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medmcqa
medmcqa_05_04127
An adult patient presents with generalized lymphadenopathy and blood film shows 70% immature looking lymphocytes. What should be the next best investigation?
[ "Genotyping/karyotyping", "Immunophenotyping", "Bone marrow", "Peripheral smear study" ]
B
An adult patient presenting with generalized lymphadenopathy and blood film shows 70% immature looking lymphocytes is highly suggestive of chronic lymphocytic leukemia. Immunophenotyping can be one of the best ways to differentiate between CLL and other B cell neoplasms. Important points about CLL Most of the patients...
ARC-Challenge
arc_04_02361
Which of these would be the best representation of the particles in a solid material?
[ "The football players playing on the field.", "The planes flying over the football stadium.", "The spectators sitting in their seats at the football stadium.", "The spectators arriving at the football stadium and moving to their seats." ]
C
null
sciq
sciq_01_04889
If pollination occurs, what does the zygote develop into?
[ "an egg", "a sperm", "an ovum", "an embryo" ]
D
Pollination occurs when pollen is transferred from a male to female cone. If sperm then travel from the pollen to an egg so fertilization can occur, a diploid zygote results. The zygote develops into an embryo within a seed, which forms from the ovule inside the female cone. If the seed germinates, it may grow into a m...
openbookqa
obqa_02_02220
A person wants to collect green slime, so they seek out
[ "damp gutters", "neat pictures", "old dogs", "dry bones" ]
A
algae is found in bodies of water
sciq
sciq_01_05519
Tin is oxidized at the anode, while silver ion is reduced at?
[ "cathode", "iodine", "anodyne", "gamma" ]
A
The standard cell potential is positive, so the reaction is spontaneous as written. Tin is oxidized at the anode, while silver ion is reduced at the cathode. Note that the voltage for the silver ion reduction is not doubled even though the reduction half-reaction had to be doubled to balance the overall redox equation.
sciq
sciq_01_06921
Adding carbon to iron makes what type of metal?
[ "ions", "plastic", "steel", "titanium" ]
C
Metals such as iron are useful for many purposes because of their unique properties. For example, they can conduct electricity and bend without breaking. However, pure metals may be less useful than mixtures of metals with other elements. For example, adding a little carbon to iron makes it much stronger. This mixture ...
medmcqa
medmcqa_05_03975
Yellowish exudates at multiple sites seen in colonoscopy indicates -
[ "Crohn's disease", "Hirschsprung disease", "Tuberculosis", "Lymphoma" ]
A
In Crohn's disease focal inflammation and ulceration are frequently seen. In ulcerative colitis usually hyperemia is seen.
sciq
sciq_01_05216
What is an element that tend to be malleable?
[ "mixture", "metal", "actinide", "lanthanide" ]
B
Metals tend to be malleable. This means that they can be formed into thin sheets without breaking. An example is aluminum foil, also pictured in the Figure below .
sciq
sciq_01_11035
What layer is above the mesosphere?
[ "exosphere", "stratosphere", "thermosphere", "ionosphere" ]
C
The thermosphere is the layer above the mesosphere. It rises to 600 kilometers (372 miles) above the surface. The International Space Station orbits Earth in this layer as in Figure below .
sciq
sciq_01_06960
Motor neurons and sensory neurons are part of what nervous system?
[ "autonomic", "peripheral", "central", "sensory-somatic" ]
D
Sensory-Somatic Nervous System The sensory-somatic nervous system is made up of cranial and spinal nerves and contains both sensory and motor neurons. Sensory neurons transmit sensory information from the skin, skeletal muscle, and sensory organs to the CNS. Motor neurons transmit messages about desired movement from t...
sciq
sciq_01_05255
In some ways, a collection of gas molecules represents the simplest form of what?
[ "protein", "life", "energy", "matter" ]
D
In some ways, a collection of gas molecules represents the simplest form of matter. Because the individual molecules are so far apart, they have only fleeting interactions with one another. In contrast, molecules that have clustered together to form a liquid or solid are constantly exerting forces on each other. In fac...
sciq
sciq_01_09531
A wildfire clears a forest of vegetation and animal life, returning their nutrients to the ground leaving a foundation for rapid recolonization. what is this a classic example of?
[ "secondary succession", "primary succession", "cause succession", "typical succession" ]
A
Secondary succession A classic example of secondary succession occurs in oak and hickory forests cleared by wildfire (Figure 19.27). Wildfires will burn most vegetation, and unless the animals can flee the area, they are killed. Their nutrients, however, are returned to the ground in the form of ash. Thus, although the...
openbookqa
obqa_02_02703
A seismometer will be able to tell how much this was quaking:
[ "tree", "bird", "shoe", "bed" ]
A
a seismometer is used to measure the strength or magnitude of an earthquake
sciq
sciq_01_07230
What is the continental margin made of?
[ "continental crust", "boundary crust", "pangea", "continental drift" ]
A
continental margin : The transition from the land to the deep sea. The continental margin is made of continental crust. More than one-quarter of the ocean basin is continental margin.
ARC-Easy
arc_04_01440
What characteristic helps a rabbit survive in a winter environment?
[ "size", "strength", "long ears", "camouflage" ]
D
null
sciq
sciq_01_01628
What do aquatic mollusk species use for respiration?
[ "pores", "phototropism", "gills", "lungs" ]
C
Which of the following statements about the anatomy of a mollusk is false? a. Mollusks have a radula for grinding food. A digestive gland is connected to the stomach. The tissue beneath the shell is called the mantle. The digestive system includes a gizzard, a stomach, a digestive gland, and the intestine. Mollusks hav...
math_qa
mathqa_03_01964
in a class of students , 1 / 2 of the number of girls is equal to 1 / 6 of the total number of students . what is the ratio of boys to girls in the class ?
[ "1 / 2", "2 / 3", "2 / 1", "3 / 2" ]
C
"( 1 / 2 ) g = ( 1 / 6 ) ( b + g ) 6 g = 2 b + 2 g 4 g = 2 b b / g = 2 / 1 . the answer is c ."
medmcqa
medmcqa_05_00262
Which of the following inhalational anaesthetic agents has lowest blood: gas solubility-
[ "Halothane", "Isoflurane", "Sevoflurane", "Desflurane" ]
D
Blood: Gas solubility Halothane 2.25 | ed B:G solubility Isoflurane 1.4 Sevoflurane 0.63 |ed speed of induction Desflurane 0.42
openbookqa
obqa_02_04066
which of these would get bigger and recover from injuries better?
[ "a child who eats thrice a day", "a malnourished little child", "a child who gets insufficient diet", "a child who eats six times a week" ]
A
an animal requires nutrients to grow and heal
sciq
sciq_01_04224
What anatomical structure serves as the conduit of the oocyte from the ovary to the uterus?
[ "urethra", "nephrons", "uterine tubes", "ureters" ]
C
The Uterine Tubes The uterine tubes (also called fallopian tubes or oviducts) serve as the conduit of the oocyte from the ovary to the uterus (Figure 27.14). Each of the two uterine tubes is close to, but not directly connected to, the ovary and divided into sections. The isthmus is the narrow medial end of each uterin...
sciq
sciq_01_07253
Soil that forms in place over a very long period is called what?
[ "antique soil", "resultant soil", "leakage soil", "residual soil" ]
D
A soil is a residual soil when it forms in place. Only about one third of the soils in the United States form this way. The material comes from the underlying bedrock. Residual soils form over many years since it takes a long time for solid rock to become soil. First, cracks break up the bedrock. This may happen due to...
openbookqa
obqa_02_01890
The process of building a log cabin for a dream getaway deep in the mountains near an idyllic stream requires
[ "processed cheese", "metal panels", "drywall", "wood beams" ]
D
if something is a raw material in a process then that something is required for that process
sciq
sciq_01_01003
Metallic bonds allow metals to do what, in the manner of a willow tree?
[ "grow", "stand tall", "bend without breaking", "break easily" ]
C
The thick, rigid trunk of the oak tree on the left might crack and break in a strong wind. The slim, flexible trunk of the willow tree on the right might bend without breaking. In one way, metals are like willow trees. They can bend without breaking. That’s because metals form special bonds called metallic bonds.
openbookqa
obqa_02_00008
As a car approaches you in the night
[ "the headlights become more intense", "the headlights recede into the dark", "the headlights remain at a constant", "the headlights turn off" ]
A
as a source of light becomes closer , that source will appear brighter
sciq
sciq_01_02835
Wavelength and frequency are defined in the same way for electromagnetic waves as they are for which other waves?
[ "light", "gravitational", "mechanical", "sonar" ]
C
Wavelength and frequency are defined in the same way for electromagnetic waves as they are for mechanical waves. Both properties are illustrated in Figure below .
sciq
sciq_01_09189
Electrons flow through wires to create what?
[ "balanced reaction", "electric current", "electromagnetism", "hydroelectric power" ]
B
3. Electrical energy is the energy of moving electrons. Electrons flow through wires to create electric current.
sciq
sciq_01_03888
The standard reduction potential can be determined by subtracting the standard reduction potential for the reaction occurring at the anode from the standard reduction potential for the reaction occurring at this?
[ "electrode", "Spinner", "plasma", "cathode" ]
D
The standard reduction potential can be determined by subtracting the standard reduction potential for the reaction occurring at the anode from the standard reduction potential for the reaction occurring at the cathode. The minus sign is necessary because oxidation is the reverse of reduction. E°cell = E°cathode − E°an...
medmcqa
medmcqa_05_00179
BRA Cl Gene is located on-
[ "Chromosome 13", "Chromosome 11", "Chromosome 17", "Chromosome 22" ]
C
Harshmohan textbook of pathology 7th edition BRCA 1 gene located on chromosome no 17, a DNA repair gene is implicated in both breast and ovarian cancer in inherited cases. BRCA 2 gene located on chromosome no 13, DNA repair gene in its mutated form has a similarly higher incidence of inherited cancer of the breast and ...
openbookqa
obqa_02_03808
Which absorbs more sunlight?
[ "palm frond", "a mirror", "maple syrup", "Wednesday" ]
A
as flatness of a leaf increases , the amount of sunlight that leaf can absorb will increase
ARC-Easy
arc_04_00297
Which object is made to reflect light?
[ "telescope", "window", "mirror", "eyeglasses" ]
C
null
medmcqa
medmcqa_05_00075
Alpha I antitrypsin deficiency occurs in -
[ "Emphysema", "Bronchiectasis", "Empyema", "Bronchogenic carcinoma" ]
A
Ans. is `a' i.e., Emphysema
sciq
sciq_01_07695
Both oxygen and glucose are transported within the body via what?
[ "blood", "marrow", "bone", "heart" ]
A
Oxygen is just one substance transported by the blood. The blood also transports nutrients such as glucose.
openbookqa
obqa_02_04552
if two objects have the same charge then those two materials will effect each other how?
[ "pull together", "attract", "unattract", "bug repellent" ]
C
if two objects have the same charge then those two materials will repel each other
medmcqa
medmcqa_05_04679
Mechanism of action of pralidoxime is:
[ "Stimulation of ACh receptors", "Inhibition of breakdown of ACh", "Blockade of ACh receptors", "Reactivation of AChE enzyme" ]
D
Ans. (D) Reactivation of AChE enzyme(Ref: Katzung 10/e p116; KDT 8th/e p123)Pralidoxime and diacetylmonoxime are cholinesterase regenerator compounds used for organophosphate poisoning.
sciq
sciq_01_01833
What type of energy occurs by splitting the nuclei of radioactive uranium?
[ "kinetic", "atomic", "nuclear", "microwave" ]
C
Nuclear energy is produced by splitting the nuclei of radioactive uranium. This doesn’t release air pollution or carbon dioxide, but it does produce dangerous radioactive wastes.
sciq
sciq_01_06500
Why is the drift velocity negligible?
[ "shows free charges", "less free charges", "need free charges", "many free charges" ]
D
Good conductors have large numbers of free charges in them. In metals, the free charges are free electrons. Figure 20.6 shows how free electrons move through an ordinary conductor. The distance that an individual electron can move between collisions with atoms or other electrons is quite small. The electron paths thus ...
ARC-Challenge
arc_04_03108
Which trait do children most likely inherit from their parents?
[ "shape of earlobes", "musical ability", "personality", "language" ]
A
null
ARC-Easy
arc_04_01800
Earthquake waves are recorded by seismograph machines. What does an earthquake wave transmit?
[ "energy", "light", "particles", "speed" ]
A
null
openbookqa
obqa_02_00913
The condor screamed in pain as its wing was singed by the
[ "ice", "water", "electricity", "campfire" ]
D
fire causes harm to living things
math_qa
mathqa_03_04562
if x : y = 3 : 5 , find the value of ( 2 x + 4 y ) : ( 4 x – y )
[ "29 : 7", "22 : 7", "26 : 7", "20 : 7" ]
C
"explanation : given : a / b = 3 / 5 ( 2 * 3 + 4 * 5 ) : ( 4 * 3 – 5 ) = 26 : 7 answer : c"
medmcqa
medmcqa_05_04610
An epidemiologic study of cancer deaths recorded in the last half of the 20th century is conducted. The number of deaths for one particular cancer had increased markedly in developed nations. More than 30% of cancer deaths in men, and more than 24% of cancer deaths in women, were caused by this neoplasm in 1998. In som...
[ "Cerebral glioma", "Bronchogenic carcinoma", "Hepatocellular carcinoma", "Colonic adenocarcinoma" ]
B
The incidence of lung cancers increased dramatically in the 20th century because of the popularity of cigarette smoking. As the number of individuals in a population who smoke increases, so do the number of lung cancers. Some cancers of the urinary tract, oral cavity, esophagus, and pancreas also are causally related t...
sciq
sciq_01_08701
Gas particles are constantly colliding with each other and the walls of a container, and these collisions are elastic, so there is no net loss of what?
[ "velocity", "heat", "energy", "temperature" ]
C
A N SW E R S 1. Gases consist of tiny particles of matter that are in constant motion. Gas particles are constantly colliding with each other and the walls of a container. These collisions are elastic; that is, there is no net loss of energy from the collisions. Gas particles are separated by large distances, with the ...
medmcqa
medmcqa_05_00407
In Kwashiorkor, the letter 'K' is post-fixed to denote-
[ "Weight for height", "Skin changes", "Edema", "Muscle wasting" ]
C
Ans. is 'c' i.e., Edema
sciq
sciq_01_06948
In science, we need to make observations on various phenomena to form and test what?
[ "variations", "hypotheses", "assumptions", "theories" ]
B
In science, we need to make observations on various phenomena to form and test hypotheses. Some phenomena can be found and studied in nature, but scientists often need to create an experiment . Experiments are tests under controlled conditions designed to demonstrate something scientists already know or to test somethi...
openbookqa
obqa_02_01198
The mantle is a layer of the Earth; what is something other than a layer?
[ "crust", "inner core", "outer core", "lava pit" ]
D
the mantle is a layer of the Earth
openbookqa
obqa_02_03281
Treated water is unlikely to have
[ "drinkable fluid in the system", "a clear color throughout", "harmful contaminants flowing within it", "better water then pretreatment" ]
C
Vitamin D heals bones
math_qa
mathqa_03_01348
the wages earned by robin is 35 % more than that earned by erica . the wages earned by charles is 60 % more than that earned by erica . how much % is the wages earned by charles more than that earned by robin ?
[ "25.92 %", "18.75 %", "30 %", "50 %" ]
A
"explanatory answer let the wages earned by erica be $ 100 then , wages earned by robin and charles will be $ 135 and $ 160 respectively . charles earns $ 35 more than robin who earns $ 135 . therefore , charles ' wage is 35 / 135 * 100 = 25.92 % . the correct choice is ( a )"
medmcqa
medmcqa_05_02012
Bagassosis is most likely caused due to the inhalation of the dust of ?
[ "Free silica", "Coal", "Sugar cane", "Cotton fibre" ]
C
Ans. is 'c' i.e., Sugarcane Pneumoconiosis Pneumoconiosis is an occupational lung disease caused by the inhalation of dust. The development of pneumoconiosis depends on - The amount of dust retained in the lungs and airways. The size, shape of the paicles- The most dangerous paicle ranges from 1 to 5 m in diameter beca...
ARC-Easy
arc_04_01846
Which of these BEST describes the way a feather feels?
[ "Colorful", "Soft", "Low", "Bright" ]
B
null
openbookqa
obqa_02_03819
What scratches glass easily?
[ "a rubber pencil eraser", "a crystal that regulates electronic oscillators in watches", "a soft linen towel", "a round piece of ice" ]
B
quartz scratches glass easily
sciq
sciq_01_07256
What is an example of a biochemical lipid that contributes to weight gain?
[ "fats", "proteins", "acids", "sugars" ]
A
You’ve probably seen dozens of nutrition facts labels like the one in the opening image. The labels show the nutrients that foods contain. Many people read nutrition facts labels to see how much fat there is in particular foods. That’s because eating too much fat, especially saturated fat, can be unhealthy and contribu...
ARC-Challenge
arc_04_02609
Scientists perform experiments to test hypotheses. How do scientists try to remain objective during experiments?
[ "Scientists analyze all results.", "Scientists use safety precautions.", "Scientists conduct experiments once.", "Scientists change at least two variables." ]
A
null
sciq
sciq_01_07598
What is the process that moves particles by rolling or dragging along the bottom of the water?
[ "traction", "compression", "compaction", "isolation" ]
A
The biggest particles, including gravel and pebbles, are moved by traction . In this process, the particles roll or drag along the bottom of the water.
math_qa
mathqa_03_02093
points a , b , c , and d , in that order , lie on a line . if ab = 2 cm , ac = 5 cm , and bd = 6 cm , what is cd , in centimeters ?
[ "1", "2", "3", "4" ]
C
putting a value to each point , lets use the following : a - 0 b - 2 ( ab = 2 ) c - 5 ( ac = 5 ) d - 8 ( bd = 6 ) cd is 8 - 5 = 3 . ans c
sciq
sciq_01_01331
The major salivary enzyme is called?
[ "synthase", "mucosa", "amylase", "sucrase" ]
C
The mouth is the first digestive organ that food enters. The sight, smell, or taste of food stimulates the release of digestive enzymes by salivary glands inside the mouth. The major salivary enzyme is amylase. It begins the chemical digestion of carbohydrates by breaking down starch into sugar.
math_qa
mathqa_03_02103
61 + 5 * 12 / ( 180 / 3 ) = ?
[ "22", "77", "29", "62" ]
D
"61 + 5 * 12 / ( 180 / 3 ) = 61 + 5 * 12 / ( 60 ) = 61 + ( 5 * 12 ) / 60 = 61 + 1 = 62 . answer : d"
sciq
sciq_01_10781
Ionic liquids heating a salt to its melting point produces a what?
[ "gas", "plasma", "molten salt", "table salt" ]
C
Molten Salts and Ionic Liquids Heating a salt to its melting point produces a molten salt. If we heated a sample of solid NaCl to its melting point of 801°C, for example, it would melt to give a stable liquid that conducts electricity. The characteristics of molten salts other than electrical conductivity are their hig...
sciq
sciq_01_05792
A mineral’s crystal shape is determined by the way what objects are arranged?
[ "molecules", "Electrons", "atoms", "particles" ]
C
The patterns of atoms that make a mineral affect its physical properties. A mineral’s crystal shape is determined by the way the atoms are arranged. For example, you can see how atoms are arranged in halite in Figure above . You can see how salt crystals look under a microscope in Figure below . Salt crystals are all c...
math_qa
mathqa_03_04689
find compound interest on $ 6000 at 15 % per annum for 2 years 4 months , compounded annually .
[ "2331.75", "2209.75", "2108.75", "2107.75" ]
A
"time = 2 years 4 months = 2 ( 4 / 12 ) years = 2 ( 1 / 3 ) years . amount = $ [ 6000 x ( 1 + ­ ( 15 / 100 ) ) 2 x ( 1 + ( ( 1 / 3 ) * 15 ) / 100 ) ] = $ [ 6000 * ( 23 / 20 ) * ( 23 / 20 ) * ( 21 / 20 ) ] = $ 8331.75 . : . c . i . = rs . ( 8331.75 - 6000 ) = $ 2331.75 answer a ."
math_qa
mathqa_03_01942
the average ( arithmetic mean ) of the even integers from 0 to 40 inclusive is how much greater than the average ( arithmetic mean ) of the even integers from 0 to 20 inclusive ?
[ "5", "8", "10", "15" ]
C
"the sum of even numbers from 0 to n is 2 + 4 + . . . + n = 2 ( 1 + 2 + . . . + n / 2 ) = 2 ( n / 2 ) ( n / 2 + 1 ) / 2 = ( n / 2 ) ( n / 2 + 1 ) the average is ( n / 2 ) ( n / 2 + 1 ) / ( n / 2 + 1 ) = n / 2 the average of the even numbers from 0 to 40 is 40 / 2 = 20 the average of the even numbers from 0 to 20 is 20 ...
sciq
sciq_01_09915
Adipose is a connective tissue made up of cells called what?
[ "hepatocytes", "keratinocytes", "oocytes", "adipocytes" ]
D
Figure 33.16 Adipose is a connective tissue is made up of cells called adipocytes. Adipocytes have small nuclei localized at the cell edge.
openbookqa
obqa_02_03816
Cows only eat what?
[ "flora", "animals", "water", "bugs" ]
A
cows only eat plants
math_qa
mathqa_03_03628
if 15 students in a class average 80 % on an english exam and 10 students average 90 % on the same exam , what is the average in percent for all 25 students ?
[ "83 %", "83 1 ⁄ 2 %", "84 %", "85 %" ]
C
the average percentage = ( 15 x 80 % + 10 x 90 % ) / 25 = ( 15 x 80 % + 10 x 80 % + 10 x 10 % ) / 25 . . . . . . ( as 90 % = 10 % + 80 % ) = ( 25 x 80 % + 10 x 10 % ) / 25 = 80 % + 10 x 10 % / 25 = 80 % + 4 % = 84 % answer : c
sciq
sciq_01_01377
What carries the instructions from the nucleus to the cytoplasm?
[ "concept rna", "messenger rna", "dirscriptor rna", "anderson rna" ]
B
Messenger RNA ( mRNA ) carries the instructions from the nucleus to the cytoplasm. mRNA is produced in the nucleus, as are all RNAs.
medmcqa
medmcqa_05_03909
A new born child has not passed meconium for 48 hours. What is the diagnostic procedure of choice?
[ "USG", "Contrast enema", "CT", "MRI" ]
B
Failure to pass meconium in the first 2 days of life (48 hours) is typically suggestive of a lower GI tract obstruction such as Hirschsprung's diseases, meconium plug syndrome or anorectal malformation. A contrast enema is the most suitable primary investigation to make the diagnosis, amongst the options provided.
math_qa
mathqa_03_03064
ramesh , xyz and rajeev put a partnership . profit is 36000 , if ramesh and xyz ratio is 5 : 4 and xyz and rajeev 8 : 9 . find rajeev ' s share .
[ "14000", "15000", "16000", "12000" ]
D
ramesh : xyz = 5 : 4 xyz : rajeev = 8 : 9 then ramesh : xyz / rajeev : xyz = 5 : 4 / 9 : 8 ramesh / rajeev = 10 / 9 therefore ramesh : xyz : rajeev = 10 : 8 : 9 then rajeev share = ( 9 / 27 ) * 36000 = 12000 answer : d
openbookqa
obqa_02_02088
At 30 degress fahrenheit, water is
[ "hot", "solid", "quenching", "gaseous" ]
B
freezing point means temperature at which a liquid freezes
sciq
sciq_01_07862
What do you call a period when temperatures are cooler than normal, causing glaciers to spread?
[ "ice age", "earth age", "polar age", "thermal age" ]
A
Over much of Earth’s past, the climate was warmer than it is today. Picture in your mind dinosaurs roaming the land. They're probably doing it in a pretty warm climate! But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to l...
openbookqa
obqa_02_03206
which one of these is false about the greenhouse effect?
[ "it could cause polar melting", "it causes green air in the sky", "it causes overall temperature rise", "it heats up the atmosphere" ]
B
the greenhouse effect is when carbon in the air heats a planet 's atmosphere
sciq
sciq_01_08850
When blood engorged capillaries leak fluid into neighboring tissues, what occurs?
[ "swelling", "bleeding", "seeping", "infection" ]
A
sciq
sciq_01_01936
What are the most abundant unicellular algae in the oceans?
[ "chlorella", "sporozoans", "chryosophytes", "staurikosaurus" ]
C
22.11.4 Chryosophytes Chryosophytes are the most abundant unicellular algae in the oceans. They are also one of the biggest components of plankton, a free-floating collection of microorganisms, eggs, and larvae. As photosynthetic organisms, they produce a significant amount of atmospheric oxygen. The reproduction cycle...
openbookqa
obqa_02_03649
Consumers eat other what?
[ "islands", "winds", "currents", "fauna" ]
D
consumers eat other organisms
math_qa
mathqa_03_02189
in a certain candy store , 22 % of the customers are caught sampling the candy and are charged a small fine , but 12 % of the customers who sample the candy are not caught . what is the total percent of all customers who sample candy ?
[ "22 %", "23 %", "24 %", "25 %" ]
D
"since 12 % of the customers who sample the candy are not caught , then 88 % of the customers who sample the candy are caught : { % of customers who sample candy } * 0.88 = 0.22 ; { % of customers who sample candy } = 0.25 . answer : d ."
sciq
sciq_01_03547
Each species has a characteristic number of what coiled structures made of dna and proteins?
[ "genes", "chromosomes", "prokaryotes", "ribosomes" ]
B
Each species has a characteristic number of chromosomes. Chromosomes are coiled structures made of DNA and proteins called histones ( Figure below ). Chromosomes are the form of the genetic material of a cell during cell division. See the "Chromosomes" section for additional information.
sciq
sciq_01_07241
A catalytic converter filters pollutants in exhaust created by burning what before releasing it into the air?
[ "noble gas", "fossil fuels", "fossil compounds", "carbon dioxide" ]
B
Some of the pollutants from fossil fuels can be filtered out of exhaust before it is released into the air. Other pollutants can be changed to harmless compounds before they are released. Two widely used technologies are scrubbers and catalytic converters.
sciq
sciq_01_05846
Sickle cell diseas is caused by what?
[ "posterior allele", "bronchiole allele", "anterior allele", "receccisve allele" ]
D
medmcqa
medmcqa_05_02008
In Inferior shoulder dislocation nerve most common injured is:
[ "Axillary", "Median", "Ulnar", "Radial" ]
A
ANSWER: (A) AxillaryREF: Nerve and Vascular Injuries in Sports Medicine, By Venu Akuthota, Stanley A. Herring, page 92"Injury to the axillary nerve is most commonly due to traumatic event causing traction at the shoulder. This includes glenohumeral dislocation and humeral fracture. The incidence of axillary nerve damag...
medmcqa
medmcqa_05_02230
Red bone marrow is involved in erythropoiesis from
[ "3 week to 3 months intra uterine", "3 months to 5 months Intrauterine", ">5 months IU", "> 5 months" ]
C
Erythropoiesis: Intra uterine Life: 3 wk to 3 month —> Yolk sac 3 month to 5 month —> Liver + spleen > 5 Month —> Red bone marrow   Birth to 20 yrs —> Flat + long bones   > 20 yrs — Flat bone
ARC-Easy
arc_04_01937
If a tall tree falls over in a crowded forest, which resource becomes available to the surrounding plants?
[ "air", "soil", "water", "sunlight" ]
D
null
sciq
sciq_01_06460
Thermal, radiant, electrical, nuclear, and chemical are all types of what?
[ "energy", "fuel", "fuel", "heating" ]
A
The chapter describes thermal energy, radiant energy, electrical energy, nuclear energy, and chemical energy. Which form(s) of energy are represented by each of the following?.
medmcqa
medmcqa_05_02267
WHO Rose questionnaire is for
[ "DVT assessment", "Alcohol addiction", "Angina assessment", "Arrhythmia assessment" ]
C
.
sciq
sciq_01_02334
What do you call a group of cells of the same kind that performs the same function?
[ "organ system", "tissue", "nucleus", "molecule" ]
B
Specialized cells may be organized into tissues. A tissue is a group of cells of the same kind that performs the same function. For example, muscle cells are organized into muscle tissue. The function of muscle tissue is to contract in order to move the body or its parts.
medmcqa
medmcqa_05_00215
Bergmeister papilla are present on the:
[ "Anterior corneal surface", "Near the optic disc", "Anterior lens surface", "Posterior lens surface" ]
B
Ans. Near the optic disc
math_qa
mathqa_03_01793
how much interest will $ 10,000 earn in 3 months at an annual rate of 6 % ?
[ "$ 250", "$ 150", "$ 450", "$ 550" ]
B
"soln : - 6 months = 1 / 4 of year ; 6 % = 6 / 100 = 3 / 50 ; $ 10,000 ( principal ) * 3 / 50 ( interest rate ) * 1 / 4 ( time ) = $ 150 . answer : b"
medmcqa
medmcqa_05_04724
Best treatment for menigioma with low recurrence rate is
[ "Tumour excision with cyst of dura mater removal", "Excision surgery followed by radiotherapy", "Chemotherapy", "Preop embolization + Excision surgery" ]
A
Surgical treatment should be, wherever possible, total excision. If this includes the site of dural attachment, the recurrence rate is less than 10 per cent. Incomplete excision of the dural attachment will result in a recurrence rate of between 20 and 30 per cent. Subtotal excision will result in 40 pet cent showing p...
sciq
sciq_01_00205
What two ways may light be transmitted?
[ "refracted or scattered", "magnified or scattered", "absorption and refraction", "reflected or refracted" ]
A
Transmitted light may be refracted or scattered. When does each process occur?.
math_qa
mathqa_03_01258
a light has a rating of 110 watts , it is replaced with a new light that has 30 % higher wattage . how many watts does the new light have ?
[ "143", "145", "156", "134" ]
A
"final number = initial number + 30 % ( original number ) = 110 + 30 % ( 110 ) = 110 + 33 = 143 . answer a"
openbookqa
obqa_02_03515
If a person is going to be in an area with acid rain, the organs in the body can be unharmed because of
[ "outer organ protection", "being given immunity", "using sunscreen", "taking vitamins" ]
A
skin is used for protecting the body from harmful substances
sciq
sciq_01_06586
The earliest cells were prokaryotes, surrounded by a cell membrane but lacking which key structure?
[ "nucleus", "mitochondria", "ribosomes", "lysosomes" ]
A
The first organisms were made of only one cell ( Figure below ). The earliest cells were prokaryotes . Prokaryotic cells are surrounded by a cell membrane. They do not have a nucleus. Their organelles are free in the cell. The cells get their nutrients directly from the water they live in. The cells need to use these n...
sciq
sciq_01_10319
What term is used to express the measurement of how high land is above sea level?
[ "distance", "latitude", "knots", "elevation" ]
D
Elevation measures how high land is above sea level. It gets colder as you go higher above sea level, which is why you see snow-capped mountains.
math_qa
mathqa_03_04370
if x + y = 14 , x - y = 60 , for integers of x and y , x = ?
[ "37", "35", "25", "20" ]
A
"x + y = 14 x - y = 60 2 x = 74 x = 37 answer is a"
ARC-Easy
arc_04_01435
How does an ecosystem benefit when leaves fall from a tree and decompose on the soil?
[ "Nutrients are released into the soil.", "Soil erosion decreases.", "Carbon dioxide is absorbed by the soil.", "Soil temperature decreases." ]
A
null
openbookqa
obqa_02_04021
I can use a ruler to measure
[ "The smell of popcorn", "the space between my toes", "The length of air", "how angry I am" ]
B
a ruler is used for measuring the length of an object
openbookqa
obqa_02_01380
Alternative fuel is usually a renewable what?
[ "sound", "meal", "drink", "asset" ]
D
alternative fuel is usually a renewable resource
math_qa
mathqa_03_04026
if a man buys 1 liter of milk for 12 rs . and mixes it with 20 % water and sells it for 15 rs then what is the % age of gain . . .
[ "30", "40", "50", "60" ]
C
quantity after adding 20 % water = 1.2 liter sp of 1.2 lit . @ 15 rs . / liter = 15 * 1.2 = 18 rs cp = 12 rs / lit . % profit = 100 * ( 18 - 12 ) / 12 = 50 answer : c
medmcqa
medmcqa_05_01938
Dalrymple's sign is seen in-
[ "Thyroid ophthalmopathy", "Orbital cellulitis", "Choroidal melanoma", "Posterior vitreal detachment" ]
A
*Impoant signs of thyroid ophthalmopathy:- 1)Bilateral exophthalmos 2)Dalrymple's sign 3)Von Graefe's sign 4)Stellwag's sign 5)Mobius's sign 6)Jellinek's sign 7)Joffroy's sign 8)Enroth's sign 9)Grifford's sign Ref: Yanuff & Duker 3rd/e p.786
math_qa
mathqa_03_02779
elena purchased brand x pens for $ 4.00 apiece and brand y for $ 2.20 apiece . if elena purchased a total of 12 of these pens for $ 42.00 , how many brand x pens did she purchase ?
[ "4", "5", "6", "7" ]
C
4 x + 2.8 y = 42 - - > multiply by 2.5 ( to get the integers ) - - > 10 x + 7 y = 105 - - > only one positive integers solutions x = 6 and y = 5 ( how to solve : 7 y must have the last digit of 5 in order the last digit of the sum to be 5 ) . answer : c .
sciq
sciq_01_07758
What do we call any way that animals act, either alone or with other animals.
[ "animal communication", "animal habits", "typical behavior", "animal behavior" ]
D
Animal behavior is any way that animals act, either alone or with other animals.
math_qa
mathqa_03_01673
a dishonest shopkeeper professes to sell pulses at the cost price , but he uses a false weight of 960 gm . for a kg . his gain is … % .
[ "4.16 %", "5.36 %", "4.26 %", "6.26 %" ]
A
"his percentage gain is 100 * 40 / 960 as he is gaining 40 units for his purchase of 960 units . so 4.16 % . answer : a"
math_qa
mathqa_03_03180
the sum of money will be double itself in 10 years and simple interest find rate of interest ?
[ "10 %", "15 %", "20 %", "25 %" ]
A
t = 10 years p = principle amount = x a = total amount = 2 x si = simple interest = a - p = 2 x - x = x r = 100 si / pt = 100 x / 10 x = 10 % answer is a