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7.76k
ARC-Challenge
arc_04_02660
Mrs. Tucker gives her class samples of different soil types. Which action best helps Tanisha identify each soil type?
[ "smelling it", "touching it", "weighing it", "measuring it" ]
B
null
math_qa
mathqa_03_03022
a property decreases in value every year at the rate of 6 1 / 4 % of its value at the beginning of the year its value at the end of 3 years was rs . 21093 . find its value at the beginning of the first year ?
[ "25600.24", "25600.27", "25600.28", "25600.21" ]
A
6 1 / 4 % = 1 / 16 x * 15 / 16 * 15 / 16 * 15 / 16 = 21093 x = 25600.24 answer : a
medmcqa
medmcqa_05_01966
In open Angle Glaucoma which investigation is least useful
[ "Indirect opthalmoscopy", "Tonometry", "Direct opthalmoscopy", "Perimetry" ]
A
A i.e. Indirect ophthalmoscopy Baseline Evaluation in PAOG before initiation of therapy includes Visual Acuity Slitlamp biomicroscopy to rule out any signs of secondary glaucomas Applanation Tonometry to measure the IOP (> 21 mm Hg) Gonioscopy to assess the angle (an open angle of normal appearance) Ophthalmoscopy to a...
sciq
sciq_01_08549
What is a form of matter that has a definite volume, but an indefinite shape?
[ "a plasma", "a liquid", "a solid", "a gas" ]
B
A liquid is a form of matter that has a definite volume, but an indefinite shape. As water is poured from one container into another, it adopts the shape of its new container. However, the volume of the water does not change, because the water molecules are still relatively close to one another in the liquid state. Unl...
ARC-Easy
arc_04_00652
Electricity to play your radio can be made using renewable or nonrenewable resources. Which of the following resources are renewable?
[ "wind and oil", "wind and sunlight", "natural gas and oil", "natural gas and coal" ]
B
null
sciq
sciq_01_06184
In what type of process does heat flow into its surroundings and cause an increase in kinetic energy?
[ "oscillating process", "exothermic process", "chemical process", "biochemical process" ]
B
In general, the process of interest is taking place in the system, and there are no changes in the composition of the surroundings. However, the temperature of the surroundings does generally change. Entropy changes in the surroundings are determined primarily by the flow of heat into or out of the system. In an exothe...
sciq
sciq_01_09185
What branch of biology studies animal behavior?
[ "geology", "embryology", "ethology", "microbiology" ]
C
The branch of biology that studies animal behavior is called ethology . Ethologists usually study how animals behave in their natural environment, rather than in a lab. They generally try to answer four basic questions about the behaviors they observe:.
math_qa
mathqa_03_01096
what is 5 + 7
[ "2", "4", "10", "12" ]
D
d
sciq
sciq_01_01825
Potassium is a soft, silvery metal that ignites explosively in what?
[ "air", "cold", "acid", "water" ]
D
Potassium is a soft, silvery metal that ignites explosively in water. It easily loses its one valence electron to form positive potassium ions (K + ), which are needed by all living cells. Potassium is so important for plants that it is found in almost all fertilizers, like the one shown here. Potassium is abundant in ...
sciq
sciq_01_04603
What is the most common type of cancer in adult females?
[ "lung", "breast", "bone", "skin" ]
B
The most common type of cancer in adult females is cancer of the breast. About one third of all cancers in women are breast cancers.
medmcqa
medmcqa_05_02876
The commonest cause of paraplegia is-
[ "Tuberculosis", "Trauma", "Secondaries", "Transverse myelitis" ]
B
Ans-B
openbookqa
obqa_02_01950
The more active an animal is
[ "their water level will stay steady", "the less H2O they need to stay hydrated", "the more H20 they should take in", "the less likely they are to sweat or pant" ]
C
as the activity of an animal increases , the amount of water in an animal 's body in that environment will decrease
sciq
sciq_01_08587
Which group of the periodic table consists of hydrogen and the alkali metals?
[ "group 3", "group 4", "group 2", "group 1" ]
D
Group 1 of the periodic table consists of hydrogen and the alkali metals. Hydrogen is a very reactive nonmetal. The alkali metals are the most reactive metals.
sciq
sciq_01_02235
What are the basic building blocks of the human body?
[ "proteins", "vitamins", "cells", "minerals" ]
C
The basic building blocks of the human body are cells. Human cells are organized into tissues, tissues are organized into organs, and organs are organized into organ systems.
openbookqa
obqa_02_03447
a desert environment has low
[ "sand count", "cacti", "dryness", "wet sky falling" ]
D
a desert environment has low rainfall
math_qa
mathqa_03_03487
if d = 1 / ( 2 ^ 3 * 5 ^ 11 ) is expressed as a terminating decimal , how many nonzero digits will d have ?
[ "one", "two", "three", "seven" ]
C
"another way to do it is : we know x ^ a * y ^ a = ( x * y ) ^ a given = 1 / ( 2 ^ 3 * 5 ^ 11 ) = multiply and divide by 2 ^ 8 = 2 ^ 8 / ( 2 ^ 3 * 2 ^ 8 * 5 ^ 11 ) = 2 ^ 8 / 10 ^ 11 = > non zero digits are 256 = > ans c"
math_qa
mathqa_03_04164
a certain bacteria colony doubles in size every day for 21 days , at which point it reaches the limit of its habitat and can no longer grow . if two bacteria colonies start growing simultaneously , how many days will it take them to reach the habitat ’ s limit ?
[ "6.33", "7.5", "20", "15" ]
C
"if there is one bacteria colony , then it will reach the limit of its habitat in 21 days . if there are two bacteria colonies , then in order to reach the limit of habitat they would need to double one time less than in case with one colony . thus colonies need to double 20 times . answer : c . similar questions to pr...
ARC-Easy
arc_04_02074
Which adaptive feature most helps a baby jaguar survive the first few weeks of life?
[ "the ability to roar", "the ability to hunt", "a diet of land mammals", "being born during spring months" ]
D
null
ARC-Challenge
arc_04_02700
In plants, which describes sexual reproduction but not asexual reproduction?
[ "Five limbs are grafted onto the same tree.", "New plants are grown from pieces of other plants.", "A fertilized egg cell divides to produce an embryo.", "Offspring are produced that have the same genetic information as the parent." ]
C
null
sciq
sciq_01_01655
Mutualism is a symbiotic relationship that has what effect on both species involved?
[ "disadvantageous", "harmful", "destructive", "beneficial" ]
D
Mutualism is a symbiotic relationship in which both species benefit.
math_qa
mathqa_03_02900
two ships are sailing in the sea on the two sides of a lighthouse . the angle of elevation of the top of the lighthouse is observed from the ships are 30 ° and 45 ° respectively . if the lighthouse is 100 m high , the distance between the two ships is :
[ "173 m", "200 m", "273 m", "300 m" ]
C
let ab be the lighthouse and c and d be the positions of the ships . then , ab = 100 m , acb = 30 ° and adb = 45 ° . ab = tan 30 ° = 1 ac = ab x 3 = 1003 m . ac 3 ab = tan 45 ° = 1 ad = ab = 100 m . ad cd = ( ac + ad ) = ( 1003 + 100 ) m = 100 ( 3 + 1 ) = ( 100 x 2.73 ) m = 273 m . answer = c
ARC-Challenge
arc_04_02280
Which is evidence of a chemical reaction?
[ "the light produced by magnesium when burned", "the evaporation of water from a solution", "the fizzing of a soft drink", "the heat from a light bulb" ]
A
null
sciq
sciq_01_02530
What do fungi produce to digest nutrients?
[ "amino", "pores", "sporozoans", "exoenzymes" ]
D
The ability of fungi to degrade many large and insoluble molecules is due to their mode of nutrition. As seen earlier, digestion precedes ingestion. Fungi produce a variety of exoenzymes to digest nutrients. The enzymes are either released into the substrate or remain bound to the outside of the fungal cell wall. Large...
sciq
sciq_01_08388
The primary application of biotechnology is in what field?
[ "medicine", "chemistry", "physics", "psychology" ]
A
10.1 | Cloning and Genetic Engineering By the end of this section, you will be able to: • Explain the basic techniques used to manipulate genetic material • Explain molecular and reproductive cloning Biotechnology is the use of artificial methods to modify the genetic material of living organisms or cells to produce no...
sciq
sciq_01_02081
Dermal tissue covers the outside of a plant in a single layer of cells called what?
[ "cuticle", "scales", "cambium layer", "the epidermis" ]
D
Dermal tissue covers the outside of a plant in a single layer of cells called the epidermis . You can think of the epidermis as the plant’s skin. It mediates most of the interactions between a plant and its environment. Epidermal cells secrete a waxy substance called cuticle , which coats, waterproofs, and protects the...
openbookqa
obqa_02_03252
which one of these animals lives deepest in the ocean?
[ "an african parrot", "gold fish", "a tuna fish", "a vampire squid" ]
D
deep sea animals live deep in the ocean
sciq
sciq_01_10186
What part of the cell does cellular respiration occur?
[ "proton", "nuclei", "glucose", "mitochondria" ]
D
Cellular respiration occurs in the mitochondria. Figure 20.13 "Respiration" shows the mitochondrion’s two membranes: outer andinner. The inner membrane is extensively folded into a series of internal ridges calledcristae. Thus there are two compartments in mitochondria: the intermembrane space, which lies between the m...
math_qa
mathqa_03_01424
think of a number , divide it by 5 and add 8 to it . the result is 61 . what is the number thought of ?
[ "24", "77", "297", "265" ]
D
"explanation : 61 - 6 = 53 53 x 5 = 265 answer : d"
sciq
sciq_01_00164
What is defined as a repeating series of events that include growth, dna synthesis, and cell division?
[ "puberty", "cell cycle", "photosynthesis", "meiosis" ]
B
Cell division is just one of several stages that a cell goes through during its lifetime. The cell cycle is a repeating series of events that include growth, DNA synthesis, and cell division. The cell cycle in prokaryotes is quite simple: the cell grows, its DNA replicates, and the cell divides. In eukaryotes, the cell...
openbookqa
obqa_02_04363
A thing which is a producer in the food chain is most likely to be a
[ "squid", "clover", "mouse", "hawk" ]
B
producer is a kind of role in the food chain process
sciq
sciq_01_07391
Where can you find sodium acetate?
[ "a heat pack", "a cold pack", "table salt", "baking soda" ]
A
In the picture above, a thermal pack is applied to the back. Small packs can be used either for heating or cooling, depending on the material used. A heat pack contains a supersaturated solution of material such as sodium acetate. The solution is clear until a small metal trigger is activated. The sodium acetate then c...
openbookqa
obqa_02_04269
Where might you find a live, breathing eagle?
[ "the moon", "in a thimble", "the woods", "a programming language" ]
C
some birds live in forests
sciq
sciq_01_05656
Whose rules are too simple to explain the inheritance of human height?
[ "Darwin", "Einstein", "mendel", "Pascal" ]
C
Unlike Mendel's peas, people do not all fall into two categories: short or tall. Most people, in fact, are somewhere in between. Obviously, Mendel's rules are too simple to explain the inheritance of human height.
openbookqa
obqa_02_03558
which one of these can be used to power up a system?
[ "a handful of sand", "a liter of water", "a bowl of water", "a tin of gasoline" ]
D
oil is a source of energy
sciq
sciq_01_09203
Unlike ionic compounds, covalent compounds do not have freely moving what?
[ "electrons", "atoms", "neutrons", "Nuclei." ]
A
Unlike ionic compounds, covalent compounds do not have freely moving electrons, so they cannot conduct electricity.
ARC-Challenge
arc_04_02489
Students make weather observations outside the school building, and then they record their observations. Which observation should be recorded as a fact?
[ "The air feels very cold.", "The wind is blowing at 5 m/s.", "It is nicer than the day before.", "It looks like it might warm up later." ]
B
null
sciq
sciq_01_00984
How do most echinoderms reproduce?
[ "sexually", "asexually", "grafting", "flowering" ]
A
Some echinoderms can reproduce asexually by fission, but most echinoderms reproduce sexually. They generally have separate sexes and external fertilization. Eggs hatch into free-swimming larvae. The larvae undergo metamorphosis to change into the adult form. During metamorphosis, their bilateral symmetry changes to rad...
sciq
sciq_01_06889
Cellular respiration uses oxygen to harvest what from organic molecules?
[ "chlorophyll", "water", "light", "energy" ]
D
the evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules.
openbookqa
obqa_02_01298
When you exit a dark film theater, the world
[ "looks darker", "looks brighter", "looks the same", "looks more French" ]
B
when light enters the eye through the pupil , that light falls on the retina
openbookqa
obqa_02_03334
A glacier moves like a
[ "crocodile", "tortoise", "Komodo dragon", "rattlesnake" ]
B
a glacier moves slowly
openbookqa
obqa_02_02948
Which is the most accurate statement?
[ "octopuses avoid sharks by blinding them with a dark substance", "octopuses avoid scorpions using ink", "octopuses avoid sharks using powerful claws", "octopuses avoid scorpions by eating them" ]
A
ink is used for hiding from predators by octopuses
medmcqa
medmcqa_05_04355
Least common cause of ambiguous genitalia in female genotype:
[ "21 hydroxylase deficiency", "11 hydroxylase deficiency", "Fetal steroid sulphatase deficiency", "WT1 gene" ]
C
Ans. C. Fetal steroid sulphatase deficiencyRef: Sperojf, 9th/ed, pll9ExplanationPlacental sulfatase deficiency# There is an X-linked metabolic disease characterized by a placental sulfatase deficiency in the syncytiotrophoblast, and postnatally, ichthyosis, occurring in about 1 in 2000-3000 newborn males.# Patients wit...
sciq
sciq_01_06831
A homogeneous mixture with tiny particles in it is known as what?
[ "structure", "element", "plasmid", "solution" ]
D
A solution is a homogeneous mixture with tiny particles. An example is salt water. The particles of a solution are too small to reflect light. As a result, you cannot see them. That’s why salt water looks the same as pure water. The particles of solutions are also too small to settle or be filtered out of the mixture.
sciq
sciq_01_04276
What is the factor that affects the solubility of solutes in all three states?
[ "oxygen", "temperature", "heat", "color" ]
B
Temperature affects the solubility of solutes in all three states. Pressure also affects the solubility of gases.
medmcqa
medmcqa_05_03089
Clonus is due to?
[ "Upper motor neuron damage", "Lower motor neuron damage", "Extrapyramidal damage", "Cerebellar damage" ]
A
Ans. A Upper motor neuron damageRef: Ganong, 25th ed. pg. 233Clonus is characterized by repeated rhythmic contractions of muscle subjected to sudden maintained stretch.It is Caused by* Increased Gamma motor neuron discharge* Spinal cord injury causing damage to Renshaw cell which is an inhibitory inter-neuron.Condition...
math_qa
mathqa_03_03267
16 balls are numbered 1 to 16 . a ball is drawn and then another ball is drawn without replacement . what is the probability that both balls have even numbers ?
[ "4 / 11", "5 / 17", "6 / 25", "7 / 30" ]
D
"p ( 1 st ball is even ) = 8 / 16 p ( 2 nd ball is also even ) = 7 / 15 p ( both balls are even ) = 8 / 16 * 7 / 15 = 7 / 30 the answer is d ."
sciq
sciq_01_07528
What is anything that causes cancer called?
[ "chemical", "bacteria", "carcinogen", "pesticide" ]
C
A carcinogen is anything that causes cancer. Most carcinogens produce mutations in genes that control the cell cycle.
medmcqa
medmcqa_05_02076
A 25 year old man has pigmented macules over the palms, soles and oral mucosa. He also has anemia and abdominal pain. Which one of the following is the most likely diagnosis?
[ "Cushing's syndrome", "Albright's syndrome", "Peutz-Jegher's Syndrome", "Incontinentia pigmenti" ]
C
Cushing Syndrome Presents with lemon on sticks with hypeension and anemia Albright syndrome At least 2 / 3 features: 1. Polyostotic fibrous dysplasia 2. Cafe-au-lait skin pigmentation 3. Autonomous endocrine hyperfunction (eg, gonadotropin-independent) Peutz Jehgers syndrome Located primarily around the nose and mouth,...
ARC-Easy
arc_04_00928
Which of these structures form when materials are deposited, buried, and cemented?
[ "intrusive structures", "metamorphic rocks", "volcanic mountains", "sedimentary rocks" ]
D
null
sciq
sciq_01_00764
In the tropics what are the prevailing winds called?
[ "storm winds", "a front", "tradewinds", "crosswinds" ]
C
The major wind belts push the water in the surface currents. The water moves in the direction of :.
ARC-Challenge
arc_04_03060
For his science project, Alan began a study of sugar maple trees. He noticed many differences among the sugar maple trees near his school. Which of the following three characteristics would vary the LEAST?
[ "height", "number of leaves", "type of seeds", "trunk width" ]
C
null
sciq
sciq_01_05042
Stones, infections, and diabetes threaten the health and functioning of what paired organs?
[ "tissues", "arteries", "lungs", "kidneys" ]
D
A person can live a normal, healthy life with just one kidney. However, at least one kidney must function properly to maintain life. Diseases that threaten the health and functioning of the kidneys include kidney stones, infections, and diabetes.
medmcqa
medmcqa_05_04284
Which of the following antipsychotic isn't available as depot preparation for the treatment of psychosis?
[ "Aripiprazole", "Olanzapine", "Clozapine", "Haloperidol" ]
C
Clozapine isn't available as depot of long-acting muscular injection. clozapine is a drug that is used for trreatment of TREATMENT RESISTANT SCHIZIOPHRENIA patients the main adverse effects of clozapine was AGRANULOCYTOSIS, MYOCARDITIS, SIALORRHEA, SEIZURES, PARALYTIC ILEUS Ref: Essentials of postgraduate psychiatry By...
openbookqa
obqa_02_04497
Robins will often devour
[ "rocks", "wood", "glue", "grasshoppers" ]
D
birds sometimes eat insects
ARC-Easy
arc_04_00465
Which resource provides the minerals plants need to grow?
[ "sunlight", "water", "soil", "air" ]
C
null
sciq
sciq_01_03569
When there is no mass in a volume of space, the space is not what?
[ "flat", "timed", "straight", "curved" ]
D
When there is no mass in a volume of space, the space is not curved. An object passing through such space would follow a straight line in our normal way of thinking of a straight line.
openbookqa
obqa_02_02767
A boy hates summer with a burning passion, so luckily the longest he should ever have to endure the season is
[ "twelve weeks", "three years", "nine months", "two days" ]
A
a new season occurs once per three months
medmcqa
medmcqa_05_00667
Amastigote forms are seen in -a) Leishmania donovani b) Toxoplasma gondic) Leishmania majord) Entamoeba
[ "a", "ac", "ad", "b" ]
B
Leishmania occurs in two stages 1. Amastigote (Aflagellar stage) In the R.E. system of vertebrate host (Man, dog and hamster) 2. Promastigote (flagellar stage ) a) In gut of sand fly b) Artificial culture
math_qa
mathqa_03_01933
a store owner estimates that the average price of type a products will increase by 20 % next year and that the price of type b products will increase by 11 % next year . this year , the total amount paid for type a products was $ 3500 and the total price paid for type b products was $ 8600 . according to the store owne...
[ "$ 13,746", "$ 15,325", "$ 16,000", "$ 16,225" ]
A
"cost of type a products next year = 1.20 * 3500 = 4200 cost of type b products next year = 1.11 * 8300 = 9546 total 4200 + 9546 = 13746 answer : a"
openbookqa
obqa_02_00017
A person is lost in a dense forest, and needs to find their home. They know their home is to the south, and they are headed north. They can find home by using a
[ "northern-directing device", "northern light reader", "northeastern winds", "north central credit" ]
A
a compass is a kind of tool for determining direction by pointing north
sciq
sciq_01_03419
What is created when energy turns a turbine?
[ "electricity", "light", "torque", "force" ]
A
4. Electricity is made when some type of energy turns a turbine. Explain how this happens and give two examples.
math_qa
mathqa_03_01651
the speed of a boat in still water is 21 km / hr and the rate of current is 8 km / hr . the distance travelled downstream in 13 minutes is
[ "1.6 km", "2 km", "6.3 km", "4 km" ]
C
"explanation : speed downstreams = ( 21 + 8 ) kmph = 18 kmph . distance travelled = ( 29 x 13 / 60 ) km = 6.3 km option c"
openbookqa
obqa_02_02579
If a tiny bug needs to be closely observed, a person could enlist the use of a
[ "glass slipper", "crock pot", "ceramic plate", "enlarger" ]
D
magnifying glass is used to see small things by making objects appear bigger
ARC-Easy
arc_04_00105
Roger visited his grandfather who lives on a farm. While he was there, he helped his grandfather move hay out of the barn. As Roger worked in the barn he began sneezing. Which system of the body most likely caused Roger to sneeze?
[ "circulatory", "excretory", "digestive", "immune" ]
D
null
ARC-Challenge
arc_04_02665
Which of the following is a renewable resource?
[ "coal", "minerals", "petroleum", "sunlight" ]
D
null
sciq
sciq_01_04415
Blood is made up of red blood cells, white blood cells, platelets, and what else?
[ "hemoglobin", "plasma", "potassium", "pathogens" ]
B
Did you know that blood is a tissue? Blood is a fluid connective tissue that is made up of red blood cells, white blood cells, platelets, and plasma. The cells that make up blood are pictured below ( Figure below ). The different parts of blood have different roles.
math_qa
mathqa_03_00273
john was 19 years old when he married betty . they just celebrated their fifth wedding anniversary , and betty ' s age is now 7 / 8 of john ' s . how old is betty ?
[ "21", "26", "28", "30" ]
A
"assume betty ' s age on marriage = x years . john ' s age on marriage = 19 john ' s age after 5 years = 24 years . betty ' s age after 5 years = x + 5 given : x + 5 = 7 / 8 ( 24 ) = 21 therefore betty ' s current age = 21 option a"
math_qa
mathqa_03_00485
a glass was filled with 15 ounces of water , and 0.05 ounce of the water evaporated each day during a 15 - day period . what percent of the original amount of water evaporated during this period ?
[ "0.005 %", "0.05 %", "0.5 %", "5 %" ]
D
"in 15 days 15 * 0.05 = 0.75 ounces of water evaporated , which is 0.75 / 15 â ˆ — 100 = 5 of the original amount of water . answer : d ."
sciq
sciq_01_07606
Extended stays in zero gravity are not healthy for human beings. thus, for the comfort of the astronauts, the station is rotated so that the astronauts feel there is what?
[ "revealed gravity", "Fixed Gravity", "internal gravity", "still gravity" ]
C
A space station was established far from the gravitational field of Earth. Extended stays in zero gravity are not healthy for human beings. Thus, for the comfort of the astronauts, the station is rotated so that the astronauts feel there is an internal gravity. The rotation speed is such that the apparent acceleration ...
medmcqa
medmcqa_05_02149
Decreased Q2 carrying capacity and Normal PO2 is a feature of :
[ "Anemic hypoxia", "Histotoxic hypoxia", "Stagnant hypoxia", "Hypoxic hypoxia" ]
A
Subnormal level of hemoglobin causes decreased oxygen – carrying capacity of the blood. This in turn initiates compensatory physiologic adaptations such as : o Increased release of oxygen from hemoglobin. o Increased blood flow to the tissues. o Maintenance of the blood volume ; and o Redistribution of blood flow to ma...
sciq
sciq_01_01326
What rigid layer surrounds the cell membrane of a plant cell?
[ "epidermis", "bark", "cuticle", "cell wall" ]
D
The cell wall is a rigid layer that surrounds the cell membrane of a plant cell. It’s made mainly of the complex carbohydrate called cellulose. The cell wall supports and protects the cell. The cell wall isn’t solid like a brick wall. It has tiny holes in it called pores. The pores let water, nutrients, and other subst...
sciq
sciq_01_03413
An alternative to inclusive fitness is group selection, a type of what scenario where small groups of organisms of the same species are effectively acting as single (perhaps colonial) organisms?
[ "combination", "introductory", "molecular", "evolutionary" ]
D
Group selection A proposed alternative to inclusive fitness (sometimes known as kin selection) is the concept of group selection. In this type of evolutionary scenario, small groups of organisms of the same species are effectively acting as single (perhaps colonial) organisms. It is the reproductive success of the grou...
medmcqa
medmcqa_05_02694
Maximum density of microfilariasis in blood is repoed to be between -
[ "9 pm to 11 pm", "10 pm to 2 am", "8 pm to 10 pm", "2 am to 5 am" ]
B
<p> Filariasis:- Causative agent- W.bancrofti, B.malayi and B.timori. Man is definitive host. Mosquito is the intermediate host. Infective stage- microfilaria. The maximum density of microfilaria in blood is repoed between 10 pm-2am. Treatment- DEC. Filarial control in community. {Reference: park&;s textbook of prevent...
sciq
sciq_01_05880
Desert plants have special stems and leaves to conserve what?
[ "food", "habitat", "air", "water" ]
D
Each organism has the ability to survive in a specific environment. Dry desert environments are difficult to live in. Desert plants have special stems and leaves to conserve water. Animals have other ways to live in the desert. The Namib Desert receives only 1.5 inches of rainfall each year. The Namib Desert beetle liv...
sciq
sciq_01_01978
What do you call any process in which excess water or wastes are removed from the body?
[ "depletion", "excretion", "diffusion", "digestion" ]
B
Excretion is any process in which excess water or wastes are removed from the body. Excretion is the job of the excretory system. Organs of excretion include the large intestine, liver, skin, lungs, and kidneys.
sciq
sciq_01_03689
What blood protein carries oxygen from the lungs to cells throughout the body?
[ "plasma", "dopamine", "hemoglobin", "platelets" ]
C
The blood protein hemoglobin binds with oxygen and carries it from the lungs to cells throughout the body. Heme is a small molecule containing iron that is part of the larger hemoglobin molecule. Oxygen binds to the iron in heme.
sciq
sciq_01_04111
All prokaryotic and some eukaryotic organisms reproduce through what method, where a parent passes all of its genetic material to the next generation?
[ "microscopic reproduction", "sexual reproduction", "asexual reproduction", "organic reproduction" ]
C
Are there male and female bacteria? How could you tell? Remember, bacteria have just one chromosome; they do not have an X or Y chromosome. So they probably have a very simplified form of reproduction. Asexual reproduction, the simplest and most primitive method of reproduction, involves a single parent and produces a ...
sciq
sciq_01_04275
What structures on the gastrodermal cells keep the contents of the gastrovascular cavity agitated and help distribute nutrients?
[ "sporangia", "flagella", "telomeres", "nucleus" ]
B
ARC-Easy
arc_04_01129
Turning off the light when leaving a room is an example of
[ "conserving energy.", "wasting energy.", "using potential energy.", "using chemical energy." ]
A
null
sciq
sciq_01_08635
Caves form over time when what causes rocks like limestone to dissolve?
[ "weather", "air", "water", "acid" ]
C
It can be really exciting to explore a big underground cave like the one in this picture. Do you know how caves form? Believe it or not, water is the answer. Water slowly dissolves rocks, especially certain types of rocks such as limestone. How does something as mild and harmless as water cause hard rocks to dissolve? ...
sciq
sciq_01_08951
What is the molecular formula of carbon dioxide?
[ "co 2", "cl2", "c2o", "h2o" ]
A
The molecular formula of carbon dioxide is CO 2 . One molecule of carbon dioxide consists of 1 atom of carbon and 2 atoms of oxygen. We can calculate the molar mass of carbon dioxide by adding together the molar masses of each atom present in the compound.
math_qa
mathqa_03_00461
the number 523 fbc is divisible by 7 , 89 . then what is the value of f * b * c
[ "504", "532", "210", "180" ]
D
lcm of 7 , 8 and 9 is 504 , thus 523 fbc must be divisible by 504 . 523 fbc = 523000 + fbc 523000 divided by 504 gives a remainder of 352 . hence , 352 + fbc = k * 504 . k = 1 fbc = 152 - - > f * b * c = 10 k = 2 fbc = 656 - - > f * b * c = 180 as fbc is three digit number k can not be more than 2 . two answers ? well ...
openbookqa
obqa_02_03152
The running and moving liquid fluid during a storm causes what
[ "insects", "weather damage", "abrasion", "lava" ]
B
erosion of soil has a negative impact on the environment
ARC-Easy
arc_04_01953
Selective breeding has resulted in plants that are resistant to pests and produce a higher yield of fruits and vegetables. Which of these is the most likely disadvantage that can result from this process?
[ "decreased genetic diversity", "habitat destruction", "overpopulation", "increased erosion" ]
A
null
openbookqa
obqa_02_00362
An example of conservation is avoiding
[ "oil", "sunlight", "fats", "tea" ]
A
An example of conservation is not using fossil fuel
sciq
sciq_01_00397
What process refers to a separation of charge within an atom or molecule?
[ "polarization", "diffusion", "rotation", "convection" ]
A
material, and is intimately related to the polarizability of the material. Things Great and Small The Submicroscopic Origin of Polarization Polarization is a separation of charge within an atom or molecule. As has been noted, the planetary model of the atom pictures it as having a positive nucleus orbited by negative e...
medmcqa
medmcqa_05_00724
Discoloration after death is first seen in -
[ "Dependent pas", "Scalp", "Face", "Arms" ]
A
Ans. is 'a' i.e., Dependent pas It is seen on dependent pas of the body, therefore site depends upon position of body after death :In supine : On posterior dependent poion of body. But not seen on back of shoulder blades, buttocks and back of calves due to contact flattening, i.e.toneless capillaries are compressed and...
medmcqa
medmcqa_05_01216
Osmotic pressure of 1 mol of ideal solute relative to pure water is:
[ "2.5 atm", "5.2 atm", "22.4 atm", "15.2 atm" ]
C
1 mol of an ideal solute dissolved in 1000g of water (a 1m or molal solution) at 1 atm pressure yield a solution whose osmotic pressure relative to pure water is 22.4atm (250C). Ref: Principles of Medical Physiology by Sabyasachi Sircar, 2008/2-22
openbookqa
obqa_02_00777
Conservation is
[ "using Styrofoam plates for every meal", "reusing gift bags again and again", "throwing plastic bottles in the landfill", "driving a gas guzzling truck" ]
B
An example of conservation is avoiding waste
sciq
sciq_01_05739
What system carries nerve impulses to internal organs, controlling activities that are not under your control, such as sweating and digesting food?
[ "hormonal nervous system", "circulatory nervous system", "limbic nervous system", "autonomic nervous system" ]
D
The autonomic nervous system carries nerve impulses to internal organs. It controls activities that are not under your control, such as sweating and digesting food. The autonomic nervous system has two parts:.
ARC-Easy
arc_04_00022
Peach trees have sweet-smelling blossoms and produce rich fruit. What is the main purpose of the flowers of a peach tree?
[ "to attract bees for pollination", "to create flower arrangements", "to protect the tree from disease", "to feed migratory birds" ]
A
null
sciq
sciq_01_02067
What type of animal that eats only or mainly insects?
[ "herbivores", "anaerobic", "heterotrophic", "invertebrates" ]
C
heterotrophic animal that eats only or mainly insects.
math_qa
mathqa_03_02214
a 1200 m long train crosses a tree in 120 sec , how much time will i take to pass a platform 500 m long ?
[ "266 sec", "170 sec", "776 sec", "166 sec" ]
B
"l = s * t s = 1200 / 120 s = 10 m / sec . total length ( d ) = 1700 m t = d / s t = 1700 / 10 t = 170 sec answer : b"
ARC-Challenge
arc_04_02351
Which unit is used to record distances between stars?
[ "miles", "kilometers", "light years", "astronomical units" ]
C
null
openbookqa
obqa_02_02730
What do plants do after they use their chlorophyll to make energy from sunlight?
[ "use it right away", "sell it to someone", "save it for future use", "give it to a friend" ]
C
usually plants store the food they produce for future use
medmcqa
medmcqa_05_03986
Von Willebrand factor is produced by
[ "Liver", "Platelets", "Lungs", "Spleen" ]
B
Von Willebrand factor is produced by platelets and endothelial cells Ref: Ganong 25th ed/page 565
sciq
sciq_01_11145
Like acetic acid, pentanoic acid is what kind of acid?
[ "amino", "carboxylic", "carbonic", "hydroxyl" ]
B
Like acetic acid, pentanoic acid is a carboxylic acid. Unlike acetic acid, however, the alkyl group is rather large, consisting of a 4-carbon chain as in butanol. As with butanol, the nonpolar character of the alkyl group is likely to be as important as the polar character of the carboxylic acid group, making it unlike...
ARC-Easy
arc_04_01282
Several interchangeable parts are used in the manufacture of automobiles. Some examples of these parts are batteries, windshield wiper blades, spark plugs, and tires. Which of the following is an advantage of interchangeable parts over non-interchangeable parts on automobiles?
[ "Interchangeable parts are generally more expensive than custom-made parts for automobiles.", "Interchangeable parts break more often now than in years past on most automobiles.", "Interchangeable parts are plentiful for custom-made automobiles.", "Interchangeable parts can fit many kinds of automobiles." ]
D
null
sciq
sciq_01_05146
What vessels supply blood to the myocardium and other components of the heart?
[ "rapid arteries", "specialized arteries", "surface arteries", "coronary arteries" ]
D
Coronary Arteries Coronary arteries supply blood to the myocardium and other components of the heart. The first portion of the aorta after it arises from the left ventricle gives rise to the coronary arteries. There are three dilations in the wall of the aorta just superior to the aortic semilunar valve. Two of these, ...
sciq
sciq_01_05972
What happens do the sound during a resonance?
[ "amplified, it becomes louder", "it becomes quieter", "it echoes", "it dissipates" ]
A
Most musical instruments use resonance to amplify the sound waves and make the sounds louder. Resonance occurs when an object vibrates in response to sound waves of a certain frequency. In a musical instrument such as a guitar, the whole instrument and the air inside it may vibrate when a single string is plucked. This...