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openbookqa
obqa_02_03146
If a flashlight is having difficulty working a person should check
[ "the bottom hook", "the energy hole", "the glass window", "the solar flares" ]
B
a flashlight requires a source of electricity to produce light
medmcqa
medmcqa_05_04053
A 65 year old male smoker presents with gross total painless hematuria. Which of the following is the most likely diagnosis?
[ "Cystolithiasis", "Carcinoma prostate", "Carcinoma of urinary bladder", "Benign prostatic hyperplasia" ]
C
Patient in the question is 65 years old and is a smoker, both these factors predispose to the development of bladder carcinoma. And he is presenting with painless hematuria which is by far the most common symptom and indicator of bladder carcinoma until proven otherwise. Ref: Bailey and Love's Sho Practice of Surgery, ...
sciq
sciq_01_00121
What does erosion do to pieces of broken rock?
[ "moves them", "lead them", "Smooth them", "Cancel Them" ]
A
Erosion moves the pieces of broken rock.
math_qa
mathqa_03_00951
in a 500 m race , the ratio of the speeds of two contestants a and b is 3 : 4 . a has a start of 140 m . then , a wins by
[ "60 m", "40 m", "20 m", "10 m" ]
C
"solution to reach the winning post a will have to cover a distance of ( 500 - 140 ) m , i . e , 360 m . while a covers 3 m , b covers 4 m . while a covers 360 m , b covers ( 4 / 3 x 360 ) m = 480 m thus , when a reaches the winning post , b covers 480 m and therefore remains 20 m behind . ∴ a wins by 20 m . answer c"
math_qa
mathqa_03_01618
when a certain tree was first planted , it was 4 feet tall , and the height of the tree increased by a constant amount each year for the next 6 years . at the end of the 6 th year , the tree was 1 / 3 taller than it was at the end of the 4 th year . by how many feet did the height of the tree increase each year ?
[ "3 / 10", "2", "1 / 2", "2 / 3" ]
B
"say , the tree grows by x feet every year . then , 4 + 6 x = ( 1 + 1 / 3 ) ( 4 + 4 x ) or , x = 2 answer b"
sciq
sciq_01_08786
Which is the process through which leaves collect sunlight and make food?
[ "photosynthesis", "compress", "Greenhouse", "richness" ]
A
Leaves are the keys not only to plant life but to virtually all life on land. The primary role of leaves is to collect sunlight and make food by photosynthesis. Leaves vary in size, shape, and how they are arranged on stems. You can see examples of different types of leaves in Figure below .
sciq
sciq_01_04334
Surface tension is responsible for the fact that small insects can do this on water?
[ "swim", "float", "sink", "walk" ]
D
tension causes liquids to form spheres in free fall or zero gravity (see - ball-ch10_s02_f01: the “floating” water isn’t in the shape of a sphere by accident; it is the result of surface tension). Surface tension is also responsible for the fact that small insects can “walk” on water. Because of surface tension, it tak...
sciq
sciq_01_00923
Major exchange pools of carbon include organisms and what else?
[ "the intensity", "the atmosphere", "duration", "location" ]
B
Major exchange pools of carbon include organisms and the atmosphere. Carbon cycles more quickly between these components of the carbon cycle.
medmcqa
medmcqa_05_01585
Medical treatment of unruptured ectopic pregnancy is contraindicated in :
[ "Sac size 3 cm", "HCG level 3000 IU", "Foetal hea activity present", "70 ml blood collection in pelvis" ]
C
Foetal hea activity present
ARC-Easy
arc_04_01854
Which of these organisms has cells with cell walls?
[ "bluebird", "A pine tree", "A ladybug", "A fox squirrel" ]
B
null
sciq
sciq_01_04060
Translation is the process of ordering the amino acids in the assembly of a?
[ "carbohydrate", "vitamin", "lipid", "protein" ]
D
Translation is the process of ordering the amino acids in the assembly of a protein. The word ribosome comes from ribo nucleic acid and the Greek soma (meaning body). Two Nobel Prizes have been awarded for work relating to the ribosome. The 1974 Nobel Prize in Physiology or Medicine was awarded to Albert Claude, Christ...
openbookqa
obqa_02_04217
Which animal is warm blooded?
[ "salamander", "toad", "parakeet", "tadpole" ]
C
an amphibian is cold-blooded
medmcqa
medmcqa_05_01880
Necrosis and degeneration in short time is seen with
[ "Avulsion", "Lateral Luxation", "Intrusion", "Extrusion" ]
A
Necrosis is seen in almost 100 % cases of the avulsion. Ref: Cohen pathways of pulp, 11th edition
math_qa
mathqa_03_03790
20 beavers , working together in a constant pace , can build a dam in 3 hours . how many b hours will it take 12 beavers that work at the same pace , to build the same dam ?
[ "2 .", "4 .", "b = 5 .", "b = 6 ." ]
C
"c . 5 hrs if there were 10 beavers it could have taken double b = 6 hrs . . so closest to that option is 5 . c"
medmcqa
medmcqa_05_04349
16F Foley's color:
[ "Orange", "Yellow", "Blue", "Black" ]
A
Ans. A. OrangeColor Code of Foley's CatherSizeColorSizeColor6FLight green20FYellow8FLight blue22FViolet10FBlack24FBlue12FWhite26FCream14FGreen28FOlive green16FOrange30FGrey18FRed32FBrown
medmcqa
medmcqa_05_04440
Pupil dilatation is seen in poisoning with
[ "Dhatura", "Ethyl alcohol", "Barium carbonate", "Barbiturates" ]
A
Miosis: Opium, Morphine, Organophosphorus, Barbiturates Mydriasis: Alcohol, Datura, Carbon monoxide, Cocaine Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, section 2-Toxicology .
medmcqa
medmcqa_05_04758
A 23 years old asymptomatic female has MCV-70fl, ferritin - 100g/L, Hb-10gm%. Which of the following is the most likely cause?
[ "B12 deficiency", "Iron deficiency", "Folate deficiency", "Thalassemia trait" ]
D
This patient presenting with mild degree of microcytic anemia (MCV=70) with normal ferritin levels (100pg/L) suggesting a diagnosis of thalassemia trait. Patients with beta thalassemia trait often presents as mild microcytic hypochromic anemia with target cells. Their mean corpuscular volume is rarely >75 fL and the he...
sciq
sciq_01_02284
What kind of a relationship do plants and soil have?
[ "two-way relationship", "dimorphic relationship", "one-way relationship", "contentious relationship" ]
A
sciq
sciq_01_02821
In many polychaetes, the parapodia are richly supplied with blood vessels and also function as what?
[ "tails", "pores", "gills", "scales" ]
C
openbookqa
obqa_02_04417
objects made of what cause refraction of light?
[ "wind", "wood", "melted sand", "soil" ]
C
objects made of glass cause refraction of light
sciq
sciq_01_03194
What living things have cell walls containing cellulose and plastids such as chloroplasts?
[ "plants", "animals", "reptiles", "mammals" ]
A
Plants have eukaryotic cells with large central vacuoles, cell walls containing cellulose, and plastids such as chloroplasts and chromoplasts. Different types of plant cells include parenchymal, collenchymal, and sclerenchymal cells. The three types differ in structure and function.
ARC-Easy
arc_04_01395
What happens to metal railroad tracks during the heat of a summer day?
[ "decrease in weight", "increase in weight", "decrease in length", "increase in length" ]
D
null
medmcqa
medmcqa_05_01325
Latent squint is also known as -
[ "Hyperphoria", "Exophoria", "Heterophoria", "Esopheria" ]
C
Lateral squint is also known as "Heterophoria" It is a condition in which tendency of the eyes to dete is kept latent by fusion. Therefore, when the influence of fusion is removed the visual axis of one eye detes away. Ref : A.K.Khurana; 6th edition;Page no: 344
sciq
sciq_01_03203
What color is the fungus in blue cheese?
[ "purple", "pink", "blue", "green" ]
C
Blue cheese is blue because of the fungus growing throughout it.
ARC-Easy
arc_04_01347
Fossil fuels were formed from
[ "volcanoes", "the remains of living things", "gases in the atmosphere", "water trapped inside rocks" ]
B
null
math_qa
mathqa_03_02836
in what time will a railway train 60 m long moving at the rate of 54 kmph pass a telegraph post on its way ?
[ "4 sec", "7 sec", "2 sec", "6 sec" ]
A
"t = 60 / 54 * 18 / 5 = 4 sec answer : a"
sciq
sciq_01_05245
Like mammals and birds, and unlike other reptiles, crocodiles have how many chambers in their heart?
[ "two", "one", "six", "four" ]
D
Like mammals and birds, and unlike other reptiles, crocodiles have a four-chambered heart. But, unlike mammals, blood with and without oxygen can be mixed.
ARC-Easy
arc_04_00503
Which SI unit would be most appropriate for recording the length of a typical classroom?
[ "gram", "kilogram", "meter", "kilometer" ]
C
null
sciq
sciq_01_04768
What is the most common cause of cancer?
[ "smoking", "technology mutations", "poor diet", "cell mutations" ]
D
Most cancers are caused by mutations. Mutations are random errors in genes. Mutations that lead to cancer usually occur in genes that control the cell cycle. Because of the mutations, abnormal cells are allowed to divide.
sciq
sciq_01_11094
What is the term for rotation of a bone toward the midline of the body?
[ "interior rotation", "medial rotation", "visual rotation", "lateral rotation" ]
B
Rotational Movement Rotational movement is the movement of a bone as it rotates around its longitudinal axis. Rotation can be toward the midline of the body, which is referred to as medial rotation, or away from the midline of the body, which is referred to as lateral rotation. Movement of the head from side to side is...
openbookqa
obqa_02_04615
What do you have the most time to paint a nature scene outside?
[ "Spring", "Summer", "Fall", "Winter" ]
B
the amount of daylight is greatest in the summer
sciq
sciq_01_07468
Muscle contraction requires repeated cycles of binding and what?
[ "lunging", "twisting", "release", "push" ]
C
sciq
sciq_01_01761
What type of tissue makes up much of the inside of a plant?
[ "leaf tissue", "stem tissue", "ground tissue", "working tissue" ]
C
Ground tissue makes up much of the inside of a plant. The cells of ground tissue carry out basic metabolic functions and other biochemical reactions. Ground tissue may also store food or water.
sciq
sciq_01_09542
What class of animals have four limbs and produce amniotic eggs?
[ "amphibians", "reptiles", "insects", "mammals" ]
D
Mammals are a class of endothermic vertebrates. They have four limbs and produce amniotic eggs. The mammal class is defined by the presence of mammary glands and hair (or fur). Other traits of mammals include sweat glands in their skin, alveoli in their lungs, a four-chambered heart, and a brain covering called the neo...
openbookqa
obqa_02_00565
Rainbows need
[ "leprechauns and pots of gold", "rain and dark skies", "sun and some drizzle", "sun and clear skies" ]
C
sunlight and rain can cause a rainbow
sciq
sciq_01_10586
How do plants obtain their energy?
[ "glycolysis", "HETEROTROPHS", "Sugar Transfer", "photosynthesis" ]
D
Seaweed is actually a plant-like protist, which are also known as algae. The green color is due to what pigment? Algae, like plants, obtain their energy through photosynthesis.
ARC-Easy
arc_04_01017
The scientific name for a giraffe is Giraffa camelopardalis. What two levels of classification does this name represent?
[ "family and order", "kingdom and genus", "phylum and domain", "genus and species" ]
D
null
openbookqa
obqa_02_01772
An animal that clucks has
[ "four legs", "fur", "teeth", "wings" ]
D
chickens cluck
sciq
sciq_01_01754
Vertebrates are all chordates that have a what?
[ "fossil", "brain", "circulatory system", "backbone" ]
D
Living species of chordates are classified into three major subphyla: Vertebrata, Urochordata, and Cephalochordata. Vertebrates are all chordates that have a backbone. The other two subphyla are invertebrate chordates that lack a backbone. Members of the subphylum Urochordata are tunicates (also called sea squirts). Me...
sciq
sciq_01_10883
The net effect of aldosterone is to conserve and increase water levels in the plasma by reducing the excretion of what element, and thus water?
[ "potassium", "sodium", "lithium", "oxygen" ]
B
Aldosterone Recall that aldosterone increases the excretion of potassium and the reabsorption of sodium in the distal tubule. Aldosterone is released if blood levels of potassium increase, if blood levels of sodium severely decrease, or if blood pressure decreases. Its net effect is to conserve and increase water level...
sciq
sciq_01_02370
Some of the small moons of saturn are found within what features distinctive to the planet?
[ "rings of saturn", "crest of saturn", "craters of saturn", "interior of saturn" ]
A
As of 2011, over 60 moons have been identified around Saturn. Only seven of Saturn’s moons are round. All but one is smaller than Earth’s Moon. Some of the very small moons are found within the rings. All the particles in the rings are like little moons, because they orbit around Saturn. Someone must decide which ones ...
sciq
sciq_01_06213
Enthalpy is a measure of the total energy of what kind of system?
[ "macroscopic", "thermodynamic", "hypodermic", "planetary" ]
B
Reactions can proceed by themselves if they are exergonic or exothermic, that is if they release energy. The associated free energy of the reaction is composed of two different thermodynamic quantities, enthalpy and entropy. Enthalpy is a measure of the total energy of a thermodynamic system. The change in enthalpy is ...
math_qa
mathqa_03_04132
a metal company ' s old machine makes bolts at a constant rate of 100 bolts per hour . the company ' s new machine makes bolts at a constant rate of 150 bolts per hour . if both machines start at the same time and continue making bolts simultaneously , how many minutes will it take the two machines to make a total of 5...
[ "36", "72", "120", "144" ]
C
"old machine 100 bolts in 60 mins so , 5 / 3 bolts in 1 min new machine 150 bolts in 60 mins so , 5 / 2 bolts in 1 min together , 5 / 3 + 5 / 2 = 25 / 6 bolts in 1 min so , for 500 bolts 500 * 6 / 25 = 120 mins ans c"
math_qa
mathqa_03_01492
what is the ratio of 3 / 7 to the product 2 * ( 7 / 3 ) ?
[ "3 : 7", "9 : 98", "3 : 21", "1 : 7" ]
B
"3 / 7 / 14 / 3 = 9 / 98 . . . imo option b ."
openbookqa
obqa_02_01550
An example of an electrical circuit could be
[ "Dimming the lights", "Driving a car", "Drinking water", "Riding a bike" ]
A
a light bulb converts electrical energy into light energy when it is turned on
medmcqa
medmcqa_05_03395
A 43-year-old man is admitted to the hospital, having suffered a whiplash injury when his compact auto was struck from behind by a sports utility vehicle. MRI examination reveals some herniation of a disk in the cervical region. Physical examination reveals that the patient has lost elbow extension; there is absence of...
[ "C5", "C6", "C7", "C8" ]
C
C7 is the main spinal nerve that contributes to the radial nerve and innervates the triceps. Absence of the triceps reflex is usually indicative of a C7 radiculopathy or injury.
sciq
sciq_01_01888
What type of symmetry do echinoderms show?
[ "lateral", "mirrored", "radial", "parallel" ]
C
As mentioned earlier, echinoderms show radial symmetry. Other key echinoderm features include an internal skeleton and spines, as well as a few organs and organ systems. Although echinoderms look like they have a hard exterior, they do not have an external skeleton. Instead, a thin outer skin covers an internal skeleto...
sciq
sciq_01_01098
What affects how high a cake rises when it bakes?
[ "air currents", "air movement", "current pressure", "air pressure" ]
D
Air pressure affects how high a cake rises when it bakes. Directions for cake mixes often have special high altitude instructions, like those on the label below. Explain why.
medmcqa
medmcqa_05_00380
Prolonged PT and Normal PTT may be seen in:
[ "Thrombocytopenia", "DIC", "Vit. K deficiency", "Aspirin toxicity" ]
C
Ans. (c) Vit. K deficiency(Ref: Robbins 9th/pg 656)Disease/ ConditionBTPTapTTA. Thrombocytopenia|NNB. DIC|||C. Vit. K deficiencyN|| (late)D. Aspirin toxicity|NN
math_qa
mathqa_03_04527
what is the rate percent when the simple interest on rs . 4000 amount to rs . 320 in 2 years ?
[ "4 %", "4.1 %", "4.2 %", "4.3 %" ]
A
"interest for 1 year = 320 / 2 = 160 interest on rs 4000 p / a = 160 interest rate = 160 / 4000 * 100 = 4 % answer : a"
openbookqa
obqa_02_00476
How would a location's climate be determined?
[ "look at the weather many mornings, afternoons, and evenings in different seasons", "look at the the most extreme weather events", "look at the weather at noon only", "look at the weather on one day" ]
A
climate is the usual kind of weather in a location
ARC-Easy
arc_04_01705
Which situation is an example of a feedback system in the body that maintains homeostasis?
[ "a mouse pushing a lever to release food", "a dog going to a food bowl when a bell rings", "students receiving star stickers for good behavior", "the brain signaling blood vessels to return to normal" ]
D
null
sciq
sciq_01_11281
What is the process by which plants make their own food called?
[ "atherosclerosis", "photosynthesis", "fission", "fusion" ]
B
math_qa
mathqa_03_04865
if the sum of two numbers is 60 and the h . c . f and l . c . m of these numbers are 3 and 120 respectively , then the sum of the reciprocal of the numbers is equal to :
[ "2 / 9", "4 / 5", "1 / 6", "6 / 6" ]
C
"let the numbers be a and b . then , a + b = 60 and ab = 3 * 120 = 360 . required sum = 1 / a + 1 / b = ( a + b ) / ab = 60 / 360 = 1 / 6 . answer : c"
sciq
sciq_01_06735
Something supplied by nature that helps support life, including ecosystems as well as minerals and fossil fuels, is called a what?
[ "fluid resource", "natural resource", "visible resource", "artificial resource" ]
B
A natural resource is something supplied by nature that helps support life. When you think of natural resources, you may think of minerals and fossil fuels. However, ecosystems and the services they provide are also natural resources. Biodiversity is a natural resource as well.
math_qa
mathqa_03_01944
one - third of rahul ' s savings in national savings certificate is equal to one - half of his savings in public provident fund . if he has rs . 1 , 50,000 as total savings , how much has he saved in public provident fund ?
[ "30000", "60000", "50000", "90000" ]
B
"let savings in n . s . c and p . p . f . be rs . x and rs . ( 150000 - x ) respectively . then , ( 1 / 3 ) x = ( 1 / 2 ) ( 150000 - x ) ( x / 3 ) + ( x / 2 ) = 75000 5 x / 6 = 75000 x = 75000 x 6 / 5 = 90000 savings in public provident fund = rs . ( 150000 - 90000 ) = rs . 60000 answer is b ."
medmcqa
medmcqa_05_02351
Cereals are rich in which amino acid ?
[ "Lysine", "Threonine", "Tiyptophan", "Methionine" ]
D
Ans. is 'd' i.e., Methionine "Pulses have high lysine content and are deficient in methionine; on the other hand cereals have an abundance of methionine"
sciq
sciq_01_06425
The urethra transports urine from what organ to the outside of the body for disposal?
[ "bladder", "heart", "lungs", "brain" ]
A
Urethra The urethra transports urine from the bladder to the outside of the body for disposal. The urethra is the only urologic organ that shows any significant anatomic difference between males and females; all other urine transport structures are identical (Figure 25.3).
sciq
sciq_01_07954
Pressure is defined as the force per unit area on?
[ "weight", "speed", "surface", "gravity" ]
C
Pressure is defined as the force per unit area on a surface.
math_qa
mathqa_03_03292
worker a takes 8 hours to do a job . worker b takes 6 hours to do the same job . how long it take both a & b , working together but independently , to do the same job ?
[ "20 / 9", "40 / 9", "50 / 9", "24 / 7" ]
D
"one day work of a = 1 / 8 one day work of b = 1 / 6 so one day work of a and b together = 1 / 8 + 1 / 6 = 7 / 24 so total days required = 24 / 7 answer : d"
openbookqa
obqa_02_04104
In order for an animal to need to hibernate, they must be of the species that
[ "is in space", "makes brownies", "nothing", "instinctively does it" ]
D
hibernation is an inherited behavior
sciq
sciq_01_05377
What do optical fibres look like?
[ "flat paper", "big flashlights", "square boxes", "thin glass tubes" ]
D
Besides entertaining a cat, laser light has many other uses. It is used to scan bar codes, for example, and to carry communication signals in optical fibers. Optical fibers are extremely thin glass tubes that are used to guide laser light (see Figure below ). Sounds or pictures are encoded in pulses of laser light, whi...
sciq
sciq_01_05900
When the nucleus divides, the two chromatids that make up each chromosome separate from each other and move to opposite poles of the cell during this process?
[ "mitosis", "cytokinesis", "spawning", "meiosis" ]
A
During mitosis , when the nucleus divides, the two chromatids that make up each chromosome separate from each other and move to opposite poles of the cell. This is shown in Figure below . You can watch an animation of the process at the following link: http://www. biology. arizona. edu/Cell_bio/tutorials/cell_cycle/Mit...
sciq
sciq_01_11398
What is created by the polymerization of glucose?
[ "cellulose", "methane", "carbonate", "glucose" ]
A
Zachary Wilson. Cellulose is created by the polymerization of glucose . CC BY-NC 3.0.
medmcqa
medmcqa_05_02972
Non-essential amino acid :
[ "Tryptophan", "Tyrosine", "Arginine", "Histidine" ]
B
Essential amino acids are those which can't be synthesised in the body and must be taken in the diet. Alanine can be synthesized from pyruvate by transamination in a single step. So, alanine is not a dietarily essential amino acid. Semi-essential amino acids: Those which can be synthesized in body but to some extent.
sciq
sciq_01_05525
In a wheel and axle, when force is applied either to the wheel or axle, what aspect of the force does not change?
[ "shift", "pressure", "direction", "speed" ]
C
In a wheel and axle, force may be applied either to the wheel or to the axle. In both cases, the direction of the force does not change, but the force is either increased or applied over a greater distance.
medmcqa
medmcqa_05_00025
Which one of the circuits does not have valves?
[ "Magills circuit", "Bains circuit", "Closed circuit", "Mapleson E" ]
D
Ayre's T-piece was invented by Phillip Ayer in 1937. This consists of a light metal tube 1 cm in diameter, 5 cm in length with a side arm. Used as such, it functions as a non-rebreathing system. Fresh gas enters the system through the side arm and the expired gas is vented into the atmosphere and there is no rebreathin...
ARC-Easy
arc_04_00487
Which scientist is credited with using a telescope in the seventeenth century to discover the moons of Jupiter?
[ "Galileo", "Kepler", "Einstein", "Newton" ]
A
null
sciq
sciq_01_00214
What is a mass spectrometer used to measure?
[ "optical atomic masses", "relative atomic masses", "subatomic masses", "partial atomic masses" ]
B
Although the masses of the electron, the proton, and the neutron are known to a high degree of precision (Table 1.3 "Properties of Subatomic Particles*"), the mass of any given atom is not simply the sum of the masses of its electrons, protons, and neutrons. For example, the ratio of the masses of 1H (hydrogen) and 2H ...
math_qa
mathqa_03_01159
a train running at the speed of 72 km / hr crosses a pole in 9 seconds . what is the length of the train ?
[ "286", "278", "255", "180" ]
D
"speed = ( 72 * 5 / 18 ) m / sec = ( 20 ) m / sec length of the train = ( speed x time ) = ( 20 * 9 ) m = 180 m . answer : d"
sciq
sciq_01_05166
What type of rain dissolves limestone and marble?
[ "sulfur", "acid", "natural", "carbon" ]
B
Figure below shows some of the damage done by acid rain. Acid rain ends up in soil and bodies of water. This can make them very acidic. The acid strips soil of its nutrients. These changes can kill trees, fish, and other living things. Acid rain also dissolves limestone and marble. This can damage buildings, monuments,...
sciq
sciq_01_04593
The field of organic chemistry studies the structure and reactivity of compounds containing what element?
[ "carbon", "nitrogen", "hydrogen", "oxygen" ]
A
Since then, the distinction between organic and inorganic compounds and reactions has blurred. Currently, the field of organic chemistry studies the structure and reactivity of nearly all carbon-containing compounds. Over twenty million organic compounds are known, ranging from very simple molecules to complex proteins...
openbookqa
obqa_02_03237
If I wanted to add friction to a subject to get it to slow down I could
[ "embrace it", "throw it", "push it", "roll it" ]
A
friction causes the speed of an object to decrease
openbookqa
obqa_02_01470
giant walls of froze H2O carved out
[ "the great plains", "the pacific ocean", "the great lakes", "the grand canyon" ]
C
the Great Lakes were formed by glaciers moving over the ground
sciq
sciq_01_00864
What are created based upon the loss or gain of electrons?
[ "atoms", "hydrogens", "crystals", "ions" ]
D
Christopher Auyeung. Ions are created by the loss or gain of electrons . CC BY-NC 3.0.
sciq
sciq_01_11448
What are the "code words" of the genetic code?
[ "lipids", "polymers", "codons", "nucleotides" ]
C
Reading the Genetic Code. The genetic code is read three bases at a time. Codons are the code words of the genetic code. Which amino acid does codon 2 in the drawing stand for?.
openbookqa
obqa_02_01449
What does an object need to reflect towards the eye to be seen?
[ "lamp glow", "water", "light rain", "wind" ]
A
if an object reflects light toward the eye then that object can be seen
math_qa
mathqa_03_01815
the sum of the first 50 positive even integers is 2550 . what is the sum t of even integers from 102 to 200 inclusive ?
[ "5100", "7550", "10100", "15500" ]
B
"my solution is : first 50 even integers : 2 4 6 8 < . . . > integers from 102 to 200 102 104 106 108 < . . . > we notice that each integer from the second set is 100 more than the respective integer in the first set . since we have 50 even integers from 102 to 200 , then : t = 2550 + ( 100 * 50 ) = 7550 . b"
sciq
sciq_01_07649
Chromosomes consist of what material made up of strings of dna?
[ "mitochondria", "chromatin", "gray matter", "rna" ]
B
8.2 Chromatin Chromosomes consist of chromatin11 . This is made up of strings of DNA, which typically measure centimeters in length if stretched out. This DNA is wound around a histone12 core and organized into nucleosome13 s. The chromatin14 must be uncoiled for gene expression15 and replication16 . Chromosome microgr...
medmcqa
medmcqa_05_03881
Which of the following drugs can cause Torsades'de pointes?
[ "Quinidine", "Lignocaine", "Esmolol", "Flecainide" ]
A
Ans. (A) Quinidine(Ref: Katzung 10th/e p224; KDT 8th/e p574)*Torsades'de pointes is a polymorphic ventricular tachycardia that is usually caused due to blockade of delayed rectifier K+ channels in the heart.*It manifests in the ECG as QTc prolongation.*Drugs having cardiac K+ channel blocking activities can cause this ...
sciq
sciq_01_02502
The elements in group 2 are called what?
[ "alkaline earth metals", "noble gases", "halogens", "metal alloys" ]
A
The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (see Figure below ). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is n s 2 . The alk...
sciq
sciq_01_07314
Which gas is released by the group of archaea known as methanogens?
[ "propane", "methane", "sulfur", "butane" ]
B
Archaea that produce methane are called methanogens.
sciq
sciq_01_06993
What is a series of processes that remove unwanted substances from water called?
[ "water dilution", "water treatment", "water cleaning", "water filtration" ]
B
Water treatment is a series of processes that remove unwanted substances from water. The goal of water treatment is to make the water safe to return to the natural environment or to the human water supply. Treating water for other purposes may not include all the same steps. That’s because water used in agriculture or ...
openbookqa
obqa_02_01353
All living things are made of parts that contain a
[ "blood vessel", "heart", "nucleus", "skeleton" ]
C
a living thing is made of cells
medmcqa
medmcqa_05_02111
Color of postmoem staining: NIMHANS 14
[ "Greenish yellow", "Blackish", "Reddish brown", "Bluish purple" ]
D
Ans. Bluish purple
medmcqa
medmcqa_05_03581
What should be the concentration of hydrogen peroxide when used for home bleach technique?
[ "3 - 7.5%", "7 - 10%", "15 - 25%", "35%" ]
A
Hydrogen peroxide - H2O2 can be used alone or mixed with sodium perborate into a paste for use in the “walking bleach”. H2O2 concentrations ranging from 3 to 7.5% are used for home bleach. Textbook of Endodontics Nisha GARG 3rd ED
math_qa
mathqa_03_03787
two interconnected , circular gears travel at the same circumferential rate . if gear a has a diameter of 20 centimeters and gear b has a diameter of 50 centimeters , what is the ratio of the number of revolutions that gear a makes per minute to the number of revolutions that gear b makes per minute ?
[ "3 : 5", "9 : 25", "5 : 2", "25 : 9" ]
C
"same circumferential rate means that a point on both the gears would take same time to come back to the same position again . hence in other words , time taken by the point to cover the circumference of gear a = time take by point to cover the circumference of gear b time a = 2 * pi * 25 / speed a time b = 2 * pi * 10...
math_qa
mathqa_03_04495
a man saves 20 % of his monthly salary . if an account of dearness of things he is to increase his monthly expenses by 20 % , he is only able to save rs . 230 per month . what is his monthly salary ?
[ "5000", "5750", "2878", "2990" ]
B
"income = rs . 100 expenditure = rs . 80 savings = rs . 20 present expenditure 80 * ( 20 / 100 ) = rs . 96 present savings = 100 â € “ 96 = rs . 4 100 - - - - - - 4 ? - - - - - - - - - 230 = > 5750 answer : b"
sciq
sciq_01_11434
The overall purpose of the light-dependent reactions is to convert light energy into this?
[ "thermal energy", "calories", "photosynthesis", "chemical reactions" ]
D
How Light-Dependent Reactions Work The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins call...
math_qa
mathqa_03_01745
tim came second in math . when his mother asked him how much he had scored , he answered that he got the sum of the first 7 even numbers . his mother immediately worked out the answer . how much had he scored in math ?
[ "80", "90", "56", "70" ]
C
"c 56 sum = ( n x n ) + n hence , 7 x 7 = 49 + 7 = 56"
math_qa
mathqa_03_01322
the cost of a one - family home was $ 120,000 in 1980 . in 1988 , the price had increased to $ 192,000 . what was the percent increase in the cost of the home ?
[ "60 %", "50 %", "55 %", "40 %" ]
A
increase = 192000 - 120000 = 72000 % increase = 72000 * 100 / 120000 = 60 % answer : option a
sciq
sciq_01_01262
In mammals what does the zona pellucida protect?
[ "fetus", "testes", "sperm", "egg" ]
D
Fertilization Fertilization, pictured in Figure 43.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. The egg and sperm each contain one set of chromosomes. To ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. In mammals, the eg...
sciq
sciq_01_03293
What is the best-known geyser in the world that also faithfully erupts every 90 minutes?
[ "old faithful", "devil's tongue", "angel falls", "old guy" ]
A
Old Faithful is the best-known geyser in the world. You can see a picture of it in Figure below . The geyser erupts faithfully every 90 minutes, day after day. During each eruption, it may release as much as 30,000 liters of water!.
openbookqa
obqa_02_03724
Slurping down your urine shows you're
[ "bed-wetting", "recycling", "menstruating", "preserving wetlands" ]
B
An example of conservation is avoiding waste
sciq
sciq_01_05930
What is the common name for a simple harmonic oscillator, which basically consists of a small object suspended on a wire or string?
[ "metronome", "yo-yo", "pendant", "pendulum" ]
D
Pendulums are in common usage. Some have crucial uses, such as in clocks; some are for fun, such as a child’s swing; and some are just there, such as the sinker on a fishing line. For small displacements, a pendulum is a simple harmonic oscillator. A simple pendulum is defined to have an object that has a small mass, a...
openbookqa
obqa_02_04538
Which plant absorbs the most sunlight?
[ "the one that dates grow on", "the one that eats insects", "the one that grows in the tundra", "the one that ladybugs like the best" ]
A
as the size of a leaf increases , the amount of sunlight absorbed by that leaf will increase
openbookqa
obqa_02_03468
You shiver when your body temperature drops, which happens when it is
[ "Pants", "Chilly", "Hot", "Funny" ]
B
cool temperatures cause animals to shiver
ARC-Easy
arc_04_00003
Which of the following is an example of an assistive device?
[ "contact lens", "motorcycle", "raincoat", "coffee pot" ]
A
null
ARC-Challenge
arc_04_02185
Which planet has the longest planetary year?
[ "Earth", "Venus", "Jupiter", "Neptune" ]
D
null
sciq
sciq_01_01818
Oxides of small, highly charged ions of what type tend to be acidic?
[ "steel", "liquid", "plastic", "metal" ]
D
Summary The transition metals are characterized by partially filled d subshells in the free elements and cations. The ns and (n − 1)d subshells have similar energies, so small influences can produce electron configurations that do not conform to the general order in which the subshells are filled. In the secondand thir...