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7.76k
medmcqa
medmcqa_05_03308
'Iris-pearls' are seen in:
[ "Syphilis", "Leprosy", "Sarcoidosis", "Tuberculosis" ]
B
Ans. Leprosy
sciq
sciq_01_03019
Fertilization occurs if a sperm enters the egg while it is passing through what tube?
[ "ovarian", "anterior", "vaginal", "fallopian" ]
D
Fertilization occurs if a sperm enters the egg while it is passing through the fallopian tube. When this happens, the egg finally completes meiosis. This results in two daughter cells that are different in size. The smaller cell is called a polar body . It contains very little cytoplasm. It soon breaks down and disappe...
sciq
sciq_01_10047
What part of the body does emphysema affect?
[ "lungs", "heart", "bones", "brain" ]
A
Emphysema is a lung disease in which walls of the alveoli break down so less gas can be exchanged in the lungs (see Figure below ). This causes shortness of breath. The damage to the alveoli is usually caused by smoking and is irreversible.
ARC-Easy
arc_04_00210
Which statement best identifies a living thing that depends on another living thing to survive?
[ "A wolf drinks water.", "A moose eats a plant.", "A spruce tree grows in soil.", "A salmonberry plant absorbs sunlight." ]
B
null
medmcqa
medmcqa_05_03983
Omenn syndrome is a form of
[ "Squamous cell carcinoma", "Chronic mucocutaneous candidiasis", "IgA deficiency", "Severe combined immunodeficiency" ]
D
Omenn syndrome is an autosomal recessive form of severe combined immunodeficiency (SCID) characterized by erythroderma (skin redness), desquamation (peeling skin), alopecia (hair loss), chronic diarrhoea, failure to thrive, lymphadenopathy (enlarged lymph nodes), eosinophilia, hepatosplenomegaly, and elevated serum IgE...
medmcqa
medmcqa_05_01361
Cerebral malaria is caused by:
[ "Plasmodium ovale", "Plasmodium falciparum", "Plasmodium vivax", "Plasmodium malaria" ]
B
Plasmodium falciparum
math_qa
mathqa_03_04067
the average age of a group of 10 students is 14 years . if 5 more students join the group , the average age rises by 1 year . the average age of the new students is :
[ "22", "38", "11", "17" ]
D
explanation : total age of the 10 students = 10 × 14 = 140 total age of 15 students including the newly joined 5 students = 15 × 15 = 225 total age of the new students = 225 − 140 = 85 average age = 85 / 5 = 17 years answer : d
openbookqa
obqa_02_04018
If rain is something other than clean, then water in that area will
[ "be unsafe", "be great", "be safe", "be clean" ]
A
acid rain has a negative impact on water quality
openbookqa
obqa_02_03243
Kelp has to have provisions to
[ "maintain life", "die", "hibernate", "relocate" ]
A
an plant requires food for survival
ARC-Challenge
arc_04_02712
A single-cell organism can do everything a cell from a multicellular organism can do except
[ "specialize.", "reproduce.", "use energy.", "make protein." ]
A
null
math_qa
mathqa_03_02325
in an examination , 20 % of total students failed in hindi , 70 % failed in english and 10 % in both . the percentage of these who passed in both the subjects is :
[ "10 %", "20 %", "30 %", "40 %" ]
B
"pass percentage = 100 - ( 20 + 70 - 10 ) = 100 - 80 = 20 answer : b"
sciq
sciq_01_09908
Humans have an estimated 20,000 to 22,000 of what units of heredity?
[ "chromosomes", "eggs", "genes", "cells" ]
C
Humans have an estimated 20,000 to 22,000 genes. This may sound like a lot, but it really isn’t. Far simpler species have almost as many genes as humans. However, human cells use splicing and other processes to make multiple proteins from the instructions encoded in a single gene. Of the 3 billion base pairs in the hum...
sciq
sciq_01_02209
What type of gases are the least reactive of all elements?
[ "lucky", "humble", "noble", "brave" ]
C
Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.
sciq
sciq_01_03277
An object undergoing circular motion experiences centripetal what?
[ "acceleration", "vibration", "transmission", "velocity" ]
A
Linear or tangential acceleration refers to changes in the magnitude of velocity but not its direction. We know from Uniform Circular Motion and Gravitation that in circular motion centripetal acceleration, a c , refers to changes in the direction of the velocity but not its magnitude. An object undergoing circular mot...
sciq
sciq_01_09250
Deep within the earth what force is so great that a rock behaves like a stretched rubber band?
[ "pressure", "volcanoes", "momentum", "magnetism" ]
A
The amount of stress on a rock may be greater than the rock’s strength. In that case, the rock will undergo strain or deformation ( Figure below ). Deep within the Earth, the pressure is very great. A rock behaves like a stretched rubber band. When the stress stops, the rock goes back to its original shape. If more str...
openbookqa
obqa_02_02449
Two bears, one weighing 200 pounds and another weighing 150 pounds are about to enter winter. The bear with the most weight will be
[ "better able to fly", "more likely to starve", "better suited to survive", "more likely to hurt" ]
C
fat is used to keep animals warm
medmcqa
medmcqa_05_02476
The production of cervical mucus is stimulated by
[ "Progesterone", "Pregnenolone", "Estriol", "Estradiol" ]
D
Cervical mucus is a glycoprotein gel that expand and contract in response to cyclic changes in the steroid hormone environment across the menstrual cycle to facilitate or inhibit the passage of sperm Estrogen stimulates cervical mucus production, and as levels rise during the follicular phase, mucus becomes more abund...
sciq
sciq_01_06755
What does the secretion of the hormone cholecystokinin stimulate the release of?
[ "pancreatic juices, bile", "sweat, saliva", "urea", "insulin and pepsin" ]
A
Secretion of the hormone cholecystokinin, which stimulates release of pancreatic juices and bile.
math_qa
mathqa_03_00462
the youngest of 4 children has siblings who are 2 , 7 , and 11 years older than she is . if the average ( arithmetic mean ) age of the 4 siblings is 25 , what is the age of the youngest sibling ?
[ "17", "18", "19", "20" ]
D
"x + ( x + 2 ) + ( x + 7 ) + ( x + 11 ) = 100 4 x + 20 = 100 4 x = 80 x = 20 the answer is d ."
medmcqa
medmcqa_05_01908
A 6 yr old child has history of Birth Asphyxia does not communicate well, has slow mental and physcial growth, does not mix with people, has limited interests, gets widely agitated if disturbed, diagnosis is :
[ "Hyperkinetic child", "Autistic Disorder", "Attention deficit disorder", "Schizophrenia" ]
B
Ans. is 'b' Autistic Disorder Symptoms of the child and H/o Birth Asphyxia strongly suggests the diagnosis of Autistic Disorder.Birth Asphyxia is a common came of this disorderAutistic Disorder1. Impairment in social and interpersonal interactions.2. Impairment in language and nonverbal communication3. Mental retardati...
medmcqa
medmcqa_05_02749
Which of the following viruses possesses DNA, a capsid with icosahedral symmetry and no lipid envelope -a) Herpesvirusb) Adenovirusc) Poxvirusd) Papovavirus
[ "c", "bd", "ab", "ac" ]
B
All nonenveloped viruses (whether DNA or RNA) have icosahedral symmetry. Nonenveloped DNA viruses → PAP - PApova, Adeno, PArvo Nonenveloped RNA viruses —› PCR - Picorna, Calci, Reo. Also know All DNA viruses (whether enveloped or nonenveloped) have icosahedral symmetry except poxvirus which has complex symmetry. No D...
ARC-Easy
arc_04_02000
Which of these mixtures would be easiest to separate?
[ "Fruit salad", "Powdered lemonade", "Hot chocolate", "Instant pudding" ]
A
null
sciq
sciq_01_01939
The term science comes from a latin word that means?
[ "having information", "only knowledge", "having knowledge", "were knowledge" ]
C
Understanding the "hows" and "whys" of the world is the goal of science. The term science comes from a Latin word that means "having knowledge. " But science is as much about adding to knowledge as it is about having knowledge. Science is a way of thinking as well as a set of facts. Science can be defined as a way of l...
openbookqa
obqa_02_02840
Animals eat food for the taste but also because without it, they would
[ "Smile", "TV", "Shoes", "expire" ]
D
an animal needs to eat food for nutrients
medmcqa
medmcqa_05_02985
Components of chromosome are:
[ "DNA", "tRNA", "m RNA", "r RNA" ]
A
A i.e. DNA
sciq
sciq_01_09119
Zoonotic pathogens are transferred from what to what?
[ "humans to animals", "animals to humans", "humans to humans", "animals to animals" ]
B
openbookqa
obqa_02_04932
What primarily drives the hydrologic cycle to produce clouds?
[ "a stalking butler who upon the finger rests", "how soiled the clothing is", "energy from a gun", "energy from a central star" ]
D
water absorbs solar energy in the water cycle
openbookqa
obqa_02_03373
If too many humans move into to an given area they may take more resources then possible to sustain themselves, which is what concept?
[ "illness from malnutrition", "reproduction going over", "population just right", "death" ]
B
as available resources increases , the population of an organism that uses those resources will increase
medmcqa
medmcqa_05_00915
Which of the following is the most common cause of vocal cord palsy?
[ "Trauma", "Malignancy", "Inflammatory", "Surgical" ]
D
Surgical trauma is the most common cause of vocal cord palsy. Vocal cord paralysis is most commonly iatrogenic in nature following surgery to thyroid, parathyroid, carotid or cardiothoracic structures. Vocal cord palsy can be attributed to the following causes: Surgical trauma (44%)deg Malignancy (17%)deg: Bronchial>Es...
sciq
sciq_01_11490
What is reduced and forms part of the gelatinous disks sandwiched between the vertebrae in humans?
[ "the sacrum", "the notochord", "the clavicle", "the pelvis" ]
B
sciq
sciq_01_11224
What is approximately the average stroke volume in humans?
[ "75 ml", "80 ml", "70 ml", "65 ml" ]
C
openbookqa
obqa_02_01291
What contains nutrients for plants?
[ "dirt cheap", "wind", "ground minerals", "soiled clothes" ]
C
soil contains nutrients for plants
math_qa
mathqa_03_02587
a no . when divided by 222 gives a remainder 43 , what remainder will beobtained by dividingthe same no . 17 ?
[ "2", "7", "9", "10" ]
D
"222 + 43 = 265 / 17 = 10 ( remainder ) d"
ARC-Easy
arc_04_02033
The moon goes through phases as it revolves around Earth. During which phase of the moon would it be possible for a solar eclipse to occur?
[ "new moon", "full moon", "waning", "waxing" ]
A
null
ARC-Easy
arc_04_01886
If left in the sunshine, water in an open jar will
[ "evaporate.", "condense.", "freeze.", "melt." ]
A
null
sciq
sciq_01_03278
What rocks are formed by crystallization of chemical precipitates?
[ "chemical sedimentary", "layered", "volcanic", "carbon sedimentary" ]
A
Sedimentary rocks formed by the crystallization of chemical precipitates are called chemical sedimentary rocks . Dissolved ions in fluids precipitate out of the fluid and settle out, just like the halite pictured below ( Figure below ).
medmcqa
medmcqa_05_02614
Dialysis is not indicated in toxicity of
[ "Lithium", "Methanol", "Salicylates", "Digitalis" ]
D
Refer kDT 6/e p 499 Indications for Dialysis: A Mnemonic And Explanation Severe fluid overload. Refractory hypeension. Uncontrollable hyperkalemia. Nausea, vomiting, poor appetite, gastritis with hemorrhage. Lethargy, malaise, somnolence, stupor, coma, delirium, asterixis, tremor, seizures, Pericarditis (risk of hemorr...
math_qa
mathqa_03_03005
at the end of the month , a certain ocean desalination plant ’ s reservoir contained 40 million gallons of water . this amount is one fifth of the normal level . if this amount represents 80 % of the reservoir ’ s total capacity , how many million gallons short of total capacity is the normal level ?
[ "20", "30", "40", "50" ]
C
"the q talks of total capacity , normal level , present level , shortage etc . . so it is all about not going wrong in these terms 40 mg = 80 % of total . . total = 40 / . 8 = 50 mg . . normal level = 1 / 5 of 50 = 10 mg . . shortage of normal level = 50 - 10 = 40 mg . . c"
sciq
sciq_01_00200
What substances, which are distinct from acids and bases, form when ions form ionic bonds?
[ "oils", "vitamins", "water molecules", "salts" ]
D
Salts Recall that salts are formed when ions form ionic bonds. In these reactions, one atom gives up one or more electrons, and thus becomes positively charged, whereas the other accepts one or more electrons and becomes negatively charged. You can now define a salt as a substance that, when dissolved in water, dissoci...
sciq
sciq_01_00669
The science of analyzing tree rings is called what?
[ "algorithms", "dendrochronology", "conservation", "estradiol" ]
B
openbookqa
obqa_02_02049
A skunk produces a bad what?
[ "food", "reek", "computer", "title" ]
B
a skunk produces a bad odor
sciq
sciq_01_05987
Because conditions are not ideal, most populations grow ____________.
[ "mathematically", "historically", "SOCIALLY", "logistically" ]
D
Most populations do not live under ideal conditions and grow logistically instead.
ARC-Challenge
arc_04_02450
Ptolemy was an ancient astronomer who thought Earth was the center of the universe. When he made observations that were inconsistent with this, he proposed a phenomenon called "epicycles" to explain the observations. How was Ptolemy's process similar to the modern scientific process?
[ "Ptolemy based his model partly on a belief system.", "Observations inspired Ptolemy to modify his explanations.", "Ptolemy tried to describe the universe instead of explaining it.", "Experiments were the basis of Ptolemy's model of the universe." ]
B
null
sciq
sciq_01_00978
What reflex is commonly tested in newborn infants to establish the presence of neuromuscular function?
[ "plantar", "renal", "glandular", "phalanges" ]
A
Approximate colors are shown, along with pKin values and the pH range over which the color changes. It is important to be aware that an indicator does not change color abruptly at a particular pH value; instead, it actually undergoes a pH titration just like any other acid or base. As the concentration of HIn decreases...
openbookqa
obqa_02_00139
The lights were turned off in a room, who could find the light switch?
[ "Mice", "Elephants", "Raccoons", "Hamsters" ]
C
raccoons eat waste
sciq
sciq_01_05107
What kind of rocks form as an existing rock is altered by high temperature or pressure?
[ "basaltic", "igneous", "sedimentary", "metamorphic" ]
D
Metamorphic rocks form as an existing rock is altered by high temperature or pressure.
ARC-Easy
arc_04_01499
A manufacturing industry has asked to relocate its plant to your town. From an environmental perspective, which question is least important to ask before deciding whether the industry may move to your town?
[ "How will the plant affect wildlife of the area?", "What kinds of pollution will the plant produce?", "What impact will the plant have on the population of the town?", "What are the uses of the products that the plant will manufacture?" ]
D
null
sciq
sciq_01_09922
What do you call a mirror shaped like the inside of a bowl?
[ "circular", "concave", "curved", "convex" ]
B
A concave mirror is shaped like the inside of a bowl. The type of image it forms depends on where the object is relative to the focal point. The image may be real, upside down, and reduced in size; or it may be virtual, right-side up, and enlarged.
math_qa
mathqa_03_02127
how many shots of 1 cm radius can be prepared from a sphere of 4 cm radius ?
[ "33", "88", "27", "64" ]
D
"4 / 3 ï € * 4 * 4 * 4 = 4 / 3 ï € * 1 * 1 * 1 * x x = 64 answer : d"
ARC-Easy
arc_04_00217
An example of a renewable resource is
[ "oil.", "coal.", "wood.", "natural gas." ]
C
null
math_qa
mathqa_03_03106
how many multiples of 5 are there between 0 and 358 ?
[ "54", "75", "76", "71" ]
D
"5 * 1 = 5 5 * 71 = 355 total number of multiples = ( 71 + 1 ) = 72 answer d"
sciq
sciq_01_08830
Electric current is measured in coulombs per second, also called what?
[ "watts", "amperes", "joules", "voltages" ]
B
Electric current is measured in coulombs per second, or amperes.
sciq
sciq_01_00146
Inserting copies of normal genes into a patient with defective genes is known as?
[ "chromosome treatment", "gene therapy", "cloning", "pattern therapy" ]
B
treat genetic disorders. For example, copies of a normal gene might be inserted into a patient with a defective gene. This is called gene therapy . Ideally, it can cure a genetic disorder.
sciq
sciq_01_06216
What type of contamination causes almost 90% of diarrheal disease worldwide?
[ "air contamination", "water supply contamination", "ground contamination", "food contamination" ]
B
Unsafe water supplies have drastic effects on human health. Waterborne diseases are diseases due to microscopic pathogens in fresh water. These diseases can be caused by protozoa, viruses, bacteria, and intestinal parasites. In many parts of the world there are no water treatment plants. If sewage or animal manure gets...
math_qa
mathqa_03_02308
a man buys an article for $ 100 . and sells it for $ 110 . find the gain percent ?
[ "10 %", "15 %", "25 %", "20 %" ]
A
"c . p . = $ 100 s . p . = $ 110 gain = $ 10 gain % = 10 / 100 * 100 = 10 % answer is a"
sciq
sciq_01_02926
What kinds of rocks can change and become new types of rocks?
[ "any types of rocks", "sedimentary rocks", "igneous rocks", "metamorphic rocks" ]
A
Any type of rock can change and become a new type of rock. Magma can cool and crystallize. Existing rocks can be weathered and eroded to form sediments. Rock can change by heat or pressure deep in Earth's crust. There are three main processes that can change rock:.
sciq
sciq_01_03465
What are the three ways to classify matter based on how light interacts with it?
[ "opaque, invisible, visible", "transparent, opaque, translucent", "transitive, opaque, translucent", "extensive , opaque , translucent" ]
B
Light may interact with matter in several ways, including reflection, refraction, transmission, and absorption. Matter can be classified on the basis of how light interacts with it as transparent, translucent, or opaque.
sciq
sciq_01_09740
What is the the basic si unit for mass?
[ "kilogram (kg)", "volume", "pound", "density" ]
A
Mass measures the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg).
sciq
sciq_01_02326
The site of some nutrient absorption, the ileum is the third part of what digestive organ?
[ "large intestine", "rectum", "stomach", "small intestine" ]
D
The ileum is the third part of the small intestine. A few remaining nutrients are absorbed here. Like the jejunum, the inner surface of the ileum is covered with villi that increase the surface area for absorption.
math_qa
mathqa_03_02809
a car traveling at a certain constant speed takes 10 seconds longer to travel 1 km than it would take to travel 1 km at 80 km / hour . at what speed , in km / hr , is the car traveling ?
[ "70", "72", "74", "65" ]
D
time to cover 1 kilometer at 80 kilometers per hour is 1 / 80 hours = 3,600 / 80 seconds = 45 seconds ; time to cover 1 kilometer at regular speed is 45 + 10 = 55 seconds = 55 / 3,600 hours = 1 / 65 hours ; so , we get that to cover 1 kilometer 1 / 65 hours is needed - - > regular speed 65 kilometers per hour ( rate is...
medmcqa
medmcqa_05_01236
Trichophyton species which is zoophilic -
[ "T. tonsurans", "T. violaceum", "T. schoenleinii", "T. mentagrophytes" ]
D
Zoophilic dermatophytes are the species which primarily infect animals and occasionally transmitted to humans. Zoophilic species of Trichophyton are T. mentagrophytes and T. verrucosum. Other zoophilic species of dermatophytes is M. canis.
sciq
sciq_01_11390
A reference point is used in measurement to make what?
[ "regression", "deviation", "focal point", "estimation" ]
D
Estimation, as used in measurement, is the process of referencing a physical quantity in terms of a calibration or reference point. All measurement devices have reference marks of some kind.
openbookqa
obqa_02_00945
when light hits a reflective object , that light
[ "never reaches it", "illuminates the backside", "goes above it", "redirected from it" ]
D
when light hits a reflective object , that light bounces off that object
math_qa
mathqa_03_02225
the speed at which a woman can row a boat in still water is 30 kmph . if he rows downstream , where the speed of current is 6 kmph , what time will he take to cover 100 metres ?
[ "8", "9", "10", "11" ]
C
"speed of the boat downstream = 30 + 6 = 36 kmph = 36 * 5 / 18 = 10 m / s hence time taken to cover 100 m = 100 / 10 = 10 seconds . answer : c"
sciq
sciq_01_04578
What is the magnetic field traditionally referred to as?
[ "charged field", "bfield", "m-field", "spicule" ]
B
22.3 Magnetic Fields and Magnetic Field Lines Einstein is said to have been fascinated by a compass as a child, perhaps musing on how the needle felt a force without direct physical contact. His ability to think deeply and clearly about action at a distance, particularly for gravitational, electric, and magnetic forces...
sciq
sciq_01_07873
Polygenic traits result in a distribution that resembles a curve. what is the shape of the curve?
[ "W-shaped", "egg-shaped", "J-shaped", "bell-shaped" ]
D
David Remahl. Polygenic traits result in a distribution that resembles a bell-shaped curve . The creator of this work allows anyone to use it for any purpose including unrestricted redistribution, commercial use, and modification.
math_qa
mathqa_03_03451
3 years ago , the ratio of ages of p and q was 4 : 3 . 6 years from now , the ratio of their ages will be 7 : 6 . what is p ' s age at present ?
[ "9", "12", "15", "18" ]
C
3 ( p - 3 ) / 4 = ( q - 3 ) . then q = 3 ( p - 3 ) / 4 + 3 6 ( p + 6 ) / 7 = q + 6 6 ( p + 6 ) / 7 = 3 ( p - 3 ) / 4 + 9 24 p + 144 = 21 p + 189 3 p = 45 p = 15 the answer is c .
sciq
sciq_01_02737
Which virus causes cold sores?
[ "flu virus", "microbes virus", "herpes virus", "stilts virus" ]
C
Cold sores are caused by a herpes virus.
medmcqa
medmcqa_05_04814
Height of children in 2-10 years of age is increased by-
[ "2 cm/year", "4 cm/year", "6 cm/year", "10 cm / year" ]
C
Ans. is 'c' i.e., 6 cm/year "After 4 years, the child gains about 5 cm in height every year, until the age of 10 years" -- O.P. Ghai. "An average child gains approximately 7-8 cm in height between the age of 2-6 years and 6-7 cm in height between 6-12 years". -- Nelson Amongst given option, 6 cm/year is the best answer...
medmcqa
medmcqa_05_03893
Cause of nephrocalcinosis in granulomatous ds -
[ "Increased absorption", "Increased conversion to 1,25 OH", "Dystrophic calcification", "Mutation in calcium sensing receptor" ]
B
<p>In patients with sarcoidosis and other granulomatous diseases, such as tuberculosis and fungal infections, excess 1,25(OH) 2 D is synthesized in macrophages or other cells in the granulomas.Indeed, increased 1,25(OH) 2 D levels have been repoed in anephric patients with sarcoidosis and hypercalcemia. Macrophages obt...
math_qa
mathqa_03_00087
a sum of money at simple interest amount to rs 720 after 2 years and to rs 1020 after a further period of 5 years . the sum is :
[ "600", "450", "650", "500" ]
A
simple interest for 5 year = rs . ( 1020 - 720 ) = rs . 300 . simple interest for 2 year = rs . ( 300 / 5 × 2 ) = rs . 120 . principal = rs . ( 720 - 120 ) = rs . 600 . answer : a
openbookqa
obqa_02_03024
Toy submarines bob up and down when put in a bowl of
[ "rice", "vinegar", "ice", "sand" ]
B
baking soda can react chemically with vinegar
sciq
sciq_01_10121
What layer of earth contains abundant oxygen, which can combine with other elements to create oxide minerals?
[ "the surface", "the core", "the tectonic plates", "the crust" ]
D
Earth’s crust contains a lot of oxygen. The oxygen can combine with other elements to create oxide minerals. Oxides contain one or two metal elements combined with oxygen. Oxides are different from silicates, because they do not contain silicon. Many important metals are found as oxides. For example, hematite and magne...
sciq
sciq_01_00017
What occurs when the immune system attacks a harmless substance that enters the body from the outside?
[ "nausea", "panic attack", "allergy", "plague" ]
C
An allergy occurs when the immune system attacks a harmless substance that enters the body from the outside. A substance that causes an allergy is called an allergen. It is the immune system, not the allergen, that causes the symptoms of an allergy.
sciq
sciq_01_08966
How long are microfilaments?
[ "7 m", "9 nm", "7 nm", "4 nm" ]
C
sciq
sciq_01_00525
In physics, _______ is defined as the average kinetic energy of the particles in an object?
[ "heat", "climate", "temperature", "potential energy" ]
C
No doubt you already have a good idea of what temperature is. You might define it as how hot or cold something feels. In physics, temperature is defined as the average kinetic energy of the particles in an object. When particles move more quickly, temperature is higher and an object feels warmer. When particles move mo...
medmcqa
medmcqa_05_04031
Malignancy associated hypercalcemia is due to?
[ "Tumor lysis syndrome", "Parathyroid related peptide", "IL-7", "IGF-b" ]
B
Ans. is 'b' i.e., Parathyroid related peptide * Hypercalcemia is the most common paraneoplastic syndrome. Most commonly it is caused by parathyroid hormone-related peptide (PTHRP), followed by TNF-a, IL-1, and TGF. Lymphomas cause hypercalcemia due to secretion of 1, 25 dihydroxy vitamin D (Calcitriol).
ARC-Challenge
arc_04_02383
Two identical plants are planted 3 meters apart. One plant is flowering, but the other is not. A student concludes that the plants are receiving an unequal supply of water. Another possible explanation the other plant is not flowering is that the plants are
[ "too close to one another.", "receiving different amounts of sunlight.", "in soil with high humus content.", "receiving different amounts of carbon dioxide." ]
B
null
sciq
sciq_01_07145
The timing of events in what cycle - which lasts just minutes in fruit fly embryos - is controlled by mechanisms that are both internal and external to the cell?
[ "circadian cycle", "carbon cycle", "cell cycle", "life cycle" ]
C
culture (outside the body under optimal growing conditions), the length of the cycle is about 24 hours. In rapidly dividing human cells with a 24-hour cell cycle, the G1 phase lasts approximately nine hours, the S phase lasts 10 hours, the G2 phase lasts about four and one-half hours, and the M phase lasts approximatel...
openbookqa
obqa_02_01205
An example of a circuit would be
[ "Rock climbing", "running a mile", "dimming a bulb", "swimming a lap" ]
C
when an electrical circuit is working properly , electrical current runs through the wires in that circuit
ARC-Easy
arc_04_00340
The magnitude of the gravitational force between two planets depends on the
[ "speed the planets rotate.", "other nearby planets.", "volume of the planets.", "distance between the planets." ]
D
null
ARC-Easy
arc_04_00167
What tool would be used to examine a fingerprint?
[ "a graduated cylinder", "a hand lens", "a pair of goggles", "a thermometer" ]
B
null
medmcqa
medmcqa_05_01373
Type II hypersensitivity-
[ "Blood transfusion reaction", "Ahus reaction", "Hay Fever", "Glomerulonephritis" ]
A
Ans. is 'a' i.e., Blood transfusion reaction
medmcqa
medmcqa_05_02174
A child presents with ascending flaccid paralysis. There is subsequent respiratory muscle involvement. CSF examination shows albuminocytological dissociation. Treatment of choice is :
[ "Cycloserine", "Oral prednisolone", "I.V. methyl prednisolone", "I.V. immunoglobins" ]
D
Answer is D (I.V. Immunoglobins): The characteristic clinical presentation and CSF finding lead us to the diagnosis of GBS Either high does intravenous immunoglobulins or plasmapharesis can be initiated as they are equally effective. -- Harrison 's Glucocoicoids have not been found to be effective in GBS - Harrisons St...
medmcqa
medmcqa_05_00633
Traction force required for forceps delivery In primigravida is:
[ "15 kg", "18 to 20 kg", "13 kg", "25 kg" ]
B
Functions of forceps Traction force:in primigravidae the traction force required is about 20kg and that in multipara about 13 kg rotation of head:can be acheived by Kielland&;s forceps act as a protective cage for head from the pressure of bih canal as in a premature baby, controlled delivery of the after coming head i...
sciq
sciq_01_07612
What is a pure substance called?
[ "homogeneous matter", "a liquid", "a mixture", "an element" ]
D
A pure substance is called an element . An element is a pure substance because it cannot be separated into any other substances. Currently, 92 different elements are known to exist in nature, although additional elements have been formed in labs. All matter consists of one or more of these elements. Some elements are v...
sciq
sciq_01_00597
Atherosclerosis and coronary heart disease are examples of what type of body system disease?
[ "digestive system", "connective system", "excretory system", "cardiovascular system" ]
D
Diseases of the cardiovascular system are common and may be life threatening. Examples include atherosclerosis and coronary heart disease. A healthy lifestyle can reduce the risk of such diseases developing. This includes avoiding smoking, getting regular physical activity, and maintaining a healthy percent of body fat...
math_qa
mathqa_03_02592
a milk man has 20 liters of milk . if he mixes 25 liters of water , which is freely available , in 20 liters of pure milk . if the cost of pure milk is rs . 18 per liter , then the profit of the milkman , when he sells all the mixture at cost price is :
[ "20 %", "45 %", "33.33 %", "18 %" ]
B
"explanation : when the water is freely available and all the water is sold at the price of the milk , then the water gives the profit on the cost of 20 liters of milk . therefore , profit percentage = 45 % . answer : b"
sciq
sciq_01_09860
Winds are caused by differences in what?
[ "air pressure", "temperature", "water pressure", "elevation" ]
A
sciq
sciq_01_04444
Through a process called electromagnetic induction, generators change what energy form of a spinning turbine to electrical energy?
[ "seismic", "electric", "kinetic", "potential" ]
C
Generators change the kinetic energy of a spinning turbine to electrical energy in a process called electromagnetic induction. You can read about generators and how they work in the chapter "Electromagnetism. ".
sciq
sciq_01_05169
Higher pressures increase the solubility of what?
[ "gases", "molecules", "bases", "fuels" ]
A
Higher pressures increase the solubility of gases. You are probably familiar with this concept as it relates to carbonated beverages. Before opening the container, the inside is pressurized, so a large amount of CO 2 is dissolved in the liquid. After opening, the pressure decreases (to the ambient pressure), so the sol...
medmcqa
medmcqa_05_02674
Anesthetic agent with vasoconstrictor is contraindicated in:
[ "Spinal block", "Regional block", "Epidural block", "Finger block" ]
D
Ans. (d) Finger blockRef: Morgan,clinical anesthesiology 4/e / 34* Vasoconstrictor should not be added for ring block of hand, finger, toes, penis, pinna as all these organs are supplied by end arteries and ischemic damage may occur* Adrenaline is most commonly used vasoconstrictor.* Felypressin is preferred in cardiov...
math_qa
mathqa_03_00643
the volume of a cube is 1000 cc . find its surface .
[ "864", "556", "255", "600" ]
D
"a 3 = 1000 = > a = 10 6 a 2 = 6 * 10 * 10 = 600 answer : d"
medmcqa
medmcqa_05_01675
Mugging is compression of neck by -
[ "Wooden sticks", "Rope", "Forearm", "Hand" ]
C
In Mugging, strangulation is caused by holding the neck of the victim in the bend of the elbow. Pressure is exeed either on front of the larynx or at one or both sides of the neck by the forearm and upper arm. The attack is usually made from behind Ref: The synopsis of forensic medicine & Toxicology pg: 187
sciq
sciq_01_06683
What is the charge on a single electron known as?
[ "basic charge", "elementary charge", "electron charge", "fundamental charge" ]
B
The charge on a single electron is and is known as the elementary charge.
math_qa
mathqa_03_04318
the minute hand of a clock overtakes the hour hand at intervals of 65 minutes of correct time . how much does the clock gain or lose in 12 hours ?
[ "27.273 seconds", "29.273 seconds", "37.273 seconds", "47.273 seconds" ]
A
after 60 minute rotation the minute hand will make an angle of 30 degree with hour hand . after that let the time required to make an overtake is t minute in this time angle covered by minute hand = ( 360 / 60 ) t = 6 t similarly angle covered by hour hand = ( 30 / 60 ) t = t / 2 so for overtake 6 t = 30 + t / 2 or t =...
sciq
sciq_01_06292
Carbon atoms are bonded to as many hydrogen atoms as possible in what type of fatty acids?
[ "super", "oily", "unsaturated", "saturated" ]
D
Saturated fatty acids have only single bonds between carbon atoms. As a result, the carbon atoms are bonded to as many hydrogen atoms as possible. In other words, the carbon atoms are saturated with hydrogens. Saturated fatty acids are found in fats.
sciq
sciq_01_04979
What is the biggest group of animals on the planet?
[ "arthropods", "carnivores", "mammles", "herbivores" ]
A
How often do you think you see an arthropod? Well, have you ever looked up close at an ant? A spider? A fly? A moth? With over a million described species (and many more yet to be described) in the phylum containing arthropods, chances are, you encounter one of these organisms every day, without even leaving your house...
sciq
sciq_01_07444
What are the antibodies an animal produces after exposure to a microbial antigen?
[ "polyclonal", "chimeric", "monoclonal", "isolated" ]
A
math_qa
mathqa_03_02865
600 men have provisions for 20 days . if 200 more men join them , for how many days will the provisions last now ?
[ "15", "11", "10", "8" ]
A
"600 * 20 = 800 * x x = 15 . answer : a"