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sciq
sciq_01_11027
Hormones cause cellular changes by binding to receptors on these?
[ "fighter cells", "reach cells", "target cells", "able cells" ]
C
37.2 How Hormones Work Hormones cause cellular changes by binding to receptors on target cells. The number of receptors on a target cell can increase or decrease in response to hormone activity. Hormones can affect cells directly through intracellular hormone receptors or indirectly through plasma membrane hormone rece...
sciq
sciq_01_08585
What are the 3 types of tissues that modern plants have?
[ "dermal, ground, and vascular", "sturdy , ground , and vascular", "sinuous , ground , and vascular", "cambrium, epidermis, and ground" ]
A
Modern plants have three different types of tissues. They are called dermal, ground, and vascular tissues. Each type of tissue has a different function.
medmcqa
medmcqa_05_00357
Stocker&;s line is seen in -
[ "Pinguencula", "pterygium", "Cngenital Ocular Melanosis", "Conjunctival epithelial melanosis" ]
B
Image : stockers line in pterygium Reference : AK Khurana 7th edition page :89
openbookqa
obqa_02_01663
Living things are in grave danger from
[ "captain crunch", "rainbows", "raging infernos", "pink teddy bears" ]
C
fire causes harm to living things
ARC-Challenge
arc_04_02811
A plant gets the energy it needs from the Sun. The plant uses about ten percent of the energy to carry on its life functions. The plant transfers approximately another ten percent of the energy to the consumers in a food chain. What happens to most of the remaining energy?
[ "It is reabsorbed by the Sun.", "It is recycled by decomposers.", "It is stored in soil for later use.", "It is released into the ecosystem as heat." ]
D
null
ARC-Easy
arc_04_01751
Which type of rock is formed when hot lava cools?
[ "coal", "igneous", "limestone", "metamorphic" ]
B
null
medmcqa
medmcqa_05_01943
The most common site for myocardial infarction is
[ "Left atrium", "Left ventricle", "Right atrium", "Right ventricle" ]
B
Ans. is b i.e., Left ventricle
sciq
sciq_01_01716
How long can carbon be stored in sedimentary rock?
[ "millions of years", "22 weeks", "less than 1000 years", "around 10,000 years" ]
A
Carbon cycles quickly between organisms and the atmosphere. Cellular respiration releases carbon into the atmosphere as carbon dioxide. Carbon is also released when organisms decompose. Human actions, such as the burning of fossil fuels, also release carbon into the atmosphere. Natural processes, such as volcanic erupt...
math_qa
mathqa_03_04905
a certain bus driver is paid a regular rate of $ 15 per hour for any number of hours that does not exceed 40 hours per week . for any overtime hours worked in excess of 40 hours per week , the bus driver is paid a rate that is 75 % higher than his regular rate . if last week the bus driver earned $ 982 in total compens...
[ "56", "40", "44", "48" ]
A
"for 40 hrs = 40 * 15 = 600 excess = 982 - 600 = 382 for extra hours = . 75 ( 15 ) = 11.25 + 16 = 27.25 number of extra hrs = 382 / 27.25 = 14 total hrs = 40 + 14 = 56 answer a 56"
openbookqa
obqa_02_02907
If you're suffering from hypothermia it would help to get close to
[ "an air conditioner", "a boat", "a mountain", "an oven" ]
D
an oven is a source of heat
sciq
sciq_01_04241
The leaves of all of what type of plants have two basic parts in common: the blade and petiole?
[ "perennials", "evergreen", "deciduous", "flowering plants" ]
D
Flowering vascular plants also have diverse leaves. However, the leaves of all flowering plants have two basic parts in common: the blade and petiole (see Figure above ). The blade of the leaf is the relatively wide, flat part of the leaf that gathers sunlight and undergoes photosynthesis. The petiole is the part that ...
sciq
sciq_01_08595
What molecule is used for most energy functions in organisms?
[ "DNA or deoxyribonucleic acid", "RNA or ribonucleic acid", "ADP or Adenosine Diphosphate", "atp or adenozine triphosphate" ]
D
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy.
sciq
sciq_01_00732
In what unit is speed usually measured?
[ "miles per hour", "radians", "Celcius", "calories" ]
A
sciq
sciq_01_07028
Life on earth is carbon-based. organisms need not only energy but also carbon ________ for building bodies?
[ "ions", "atoms", "monoxide", "crystals" ]
B
Life on Earth is carbon-based. Organisms need not only energy but also carbon atoms for building bodies. For nearly all life, the ultimate source of carbon is carbon dioxide (CO 2 ), an inorganic molecule. CO 2 makes up less than 1% of the Earth’s atmosphere.
medmcqa
medmcqa_05_01426
Anthrax bacilli differs from anthracoid bacilli by being:
[ "Non-capsulated", "Strict aerobe", "Non-motile", "Hemolytic colonies on blood" ]
C
Ans. is 'c' i.e., Non motileRef:(Ananthanarayan, 8th/e, p. 393; 9th/e, p. 390-91)Differentiating features between anthrax and anthracoid bacilliAnthrax BacilliAnthracoid Bacilli* Nonmotile* Generally motile* Capsulated* Noncapsulated* Grow in long chains* Grow in short chains* Medusa head colony* Not present* No growth...
math_qa
mathqa_03_03715
robert is travelling on his cycle andhas calculated to reach point a at 2 pm . if he travels at 10 kmph , he will reach there at 12 pm if he travels at 15 kmph . at what speed must he travel to reach a at 1 pm ?
[ "8 kmph", "9 kmph", "12 kmph", "14 kmph" ]
C
let the distance travelled by x km . then , x - x = 2 10 15 3 x - 2 x = 60 x = 60 km . time taken to travel 60 km at 10 km / hr = 60 hrs = 6 hrs . 10 so , robert started 6 hours before 2 p . m . i . e . , at 8 a . m . required speed = 60 kmph . = 12 kmph . 5 c
openbookqa
obqa_02_00888
running turns carbohydrates into
[ "fat", "sweat", "motion and heat", "protein" ]
C
moving changes stored energy into motion and heat
sciq
sciq_01_09417
In addition to glucose, what gas is used during cellular respiration?
[ "oxygen", "methane", "hydrogen", "nitrogen" ]
A
Cellular respiration uses oxygen in addition to glucose. It releases carbon dioxide and water as waste products. Cellular respiration actually "burns" glucose for energy. However, it doesn't produce light or intense heat like burning a candle or log. Instead, it releases the energy slowly, in many small steps. The ener...
openbookqa
obqa_02_00854
braille is read by using your fingers to
[ "hold the book", "hold the flashlight", "turn the page", "feel the words" ]
D
the shape of an object can be discovered through feeling that object
sciq
sciq_01_07128
When gametes unite during fertilization, the resulting zygote inherits two of what for each gene, one from each parent?
[ "genomes", "molecules", "chromosomes", "alleles" ]
D
When gametes unite during fertilization, the resulting zygote inherits two alleles for each gene. One allele comes from each parent. The alleles an individual inherits make up the individual’s genotype . The two alleles may be the same or different. As shown in Table below , an organism with two alleles of the same typ...
sciq
sciq_01_06475
Getting the same result when an experiment is repeated is called what?
[ "mutation", "replication", "repetition", "initiation" ]
B
Scientists also have to “check their work. ” The results of an investigation are not likely to be well accepted unless the investigation is repeated—usually many times—and the same result is always obtained. Getting the same result when an experiment is repeated is called replication . If research results can be replic...
openbookqa
obqa_02_00326
Which is most likely to cause an animal to shiver?
[ "5 degrees celsius", "42 degrees Fahrenheit", "6 degrees Celsius", "8 degrees Celsius" ]
A
cold temperatures cause animals to shiver
medmcqa
medmcqa_05_04064
65yrs old male complains of lump on . side lower back associated with blood in urine, wt. loss and night sweats. On investigation it was diagnosed to be RCC 8cm involving abdominal lymph nodes but no distant metastasis. What should be most appropriate management of this patient?
[ "Radiation followed by nephrectomy", "Chemotherapy", "Radiation", "Radical nephrectomy" ]
D
Renal cell cancer is not responsive to radiation and chemotherapy Radical nephrectomy should be done for localized renal cancer Radical Nephrectomy should be done in this patient as the nodes that are suspected of having metastatic disease are just because they are showing reactive inflammation.
sciq
sciq_01_03028
What produces sound waves that travel outward in all directions in water?
[ "echo chamber", "echo sounders", "ultrasound machines", "amplifiers" ]
B
During World War II, battleships and submarines carried echo sounders. Their goal was to locate enemy submarines ( Figure below ). Echo sounders produce sound waves that travel outward in all directions. The sound waves bounce off the nearest object and then return to the ship. Scientists know the speed of sound in sea...
sciq
sciq_01_10443
What is a hydrocarbon in which the carbon chain joins to itself in a ring?
[ "asymmetrical hydrocarbon", "acid hydrocarbon", "cyclic hydrocarbon", "circular hydrocarbon" ]
C
A cyclic hydrocarbon is a hydrocarbon in which the carbon chain joins to itself in a ring. A cycloalkane is a cyclic hydrocarbon in which all of the carbon-carbon bonds are single bonds. Like other alkanes, cycloalkanes are saturated compounds. Cycloalkanes have the general formula of C n H 2n . The simplest cycloalkan...
sciq
sciq_01_08089
What instrument made it possible to study pressure quantitatively?
[ "thermometer", "anemometer", "barometer", "seismograph" ]
C
The thermometer was developed a short time after the barometer made it possible to study pressure in a quantitative manner. Although crude thermometers had been available for quite some time, Daniel Fahrenheit constructed a more accurate thermometer in 1724 using mercury in glass. Because the height of the mercury in t...
sciq
sciq_01_01119
What is the hardest of all minerals?
[ "titanium", "gold", "diamonds", "platinum" ]
C
Diamonds like the one pictured in the Figure below are the hardest of all minerals. Is a diamond a crystalline or an amorphous solid? How do you know?.
ARC-Easy
arc_04_00934
Jennifer has collected rocks while hiking. As she attempts to classify her rocks, which will she put in the pile of sedimentary rocks?
[ "Black-and-gray crystalline rocks", "Shiny rocks with smooth textures", "Rocks with visible pieces of shells in them", "Rocks with small interlocking crystals in them" ]
C
null
ARC-Easy
arc_04_00834
A water wave that occurs in an ocean is an example of which type of wave?
[ "electromagnetic", "gravitational", "transverse", "seismic" ]
C
null
ARC-Challenge
arc_04_02439
A scientist on a field trip discovered a new organism. She examined its cells under a microscope and observed several different structures, including a nucleus, a cell wall, and some chloroplasts. This organism would correctly be classified in which of the following kingdoms?
[ "Animalia", "Monera", "Plantae", "Fungi" ]
C
null
sciq
sciq_01_08932
What term is used to describe cells without a nucleus?
[ "unicellular", "prokaryotic", "Simple", "monophyletic" ]
B
Prokaryotic cells are cells without a nucleus.
sciq
sciq_01_05905
Sodium is an example of what sort of thing that cannot exist by itself in nature?
[ "element", "aspect", "compound", "concept" ]
A
Most of the elements we know about do not exist freely in nature. Sodium cannot be found by itself (unless we prepare it in the laboratory) because it interacts easily with other materials. On the other hand, the element helium does not interact with other elements to any extent. We can isolate helium from natural gas ...
openbookqa
obqa_02_04892
A learned behavior is exhibited when
[ "squinting in bright light", "nailing up a picture frame", "blinking and gulping air", "inhaling and exhaling during sleep" ]
B
doing chores is a learned characteristic
sciq
sciq_01_03750
What method is used to map the earth on flat paper?
[ "surveying", "calculations", "forecasts", "projections" ]
D
Earth is a round, three-dimensional ball. In a small area, Earth looks flat, so it is not hard to make accurate maps of a small place. When mapmakers want to map the round Earth on flat paper, they use projections. What happens if you try to flatten out the skin of a peeled orange? Or if you try to gift wrap a soccer b...
openbookqa
obqa_02_03673
Elimination of their body's waste is
[ "a rare trait among living things", "something that rarely happens for most mammals", "a commonality all life forms share", "unnecessary for smaller organisms" ]
C
all living things eliminate waste
sciq
sciq_01_00663
Fossil fuel consumption is a major contributor to global emissions of what gas?
[ "oxygen", "carbon dioxide", "carbon monoxide", "methane" ]
B
Global carbon dioxide emissions from fossil fuel consumption and cement production. The black line represents all emission types combined. The colored lines show emissions from individual fossil fuels.
openbookqa
obqa_02_00776
Taking temperature is basically when
[ "looking outside at the weather", "degrees of warmth are noted", "measuring how humid the air is", "how hot it is is discussed" ]
B
temperature is a measure of heat energy
openbookqa
obqa_02_02653
Where would rocks be the smoothest?
[ "where thunder was heard", "where water has flowed for years", "where wind has blown for days", "where the human population is the highest" ]
B
contact between rocks over long periods of time causes rocks to smooth
openbookqa
obqa_02_02527
When would you want a radiator the most?
[ "winter", "spring", "fall", "summer" ]
A
a radiator is a source of heat
medmcqa
medmcqa_05_03167
Abnormal excretory function of hepatocytes assessed by -
[ "Increased FT", "Increased ALT", "Increased Alkaline Phosphatase", "Increased gamma GT" ]
C
Serum alkaline phosphatase is produced by many tissues and is excreted in the bile.Elevation occurs in case of biliary tract obstruction Reference Harsh mohan page 595
sciq
sciq_01_08101
What kind of weathering changes the size of a mineral or rock but does not change its chemical composition?
[ "radiation", "mechanical weathering", "molecular weathering", "chemical reaction" ]
B
The weathering of rocks and minerals can be mechanical or chemical. Mechanical weathering changes the size of a mineral or rock. Mechanical weathering does not change the chemical composition of that material. Chemical weathering changes the composition of a mineral or rock. Different types of weathering can alter the ...
openbookqa
obqa_02_00962
If a rub two rocks together after awhile they will start to
[ "Get smooth", "Become butterflies", "Become art", "Make a chair" ]
A
contact between rocks over long periods of time causes rocks to smooth
medmcqa
medmcqa_05_04439
Which of the following has gap junctions?
[ "Skeletal muscle", "Smooth muscle", "Choroid plexus", "Renal tubular epithelium" ]
B
Free passage of ions occurs across gap junctions, from one cell to the next, and so on. Cells connected by gap junctions are said to be 'electrically coupled'. The cells that are at some distance from blood vessels are also connected by gap junctions. Such cells can derive nutrition (from cell to cell) gap junctions. C...
math_qa
mathqa_03_03571
a man spends 1 / 3 rd of his salary on food . he spends 1 / 4 th on rent and 1 / 5 th on cloths . if he is left with 1760 , then who much salary does he earn
[ "8223", "8123", "8323", "8423" ]
B
let total salary be x a / q = > x = ( x / 3 ) + ( x / 4 ) + ( x / 5 ) + 1760 = > x - 47 x / 60 = 1760 = > 13 x / 60 = 1760 = > x = 1760 * 60 / 13 = > x = 8123 ( approax ) answer : b
openbookqa
obqa_02_00721
Plants derive what from soil?
[ "pollination and germination", "life sustaining substances", "roots and oxygen", "oxygen and argon" ]
B
soil contains nutrients for plants
sciq
sciq_01_05347
The number of electrons in the outer energy level determines what property of nonmetals?
[ "vibration", "permeability", "density", "reactivity" ]
D
Some nonmetals are very reactive, whereas others are not reactive at all. It depends on the number of electrons in their outer energy level.
medmcqa
medmcqa_05_02666
Endocater is:
[ "1st generation apex locator.", "2nd generation apex locator.", "3rd generation apex locator.", "4th generation apex locator." ]
B
APEX Locators:
sciq
sciq_01_05152
What kind of metals have perplexing patterns of electron distribution that don’t always follow the electron filling rules?
[ "transformation", "variating", "solution", "transition" ]
D
The transition metals are an interesting and challenging group of elements. They have perplexing patterns of electron distribution that don’t always follow the electron filling rules. Predicting how they will form ions is also not always obvious.
math_qa
mathqa_03_04338
a train covers a distance of 12 km in 10 minutes . if it takes 7 seconds to pass a telegraph post , then the length of the train is
[ "100 m", "120 m", "140 m", "160 m" ]
C
"explanation : speed = 12 / 10 x 60 km / hr = 72 x 5 / 18 m / sec = 20 m / sec . length of the train = ( speed x time ) = ( 20 x 7 ) m = 140 m answer : option c"
medmcqa
medmcqa_05_01049
Which of the following is sign of severe Dehydration in a child
[ "Lethargy", "Irritability", "Increased duration of skin pinch", "Suken eyes" ]
A
Sunken eyes, mouth and tongue very dry , condition lethargy ,skin pinch goes back very slowly The patient has 2 / more signs there is severe dehydration Ref: Ghai pediatrics eighth edition pg no 293
sciq
sciq_01_05635
What part of a bird is adapted for the food it eats?
[ "head", "eye", "beak", "teeth" ]
C
Bird beaks are generally adapted for the food they eat. For example, the sharp, hooked beak of a raptor is well suited for killing and tearing apart prey. The long beak of the hummingbird in Figure below co-evolved with the tube-shaped flowers from which it sips nectar.
openbookqa
obqa_02_01539
melting ice may be formed by
[ "the moon", "temp change", "an iceberg", "a reaction" ]
B
temperature changing can cause phase changes
math_qa
mathqa_03_04319
car a is 10 miles behind car b , which is traveling in the same direction along the same route as car a . car a is traveling at a constant speed of 58 miles per hour and car bis traveling at a constant speed of 50 miles per hour . how many hours will it take for car a to overtake and drive 8 miles ahead of car b ?
[ "1.5", "2.25", "2.75", "2.5" ]
B
"relative speed of car a is 58 - 50 = 8 miles per hour , to catch up 10 miles and drive 8 miles ahead so to drive 18 miles it ' ll need 18 / 8 = 2.25 hours . answer : b"
math_qa
mathqa_03_04854
one robot builds a robot in 1 hour , another one builds a robot in 2 hours . the 2 robots work together and when a new robot is complete , it joins the others , working at a constant rate of one robot in 2 hours . how much time will it take until there are 6 robots altogether , if the robots build only one robot at a t...
[ "70 min", "94 min", "109 min", "114 min" ]
D
"first the 2 robots work at the rate of 1 + 1 / 2 = 3 / 2 so they complete one robot in 2 / 3 rd of an hour = 40 minutes - ( 1 ) now the 3 robots work together at the rate of 1 + 1 / 2 + 1 / 2 = 4 / 2 = 2 / 1 so they complete one robot in 1 / 2 an hour , i . e 30 minutes - ( 2 ) now the 4 robots work together at the ra...
openbookqa
obqa_02_02652
Where would you find a less than average amount of biodiversity compared to other biomes?
[ "a jungle", "the arctic", "a forest", "a rain forest" ]
B
cold environments contain few organisms
sciq
sciq_01_05120
The grasp reflex in humans is an example of what kind of behavior?
[ "trait", "innate", "habit", "inclination" ]
B
One of the few innate behaviors in human beings is the grasp reflex. It occurs only in babies.
math_qa
mathqa_03_01870
a cistern normally takes 6 hours to be filled by a tap but because of a leak , 2 hours more . in how many hours will the leak empty a full cistern ?
[ "20 hours", "24 hours", "26 hours", "18 hours" ]
B
∵ cistern fill in 6 hours . ∴ in 1 hour , filled part = 1 ⁄ 6 th now , due to leakage , filled part in 1 hour = 1 ⁄ 8 th part of the cistern emptied , due to leakage in 1 hour = 1 ⁄ 6 - 1 ⁄ 8 = 1 ⁄ 24 th ∴ the leakage will empty the full cistern in 24 hrs . answer b
openbookqa
obqa_02_02005
A cow eats some hay, an apple and a piece of bread. In its tummy
[ "the food rots", "the food dissolves", "the food melts", "the food grows" ]
B
the digestive system breaks food into nutrients for the body
openbookqa
obqa_02_03522
A pulley is used to lift a flag on a flagpole by
[ "putting something in the air", "yanking string up a wheel", "moving a rope sideways", "moving things with wheels" ]
B
a pulley is used for lifting objects
sciq
sciq_01_10081
When a host attacks a parasitic bacteria, the bacteria release what to surround the cell wall?
[ "layer of slime", "pathogens", "protoplasma", "bacteriophages" ]
A
Some bacteria depend on a host organism for energy and nutrients. These bacteria are known as parasites . If the host starts attacking the parasitic bacteria, the bacteria release a layer of slime that surrounds the cell wall. This slime offers an extra layer of protection.
sciq
sciq_01_03769
About 50% of all animal species died off between the mesozoic and which other era?
[ "cenozoic", "cretaceous", "jurassic", "precambrian" ]
A
The most famous mass extinction was 65 million years ago. Between the Mesozoic Era and the Cenozoic Era, about 50% of all animal species died off. This mass extinction is when the dinosaurs became extinct. Most scientists think that the extinction was caused by a giant meteorite that struck Earth. The impact heated the...
sciq
sciq_01_04866
Kelvin is a temperature measure in which the lowest temperature is what?
[ "anomalous zero", "definitive zero", "absolute zero", "accurate zero" ]
C
Kelvin is a temperature measure in which the lowest temperature is absolute zero.
sciq
sciq_01_10855
Consumers are organisms that depend on other organisms for what?
[ "food", "knowledge", "shelter", "reproduction" ]
A
Consumers are organisms that depend on other organisms for food. They take in organic molecules by essentially “eating” other living things. They include all animals and fungi. (Fungi don't really “eat”; they absorb nutrients from other organisms. ) They also include many bacteria and even a few plants, such as the pit...
sciq
sciq_01_08337
Which instruments are used to measure the angle of the slope of a volcano?
[ "altimeter", "tiltmeters", "compass", "calipers" ]
B
All that magma and gas pushing upwards can make the volcano’s slope begin to swell. Ground swelling may change the shape of a volcano or cause rock falls and landslides. Most of the time, the ground tilting is not visible. Scientists detect it by using tiltmeters, which are instruments that measure the angle of the slo...
math_qa
mathqa_03_04372
an equal number of desks and bookcases are to be placed along a library wall that is 15 meters long . each desk is 2 meters long , and each bookshelf is 1.5 meters long . if the maximum possible number of desks and bookcases are to be placed along the wall , then the space along the wall that is left over will be how m...
[ "0.5", "1", "1.5", "2" ]
B
"let x be the number of desks and bookcases that are placed along the library wall . 2 x + 1.5 x < 15 3.5 x < 15 since x is a non negative integer , the largest number x can be is 4 . when x is 4 , the desks and bookcases take up 3.5 * 4 = 14 m , leaving 1 m of empty space . thus , i believe the answer is b ) 1"
math_qa
mathqa_03_03440
for each month of a given year except december , a worker earned the same monthly salary and donated one - tenth of that salary to charity . in december , the worker earned n times his usual monthly salary and donated one - fourth of his earnings to charity . if the worker ' s charitable contributions totaled one - eig...
[ "8 / 5", "5 / 2", "3", "22 / 10" ]
D
"let monthly salary for each of the 11 months except december was x , then 11 x * 1 / 10 + nx * 1 / 4 = 1 / 8 ( 11 x + nx ) ; 11 / 10 + n / 4 = 1 / 8 ( 11 + n ) = > 44 + 10 n / 40 = 11 + n / 8 352 + 80 n = 440 + 40 n = > 40 n = 88 n = 88 / 40 = 22 / 10 answer : d ."
math_qa
mathqa_03_04675
how many positive integers less than 50 are there such that they are multiples of 9 ?
[ "5", "6", "4", "8" ]
A
"number of multiples of 9 = > 45 - 9 / 9 + 1 = 5 answer is a"
openbookqa
obqa_02_02350
A person wanting to find a live bear in a forest will have difficulty because bears
[ "avoid humanity", "are domesticated", "are friendly", "are camouflaged" ]
A
animals usually distance themselves from humans
medmcqa
medmcqa_05_00567
A 1-month-old infant is brought to the physician by her parents. She has had repeated bouts of bilious vomiting over the past month and cannot be fed adequately She is in the 10th percentile for weight and the 50th percentile for length. An upper GI series discloses marked narrowing of the midportion of the duodenum. W...
[ "Annular pancreas", "Duodenal polyp", "Islet cell adenoma", "Pancreatic pseudocyst" ]
A
Annular pancreas is a congenital condition in which the head of the pancreas surrounds the second portion of the duodenum. The anomaly may be associated with duodenal atresia. Infants present with feeding disorders and growth retardation. Pyloric stenosis (choice E) involves the gastric outlet. Duodenal polyp (choice B...
sciq
sciq_01_05393
The chromosomes that have a mixture of maternal and paternal sequence are called what?
[ "gene", "recombinant", "antibodies", "DNA" ]
B
Figure 7.3 In this illustration of the effects of crossing over, the blue chromosome came from the individual’s father and the red chromosome came from the individual’s mother. Crossover occurs between non-sister chromatids of homologous chromosomes. The result is an exchange of genetic material between homologous chro...
sciq
sciq_01_01406
What gas comprises about three-fourths of earth's atmosphere?
[ "carbon dioxide", "hydrogen", "nitrogen", "oxygen" ]
C
Nitrogen is another common element found in living things. It is needed to form both proteins and nucleic acids such as DNA. Nitrogen gas makes up 78 percent of Earth’s atmosphere. In the nitrogen cycle, nitrogen flows back and forth between the atmosphere and living things. You can see how it happens in Figure below ....
medmcqa
medmcqa_05_02961
Immunoglobulin that crosses to the fetus from mother
[ "IgG", "IgM", "IgD", "IgE" ]
A
IgG can cross placental barrier, and protects the newborn child from infections. These maternal antibodies are seen in neonatal circulation upto 2-4 months. Placental crossing of IgG explains the Rh isoimmunization. This occurs when mother is Rh negative, and fetus is Rh positive, and when ABO system antigens are simil...
medmcqa
medmcqa_05_02546
Subacute sclerosing pan- encephalitis is associated with-
[ "Mumps", "Measles", "Rubella", "Typhoid" ]
B
The more serious neurological complications of measles include febrile convulsions, encephalitis, subacute sclerosing pan-encephalitis (SSPE) SSPE characterized by progressive mental deterioration leading to paralysis, involuntary movements, muscle rigidity and coma. Frequency of SSPE is about 1:300,000 cases of natura...
math_qa
mathqa_03_01150
if 14 lions can kill 14 deers in 14 minutes how long will it take 100 lions to kill 100 deers ?
[ "1 minutes", "14 minute", "100 minutes", "10000 minutes" ]
B
"we can try the logic of time and work , our work is to kill the deers so 14 ( lions ) * 14 ( min ) / 14 ( deers ) = 100 ( lions ) * x ( min ) / 100 ( deers ) hence answer is x = 14 answer : b"
sciq
sciq_01_06953
Which law relates the pressure, volume, and temperature of a gas?
[ "newton's law", "shifts gas law", "combines gas law", "directions gas law" ]
C
The combined gas law relates pressure, volume, and temperature of a gas.
math_qa
mathqa_03_04864
walking with 4 / 5 of my usual speed , i arrive at the bus stop 9 minutes later than normal . how many minutes does it take to walk to the bus stop at my usual speed ?
[ "24", "28", "32", "36" ]
D
"let t = usual time = distance / usual speed t + 9 = distance / ( 4 * usual speed / 5 ) = ( 5 * distance ) / ( 4 * usual speed ) = 5 t / 4 t = 36 the answer is d ."
openbookqa
obqa_02_04506
In order to play with a beach ball, you need to fill it with
[ "with ice", "with water", "a gaseous substance", "with oil" ]
C
a beach ball contains gas
medmcqa
medmcqa_05_00958
Release of ferroportin store is controlled by:
[ "Hepcidin", "Transferrin", "Ferritin", "Hepoxin" ]
A
a. Hepcidin(Ref: Nelson's 20/e p 2323-2325, Ghai 8/e p 334-335)Ferroportin which regulates the Iron release from tissue store house is regulated by hepcidin hormone released by liver.
ARC-Easy
arc_04_01841
A student completes several tasks while making breakfast. During which task does the student make a solution?
[ "adding sugar to tea", "pouring milk on cereal", "spreading jelly on toast", "sprinkling cheese on eggs" ]
A
null
sciq
sciq_01_10430
In a car race on a circular track, where the start and finish line are the same, what quantity is neglible?
[ "total displacement", "total distance", "total acceleration", "partial displacement" ]
A
To return to the first image, these cars travel a distance of 500 miles over the course of the race. However, they are traveling in a circle, and the start and finish line are the same. Therefore, when the car finishes the race, it is in essentially the same position it was when it started. The car's total displacement...
math_qa
mathqa_03_00109
a retailer bought a shirt at wholesale and marked it up 80 % to its initial price of $ 36 . by how many more dollars does he need to increase the price to achieve a 100 % markup ?
[ "2", "4", "6", "8" ]
B
let x be the wholesale price . then 1.8 x = 36 and x = 36 / 1.8 = 20 . to achieve a 100 % markup , the price needs to be $ 40 . the retailer needs to increase the price by $ 4 more . the answer is b .
medmcqa
medmcqa_05_04710
IV fluid replacement in a trauma patient is determined by
[ "Urine output", "Chest condition", "CVP", "BP" ]
A
Adequacy of fluid replacement should be checked with hemodynamic stability and urine output. When very large fluid shifts are expected and the patient has compromised renal insufficiency it is necessary to monitor fluid status using central venous pressure(CVP). Manipal manual of surgery-Shenoy,4th edition,pg
openbookqa
obqa_02_00819
how come a person can blow into a balloon and use the same air to fill a soccer ball?
[ "it is the law of thermodynamics", "it is the ability of it to conform", "it is a shift in the cosmos", "all of these" ]
B
Matter in the gas phase has variable shape
medmcqa
medmcqa_05_02411
Earliest feature of vitamin-A deficiency is:
[ "Dryness of conjunctiva", "Nyctalopia", "Keratomalacia", "Hyphema" ]
A
Dryness of conjunctiva
math_qa
mathqa_03_00333
convert 2.0 hectares in ares
[ "130 ares .", "160 ares .", "180 ares .", "200 ares ." ]
D
"2.0 hectares in ares 1 hectare = 100 ares therefore , 2.0 hectares = 2.0 × 100 ares = 200 ares . answer - d"
openbookqa
obqa_02_02989
You would use a lever to move a
[ "feather", "grain of sand", "drop of water", "safe" ]
D
a lever is used for moving heavy objects
math_qa
mathqa_03_04992
if n is a positive integer and n ^ 2 is divisible by 72 , then the largest positive integer m that must divide n is ?
[ "6", "12", "24", "36" ]
B
"q : if n is a positive integer and n ^ 2 is divisible by 72 , then the largest positive integer m that must divide n is : a 6 , b 12 , c 24 , d 36 , e 48 n ^ 2 is divisible by 72 , but it must also be greater than 72 . if n is an integer , then n ^ 2 must be a perfect square . the factorization of 72 is ( 8 ) ( 9 ) , ...
math_qa
mathqa_03_01748
in a certain company , a third of the workers do not have a retirement plan . 20 % of the workers who do not have a retirement plan are women , and 40 % of the workers who do have a retirement plan are men . if 140 of the workers of that company are men , how many of the workers are women ?
[ "85", "95", "105", "120" ]
A
"20 % of the workerswithoutretirement plan are women , this means 80 % of the workerswithoutretirement plan are men right ? makes 100 % = no retirement plan . then 40 % of those wo have a retirement plan are men , which means 60 % of those who have a retirement plan are women . these percentages are always refering to ...
sciq
sciq_01_04189
What are the two types of cells?
[ "animal and bacteria", "mammal and plant", "bacteria and eukaryotes", "prokaryotes and eukaryotes" ]
D
There are two cell types: prokaryotes and eukaryotes. Prokaryotic cells are usually single-celled and smaller than eukaryotic cells. Eukaryotic cells are usually found in multicellular organisms, but there are some single-celled eukaryotes.
math_qa
mathqa_03_04255
when a certain tree was first planted , it was 4 feet tall , and the height of the tree increased by a constant amount each year for the next 6 years . at the end of the 6 th year , the tree was 2 / 5 taller than it was at the end of the 4 th year . by how many feet did the height of the tree increase each year ?
[ "3 / 10", "2 / 5", "1 / 2", "4" ]
D
"say , the tree grows by x feet every year . then , 4 + 6 x = ( 1 + 2 / 5 ) ( 4 + 4 x ) or , x = 4 answer d"
math_qa
mathqa_03_02606
the angle between the minute hand and the hour hand of a clock when the time is 8.30 , is :
[ "10 º", "75 º", "180 º", "270 º" ]
B
"angle traced by hour hand in 17 / 2 hrs = ( 360 / 12 x 17 / 2 ) º = 255 . angle traced by min . hand in 30 min . = ( 360 / 60 x 30 ) º = 180 . required angle = ( 255 - 180 ) º = 75 º . answer b"
ARC-Easy
arc_04_00537
An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
[ "They break down dead organisms to return nutrients to the soil.", "They produce their own food for survival.", "They play a role in preventing weathering and erosion.", "They provide most of the energy to consumers." ]
A
null
medmcqa
medmcqa_05_01220
Reservoir of Tetanus infection is
[ "Man", "Soil", "Pig", "Plants" ]
B
Soil is the Reservoir of: Tetanus Anthrox Coccidiomycosis Mycetoma
sciq
sciq_01_02521
The two ovaries are small, oval organs on either side of what part of the body?
[ "heart", "uterus", "pancreas", "lungs" ]
B
The two ovaries are small, oval organs on either side of the uterus. Each ovary contains thousands of eggs, with about 1-2 million immature eggs present at birth and 40,000 immature eggs present at puberty, as most of the eggs die off. The eggs do not fully develop until a female has gone through puberty. About once a ...
math_qa
mathqa_03_04637
harold works at a resort from the beginning of march to the end of september . during the month of august this past year , he made 3 times the average ( arithmetic mean ) of his monthly totals in tips for the other months . his total tips for august were what fraction of his total tips for all of the months he worked ?
[ "1 / 3", "2 / 5", "3 / 7", "1 / 2" ]
A
"the time from beginning of march to the end of september is 7 months . if x is the average monthly tip for all months other than august then his august month tip will be 3 * x his total tip for the 7 months = 6 * ( average tip for the months other than august ) + 3 x = 9 x august tips as a fraction of total tips = 3 x...
sciq
sciq_01_02446
What is beyond the atmosphere?
[ "vacuum", "object", "space", "air" ]
C
The chapter focuses on the atmosphere. Beyond the atmosphere is space. The next chapter introduces the study of space.
openbookqa
obqa_02_04052
which of these would make a better material for an electronic device component?
[ "a brown copper panel", "a string of cotton", "a coil of rubber", "a strip of plastic" ]
A
wiring requires an electrical conductor
sciq
sciq_01_11603
Name the fibrous joint in which two parallel bones are united to each other by fibrous connective tissue.
[ "syndesmosis", "cartilage", "gomphosis", "suture" ]
A
Syndesmosis A syndesmosis (“fastened with a band”) is a type of fibrous joint in which two parallel bones are united to each other by fibrous connective tissue. The gap between the bones may be narrow, with the bones joined by ligaments, or the gap may be wide and filled in by a broad sheet of connective tissue called ...
medmcqa
medmcqa_05_02103
Yellow fever aedes agypti index should be ?
[ "<1%", "< 5%", "<10%", "< 20%" ]
A
Ans. is 'a' i.e., < 1%
sciq
sciq_01_11622
Carbonic acid decomposes easily at room temperature into carbon dioxide and what else?
[ "water", "gas", "oxygen", "helium" ]
A
Some unstable acids decompose to produce nonmetal oxides and water. Carbonic acid decomposes easily at room temperature into carbon dioxide and water.