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math_qa
mathqa_03_02414
the present age of a father is 3 years more than 3 times the age of his son . 5 years hence , father ' s age will be 10 years more than twice the age of the son . find the present age of the father .
[ "33", "38", "27", "40" ]
C
if the present age be x years . father ' s will be ( 3 x + 3 ) years . . so , ( 3 x + 3 + 5 ) = 2 ( x + 3 ) + 10 or , x = 8 so the fathers present age = ( 3 x + 3 ) = ( 3 * 8 + 3 ) years = 27 years . . answer : option c
ARC-Challenge
arc_04_02624
The respiratory system cannot deliver oxygen to the cells of the body, nor can it remove carbon dioxide, without which two body systems?
[ "muscular and nervous", "digestive and muscular", "cardiovascular and nervous", "cardiovascular and muscular" ]
D
null
math_qa
mathqa_03_00257
a circle graph shows how the megatech corporation allocates its research and development budget : 14 % microphotonics ; 24 % home electronics ; 20 % food additives ; 29 % genetically modified microorganisms ; 8 % industrial lubricants ; and the remainder for basic astrophysics . if the arc of each sector of the graph i...
[ "8 °", "10 °", "18 °", "36 °" ]
C
"14 % microphotonics ; 24 % home electronics ; 20 % food additives ; 29 % genetically modified microorganisms ; 8 % industrial lubricants ; 100 - ( 14 + 24 + 20 + 29 + 8 ) = 5 % basic astrophysics . 5 % of 360 ° is 18 ° . answer : c ."
sciq
sciq_01_05133
What kind of muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods, allowing the heart to fill with blood for the next cycle?
[ "smooth muscle", "nervous muscle", "cardiac muscle", "skeletal muscle" ]
C
Cardiac muscle undergoes aerobic respiration patterns, primarily metabolizing lipids and carbohydrates. Myoglobin, lipids, and glycogen are all stored within the cytoplasm. Cardiac muscle cells undergo twitch-type contractions with long refractory periods followed by brief relaxation periods. The relaxation is essentia...
sciq
sciq_01_04585
Snails, scallops, and squids are what type of invertebrate?
[ "algae", "mollusk", "crustacean", "arthropod" ]
B
Mollusks are invertebrates such as snails, scallops, and squids. They have a hard outer shell. There is a layer of tissue called the mantle between the shell and the body. Most mollusks have tentacles for feeding and sensing, and many have a muscular foot. Mollusks also have a coelom, a complete digestive system, and s...
sciq
sciq_01_02993
Loss of muscle mass due to breakdown of structural proteins is known as what?
[ "exhaustion", "mutation", "distrophy", "atrophy" ]
D
10.6 Exercise and Muscle Performance Hypertrophy is an increase in muscle mass due to the addition of structural proteins. The opposite of hypertrophy is atrophy, the loss of muscle mass due to the breakdown of structural proteins. Endurance exercise causes an increase in cellular.
ARC-Easy
arc_04_00071
One process in the formation of sedimentary rocks is when rocks are
[ "compressed by moving plates.", "heated and subjected to high pressure.", "broken up and deposited in layers.", "moved up along fault planes." ]
C
null
sciq
sciq_01_09296
What is the process in which a layer of a second metal is deposited on the metal electrode that acts as the cathode during electrolysis?
[ "casting", "cold fusion", "electroplating", "distillation" ]
C
Electroplating In a process called electroplating, a layer of a second metal is deposited on the metal electrode that acts as the cathode during electrolysis. Electroplating is used to enhance the appearance of metal objects and protect them from corrosion. Examples of electroplating include the chromium layer found on...
ARC-Easy
arc_04_01221
During which of the processes below does water vapor change to liquid water?
[ "melting", "freezing", "evaporation", "condensation" ]
D
null
openbookqa
obqa_02_00529
Eagles eat
[ "hawks", "flying insects", "plants and grains", "small burrowing mammals" ]
D
eagles eat rabbits
sciq
sciq_01_03053
Air is said to reach what point, a term used by meteorologists, when humidity increases or temperature decreases?
[ "bubble point", "its dew point", "its dip point", "freezing point" ]
B
Air reaches its dew point when humidity increases or temperature decreases.
sciq
sciq_01_04178
At what point is water on the ph scale?
[ "14, basic", "0, very acidic", "neutrality, 7", "3, acidic" ]
C
The light from a laser is monochromatic, coherent, and very intense.
math_qa
mathqa_03_02704
what is the average ( arithmetic mean ) of the numbers 100 , 150 , 200 , 200 , 250 , and 300 ?
[ "100", "150", "140", "200" ]
D
"{ 100 , 150 , 200 , 200 , 250 , 300 } = { 200 - 100,200 - 50 , 200 , 200,200 + 50,200 + 100 } - - > the average = 200 . answer : d ."
medmcqa
medmcqa_05_02993
Drug of choice for acute iridocyclitis is-
[ "Steroids", "Acetazolamide", "Atropine", "Antibodies" ]
A
Coicosteroids are of great value in controlling the iridocyclitis in the acute phase. They usually administered topically as drops or ointment or subconjunctival injections. eg ;- betamethasone, dexamethasone and prednisolone.
medmcqa
medmcqa_05_00755
Which of the following is the investigation of choice for assessment of depth of penetration and perirectal nodes in rectal cancer -
[ "Trans rectal ultrasound", "CT Scan pelvis", "MRI Scan", "Double contrast Barium enema" ]
C
Ans. is 'c' i.e., M.R.I. Scan
sciq
sciq_01_01216
Name the simple sugar that is a component of starch.
[ "Fructose", "insulin", "Splenda", "glucose" ]
D
3.2 | Carbohydrates By the end of this section, you will be able to: • Discuss the role of carbohydrates in cells and in the extracellular materials of animals and plants • Explain the classifications of carbohydrates • List common monosaccharides, disaccharides, and polysaccharides Most people are familiar with carboh...
medmcqa
medmcqa_05_00709
In the etiology of endometriosis Sampson's theory is :
[ "Implantation theory", "Coelomic metaplasia theory", "Metastatic theory", "Histogenesis by induction" ]
A
Implantation theory
openbookqa
obqa_02_02451
A rock quarry can contain in its rocks
[ "sunflowers", "foil material", "candles", "broken toys" ]
B
rocks sometimes contain aluminum
ARC-Easy
arc_04_00187
Which is an example of a chemical reaction?
[ "The melting of ice", "The grinding of salt crystals to powder", "The burning of wood", "The evaporation of water from a puddle" ]
C
null
openbookqa
obqa_02_01490
A blue colored item will only reflect
[ "all colors in the spectrum", "only the color white", "a combination of colors", "an exact matching color" ]
D
if an object is blue then that object reflects only blue light
math_qa
mathqa_03_00453
the product of three consecutive numbers is 504 . then the sum of the smallest two numbers is ?
[ "11", "15", "20", "38" ]
B
"product of three numbers = 504 504 = 7 * 8 * 9 . so , the three numbers are 7 , 8 and 9 . and sum of smallest of these two = 7 + 8 = 15 . answer : option b"
medmcqa
medmcqa_05_04631
Nerve damaged during sentinel node biopsy of breast carcinoma is: (2014 Feb D. REPEAT)
[ "Intercostobrachial nerve", "Lateral pectoral nerve", "Long thoracic nerve", "Nerve to latissimus dorsi" ]
A
Ans: A (Intercostobrachial nerve) Ref: Fischer JE et al, Master of Surgery, Lippincott. 2006. 5th edition, pg: 514 Explanation: "Complications of sentinel lymph node biopsy and axillary node sampling include hematoma formation, wound infection, seroma, lymphedema and damage to intercostobrachial nerve." Ref Fischer et ...
ARC-Challenge
arc_04_03226
Currently, Antarctica is the coldest and driest place on Earth. Paleontologists have found dinosaur fossils in rock layers below the ice. Based on this evidence, which is a reasonable conclusion about the climate of Antarctica in the past?
[ "Antarctica has always had the same climate as at present.", "At some time in the past, Antarctica was a hot, dry desert.", "At some time in the past, Antarctica was much warmer and wetter.", "At some time in the past, Antarctica was colder and wetter than it is now." ]
C
null
sciq
sciq_01_02750
How many sperm does it take to fertilize an egg?
[ "two", "one", "five", "ten" ]
B
85 million sperm per day are produced. per testicle. That's 170,000,000 every day. This means that a single male may produce more than a quadrillion (1,000,000,000,000) sperm cells in his lifetime! But it only takes one to fertilize an egg.
math_qa
mathqa_03_03532
if 213 × 16 = 3408 , then 1.6 × 21.3 is equal to :
[ "0.3408", "3.408", "34.08", "340.8" ]
C
"solution 1.6 × 21.3 = ( 16 / 10 x 213 / 10 ) = ( 16 x 213 / 100 ) = 3408 / 100 = 34.08 . answer c"
medmcqa
medmcqa_05_00465
which cranial nerve is present arround the origin of occipital aery of lower end of sternocleidomastoid muscle ?
[ "spinal accesory cranial nerve", "superior laryngeal nerve", "hypoglossal nerve", "petrosal nerve" ]
C
hypoglossal nerve hooks arround the origin of occipital aery of lower end of sternocleidomastoid muscle ref : bd chaursia
math_qa
mathqa_03_03043
a train travels from new york to chicago , a distance of approximately 840 miles , at an average rate of 60 miles per hour and arrives in chicago at 7 : 00 in evening , chicago time . at what hour in the morning , new york time , did the train depart for chicago ? ( note : chicago time is one hour earlier than new york...
[ "3 : 00", "4 : 00", "5 : 00", "6 : 00" ]
D
"7 : 00 in evening in chicago = 8 : 00 in evening in new york . so , the train was in chicago 8 : 00 in the evening , new york time . the trip took t = d / r = 840 / 60 = 14 hours . therefore , the train depart from new york at 8 : 00 - 14 hours = 6 : 00 in the morning , new york time . answer : d ."
sciq
sciq_01_09384
Solutions that are prepared in which a solute concentration exceeds its solubility are called what?
[ "mineralized", "solidified", "instantiated", "supersaturated" ]
D
Solutions may be prepared in which a solute concentration exceeds its solubility. Such solutions are said to be supersaturated, and they are interesting examples of nonequilibrium states. For example, the carbonated beverage in an open container that has not yet “gone flat” is supersaturated with carbon dioxide gas; gi...
medmcqa
medmcqa_05_02507
Which of the following best represents the impoance of Rheumatoid factor in rheumatoid ahritis?
[ "Rheumatoid factor is associated with bad prognosis", "Rheumatoid factor correlates with disease activity", "Rheumatoid factor is very common in childhood Rheumatoid ahritis", "Absent rheumatoid factor rules out the diagnosis of Rheumatoid ahritis" ]
A
Rheumatoid factor (RF) consists of heterogeneous autoantibodies of the IgM class that react against the Fc region of human IgG. It is found in 70% of rheumatoid ahritis patients and is associated with a worse prognosis, since higher levels of rheumatoid factor are associated with more aggressive disease, rheumatoid nod...
math_qa
mathqa_03_03542
the average temperature for monday , tuesday , wednesday and thursday was 48 degrees and for tuesday , wednesday , thursday and friday was 46 degrees . if the temperature on monday was 44 degrees . find the temperature on friday ?
[ "65 degrees", "73 degrees", "36 degrees", "34 degrees" ]
C
"m + tu + w + th = 4 * 48 = 192 tu + w + th + f = 4 * 46 = 184 m = 44 tu + w + th = 192 - 44 = 148 f = 184 – 148 = 36 answer : c"
medmcqa
medmcqa_05_00060
Bronchiectasis sicca is seen with:
[ "TB", "Peussis", "Cystic fibrosis", "Kaagener syndrome" ]
A
Bronchiectasis sicca- all features of bronchiectasis but absence of copious amount of sputum which is usually a hallmark of bronchiectasis. HRCT chest shows abnormal dilation of the tracheal bronchial tree ; it is present without infective sputum and occurs due to tuberculosis.
sciq
sciq_01_06102
Human beings depend on learned behaviors more than any other?
[ "Beings", "species", "Organisms", "mammals" ]
B
Human beings depend on learned behaviors more than any other species. Think about some of the behaviors you have learned. They might include making a bed, riding a bicycle, using a computer, and playing a sport, to name just a few. You may have learned each of the behaviors in different ways. There are several differen...
sciq
sciq_01_11528
What are the three primary pigment colors?
[ "red, green, blue", "green, orange, purple", "cyan, yellow, magenta", "red, white, blue" ]
C
Pigments are substances that color materials by reflecting light of certain wavelengths and absorbing light of other wavelengths. The primary pigment colors are cyan, yellow, and magenta. They can be combined to produce all other colors.
sciq
sciq_01_07211
What effect causes winds and currents to form circular patterns?
[ "coriolis effect", "centrifugal effect", "jet stream", "horse latitudes" ]
A
The Coriolis effect causes winds and currents to form circular patterns. The direction that they spin depends on the hemisphere that they are in.
openbookqa
obqa_02_00980
Which of the following are found in woodlands?
[ "Scorpions", "Crickets", "Camels", "Whales" ]
B
some crickets live in forests
medmcqa
medmcqa_05_01120
A 6 years old boy presented with Complex seizures per day in spite of adequate 4 drug antiepileptic regime. He had history of repeated high-grade fever in childhood. MRI for epilepsy protocol revealed normal brain scan. Which of the following will not be helpful for functional imaging of brain?
[ "MDCT", "SPECT imaging", "Interictal 18F-FDG PET", "Video EEG with Ictal 99mTc- HMPAO study of brain" ]
A
Brain perfusion study using perfusion agents like Tc-99m HMPAO, i.e., Tc-9W6HMPAO brain SPECT is indicated in acute cerebral infarct imaging before evidence of CT/MRI pathology, when positive findings are seen with 1 hour of event. Brain metabolic rate and functional activity study by using 18F –FDG PET is indicated in...
openbookqa
obqa_02_01474
A student waiting for class to be over, in the last minute until the bell rings
[ "watches a UFO", "works at factories", "counts down portions", "sleeps at home" ]
C
seconds are used to measure time
math_qa
mathqa_03_00966
the distance between two cities a and b is 465 km . a train starts from a at 8 a . m . and travel towards b at 60 km / hr . another train starts from b at 9 a . m and travels towards a at 75 km / hr . at what time do they meet ?
[ "09", "07", "12", "05" ]
C
"explanation : suppose they meet x hrs after 8 a . m then , [ distance moved by first in x hrs ] + [ distance moved by second in ( x - 1 ) hrs ] = 465 therefore , 60 x + 75 ( x - 1 ) = 465 = > x = 3 . so , they meet at ( 8 + 4 ) i . e , 12 noon answer : c )"
openbookqa
obqa_02_03389
An example of pollution might be
[ "recycling old glass to make a house", "throwing plastic in the ocean", "donating clothes to a thrift shop", "Using old shirts to make a blanket" ]
B
pollution is a source of pollutants
medmcqa
medmcqa_05_02844
Chediak Higashi syndrome is characterisedwhich of the following defect of patelets?
[ "Platelet formation", "Platelet adhesion", "Platelet aggregation", "Platelet granule release" ]
D
Ans. is 'd' i.e., Platelet granule release
medmcqa
medmcqa_05_04388
The ratio of ICF volume to Extracellular fluid volume reaches adult values at the age of
[ "1 year", "2 years", "3 years", "4 years" ]
A
Total body water is divided between 2 main compaments: intracellular fluid (ICF) and extracellular fluid (ECF). In the fetus and newborn, the ECF volume is larger than the ICF volume. The normal postnatal diuresis causes an immediate decrease in the ECF volume. This is followed by continued expansion of the ICF volume,...
sciq
sciq_01_01253
Most molecular compounds that have a mass similar to water are in what state of matter at room temperature?
[ "solid", "gas", "liquid", "vapor" ]
B
The hydrogen bonding that occurs in water leads to some unusual, but very important properties. Most molecular compounds that have a mass similar to water are gases at room temperature. Because of the strong hydrogen bonds, water molecules are able to stay condensed in the liquid state. The Figure below shows how the b...
openbookqa
obqa_02_01855
A person notes that the moon goes through various phases and eventually repeats these phases over the course of
[ "every other new month", "about six more days", "just over a month", "just under a month" ]
D
a revolution of the moon around the Earth takes 1 month
ARC-Challenge
arc_04_03106
Which mechanism is not an example of a negative feedback mechanism in the human body?
[ "contracting muscles", "regulating blood pressure", "regulating body temperature", "maintaining blood sugar level" ]
A
null
sciq
sciq_01_09701
Silicon with an element that gives it extra electrons is which type of semiconductor?
[ "n-type", "m. Type", "i.g - type", "k. - type" ]
A
An n-type (negative-type) semiconductor consists of silicon and an element such as phosphorus that gives the silicon crystal extra electrons. You can see this in the Figure above . An n-type semiconductor is like the negative terminal of a battery.
math_qa
mathqa_03_03311
in a survey of political preferences , 78 % of those asked were in favour of at least one of the proposals : i , ii and iii . 50 % of those asked favoured proposal i , 30 % favoured proposal ii , and 20 % favoured proposal iii . if 5 % of those asked favoured all 3 of the proposals , what x percentage of those asked fa...
[ "10", "12", "17", "22" ]
C
bunuel , my answer for exactly 2 people was 17 and this was my approach : 100 % = ( a + b + c ) - ( anb + anc + bnc ) - 5 % + 22 % which leads me to x = 100 % = ( 50 + 30 + 20 ) - ( at least 2 people ) - 5 % + 22 % . c
sciq
sciq_01_08556
What colors in a neon sign represent real neon?
[ "yellow, white", "purple, blue", "red, orange", "blue, green" ]
C
“Neon” signs are familiar examples of gas discharge tubes. However, only signs that glow with the red-orange color seen in the figure are actually filled with neon. Signs of other colors contain different gases or mixtures of gases.
math_qa
mathqa_03_03174
if the annual increase in the population of a town is 4 % and the present number of people is 15625 , what will the population be in 3 years ?
[ "15265", "16458", "25600", "17576" ]
D
"the required population is = 15625 ( 1 + 4 / 100 ) ^ 3 = 15625 * 26 / 25 * 26 / 25 * 26 / 25 = 17576 answer is d"
medmcqa
medmcqa_05_01499
In a premature baby with convulsion after 2 days of bih, first investigation to be done is:
[ "Transcranial USG", "MRI", "Skull radiography", "CT skull" ]
A
- Intracranial hemorrhage can be a common cause for seizures in a preterm neonate, - It can be picked up easily on a transcranial USG through the open anterior fontanelle.
sciq
sciq_01_06026
What type of carbons may be gases, liquids, or solids at room temperature?
[ "hydrocarbons", "amorphous", "diamonds", "graphites" ]
A
Hydrocarbons vary greatly in size, which influences properties such as melting and boiling points. At room temperature, hydrocarbons may be gases, liquids, or solids. They are generally nonpolar and do not dissolve in water.
medmcqa
medmcqa_05_02542
Coventional X-ray film is made of?
[ "Silver chloride", "Silver bromide", "Silver nitrate", "Gold chloride" ]
B
*The Photosensitive material used in Xray film is Silver bromide *Double coated emulsions of silver halides,mainly silver bromide is used in conventional radiography. Silver halide is the lightsensitive material in the emulsion. The halide in medical x-ray film is about 90 to 99% silver bromide and about 1 to 10% silve...
ARC-Easy
arc_04_00122
For a technology project, Kyle came up with an idea to build a model bridge. He wants his bridge to span 50 cm and to support a 1 kg object. According to the engineering design process, which of the following should be Kyle's next step?
[ "construct prototypes of different kinds of bridges", "research the different designs of bridges", "gather the materials needed to build the bridge", "make a drawing to show how to build the bridge" ]
B
null
ARC-Easy
arc_04_00215
A simple machine that helps move a flag up a flagpole is
[ "a bar magnet", "an inclined plane", "a pulley", "a lever" ]
C
null
math_qa
mathqa_03_04346
what is 15 percent of 44 ?
[ "6.6", "7.8", "8.9", "9.4" ]
A
"( 15 / 100 ) * 44 = 6.6 the answer is a ."
medmcqa
medmcqa_05_04317
Which of the following is not a potential aetiology of peripheral cyanosis?
[ "Cold exposure", "Deep venous thrombosis", "Methemoglobinemia", "Peripheral vascular disease" ]
C
In the evaluation of cyanosis, the first step is to differentiate central from peripheral cyanosis. In central cyanosis, because the etiology is either reduced oxygen saturation or abnormal hemoglobin, the physical findings include bluish discoloration of both mucous membranes and skin.In contrast, peripheral cyanosis ...
sciq
sciq_01_08684
Elements below the second period, such as silicon, do not form what as readily as second-period elements, and when they do form, they are weaker than those formed by second-period elements?
[ "n bonds", "covalent bonds", "k. bonds", "magnetic bonds" ]
A
Silicon dioxide, silica, occurs in both crystalline and amorphous forms. The usual crystalline form of silicon dioxide is quartz, a hard, brittle, clear, colorless solid. It is useful in many ways—for architectural decorations, semiprecious jewels, and frequency control in radio transmitters. Silica takes many crystall...
openbookqa
obqa_02_03700
during the winter, a man's central heating stops functioning. Which of these could be a lifeline?
[ "cranking on the air conditioner", "leaving the oven lid open", "leaving the fan on", "leaving the window open" ]
B
an oven is a source of heat
ARC-Challenge
arc_04_03006
Many stars can be seen in the sky at night. Which statement best explains why the Sun appears brighter than the stars seen in the night sky?
[ "The Sun is bigger than the stars seen in the night sky.", "The Sun is smaller than the stars seen in the night sky.", "The Sun is closer to Earth than the stars seen in the night sky.", "The Sun is farther from Earth than the stars seen in the night sky." ]
C
null
medmcqa
medmcqa_05_03809
28 year old primigravida gave birth to a male child which presented with midline dimple and tuft of hair in the lower back, which vitamin supplementation could have possibly prevented this if if was due to nutritional deficiency in the mother
[ "Vitamin B9", "Vitamin B6", "Vitamin B12", "Vitamin B3" ]
A
The child has presented with spina bifida occulta. Vitamin B9 (folic acid) deficiency in pregnant female can cause neural tube defects (spina bifida, Anencephaly) in the baby.
math_qa
mathqa_03_01102
how many pieces of 0.42 meteres can be cut from a rod 36.5 meteres long
[ "30", "40", "86", "89" ]
C
"explanation : we need so simple divide 36.5 / 0.42 , = ( 3650 / 42 ) = 86 option c"
sciq
sciq_01_02351
Thylakoids in a chloroplast contain what plant pigment?
[ "dye", "chlorophyll", "melanin", "ultramarine" ]
B
The structure of a chloroplast is shown in Figure below . The chloroplast is surrounded by two membranes. Inside the chloroplast are stacks of flattened sacs of membrane, called thylakoids . The thylakoids contain chlorophyll. Surrounding the thylakoids is a space called the stroma . The stroma is filled with watery ("...
sciq
sciq_01_01349
How much can the bacteria in your gut weigh?
[ "2.15 pounds", "2.2 pounds", "2 kilograms", "2 pounds" ]
D
Lastly, keep in mind the small size of bacteria. Together, all the bacteria in your gut may weight just about 2 pounds.
openbookqa
obqa_02_02050
Which would directly follow the appearance of grey clouds?
[ "UFOs", "planes", "sleet", "tsunami" ]
C
grey clouds are a source of precipitation
medmcqa
medmcqa_05_01856
A 30-year-old female presents with a 3-month history of 10kg weight loss despite an increased appetite. She also complains of anxiety, diarrhea and amenorrhea. Examination reveals a fine tremor, brisk reflexes and a systolic murmur heard throughout the precordium. A urine pregnancy screen was negative. What is the most...
[ "Pulsus paradoxus", "Collapsing pulse", "Irregularly irregular pulse", "Pulsus alternans" ]
C
Female, weight loss in spite of appetite, amenorrhea, tremors, brisk reflexes are features of Thyrotoxicosis Option A- Pulses Paradoxus is feature of C. Tamponade it is ruled out Option B- Collapsing pulse- Rapidly rising pulse, which collapses suddenly as aerial pressure falls rapidly, during late systole and diastole...
openbookqa
obqa_02_00107
The sun is a source of which, first and foremost?
[ "Light", "Energy", "Heat", "Nutrients)" ]
A
the sun is a source of light called sunlight
sciq
sciq_01_01345
The duodenum, the jejunum, and the ileum are the main regions of which organ?
[ "heart", "large intestine", "lungs", "small intestine" ]
D
23.5 The Small and Large Intestines The three main regions of the small intestine are the duodenum, the jejunum, and the ileum. The small intestine is where digestion is completed and virtually all absorption occurs. These two activities are facilitated by structural adaptations that increase the mucosal surface area b...
sciq
sciq_01_03327
What is your body made up of?
[ "energy", "millions of elements", "skin", "trillions of cells" ]
D
According to the cell theory , all living things are made up of cells, which is the structural unit of living organisms, and living cells always come from other living cells. In fact, each living thing begins life as a single cell. Some living things, such as bacteria, remain single-celled. Other living things, includi...
medmcqa
medmcqa_05_03817
Classification of staphylococcus is based on -
[ "Catalase test", "Coagulase test", "Mannitol fermentation", "Optochin sensitivity" ]
B
Ans. is 'b' i.e., Coagulase test * Medically important staphylococci that causing human disease are divided into two groups1. Coagulase positive: Staphylococcus aureus.2. Coagulase negative: Staphylococcus epidermidis, Staphylococcus haemolyticus, Staphylococcus saprophyticus.
math_qa
mathqa_03_03701
288 ã · ? ã — 15 + 270 = 405
[ "24", "25", "32", "39" ]
C
"explanation : 288 ã · ? ã — 15 = 405 - 270 = 135 ( 288 ã — 15 ) / ? = 135 ? = ( 288 ã — 15 ) / 135 = 32 answer : option c"
math_qa
mathqa_03_03506
the h . c . f . of two numbers is 23 and the other two factors of their l . c . m . are 13 and 17 . the larger of the two numbers is :
[ "276", "299", "391", "345" ]
C
"clearly , the numbers are ( 23 x 13 ) and ( 23 x 17 ) . larger number = ( 23 x 17 ) = 391 . answer : option c"
ARC-Challenge
arc_04_02870
A student recorded the growth rate of plants grown in the presence of two different types of music. Plants grown in the presence of one type of music grew faster than the other plants. Before reporting a conclusion, which should the student most likely do?
[ "use different plants", "do the experiment again", "add a third type of music", "use fewer plants" ]
B
null
math_qa
mathqa_03_00137
of the goose eggs laid at a certain pond , 2 / 3 hatched and 3 / 4 of the geese that hatched from those eggs survived the first month . of the geese that survived the first month , 3 / 5 did not survive the first year . if 110 geese survived the first year and if no more than one goose hatched from each egg , how many ...
[ "280", "400", "540", "550" ]
D
"of the goose eggs laid at a certain pond , 2 / 3 hatched and 3 / 4 of the geese that hatched from those eggs survived the first month : 2 / 3 * 3 / 4 = 1 / 2 survived the first month . of the geese that survived the first month , 3 / 5 did not survive the first year : ( 1 - 3 / 5 ) * 1 / 2 = 1 / 5 survived the first y...
medmcqa
medmcqa_05_04364
Synchysis refers to:
[ "Liquefaction of the vitreous", "Black spots in front of the eyes", "Collapse of the vitreous", "Detachment of the vitreous" ]
A
Ans. Liquefaction of the vitreous
ARC-Easy
arc_04_00216
Which cellular structure allows nutrients to pass into cells?
[ "mitochondrion", "nucleus", "membrane", "chloroplast" ]
C
null
medmcqa
medmcqa_05_00902
Drug of choice for akathesia caused by use of haloperidol is
[ "Propranolol", "Benzhexol", "Diazepam", "Levodopa" ]
A
EPS Drug Of Choice Dystonia Benzhexol Akathisia Propranolol Parkinsonism Benzhexol Malignant neuroleptic syndrome Dantrolene Tardive dyskinesia Valbenazine
math_qa
mathqa_03_01518
the annual interest rate earned by an investment increased by 10 percent from last year to this year . if the annual interest rate earned by the investment this year was 9 percent , what was the annual interest rate last year ?
[ "1 %", "1.1 %", "8.18 %", "10 %" ]
C
"9 = 1.1 * x x = 8.18 % answer c )"
math_qa
mathqa_03_04945
find the least number must be subtracted from 724946 so that remaining no . is divisible by 10 ?
[ "0", "2", "4", "6" ]
D
"on dividing 724946 by 10 we get the remainder 6 , so 6 should be subtracted d"
ARC-Easy
arc_04_02100
Angela wants to report daily weather conditions. In which unit should Angela record the air temperature?
[ "degrees Celsius", "centimeters", "milliliters", "grams" ]
A
null
medmcqa
medmcqa_05_00893
Which of the following is an selective a 2 antagonist?
[ "Prazosin", "Labetalol", "Yohimbine", "Butoxamine" ]
C
Ans. is 'c' i.e., Yohimbine Selective a2-antagonists are yohimbine and idozoxon.
ARC-Challenge
arc_04_03055
Which of the following represents the velocity of a moving object?
[ "40", "40 m north", "40 m/s", "40 m/s north" ]
D
null
medmcqa
medmcqa_05_00463
Her2/neu gene is on which chromosome?
[ "13", "14", "15", "17" ]
D
Answer- D. 17ERBB2, a known proto-oncogene, located at the long arm of human chromosome 17 (17q12)HER2 is a member of the human epidermal growth factor receptor (HER/EGFR/ERBB) which is plasma membrane-bound receptor tyrosine kinase.
ARC-Challenge
arc_04_02843
Kailey and LeAnn were preparing a report on ocean tides. Which information should they include in their report concerning the greatest influence on the strength of a high tide in a particular area?
[ "the position of the Moon around Earth", "the position of Earth around the Sun", "the rotation of the Moon", "the rotation of Earth" ]
A
null
math_qa
mathqa_03_04466
at joel ’ s bookstore , the current inventory is 40 % historical fiction . of the historical fiction books , 40 % are new releases , while 20 % of the other books are new releases . what fraction of all new releases are the historical fiction new releases ?
[ "4 / 25", "8 / 23", "2 / 5", "8 / 14" ]
D
"let there be 100 books in all historic fiction books = 40 % of total = 40 other books = 60 new historic fiction = 40 % of 40 = 16 other new books = 20 % of 60 = 12 total new books = 28 fraction = 16 / 28 = 8 / 14 ans : d"
math_qa
mathqa_03_03994
a question paper has 2 parts , a & b , each containing 6 questions . if a student has to choose 4 from part a & 3 from part b , in how many ways can he choose the questions ?
[ "100", "200", "350", "150" ]
D
"there 6 questions in part a out of which 4 question can be chosen as = 6 c 4 . similarly , 3 questions can be chosen from 6 questions of part b as = 6 c 3 . hence , total number of ways , = 6 c 4 * 6 c 3 = [ 6 ! / ( 2 ! 4 ! ) ] * [ 6 ! / ( 3 ! * 3 ! ) ] = { 15 } * { 6 * 5 * 4 * 3 / ( 3 * 2 * 1 ) } = 300 . d"
sciq
sciq_01_04539
What property allows cut logs to float on water?
[ "heat", "precipitation", "density", "polarity" ]
C
After trees are cut, logging companies often move these materials down a river to a sawmill where they can be shaped into building materials or other products. The logs float on the water because they are less dense than the water they are in. Knowledge of density is important in the characterization and separation of ...
medmcqa
medmcqa_05_00800
Non-Frame shift Mutation of Dystrophin gene causes:
[ "Duchenne Muscular dystrophy", "Becker's Muscular Dystrophy", "Myotonic Dystrophy", "Limb Girdle Dystrophy" ]
B
Duchenne&;s and Becker&;s Muscular Dystrophies are both caused by a mutation on the dystrophin gene located on the X Chromosome (Xp21). An out-of-Frame mutation typically results in complete disruption of dystrophin production and causes Duchenne&;s Dystrophy. An in-Frame mutation results in a shoened but semi-function...
sciq
sciq_01_08570
Untreated chlamydia can lead to pelvic inflammatory disease, which affects what organ system?
[ "endocrine system", "circulatory system", "female reproductive system", "nervous system" ]
C
Symptoms of chlamydia may include a burning sensation during urination and a discharge from the vagina or penis. Chlamydia can be cured with antibiotics , but often there are no symptoms, so people do not seek treatment. Untreated chlamydia can lead to more serious problems, such as pelvic inflammatory disease (PID) . ...
sciq
sciq_01_01567
The acidity of a solution is typically assessed experimentally by measurement of its what?
[ "density", "mass", "ph", "color" ]
C
The acidity of a solution is typically assessed experimentally by measurement of its pH. The pOH of a solution is not usually measured, as it is easily calculated from an experimentally determined pH value. The pH of a solution can be directly measured using a pH meter (Figure 14.4).
sciq
sciq_01_01100
What type of field does earth have?
[ "force field", "atmospheric", "magnetic", "seismic" ]
C
Earth has a magnetic field ( Figure below ). The magnetic field has north and south poles. The field extends several thousand kilometers into space. Earth’s magnetic field is created by the movements of molten metal in the outer core.
math_qa
mathqa_03_03838
cereal a is 10 % sugar by weight , whereas healthier but less delicious cereal b is 3 % sugar by weight . to make a delicious and healthy mixture that is 5 % sugar , what should be the ratio of cereal a to cereal b , by weight ?
[ "2 : 5", "2 : 7", "1 : 6", "1 : 4" ]
A
"ratio of a / ratio of b = ( average wt of mixture - wt of b ) / ( wt of a - average wt of mixture ) = > ratio of a / ratio of b = ( 5 - 3 ) / ( 10 - 5 ) = 2 / 5 so they should be mixed in the ratio 2 : 5 answer - a"
sciq
sciq_01_04095
Fructose and lactose are types of sugars broken down by the body to form what, which is the simplest sugar of all?
[ "glutamate", "sucrose", "glucose", "carbohydrate" ]
C
Sugars are small, simple carbohydrates that are found in foods such as fruits and milk. The sugar found in fruits is called fructose. The sugar found in milk is called lactose. These sugars are broken down by the body to form glucose (C 6 H 12 O 6 ), the simplest sugar of all.
sciq
sciq_01_02782
Name the closest living relatives of tetrapods?
[ "lumpfishes", "spinefishes", "shrimp", "lungfishes" ]
D
math_qa
mathqa_03_00932
a is twice as good a work man as b and together they finish the work in 6 days . in how many days a alone can finish the work ?
[ "3", "9", "7", "2" ]
B
"wc = 2 : 1 2 x + x = 1 / 6 = > x = 1 / 18 2 x = 1 / 9 a can do the work in 9 days . answer : b"
medmcqa
medmcqa_05_04200
Lipodermatosclerosis is most commonly seen at ?
[ "Anterior aspect of leg", "Medial aspect of leg", "Anterior aspect of thigh", "Posterior aspect of thigh" ]
B
Lipodermatosclerosis is chronic inflammation and fibrosis of skin and subcutaneous tissue, resulting in a woody leg, often affects calf muscles. So better answer is medial side of leg Feature of chronic venous disease. Reference: Bailey and love, 27th edition, page number 973,984.(pa 10, vascular)
sciq
sciq_01_06462
What occurs when a substance reacts quickly with oxygen?
[ "oxidation", "convection", "catalytic conversion", "combustion reaction" ]
D
A combustion reaction occurs when a substance reacts quickly with oxygen (O 2 ). You can see an example of a combustion reaction in Figure below . Combustion is commonly called burning. The substance that burns is usually referred to as fuel. The products of a combustion reaction include carbon dioxide (CO 2 ) and wate...
sciq
sciq_01_11581
What is the network of fibers that organizes structures and activities in the cell called?
[ "cytoskeleton", "DNA", "enzymes", "cytoplasm" ]
A
6.6 The cytoskeleton is a network of fibers that organizes structures and activities in the cell.
ARC-Challenge
arc_04_02228
Which factor can increase the amount of sulfur dioxide in the air?
[ "applying too much fertilizer to agricultural fields", "operation of coal-fired electric generating plants", "a hot summer day", "too much rain" ]
B
null
sciq
sciq_01_06377
The head of the sperm contains what, which holds the chromosomes?
[ "nerve cells", "nucleus", "eggs", "fiber" ]
B
The head of the sperm contains the nucleus. The nucleus holds the chromosomes. In humans, the nucleus of a sperm cell contains 23 chromosomes. The acrosome on the head contains enzymes that help the sperm penetrate an egg.
openbookqa
obqa_02_03894
a paper clip is often made of ferromagnetic
[ "hard shiny material", "cake", "water", "rubber" ]
A
a paper clip is often made of ferromagnetic metals
math_qa
mathqa_03_03143
how many 3 - digits number are palindromic numbers ? a palindromic number reads the same forward and backward , example 121 .
[ "90", "610", "729", "900" ]
A
"take the task of building palindromes and break it intostages . stage 1 : select the hundreds digit we can choose 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , or 9 so , we can complete stage 1 in 9 ways stage 2 : select the tens digit we can choose 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , or 9 so , we can complete stage 2 in 10 ways im...