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math_qa
mathqa_03_02822
in a certain quiz that consists of 10 questions , each question after the first is worth 4 points more than the preceding question . if the 10 questions on the quiz are worth a total of 320 points , how many points is the third question worth ?
[ "39", "24", "22", "20" ]
C
"x x + 4 x + 8 x + 12 x + 16 x + 20 x + 24 x + 28 x + 32 x + 36 10 x + 180 = 320 10 x = 140 x = 14 3 rd question = x + 8 = 14 + 8 = 22 answer c"
openbookqa
obqa_02_01114
In order to conserve energy and eat less through winter, what kind of animal or insect hibernates?
[ "Chairs", "Birds", "Humans", "Bees" ]
D
if an animal relies on plants for food then that animal must store enough food to last through the winter
sciq
sciq_01_04672
How many moons does pluto have?
[ "three", "six", "two", "four" ]
A
Pluto has three moons of its own. The largest, Charon, is big compared to Pluto. The Pluto-Charon system is sometimes called a double dwarf planet ( Figure above ). Two smaller moons, Nix and Hydra, were discovered in 2005.
sciq
sciq_01_08352
The primary function of leaves is to collect sunlight and make food by what process?
[ "osmosis", "photosynthesis", "duplicate process", "nuclear fission" ]
B
The primary function of leaves is to collect sunlight and make food by photosynthesis. Specialized tissues in leaves work together to perform this function. In a deciduous plant, leaves seasonally turn color and fall off the plant. They are replaced with new leaves later in the year. An evergreen plant keeps its green ...
openbookqa
obqa_02_01137
Events like thunderstorms and _______ can cause animals to leave an environment.
[ "car crashes", "solar eclipses", "more available food", "tsunamis" ]
D
natural disasters can cause animals to leave an environment
sciq
sciq_01_08839
What basic plant structure can add support and anchorage?
[ "lower leaves", "stems", "soils", "roots" ]
D
math_qa
mathqa_03_01180
a courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm . the total number of bricks required is ?
[ "22877", "27778", "20000", "27999" ]
C
"number of bricks = courtyard area / 1 brick area = ( 2500 × 1600 / 20 × 10 ) = 20000 answer : c"
sciq
sciq_01_10055
Chemical reactions follow the laws of what?
[ "thermodynamics", "photosynthesis", "Newton", "quantum physics" ]
A
Chemical reactions follow the laws of thermodynamics.
sciq
sciq_01_10009
To undo the tarnish on copper pennies, you can place them in what liquid?
[ "seawater", "honey", "distilled water", "vinegar" ]
D
Because chemical changes produce new substances, they often cannot be undone. For example, you can’t change a fried egg back to a raw egg. Some chemical changes can be reversed, but only by other chemical changes. For example, to undo the tarnish on copper pennies, you can place them in vinegar. The acid in the vinegar...
medmcqa
medmcqa_05_02026
Smell of bitter almonds is seen in poisoning with :
[ "Phosphorus", "Hydrocyanic acid", "Nitric acid", "Oxalic acid" ]
B
B i.e. Hydrocyanic acid
medmcqa
medmcqa_05_01185
Vessels in umbilical cord:
[ "1 artery, 2 vein", "2 arteries, 1 vein", "1 artery, 1 vein", "2 arteries, 2 vein" ]
B
Ans. (b) 2 arteries, 1 veinRef: LB. Singh 9th ed./159"Remember 2AV"* Umbilical cord is the structure which connects mother to fetus and acts as a bridge for transfer of blood and other nutrients from mother to baby.* It contains 2 arteries and one vein. Arteries carry deoxygenated blood from fetus to mother while vein ...
sciq
sciq_01_07147
What is the principal cell of connective tissues?
[ "fibroblast", "organism", "Cancer", "neural" ]
A
Connective Tissues Connective tissues are made up of a matrix consisting of living cells and a non-living substance, called the ground substance. The ground substance is made of an organic substance (usually a protein) and an inorganic substance (usually a mineral or water). The principal cell of connective tissues is ...
openbookqa
obqa_02_02712
if a bush fire breaks out without human action, what might have happened?
[ "the mercury read high in the thermometer that day", "it was a cloudy day", "it was a very rainy day", "it was a very cold day" ]
A
high temperatures can cause an object to combust
openbookqa
obqa_02_00704
A boy smacks another child in the face. The child cries because
[ "it was harmed", "it was sitting", "it was happy", "it was lonely" ]
A
harming something has a negative impact on that something
sciq
sciq_01_10929
What is the term for vascular plants that reproduce with seeds?
[ "Reproductive Plants", "mother plants", "strain plants", "seed plants" ]
D
Seed plants are vascular plants that reproduce with seeds. Modern seed plants are called spermatophytes. Seeds allow the plants to reproduce without water. Most vascular plants today are seed plants.
openbookqa
obqa_02_02163
A girl wants to enjoy some fresh strawberries. She checks the patch in the garden where strawberries grow, but still a ways away from being ready, because they are still
[ "bees", "buds", "dirt", "trees" ]
B
plants are the source of fruit
openbookqa
obqa_02_02178
John was able to read at night even though the electricity had gone out. John was using
[ "a pepperoni and cheese pizza", "a heavy maple desk", "an item made from a petroleum product with a cord sticking out the top", "an old step ladder" ]
C
a candle is a source of light when it is burned
ARC-Easy
arc_04_01881
During an experiment, a student reports that a liquid turned green when mixed with another liquid. This is an example of
[ "a measurement", "a prediction", "an explanation", "an observation" ]
D
null
sciq
sciq_01_07467
Ecosystem dynamics include more than the flow of energy and recycling of matter. ecosystems are also dynamic because they?
[ "stay the same", "never move", "recreate exactly alike", "change through time" ]
D
Ecosystem dynamics include more than the flow of energy and recycling of matter. Ecosystems are also dynamic because they change through time.
ARC-Challenge
arc_04_02363
Scientists have measured the rate of growth of the Atlantic Ocean basin to be about 2 to 3 cm per year. This type of activity coincides with the formation of ridges on the ocean floor. What is the most likely cause of this activity?
[ "erosion from tidal action", "the deposition of sediment", "the flow of continental basalt", "movement from tectonic plates" ]
D
null
sciq
sciq_01_02267
What helps treat bacterial infections in people?
[ "antibiotic drugs", "rest", "vaccines", "respiratory drugs" ]
A
Bacteria in food or water usually can be killed by heating it to a high temperature. Generally, this temperature is at least 71 °C (160 °F). Bacteria on surfaces such as countertops and floors can be killed with disinfectants, such as chlorine bleach. Bacterial infections in people can be treated with antibiotic drugs ...
sciq
sciq_01_03523
What do you call a group of organisms of the same species that live in the same area?
[ "ecosystem", "population", "biosphere", "system" ]
B
Communities are made up of populations of different species. In biology, a population is a group of organisms of the same species that live in the same area. The population is the unit of natural selection and evolution. How large a population is and how fast it is growing are often used as measures of its health.
sciq
sciq_01_02245
What do wind turbines turn wind energy into?
[ "carbon", "hydrogen", "electricy", "oxygen" ]
C
Wind energy is energy provided by the blowing wind. Wind turbines, like those in Figure above , can turn wind energy into electricity. The wind blows because of differences in heating of Earth’s atmosphere by the sun. There will never be a shortage of wind.
openbookqa
obqa_02_01849
If the temperature is 34 degrees Fahrenheit, what could be put on top of the icy sidewalk to turn the ice to liquid?
[ "sodium", "dry leaves", "pebbles", "dry ice" ]
A
adding salt to a liquid decreases the melting point of that liquid
sciq
sciq_01_00605
What type of speciation occurs when groups from the same species are geographically isolated for long periods?
[ "symbiotic", "asexual", "allopatric", "prokaryotic" ]
C
Allopatric speciation occurs when groups from the same species are geographically isolated for long periods. Imagine all the ways that plants or animals could be isolated from each other:.
medmcqa
medmcqa_05_03995
Commonest presenting symptom of Pott's spine is: March 2007
[ "Cold abscess", "Back pain", "Decreased spinal movements", "Collapse of spine" ]
B
Ans. B: Back Pain Tuberculosis (TB) of the spine (Pott's disease) is the most common site of bone infection in TB. The lower thoracic and upper lumbar veebrae are the areas of the spine most often affected. Pott's disease results from haematogenous spread of tuberculosis from other sites, often pulmonary. The infection...
sciq
sciq_01_06129
Alchemy helped improve the study of metallurgy and the extraction of metals from what?
[ "air", "water", "wood", "ores" ]
D
However, out of all this secrecy came several contributions to modern-day chemistry. Early acids and bases were discovered. Glassware for running chemical reactions was developed. Alchemy helped improve the study of metallurgy and the extraction of metals from ores. More systematic approaches to research were being dev...
medmcqa
medmcqa_05_04977
Which of the following diagnostic techniques is most specific for pulmonary embolism
[ "Pulmonary angiography", "Ventilation lung scanning", "Perfusion lung scanning", "Aerial blood gas analysis" ]
A
CT pulmonary angiography is the first-line diagnostic test for pulmonary thromboembolism.It has the advantages of visualising the distribution and extent of the emboli,or highlighting an alternative diagnosis,such as consolidation,pneumothorax or aoic dissection.A definitive diagnosis of Pulmonary embolism depends on v...
medmcqa
medmcqa_05_00417
Wagner and Grossman theory is related to:
[ "Palatal palsy", "Vocal cord palsy", "Facial palsy", "Hypoglossal palsy" ]
B
Semons law and wegner and Grossman hypothesis are both related to vocal cord palsy. Wagner grossman hypothesis states that in U/L recurrent laryngeal nerve palsy, cricothyroid muscle which receives innervation from superior laryngeal nerve keeps the cord in paramedian position due to its adduction action.
openbookqa
obqa_02_02358
A compass arrow points north, to the right of a person. If the person wants to go west, the would
[ "turn around", "go straight", "go left", "go right" ]
B
the floating arrow on a compass always points towards the north
sciq
sciq_01_05721
What type of state do most fungi spend their lives in?
[ "haploid", "diploid", "meiosis", "triploid" ]
A
Most fungi are multicellular, but some exist as single cells. Fungi spend most of their life cycle in the haploid state. They form diploid cells only during sexual reproduction. Like the cells of protists and plants, the cells of fungi have cell walls. But fungi are unique in having cell walls made of chitin instead of...
math_qa
mathqa_03_01545
if 90 % of a = 30 % of b and b = c % of a , then the value of c is ?
[ "900", "800", "600", "300" ]
D
"answer ∵ 90 a / 100 = 30 b / 100 = ( 30 / 100 ) x ac / 100 ∴ c = 100 x ( 100 / 30 ) x ( 90 / 100 ) = 300 correct option : d"
sciq
sciq_01_07441
What helps determine the concentration of a species in a solution?
[ "quantitative analysis", "qualitative analysis", "technical analysis", "fundamental analysis" ]
A
Summary The concentration of a species in solution can be determined by quantitative analysis. One such method is a titration, in which a measured volume of a solution of one substance, the titrant, is added to a solution of another substance to determine its concentration. The equivalence point in a titration is the p...
sciq
sciq_01_04571
Hundreds of organelles called myofibrils, made up of two types of protein filaments, are contained in each fiber of what?
[ "hair", "muscle", "cartilage", "bone" ]
B
Each muscle fiber contains hundreds of organelles called myofibrils . Each myofibril is made up of two types of protein filaments: actin filaments, which are thinner, and myosin filaments, which are thicker. Actin filaments are anchored to structures called Z lines (see Figure below ). The region between two Z lines is...
sciq
sciq_01_10612
By 180 million years ago, pangaea began to do what?
[ "break up", "combine", "grow", "freeze" ]
A
By 180 million years ago, Pangaea began to break up. The continents started to drift apart. They slowly moved to where they are today. The movement of the continents caused Panthalassa to break into smaller oceans. These oceans are now known as the Pacific, Atlantic, Indian, and Arctic Oceans. The waters of all the oce...
math_qa
mathqa_03_02083
in an examination 35 % of the students passed and 260 failed . how many students appeared for the examination ?
[ "a", "b", "c", "d" ]
B
"let the number of students appeared be x then , 65 % of x = 260 65 x / 100 = 260 x = 260 * 100 / 65 = 400 answer is b"
math_qa
mathqa_03_02604
the food in a camp lasts for 40 men for 45 days . if fifteen more men join , how many days will the food last ?
[ "80 days", "33 days", "35 days", "16 days" ]
B
one man can consume the same food in 40 * 45 = 1800 days . 15 more men join , the total number of men = 55 the number of days the food will last = 1800 / 55 = 33 days . answer : b
medmcqa
medmcqa_05_01129
In a Down's syndrome patient posted for surgery, the necessary preoperative investigation to be done is –
[ "CT Brain", "Echocardiography", "Ultrasound Abdomen", "X-ray cervical spine" ]
B
Congenital heart disease (especially endocardial cushion defect) is frequently found in Down's syndrome. Echocardiography is therefore considered necessary preoperative investigation.
sciq
sciq_01_03603
The main components of the circulatory system are the heart, blood vessels, and what else?
[ "blood", "brain", "lungs", "nerves" ]
A
The circulatory system can be compared to a system of interconnected, one-way roads that range from superhighways to back alleys. Like a network of roads, the job of the circulatory system is to allow the transport of materials from one place to another. As described in Figure below , the materials carried by the circu...
sciq
sciq_01_09060
What kind of potentially harmful compounds can barbecuing food create?
[ "enzymes", "carcinogens", "triglycerides", "mutagens" ]
B
Barbecued foods are cooked at very high temperatures. This may cause carcinogens to form.
openbookqa
obqa_02_00296
If a wolf is unable to catch prey reliably, the wolf will
[ "show ribs", "hunt more", "have pups", "take naps" ]
A
as the amount of food an animal eats decreases , that organism will become thinner
ARC-Challenge
arc_04_03183
The Earth and the Moon have all of these common features except
[ "core.", "crust.", "water.", "mantle." ]
C
null
sciq
sciq_01_04920
A statement is considered what if it is open to being falsified?
[ "premature", "hypothesis", "valid", "untrue" ]
B
At a given temperature, individual particles of a substance have a range of kinetic energies.
openbookqa
obqa_02_03221
If a thing creates sugars in a natural system, then it is likely a
[ "daffodil", "wolf", "rabbit", "deer" ]
A
a producer is a source of sugar in an ecosystem
math_qa
mathqa_03_04351
if 25 % of x is 30 less than 15 % of 1500 , then x is ?
[ "872", "738", "837", "780" ]
D
"25 % of x = x / 4 ; 15 % of 1500 = 15 / 100 * 1500 = 225 given that , x / 4 = 225 - 30 = > x / 4 = 195 = > x = 780 . answer : d"
sciq
sciq_01_08302
Groundwater dissolves minerals and rocks into what?
[ "grit", "ions", "sand", "gravel" ]
B
Groundwater dissolves minerals and rocks into ions. Groundwater deposits those ions into different types of structures. Limestone caves are the best place to see these structures. Water erodes the cave and it has deposits structures like stalactites and stalagmites. The cave pictured here is Carlsbad Caverns in New Mex...
math_qa
mathqa_03_01377
9 people decided to split the restaurant bill evenly . if the bill was $ 314.16 dollars , how much money did they 1 cent is the smallest unit ?
[ "$ 314.16", "$ 314.17", "$ 314.18", "$ 314.19" ]
D
this is equivalent to finding the first number that is divisible by 9 that occurs after 31416 . in order to divide the sum in 9 parts , the amount must be divisible by 9 divisibility rule of 9 : the sum of the digits must be divisible by 9 sum of digits of 31416 = 15 and 18 is divisible by 9 . hence , we need to add 3 ...
medmcqa
medmcqa_05_00629
Reaction of soluble antigen with antibody is known as -
[ "Agglutination", "Precipitation", "Flocculation", "Complement fixation" ]
B
When a soluble antigen combines with its antibody in the presence of electrolytes at a suitable temperature and pH, the antigen-antibody complex form an insoluble precipitate. This is called precipitation reactions. Reference:Anathanarayan & paniker's 9th edition, pg no: 105 <\p>
medmcqa
medmcqa_05_03070
Fast breathing in a 3 year old child is?
[ "> 60", ">50", ">40", ">30" ]
C
ANSWER: (C) > 40REF: OP Ghai 7th ed p. 356According to WHO fast respiratory rate:>60/ min< 2 months> 50/min2-12 months>40/min12-60 months
sciq
sciq_01_06384
What technique is used by insects and birds to find food, mates, and safety from predators?
[ "mating", "sleeping", "flying", "playing" ]
C
Other than insects, virtually no other animals can inhabit the airy world. Flying is a sure-fire way to escape from all but the quickest nonflying predators. Flying also gives birds a good view for finding food and mates.
ARC-Challenge
arc_04_02986
Which of the following is a by-product of cellular respiration in animals?
[ "oxygen", "heat", "sugar", "protein" ]
B
null
sciq
sciq_01_05028
Which reproduction produces offspring genetically identical to the one parent?
[ "sexual", "microscopic", "asexual", "bsexual" ]
C
That is the main difference between sexual and asexual reproduction. Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.
sciq
sciq_01_11326
What force explains why a tennis ball bounces differently on different surfaces, and shoes slip on some surfaces but stick on others?
[ "vibration", "friction", "kinetics", "temperature" ]
B
Tennis is played on a variety of court surfaces: grass, clay, hardcourt, and even carpet. Players know that matches on different surfaces are distinctly different games. The ball bounces differently, and shoes slip on some surfaces but stick on others. These differences are a result of friction.
math_qa
mathqa_03_04470
the greatest number which on dividing 1642 and 1856 leaves remainders 6 and 4 respectively , is :
[ "123", "127", "235", "4" ]
D
"explanation : required number = h . c . f . of ( 1642 - 6 ) and ( 1856 - 4 ) = h . c . f . of 1636 and 1852 = 4 . answer : d"
medmcqa
medmcqa_05_01190
Which of the following is not seen during leucopoiesis:
[ "Myeloblast.", "Normoblast.", "Myelocyte.", "Metamyelocyte." ]
B
Normoblasts are seen during erythropoiesis.
ARC-Challenge
arc_04_02678
A new battery claims that it "lasts twice as long as competing batteries under the same loading conditions." Which comparison of the battery with competing batteries would validate this claim?
[ "It is twice as large.", "It contains more electrons.", "It stores more chemical energy.", "It destroys less energy when used." ]
C
null
openbookqa
obqa_02_02644
If the stars in the sky above your home vary from month to month,
[ "that is a new phenomenon", "that is expected due to the axis", "that is very scary", "that is rare and unusual" ]
B
the Earth revolving around the sun causes stars to appear in different areas in the sky at different times of year
math_qa
mathqa_03_02533
an amount of money is to be divided between p , q and r in the ratio of 3 : 7 : 12 . if the difference between the shares of p and q is rs . 2500 , what will be the difference between q and r ' s share ?
[ "2225", "2325", "2425", "2625" ]
D
"4 - - - 2100 5 - - - ? = > 2625 answer : d"
ARC-Easy
arc_04_00271
The boiling of water results in a physical change in matter from
[ "solid to liquid.", "gas to solid.", "solid to gas.", "liquid to gas." ]
D
null
sciq
sciq_01_01488
Why is uranus so faint?
[ "polluted atmosphere", "far away", "too small", "too cold" ]
B
Uranus is faint because it is very far away. Its distance from the Sun is 2.8 billion kilometers (1.8 billion miles). A photon from the Sun takes about 2 hours and 40 minutes to reach Uranus. Uranus orbits the Sun once about every 84 Earth years.
sciq
sciq_01_08763
Of all the electromagnetic waves, which have the lowest frequencies?
[ "X-rays", "gamma rays", "radio waves", "ultraviolet rays" ]
C
On the left side of the electromagnetic spectrum diagram are radio waves and microwaves. Radio waves have the longest wavelengths and lowest frequencies of all electromagnetic waves. They also have the least amount of energy.
math_qa
mathqa_03_03073
working together , jose and jane can complete an assigned task in 15 days . however , if jose worked alone and complete half the work and then jane takes over the task and completes the second half of the task , the task will be completed in 45 days . how long will jose take to complete the task if he worked alone ? as...
[ "26 days", "31 days", "50 days", "65 days" ]
C
"assume : jose does 1 job in x days , so jose does 1 / x job in a day jane does 1 job in y days , so jane does 1 / y job in a day together , they does ( x + y ) / xy job in a day . this is equals to 1 / 20 . so ( x + y ) / xy = 1 / 15 15 ( x + y ) = xy next , we ' re told 1 job takes 45 days to complete if jose and jan...
sciq
sciq_01_10242
What is a representation of the valence electrons of an atom that uses dots around the symbol of the element?
[ "watson structure", "time structure", "lewis structure", "right structure" ]
C
In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons interact, a simple way of representing those valence electrons would be useful. A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis struc...
openbookqa
obqa_02_00382
If I wanted to get more energy after exerting myself too much
[ "I can consume an apple", "I can go for a run", "I can brush my hair", "I can wash my face" ]
A
living things all require energy for survival
ARC-Easy
arc_04_01911
Which resource, abundant in Nevada, is nonrenewable?
[ "copper", "wind", "sunlight", "wood" ]
A
null
math_qa
mathqa_03_03656
a school has received 60 % of the amount it needs for a new building by receiving a donation of $ 400 each from people already solicited . people already solicited represent 40 % of the people from whom the school will solicit donations . how much average contribution is requited from the remaining targeted people to c...
[ "$ 200", "$ 177.78", "$ 100", "$ 277.78" ]
B
"let us suppose there are 100 people . 40 % of them donated $ 16000 ( 400 * 40 ) $ 16000 is 60 % of total amount . so total amount = 16000 * 100 / 60 remaining amount is 40 % of total amount . 40 % of total amount = 16000 * ( 100 / 60 ) * ( 40 / 100 ) = 32000 / 3 this amount has to be divided by 60 ( remaining people a...
sciq
sciq_01_07636
In the equation for pressure, how is force expressed?
[ "pounds", "teraflops", "newtons", "meters" ]
C
In the equation for pressure, force is expressed in newtons (N) and area is expressed in square meters (m 2 ). Therefore, pressure is expressed in N/m 2 , which is the SI unit for pressure. This unit is also called the pascal (Pa) . It is named for the scientist Blaise Pascal, whose discovery about pressure in fluids i...
sciq
sciq_01_02960
Because it produces oxygen, what plant process was necessary for the evolution of animals?
[ "death", "reproduction", "germination", "photosynthesis" ]
D
Eventually plants evolved. Plants produce oxygen as a product of photosynthesis. Oxygen spread around the planet about 2.5 billion years ago. Many organisms died off because they could not handle the oxygen. But this development was extremely important for other life. Animals need oxygen to breathe. If photosynthesis h...
medmcqa
medmcqa_05_00342
In Prader Willi syndrome, which of the following is increased?
[ "LH", "FSH", "Growth hormone", "Ghrelin" ]
D
Prader-Willi syndrome (PWS) is a genetic disorder occurring in 1 of 10,000-16,000 live bihs and is characterized by excessive appetite with progressive massive obesity as well as sho stature and mental retardation. Most patients have GH deficiency and hypogonadotropic hypogonadism (low levels of FSH, LH). The cause of ...
sciq
sciq_01_08812
What can accept a wide range of carbohydrates for catabolism?
[ "cellular respiration", "glycolysis", "photosynthesis", "enzymes" ]
B
sciq
sciq_01_10985
The wrist and base of the hand are formed by what series of small bones arranged in distal and proximal rows?
[ "carpal", "ribs", "patella", "cranial" ]
A
Carpal Bones The wrist and base of the hand are formed by a series of eight small carpal bones (see Figure 8.7). The carpal bones are arranged in two rows, forming a proximal row of four carpal bones and a distal row of four carpal bones. The bones in the proximal row, running from the lateral (thumb) side to the media...
sciq
sciq_01_10762
What type of winds blow over a limited area?
[ "gales", "trade winds", "local winds", "hurricanes" ]
C
Local winds are winds that blow over a limited area. They are influenced by local geography, such as nearness to an ocean. They include land and sea breezes as well as monsoons.
openbookqa
obqa_02_01066
how much time does it take the third planet from the sun to make a full turn?
[ "23 hours", "twenty-one hours", "twenty-four hours", "22 hours" ]
C
one day is equal to 24 hours
sciq
sciq_01_09191
A sequence of amino acids in single polypeptide is the primary structure for what?
[ "proteins", "dna", "cells", "lipids" ]
A
Protein Structure. Primary protein structure is the sequence of amino acids in a single polypeptide. Secondary protein structure refers to internal shapes, such as alpha helices and beta pleated sheets, that a single polypeptide takes on due to bonds between atoms in different parts of the polypeptide. Tertiary protein...
sciq
sciq_01_01523
Each enhancer is made up of short dna sequences called what?
[ "electrolysis control elements", "distal control elements", "fibrous control elements", "pisttal control elements" ]
B
Figure 16.9 An enhancer is a DNA sequence that promotes transcription. Each enhancer is made up of short DNA sequences called distal control elements. Activators bound to the distal control elements interact with mediator proteins and transcription factors. Two different genes may have the same promoter but different d...
sciq
sciq_01_00750
What occurs if oxygen cannot be obtained at a sufficient rate?
[ "hyperventilation", "anaerobic respiration", "malolactic respiration", "aerobic respiration" ]
B
Phil Roeder. Anaerobic respiration occurs if oxygen cannot be obtained at a sufficient rate . CC-BY 2.0.
sciq
sciq_01_06564
How do plants grow?
[ "through mitosis and cell division", "through pollination and cell division", "through cell growth and sexual reproduction", "through cell growth and cell division" ]
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. Cell division increases the number of cells.
medmcqa
medmcqa_05_00507
In Burkitts lymphoma , translocation seen is chromosome
[ "12 -14 translocation", "8-14 translocation", "4-8 translocation", "12-18 translocation" ]
B
Ans. is 'b' 8-14 translocation Chromosomal translocations Associated Neoplasms8 - 14 -Burkitt's lymphoma*.Acute lymphocytic leukemia (FAB type L3) Immunoblastic B cell lymphoma*15-17 -Promyelocytic leukemia*4-11 -Acute lymphocytic leukemiaH-14 -Chronic lymphocytic leukemia14- 18 -Some B cell lymphomas6 - 14 -Cystadenoc...
sciq
sciq_01_10505
Since electrons are charged, their intrinsic spin creates a what?
[ "intrinsic magnetic field", "intrinsic electrical field", "magnified rupulsed field", "suppressed electrical field" ]
A
We already know that the magnitude of angular momentum is quantized for electron orbits in atoms. The new insight is that the direction of the orbital angular momentum is also quantized. The fact that the orbital angular momentum can have only certain directions is called space quantization. Like many aspects of quantu...
sciq
sciq_01_01971
Organism's changing over time is called?
[ "heterogenicity", "evolution", "generation", "variation" ]
B
Evolution means change over time. Darwin’s theory of evolution says that organisms change over time ( Figure below ). Evolution is seen in the fossil record. It is seen in the way organisms develop. Evolution is evident in the geographic locations where organism are found. It is evident in the genes of living organisms...
medmcqa
medmcqa_05_04833
Casper's dictum is related to: AI 09; MP 11
[ "Identification of dead body", "Calculation of time since death", "Floatation of a dead body", "Rate of putrefaction" ]
D
Ans. Rate of putrefaction
sciq
sciq_01_09348
An estimated 99 percent of the species that have ever lived on earth no longer exist, showing that what event is common?
[ "extinction", "accumulation", "pollution", "over fishing" ]
A
Even though large life forms have been very successful on Earth, most of the life forms on Earth today are still prokaryotes—small, relatively simple single-celled organisms. Fossils indicate that many organisms that lived long ago are extinct. Extinction of species is common; in fact, it is estimated that 99% of the s...
sciq
sciq_01_01800
The major cause of outdoor air pollution is the burning of?
[ "trash", "charcoal briquettes", "fossil fuels", "trees" ]
C
The major cause of outdoor air pollution is the burning of fossil fuels.
medmcqa
medmcqa_05_00607
Earliest clinical manifestation of siderosis bulbi
[ "Iris is stained greenish", "Retinal pigmentary degeneration", "Glaucoma", "Rusty deposits in the anterior subcapsular cells of the lens" ]
D
These rusty deposits are arrested radially in a ring ---- Earliest manifestation.
openbookqa
obqa_02_03126
which of these has the most similar component as the earth itself?
[ "the stone in the yard", "a loaf of bread", "a can of soup", "a glass of water" ]
A
Earth is made of rock
openbookqa
obqa_02_03617
If a thing will take dirt and dead pieces of matter and process them through their own bodies, they are likely
[ "humans", "whales", "nightcrawlers", "babies" ]
C
decomposer is a kind of role in an ecosystem
openbookqa
obqa_02_02403
Which would be the best conditions to drive in?
[ "heavy snowfall + cold weather", "blizzard conditions + hurricanes", "blizzard conditions + lightning", "blizzard conditions + earthquakes" ]
A
bad weather decreases visibility while driving
sciq
sciq_01_07853
Where is gabbro found?
[ "wetlands", "oceanic crust", "forest floor", "volcanoes" ]
B
Gabbro is a dark dense rock that can be found in oceanic crust.
math_qa
mathqa_03_01580
find the value of 85 p 3 .
[ "565350", "595650", "535950", "565350" ]
B
"85 p 3 = 85 ! / ( 85 - 3 ) ! = 85 ! / 82 ! = 85 * 84 * 83 * 82 ! / 82 ! = 85 * 84 * 83 = 595650 answer : b"
openbookqa
obqa_02_02836
If a person is navigating then they are most likely
[ "sitting indoors", "holding a wheel", "reading a book", "laying in bed" ]
B
An example of navigation is directing a boat
sciq
sciq_01_02929
What kind of bases completely dissociate in water, releasing all hydroxide anions into the solution?
[ "weak", "whole", "unusual", "strong" ]
D
Strong bases completely dissociate in water, releasing all hydroxide anions into the solution. The most common strong bases are soluble metal hydroxides. Weak bases partially deprotonate water to form small amounts of hydroxide and the protonated base.
math_qa
mathqa_03_02749
a bag contains 3 red , 5 yellow and 4 green balls . 3 balls are drawn randomly . what is the probability that balls drawn contain exactly two green balls ?
[ "9 / 16", "7 / 18", "12 / 55", "14 / 67" ]
C
total number of balls = 3 + 5 + 4 = 12 n ( s ) = 12 c 3 = 12 * 11 * 10 / 3 * 2 = 220 n ( e ) = 4 c 2 * 8 c 1 = 6 * 8 = 48 probability = 48 / 220 = 12 / 55 answer is c
ARC-Easy
arc_04_00341
The fossils that are found in the oldest layers of sedimentary rock were formed which types of organisms?
[ "only organisms that lived in the sea", "only organisms that lived on land", "only organisms that lived in the air", "organisms that lived on the land, in the sea and in the air" ]
A
null
sciq
sciq_01_05315
Why are atoms of metals good conductors of electricity?
[ "conserve heat", "hold on to electrons", "give up electrons", "break into smaller parts" ]
C
Electricity is a flow of electrons. Atoms of metals tend to give up electrons, explaining why they are good conductors of electricity. The tendency to give up electrons also explains many of the other properties of metals.
sciq
sciq_01_02541
Polar molecules result from differences in electronegativity of what in the molecule?
[ "ions", "protons", "atoms", "iron" ]
C
Polar molecules result from differences in electronegativity of the atoms in the molecule.
sciq
sciq_01_04233
Hair color and skin color are known as what?
[ "abominations", "mutations", "habits", "traits" ]
D
What is the difference between a trait and a genetic disorder ? Could a disorder be considered a trait? We tend to think of traits as hair color or skin color and disorders as something that is bad for you. But in terms of genetics, a genetic disorder is a trait. Both may be due to your genes. Traits may be inherited i...
sciq
sciq_01_03562
What is the name for the disease in which cells divide out of control?
[ "mutation", "diabetes", "cancer", "angina" ]
C
Knowledge gained by this basic research on yeast cells has been applied to practical problems. Scientists have developed drugs to treat cancer based on knowledge of the cell cycle. Cancer is a disease in which cells divide out of control. The new drugs interfere with the cell cycle of cancer cells, so the cells stop di...
sciq
sciq_01_10993
Do nonvascular or vascular plants have a dominant sporophyte generation?
[ "nonvascular", "vascular", "deciduous", "perennial" ]
B
Unlike nonvascular plants, all vascular plants—including seedless vascular plants—have a dominant sporophyte generation. Seedless vascular plants include clubmosses and ferns. Figure below shows a typical fern life cycle.
openbookqa
obqa_02_02338
When syrup is added to vodka, the flammable portion of the mixture will
[ "raise", "fall", "sink", "settle" ]
A
denser liquids settle below liquids that are less dense
ARC-Easy
arc_04_01465
The nose, mouth, and diaphragm are parts of which body system?
[ "digestive", "muscular", "circulatory", "respiratory" ]
D
null