases most commonly occur to:
[ "Brain", "Liver", "Lungs", "Bone" ]
C
Ans-C Lungs Shaw 15th/259 Hydatidiform moles are abnormal pregnancies characterized histologically by aberrant changes within the placenta. Specifically, the chorionic villi in these placentas show varying degrees of trophoblastic proliferation and edema of the villous stroma. They are of two types: partial and complet...
openbookqa
obqa_02_04049
Which is likely the least helpful for the good bacteria that help your body?
[ "hot showers", "eating well", "keeping hydrated", "using probiotics" ]
A
good bacteria grow on the skin
openbookqa
obqa_02_01853
A horse in a field under the summer sun was glistening wet even though it hadn't rained.
[ "the other horses were licking that horse", "sweat glands released liquid to cool off the horse", "sweat glands dried up", "The horse needed a shower and was getting oily" ]
B
sweat is used for adjusting to hot temperatures by some animals
sciq
sciq_01_06541
What is most of the water used in agriculture used for?
[ "sowing", "construction", "cleaning", "irrigation" ]
D
Many crops are grown where there isn’t enough rainfall for plants to thrive. For example, crops are grown in deserts of the American southwest. How is this possible? The answer is irrigation. Irrigation is any way of providing extra water to plants. Most of the water used in agriculture is used for irrigation. Livestoc...
math_qa
mathqa_03_04407
14 , 28 , 20 , 40 , 32 , 64 , . . . ?
[ "10", "25", "56", "21" ]
C
"first , multiply by 2 and then subtract 8 . 14 14 * 2 = 28 28 - 8 = 20 20 * 2 = 40 40 - 8 = 32 32 * 2 = 64 64 - 8 = 56 answer : c"
sciq
sciq_01_07078
In what route do water and solutes move along the continuum of cytosol?
[ "symplastic", "hydrophylic", "nonvascular", "hydrophobic" ]
A
medmcqa
medmcqa_05_03887
Gastric motility decreases in A/E-
[ "Diabetes", "Upper abdominal surgery", "Head injury", "Hypehyroid" ]
D
Small intestinal motility is disordered in conditions that affect the smooth muscle or nerves of the intestine. Many cases are 'primary' (idiopathic), while others are 'secondary' to a variety of disorders or drugs. Clinical features There are recurrent episodes of nausea, vomiting, abdominal discomfo and distension, o...
sciq
sciq_01_02797
Once cells _______, they can no longer divide
[ "mature", "migrate", "propagate", "differentiate" ]
D
Most plants continue to grow throughout their lives. Like other multicellular organisms, plants grow through a combination of cell growth and cell division. Cell growth increases cell size, while cell division (mitosis) increases the number of cells. As plant cells grow, they also become specialized into different cell...
sciq
sciq_01_01334
What part of the ear is often described as a bony labyrinth?
[ "outer ear", "inner ear", "solid ear", "embedded ear" ]
B
The inner ear is often described as a bony labyrinth, as it is composed of a series of canals embedded within the temporal bone. It has two separate regions, the cochlea and the vestibule, which are responsible for hearing and balance, respectively. The neural signals from these two regions are relayed to the brain ste...
medmcqa
medmcqa_05_02038
Reverse CAMP test is positive for ?
[ "Streptococcus agalactiae", "Listeria manocytogenes", "Clostridium perfringens", "Vibrio parahemolyticus" ]
C
Ans. is 'c' i.e.,Clostridium perfringens CAMP positive- Area of increased hemolysis (arrow head) around staphylococcus streaks (by streptococcus agalactiae).CAMP test is also positive in Listeria monocytogenes, Reverse CAMP test is positive in Clostridium perfringens.Reverse CAMP test : It is used to differentiate Cl p...
sciq
sciq_01_02736
As roots grow longer they will always do what?
[ "change direction", "grow downward", "get larger", "get thicker" ]
B
Roots have primary and secondary meristems for growth in length and width. As roots grow longer, they always grow down into the ground. Even if you turn a plant upside down, its roots will try to grow downward. How do roots “know” which way to grow? How can they tell down from up? Specialized cells in root caps are abl...
math_qa
mathqa_03_04094
a sum of rs . 1870 has been divided among a , b and c such that a gets of what b gets and b gets of what c gets . b ’ s share is :
[ "rs . 120", "rs . 160", "rs . 240", "rs . 330" ]
D
"explanation let c ’ s share = rs . x then , b ’ s share = rs . x / 4 , a ’ s share = rs . ( 2 / 3 x x / 4 ) = rs . x / 6 = x / 6 + x / 4 + x = 1870 = > 17 x / 12 = 1870 = > 1870 x 12 / 17 = rs . 1320 hence , b ’ s share = rs . ( 1320 / 4 ) = rs . 330 . answer d"
medmcqa
medmcqa_05_00587
Fick's operation and Cody Tack's procedure is for ?
[ "Otosclerosis", "Meniere's disease", "Atrophic rhinitis", "Benign positional paroxysmal veigo" ]
B
Ans. is 'b' i.e., Meniere's disease Meniere's disease Surgical management Surgical therapy for meneire's disease is reserved for medical treatment failures and is otherwise controversial. Surgical procedures can be divided into two main categories Destructive surgical procedures Nondestructive surgical procedures Destr...
openbookqa
obqa_02_02468
A hurricane will develop largest nearer a sea because of
[ "water color", "liquid amounts", "water smell", "fluid uiclarity" ]
B
an ocean is a source of heat and moisture for a hurricane
math_qa
mathqa_03_01935
a man complete a journey in 40 hours . he travels first half of the journey at the rate of 20 km / hr and second half at the rate of 30 km / hr . find the total journey in km .
[ "960 km", "224 km", "230 km", "232 km" ]
A
"0.5 x / 20 + 0.5 x / 30 = 40 - - > x / 20 + x / 30 = 80 - - > 5 x = 60 x 80 - - > x = ( 60 x 80 ) / 5 = 960 km . answer : a"
medmcqa
medmcqa_05_01402
For oral iron supplements used for iron deficiency anemia
[ "Tolerable dose will deliver 40 to 60 mg of iron per day", "Mass of total salt is impoant in determining Daily Dose", "Treatment should be stopped as soon as normal hemoglobin levels is reached", "Desired rate of hemoglobin improvement is 0.5 mg per day" ]
A
Refer Katzung 10/e p 530 Tolerable doses of elemental iron is 200mg per day Mass of elemental iron is more impoant in determining Daily Dose Treatment with oral iron should be continued even after reaching the desired hemoglobin level
sciq
sciq_01_11597
What system of the body is responsible for ultimately ridding it of waste and excess water?
[ "respiratory system", "circulatory system", "excretory system", "digestive system" ]
C
Toxic waste must be disposed of properly or there can be serious consequences. Now, your waste should not be as colorful or toxic as shown here (if it is, get yourself to a doctor as soon as possible), but it still needs to be removed from you. And that is the role of the excretory system. The excretory system gets rid...
openbookqa
obqa_02_03166
If a thing that was huge and hard is suddenly pooling at your feet,
[ "it is brick", "it was warmed", "it is froze", "it is oak" ]
B
melting means changing from a solid into a liquid by adding heat energy
medmcqa
medmcqa_05_03378
A girl presents with; primary amenorrhea; grade V thelarche, grade II pubarche; no axillary hair: likely diagnosis is :
[ "Testicular feminisation syndrome", "Mullerian agenesis", "Turners syndrome", "Gonadal dysgenesis" ]
A
Testicular feminisation syndrome
sciq
sciq_01_04384
Restoring nitrogen to the soil is one reason for what agricultural practice?
[ "crop rotation", "plowing", "sowing", "irrigation" ]
A
sciq
sciq_01_03274
Carbohydrates are an important group of biological molecules that includes sugars and these?
[ "fats", "proteins", "vitamins", "starches" ]
D
Carbohydrates are an important group of biological molecules that includes sugars and starches.
openbookqa
obqa_02_04660
The digestive system digests what for the body?
[ "water", "metal", "sustenance", "rocks" ]
C
the digestive system digests food for the body
sciq
sciq_01_11238
What type of tissue covers the outside of a plant in a single layer of cells called the epidermis?
[ "anterior", "dorsal", "dermal", "mucous" ]
C
The three types of plant cells are found in each of the major types of plant tissues: dermal, ground, and vascular tissues. Dermal tissue covers the outside of a plant in a single layer of cells called the epidermis. It mediates most of the interactions between a plant and its environment. Ground tissue makes up most o...
medmcqa
medmcqa_05_00572
In Wilm's tumor the following leads to emergence of resistance to chemotherapy -
[ "Nephrogenic rests", "Monophasic morphology", "Anaplasia", "Capsular infiltration" ]
C
Ans. is 'c' i.e., Anaplasia
medmcqa
medmcqa_05_02937
Lateral pressure theory for tongue thrust habit was given by:
[ "Finn", "Bridgeman", "Benjamin", "Pinkham" ]
B
Bridgeman put forward the lateral pressure theory for tongue thrust habit in 1859.
openbookqa
obqa_02_01144
My dad gave me
[ "my head windows", "a building", "air", "the sun" ]
A
offspring receive genes from their parents through DNA
ARC-Challenge
arc_04_03131
The weather forecast says a heavy snowstorm is coming later today. Which weather observation is likely just before the snow?
[ "clear sky", "thick grey clouds", "small white clouds", "warm temperature" ]
B
null
sciq
sciq_01_07696
An increase in the body's cholesterol levels can lead to your arteries filling with what?
[ "fat", "plaque", "marble", "triglycerides" ]
B
Ways to prevent atherosclerosis include eating healthy foods, getting plenty of exercise and not smoking. A diet high in saturated fat and cholesterol can raise your body's cholesterol levels, which can lead to increased plaque in your arteries. Cholesterol and saturated fat are found mostly in animal products, such as...
medmcqa
medmcqa_05_00009
In a patient with starvation for 72 hrs which of the following would be seen:
[ "Increased glycogenolysis", "Increased ketosis due to break down of fats", "Degradation of proteins", "Increased gluconeogenesis" ]
D
D i.e. Increased GluconeogenesisEnergy is derived mainly from glycogenolysis (initial few hours) -gluconeogenesis (upto 72 hours) -*Degradation of fast (3 days - 2weeks) -*Break down of tissue protein (last 1 weeks)Q
medmcqa
medmcqa_05_01468
Thinnest part of lens is?
[ "Anterior pole", "Posterior pole", "Posterior capsule", "Apex" ]
B
ANSWER: (B) Posterior poleREF: Cataract and refractive surgery: Volume 1; Volume 1 by Thomas Kohnen (Dr. med.), Thomas Kohnen, Douglas D. Koch page 134, Age-Related Changes Of The Human Eye by Carlo Cavallotti, Luciano Cerulli page 68In all age groups, the thinnest part of the lens capsule was found at the posterior po...
sciq
sciq_01_06584
Hydrogen chloride contains one atom of hydrogen and one atom of what?
[ "calcium", "magnesium", "nitrogen", "chlorine" ]
D
Hydrogen chloride contains one atom of hydrogen and one atom of chlorine. Because the.
ARC-Challenge
arc_04_02630
A pharmaceutical company develops a new antibiotic to treat pneumonia. After limited testing, the researchers conclude that the antibiotic seems to be effective. How can the researchers strengthen their conclusions?
[ "Test the antibiotic on human volunteers.", "Publish their results in a medical journal.", "Ask an independent lab to retest the antibiotic.", "Test the effectiveness of the antibiotic at killing other bacteria." ]
C
null