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sciq
sciq_01_04707
What works by providing a lower energy pathway from reactants to products?
[ "catalyst", "hormones", "magnetism", "thermodynamics" ]
A
A catalyst works by providing a lower energy pathway from reactants to products. The use of a catalyst involves intermediate reactions which have lower activation complexes than the original reaction. On a simplified reaction energy diagram, this can be thought of as lowering the activation energy for a given transform...
sciq
sciq_01_06082
What do you call structures like a whale's pelvic bones, which were once attached to legs, or wings that cannot be used for flight?
[ "distinctive", "primitive", "primordial", "vestigial" ]
D
Penguins do not use their wings, known as flippers, to fly in the air. However, they do use them to move in the water. The theory of evolution suggests that penguins evolved to use their wings for a different purpose. A whale’s pelvic bones, which were once attached to legs, are also vestigial structures. Whales are de...
medmcqa
medmcqa_05_01737
The inhalational agent of choice in children is
[ "Methoxyflurane", "Sevoflurane", "Desflurane", "Isoflurane" ]
B
An inhaled induction of anesthesia with sevoflurane in oxygen with or without nitrous oxide is a common method used in children because it does not require IV access. IV induction is selected in children who already have IV access, who request an IV induction, or for whom an IV induction is indicated (full stomach, per...
medmcqa
medmcqa_05_00977
Whitfield's ointment consists of ?
[ "3% salicylic acid + 6% benzoic acid", "3% benzoic acid + 6% salicylic acid", "2% salicylic acid + 4% benzoic acid", "2% benzoic acid + 4% salicylic acid" ]
A
Ans. is 'a' i.e., 3% salicylic acid + 6% benzoic acid Whitfield's Ointment Whitfield's ointment is salicylic acid and benzoic acid in a suitable base, such as lanolin or vaseline. The original ointment contains 3% salicylic acid and 6% benzoic acid, but other ratios are also used. It is used for the treatment of fungal...
openbookqa
obqa_02_02798
Catfish are what
[ "cannibals", "fairies", "grapes", "unicorns" ]
A
predators eat prey
sciq
sciq_01_01316
What makes the realized niche of chthamalus much smaller than its fundamental niche?
[ "instantaneous competition", "interspecific competition", "asexual competition", "microscopic competition" ]
B
math_qa
mathqa_03_02360
a sum of money at simple interest amounts to rs . 825 in 3 years and to rs . 850 in 4 years . the sum is ?
[ "s . 738", "s . 750", "s . 650", "s . 730" ]
B
"s . i . for 1 year = ( 850 - 825 ) = rs . 25 s . i . for 3 years = 25 * 3 = rs . 75 principal = ( 825 - 75 ) = rs . 750 . answer : b"
math_qa
mathqa_03_02314
the amount of an investment will double in approximately 70 / p years , where p is the percent interest , compounded annually . if thelma invests $ 40,000 in a long - term cd that pays 5 percent interest , compounded annually , what will be the approximate total value of the investment when thelma is ready to retire 28...
[ "$ 160,000", "$ 320,000", "$ 360,000", "$ 450,000" ]
A
"the amount of an investment will double in approximately 70 / p years , where p is the percent interest , compounded annually . if thelma invests $ 40,000 in a long - term cd that pays 5 percent interest , compounded annually , what will be the approximate total value of the investment when thelma is ready to retire 4...
sciq
sciq_01_04918
Human blood has a buffering system to minimize extreme changes in what?
[ "calcium", "ions", "ph", "sodium level" ]
C
Buffers work well only for limited amounts of added strong acid or base. Once either solute is all reacted, the solution is no longer a buffer, and rapid changes in pH may occur. We say that a buffer has a certain capacity. Buffers that have more solute dissolved in them to start with have larger capacities, as might b...
sciq
sciq_01_01666
Gastric emptying is regulated by both the stomach and what other digestive structure?
[ "esophagus", "small intestine", "duodenum", "appendix" ]
C
greater amount of chyme at one time would overwhelm the capacity of the small intestine to handle it. The rest of the chyme is pushed back into the body of the stomach, where it continues mixing. This process is repeated when the next mixing waves force more chyme into the duodenum. Gastric emptying is regulated by bot...
sciq
sciq_01_07303
In statistics a boundary on the precision and accuracy is known as what?
[ "median", "frequency", "instance", "error" ]
D
An error is a boundary on the precision and accuracy of the result of a measurement. Some errors are caused by unpredictable changes in the measuring devices (such as balances, rulers, or calipers), but other errors can be caused by reading a measuring device incorrectly or by using broken or malfunctioning equipment. ...
medmcqa
medmcqa_05_02311
Shield ulcer is seen in -
[ "Phylectenular conjunctivitis", "Spring Cattarrh", "Mycotic corneal ulcer", "Herpetic ulcer" ]
B
Impoant signs of spring catarrh Conjunctival Corneal Palpebral Bulbar $? Papillary hyperophy into polygonal $? Gelatinous thickening around $? Punctate epithelial keratitis papilla limbus $? Ulcerative vernal kratitis : shallow $? Giant papilla (Cauliflower $? Ducky red triangular congestion $? Pseudogerontoson : Chara...
sciq
sciq_01_07718
What are magnetites naturally attracted to?
[ "stone", "aluminum", "glass", "iron" ]
D
Magnetite naturally attracts iron nails and filings. Its natural magnetism was discovered thousands of years ago.
sciq
sciq_01_05747
In humans, how many chromosomes does each somatic cell have?
[ "36", "51", "48", "46" ]
D
medmcqa
medmcqa_05_01579
The age and sex structure of a population may be best described by
[ "Life table", "Correlation coefficient", "Population pyramid", "Bar cha" ]
C
The age and sex composition of a country can be best described by population pyramid. Age group from 0-80+ is represented in a scale and the male and female population are represented on either side of the population pyramid. Reference: Park&;s textbook of preventive and social medicine, 23rd edition, pg no: 482,483
sciq
sciq_01_07119
Each month, starting in puberty, one egg matures and is released from where?
[ "uterus", "testes", "pollen", "ovary" ]
D
Each month, starting in puberty, one egg matures and is released from the ovary.
openbookqa
obqa_02_00882
What requires nutrients to grow and heal?
[ "birds", "computers", "dirt", "metals" ]
A
an animal requires nutrients to grow and heal
medmcqa
medmcqa_05_02228
Dohlman surgery in Zenker's diveiculum is:-
[ "Endoscopic stapling of septum", "Endoscopic suturing of pouch", "Endoscopic electrocautery technique", "Laser division of pouch" ]
C
Killian's Dehiscence/ Pharyngeal Pouch - A pharyngeal pouch is a herniation of pharyngealmucosa through a defect (usually posterior) in the pharyngealwall. The terms Zenker's diveiculum and hypopharyngealdiveiculum are also used.The most frequent location of the herniation is theposterior wall of the pharynx through an...
math_qa
mathqa_03_01407
there is 60 % increase in an amount in 6 years at si . what will be the ci of rs . 11,000 after 3 years at the same rate ?
[ "3641", "2572", "4542", "2343" ]
A
"let p = rs . 100 . then , s . i . rs . 60 and t = 6 years . r = 100 x 60 = 10 % p . a . 100 x 6 now , p = rs . 11000 . t = 3 years and r = 10 % p . a . c . i . = rs . 11000 x 1 + 10 3 - 1 100 = rs . 11000 x 331 1000 = 3641 . a"
sciq
sciq_01_05155
In contrast to metals, electrical insulators are materials that conduct electricity poorly because their valence bands are what?
[ "half-full", "large", "full", "empty" ]
C
Insulators In contrast to metals, electrical insulators are materials that conduct electricity poorly because their valence bands are full. The energy gap between the highest filled levels and the lowest empty levels is so large that the empty levels are inaccessible: thermal energy cannot excite an electron from a fil...
medmcqa
medmcqa_05_03640
The right phrenic nerve passes through which of the following openings in the diaphragm?
[ "Aoic opening", "Oesophageal opening", "Vena caval opening", "Directly pierces the diaphragm" ]
C
Right phrenic nerve passes through inferior vena caval opening in the diaphragm which lies at the level of eighth thoracic veebrae. And left phrenic nerve passes through the muscular pa in front of the central tendon. Major apeures in the diaphragm:Vena caval opening in the T8 levelEsophageal hiatus at T10 levelAoic op...
ARC-Easy
arc_04_01554
A metal ball has a constant velocity of zero. Which other quantity must also be zero?
[ "weight of the ball", "energy of the ball", "acceleration of the ball", "inertia of the ball" ]
C
null
openbookqa
obqa_02_00497
Which organism uses xylem for materials transport?
[ "saguaro cactus", "liverwort", "green algae", "sphagnum moss" ]
A
xylem transports materials through the plant
medmcqa
medmcqa_05_02389
Which of the following muscles is enclosed within the clavipectoral fascia ?
[ "Pectoralis major", "Serratus anterior", "Coracobrachialis", "Subclavius" ]
D
Subclavius is enclosed inside clavipectoral fascia. BD CHAURASIA'S HUMAN ANATOMY VOLUME 1. 6TH EDITION. PAGE NO38. fig 3.12a
sciq
sciq_01_06482
Once a plant cell becomes specialized, what can they no longer do?
[ "osmosis", "photosynthesis", "cellular respiration", "divide" ]
D
As plant cells grow, they also become specialized into different cell types. Once cells become specialized, they can no longer divide. So how do plants grow after that? The key to continued growth is meristem. Meristem is a type of plant tissue consisting of undifferentiated cells that can continue to divide.
ARC-Easy
arc_04_00573
According to the Big Bang Theory, how is the universe changing?
[ "It is contracting.", "It is expanding.", "Only the rim is expanding.", "Only the center is contracting." ]
B
null
medmcqa
medmcqa_05_03237
McBurney's point corresponds to which pa of appendix:
[ "Tip", "Base", "Orifice", "Mid poion" ]
B
Base
medmcqa
medmcqa_05_03186
A 30 year old farmer presents with the features of high fever, painful inguinal lymphadenopathy, vomiting and diarrhoea with hypotension. Which of the following stain will be helpful in making the diagnosis?
[ "Wayson's stain", "Neisser stain", "Albes stain", "McFadyean's stain" ]
A
Wayson's stain is a basic fuchsin - methylene blue, ethyl alcohol - phenol microscopic staining procedure. It is a modified methylene blue stain used for diagnosing bubonic plague. Giemsa / Wayson stain revels the typical safety- pin apperance of the organism. In Bubonic plague the infected flea bite is usually on the ...
sciq
sciq_01_07346
The cerebellum is associated with what major human organ?
[ "bladder", "heart", "liver", "brain" ]
D
Figure 13.13 The Cerebellum The cerebellum is situated on the posterior surface of the brain stem. Descending input from the cerebellum enters through the large white matter structure of the pons. Ascending input from the periphery and spinal cord enters through the fibers of the inferior olive. Output goes to the midb...
ARC-Easy
arc_04_00646
Which cells help to destroy pathogens such as bacteria that enter the human body?
[ "red blood cells", "liver cells", "white blood cells", "brain cells" ]
C
null
sciq
sciq_01_11480
How do genes located on separate nonhomologous chromosomes sort?
[ "independently", "typically", "mechanically", "intradependently" ]
A
Linked Genes Violate the Law of Independent Assortment Although all of Mendel’s pea characteristics behaved according to the law of independent assortment, we now know that some allele combinations are not inherited independently of each other. Genes that are located on separate nonhomologous chromosomes will always so...
math_qa
mathqa_03_02265
two friends decide to get together ; so they start riding bikes towards each other . they plan to meet halfway . each is riding at 6 mph . they live 36 miles apart . one of them has a pet carrier pigeon and it starts flying the instant the friends start traveling . the pigeon flies back and forth at 12 mph between the ...
[ "54", "66", "80", "36" ]
D
d 36 it takes 3 hours for the friends to meet ; so the pigeon flies for 3 hours at 12 mph = 36 miles
math_qa
mathqa_03_03409
what is the sum of the 1 st 6 prime numbers greater than 10 ?
[ "112", "111", "212", "115" ]
A
required numbers are = ( 11 + 13 + 17 + 19 + 23 + 29 ) = 112 note : 1 is not a prime number answer a
sciq
sciq_01_01107
Name the 2 types of carbohydrates?
[ "simple and thermal", "simple and complex", "simple and structural", "simple and nuclear" ]
B
Carbohydrates are nutrients that include sugars, starches, and fiber. There are two types of carbohydrates: simple and complex. Pictured below are some foods that are good sources of carbohydrates ( Figure below ).
sciq
sciq_01_10882
What type of switch automatically opens a circuit if too much current flows through it?
[ "regulator switch", "circuit breaker", "kill switch", "toggle switch" ]
B
A circuit breaker is a switch that automatically opens a circuit if too much current flows through it. This could happen if too many electric devices are plugged into the circuit or if there is an electric short. Once the problem is resolved, the circuit breaker can be switched back on to close the circuit. Circuit bre...
medmcqa
medmcqa_05_00085
'Falanga' is: AIIMS 08; TN 09; DNB 10; NEET 13
[ "Sitting in abnormal position", "Hitting the feet with stick", "Electric current for toure", "Pulling of hair" ]
B
Ans. Hitting the feet with stick
sciq
sciq_01_06326
The force exerted by a diving board is conservative, provided the internal friction is this?
[ "negligible", "static", "intrinsic", "significant" ]
A
7.4 Conservative Forces and Potential Energy 9. What is a conservative force? 10. The force exerted by a diving board is conservative, provided the internal friction is negligible. Assuming friction is negligible, describe changes in the potential energy of a diving board as a swimmer dives from it, starting just befor...
sciq
sciq_01_08807
A change in the sequence of bases in dna or rna is called a what?
[ "mutation", "infection", "accumulation", "isolation" ]
A
A change in the sequence of bases in DNA or RNA is called a mutation . Does the word mutation make you think of science fiction and bug-eyed monsters? Think again. Everyone has mutations. In fact, most people have dozens or even hundreds of mutations in their DNA. Mutations are essential for evolution to occur. They ar...
sciq
sciq_01_07474
Small crustaceans exchange gases across thin areas of the cuticle; larger species have what to accomplish this?
[ "gills", "noses", "pores", "lungs" ]
A
medmcqa
medmcqa_05_01205
Toxix shock syndrome occures after one of the following vaccinations
[ "DPT", "Recombinant DNA vaccine against hepatitis B", "Oral polio vaccine", "Measles vaccine" ]
D
toxic shock syndrome occurs when measles vaccine is contaminated or the same vaccine l is for more than one session on the same day or next day.the vaccine should be used within 4 hours after opening.TSS reflects poor quality of immunisation.other adverse effects include diarrhea,fever,and vomiting. ref:park&;s textboo...
openbookqa
obqa_02_01793
Plant population would fail to maintain it's size if
[ "fertilizer is applied", "gets more sun", "H2O depletes", "grows" ]
C
as available water decreases , the population of plants will decrease
math_qa
mathqa_03_03972
if ( a + b ) = 16 , ( b + c ) = 9 and ( c + d ) = 3 , what is the value of ( a + d ) ?
[ "10 .", "8 .", "7 .", "2 ." ]
A
"given a + b = 16 = > a = 16 - b - - > eq 1 b + c = 9 c + d = 3 = > d = 3 - c - - > eq 2 then eqs 1 + 2 = > a + d = 16 - b + 3 - c = > 19 - ( b + c ) = > 19 - 9 = 10 . option a . . ."
math_qa
mathqa_03_03927
the average of 6 observations is 12 . a new seventh observation is included and the new average is decreased by 1 . the seventh observation is :
[ "1", "3", "5", "6" ]
C
"explanation : seventh observation = ( 7 × × 11 - 6 × × 12 ) = 5 correct option : c"
sciq
sciq_01_03420
Where in the periodic table of elements are the nonmetals located?
[ "bottom left", "top right", "bottom right", "top left" ]
B
As described in Section 1.7 "Introduction to the Periodic Table", the metals are on the bottom left in the periodic table, and the nonmetals are at the top right. The semimetals lie along a diagonal line separating the metals and nonmetals. In most cases, the symbols for the elements are derived directly from each elem...
openbookqa
obqa_02_04923
What best explains a muddy road becoming dry later?
[ "alien heat rays", "evaporation", "precipitation", "torrential rain" ]
B
if a liquid disappears then that liquid probably evaporated
math_qa
mathqa_03_03063
in a family 11 people eat only vegetarian , 6 people eat only non veg . , 9 people eat both veg and non veg . . how many people eat veg in the family ?
[ "20", "11", "9", "31" ]
A
"total people eat veg = only veg + both veg and non veg total = 11 + 9 = 20 answer = a"
openbookqa
obqa_02_03601
Which child's plaything is inflated with gas when it's in use?
[ "Nintendo", "Miracle Bubble", "Bicycle", "Sidewalk chalk" ]
B
a bubble contains gas
ARC-Easy
arc_04_01598
The Theory of Plate Tectonics revolutionized scientific thought because it
[ "explained the movement of oceanic and continental crusts.", "demonstrated how tidal forces affect coastlines.", "mapped the pattern and frequency of earthquakes.", "explained the mineral differences between continents." ]
A
null
sciq
sciq_01_06083
What type of hybridization does ammonia undergo?
[ "h2O hybridization", "sp 3 hybridization", "nh3 hybridization", "ionic hybridization" ]
B
The methane and ammonia examples illustrate the connection between orbital hybridization and the VSEPR model. The electron domain geometry predicted by VSEPR leads directly to the type of hybrid orbitals that must be formed to accommodate that geometry. Both methane and ammonia have tetrahedral electron domain geometri...
ARC-Challenge
arc_04_02703
What is one way plants and animals are different?
[ "Plants do not need minerals, and animals do.", "Plants produce their own food, and animals do not.", "Plants do not produce oxygen, and animals do.", "Plants need sunlight, and animals do not." ]
B
null
math_qa
mathqa_03_04001
there were two candidates in an election . winner candidate received 62 % of votes and won the election by 408 votes . find the number of votes casted to the winning candidate ?
[ "288", "1054", "788", "298" ]
B
"w = 62 % l = 38 % 62 % - 38 % = 24 % 24 % - - - - - - - - 408 62 % - - - - - - - - ? = > 1054 answer : b"
openbookqa
obqa_02_02672
Skin can protect your
[ "emotions", "anger", "feelings", "squishy bits" ]
D
skin is used for protecting the body from harmful substances
sciq
sciq_01_05310
Radioactive decay can give off energy and what else?
[ "particles", "light", "atoms", "ions" ]
A
Radioactive elements and isotopes have unstable nuclei. To become more stable, the nuclei undergo radioactive decay. In radioactive decay, the nuclei give off, or emit, radiation in the form of energy and often particles as well. There are several types of radioactive decay, including alpha, beta, and gamma decay. Ener...
sciq
sciq_01_01357
In a food chain, what group of organisms breaks down animal remains and wastes to get energy?
[ "producers", "decomposers", "detritivores", "primary consumers" ]
B
Decomposers break down animal remains and wastes to get energy.
sciq
sciq_01_09305
What is the main component of phytoplankton?
[ "seawater", "cells", "algae", "amoebas" ]
C
Algae play significant roles as producers in aquatic ecosystems. Microscopic forms live suspended in the water column. They are the main component of phytoplankton. As such, they contribute to the food base of most marine ecosystems.
openbookqa
obqa_02_01250
Some animals are aided in finding food sources by
[ "aroma", "neon signs", "constellations", "mating calls" ]
A
smell is used for finding food by some animals
math_qa
mathqa_03_00192
a train 820 m long is running at a speed of 78 km / hr . if it crosses a tunnel in 1 min , then the length of the tunnel is ?
[ "510", "540", "480", "520" ]
C
"speed = 78 * 5 / 18 = 65 / 3 m / sec . time = 1 min = 60 sec . let the length of the train be x meters . then , ( 820 + x ) / 60 = 65 / 3 x = 480 m . answer : option c"
math_qa
mathqa_03_02633
chlorination is used in industry for the purification of water ; 1 gm solution of chlorine will remove half of the germs in 1 liter of water . if water containing less than 0.09 % of germs is considered clean , what is the minimum amount of chlorine required to purify 150 liter of water containing 0.3 liter of harmful ...
[ "1", "2", "3", "4" ]
B
assuming that it ' s supposed to state ` ` 0.3 ' ' liters of harmful substances , here ' s how you can answer this question . first , we have to figure out what . 09 % of 150 liters is . . . 1 % = . 01 . 1 % = . 001 . 09 % = . 0009 so , . 0009 ( 150 ) = . 135 liters we need enough doses of chlorine to get the 0.3 liter...
math_qa
mathqa_03_00979
how many three digit numbers w are divisible by 78 or 91 ?
[ "17", "19", "20", "21" ]
B
"the answer will be 19 . explanation : 78 = 2 * 3 * 13 now multiples of 78 , 156 . . . . 780 , now 1000 - 780 = 220 only two more muktiples of 78 can exists . so total number of 3 digit multiples of 78 are 9 + 2 = 11 91 = 13 * 7 - - total number of three digit multiples - - 9 no remember we have a common multiples as w...
medmcqa
medmcqa_05_02324
Nerve entering the inguinal canal through deep inguinal ring ?
[ "Ilioinguinal nerve", "Pudendal nerve", "Genital branch of genitofemoral", "Superior rectal nerve" ]
C
The spermatic cord in males and round ligament of uterus in females, enter the inguinal canal through the deep inguinal ring and pass out through superficial inguinal ring. Thus consituents of spermatic cord are also components of inguinal canal; these are ductus deferens (vas deferens), testicular aery, cremestric aer...
sciq
sciq_01_04173
What is the term for animals that cannot raise their body temperature on their own?
[ "ectothermic", "warm-blooded", "endothermic", "catabolic" ]
A
They are ectothermic , meaning their temperature depends on the temperature of their environment. Ectothermic animals are cold-blooded in that they cannot raise their body temperature on their own. This is unlike humans, whose temperature is controlled from inside the body.
math_qa
mathqa_03_01086
36 people { a 1 , a 2 … a 36 } meet and shake hands in a circular fashion . in other words , there are totally 36 handshakes involving the pairs , { a 1 , a 2 } , { a 2 , a 3 } , … , { a 35 , a 36 } , { a 36 , a 1 } . then size of the smallest set of people such that the rest have shaken hands with at least one person ...
[ "76'", "55'", "44'", "12'" ]
D
ans : { a 1 , a 2 } , { a 2 , a 3 } , { a 3 , a 4 } , { a 4 , a 5 } , { a 5 , a 6 } , { a 6 , a 7 } … , { a 35 , a 36 } , { a 36 , a 1 } from the above arrangement , if we separate a 3 , a 6 , a 9 , . . . . . a 36 . total 12 persons the reamining persons must have shaked hand with atleast one person . so answer is 12 ....
sciq
sciq_01_08103
What is used to date older fossils?
[ "litmus testing", "radioactive isotopes", "search engines", "electron microscopes" ]
B
medmcqa
medmcqa_05_00049
Epiretinal membrane is seen in -
[ "Posterior vitreous detachment", "Optic neuritis", "Papilloedema", "Glaucomatous optic atrophy" ]
A
Ans. is 'a' i.e. Posterior vitreous detachment o Epiretinal membrane is a disease of the eye in response to changes in the vitreous humor or more rarely, diabetes. It is also called macular pucker.o Sometimes, as a result of immune system response to protect the retina, cells converge in the macular area as the vitreou...
openbookqa
obqa_02_02698
Honeybees would most enjoy some
[ "foxhounds", "rusty knives", "creeping buttercup", "blackberry smartphones" ]
C
bees convert nectar into honey
sciq
sciq_01_08237
The strength of acids is measured on what scale?
[ "qcd", "μg", "Killalot", "ph" ]
D
The strength of acids is measured on the pH scale. A pH value less than 7 indicates an acid, and the lower the number is, the stronger the acid.
sciq
sciq_01_00786
What is the volume of the molecules of an ideal gas?
[ "zero", "three", "one", "two" ]
A
Because the molecules of an ideal gas are assumed to have zero volume, the volume available to them for motion is always the same as the volume of the container. In contrast, the molecules of a real gas have small but measurable volumes. At low pressures, the gaseous molecules are relatively far apart, but as the press...
openbookqa
obqa_02_03753
A good place to use a thermometer is
[ "your butt", "a radio", "a wall socket", "a bookbag" ]
A
a thermometer is used to measure temperature
medmcqa
medmcqa_05_01573
For the disposal of hospital refuse, the bag made with cadmium is not used because incineration of the bag causes poisonous toxic fumes evolution. The colour of the bag is –
[ "Black", "Red", "Blue", "Yellow" ]
B
Most medical waste is incinerated, a practice that is short-lived because of environmental considerations. The burning of solid and regulated medical waste generated by health care creates many problems. Medical waste incinerators emit toxic air pollutants and toxic ash residues that are the major source of dioxins in ...
medmcqa
medmcqa_05_04308
A 25-year-old man presents to rheumatologist with complaints of joint pain involving large joints of legs which exacerbates frequently accompanied by diarrhea. Which of the following gastrointestinal diseases is most likely to be implicated as the cause of the patient's joint problems?
[ "Amebic colitis", "Chronic appendicitis", "Diveiculosis", "Ulcerative colitis" ]
D
- Most frequent GIT disorder associated with sacroiliitis (related to HLA-B27) or lower limb ahritis is chronic inflammatory bowel diseases like ulcerative colitis & Crohn's disease. - Other GI diseases associated with ahropathy are Whipple's disease, Behcet's syndrome, and celiac disease.
sciq
sciq_01_03243
Prokaryotic cells have what structure outside their plasma membrane?
[ "plasma wall", "cell membrane", "cell wall", "sodium channel" ]
C
Most prokaryotic cells are much smaller than eukaryotic cells. They have a cell wall outside their plasma membrane. Prokaryotic DNA consists of a single loop. Some prokaryotes also have small, circular pieces of DNA called plasmids.
medmcqa
medmcqa_05_04244
Which of the following insecticides is a natural Which of the product ?
[ "Dieldrin", "Pyrethrum", "Parathion", "Carbaryl" ]
B
Ans. is 'b' i.e., Pyrethrum
ARC-Easy
arc_04_00207
Which of these involves the formation of a new chemical substance?
[ "evaporation of gasoline", "mixing salt and pepper", "dissolving sugar in tea", "rusting of an iron chain" ]
D
null
medmcqa
medmcqa_05_01969
Which virus causes hepatocellular carcinoma -
[ "Arbo", "Herpes", "Hepatitis-A", "Hepatitis-B" ]
D
Ans. is 'd' i.e., Hepatitis-B o Hepatitis-B and hepatitis-C can cause hepatocellular carcinoma.
sciq
sciq_01_08728
What do you call the fast-moving air currents high in the troposphere?
[ "stationary fronts", "jet streams", "wind streams", "cyclones" ]
B
Jet streams are fast-moving air currents high in the troposphere. They are also the result of unequal heating of the atmosphere. Jet streams circle the planet, mainly from west to east. The strongest jet streams are the polar jets. PIctured below is the northern polar jet ( Figure below ).
medmcqa
medmcqa_05_02635
Melanoma should be excised with a margin of ?
[ "2 cm", "5 cm", "7 cm", "10 cm" ]
A
Ans. is 'a' i.e., 2 cm
sciq
sciq_01_08866
What changes nitrogen gas from the atmosphere to nitrogen compounds that plants can absorb?
[ "bacteria", "pathogens", "tumors", "viruses" ]
A
Bacteria change nitrogen gas from the atmosphere to nitrogen compounds that plants can absorb.
medmcqa
medmcqa_05_00282
Genodermal disease that can cause skin malignancy are
[ "Xeroderma pogmentosa", "Neurofibromatosis", "Actinic keratosis", "Porphyria cutanea tarda" ]
A
A i.e. Xeroderma pigmentosa
sciq
sciq_01_00516
Light waves which interfere with themselves after interaction with a small aperture or target are said to what?
[ "reflect", "refract", "adduce", "diffract" ]
D
Waves are characterized by their ability to constructively and destructively interfere . Light waves which interfere with themselves after interaction with a small aperture or target are said to diffract .
sciq
sciq_01_05765
The sun and many other light sources produce waves that are randomly this?
[ "polarized", "obfuscated", "amplified", "colored" ]
A
The Sun and many other light sources produce waves that are randomly polarized (see Figure 27.39). Such light is said to be unpolarized because it is composed of many waves with all possible directions of polarization. Polaroid materials, invented by the founder of Polaroid Corporation, Edwin Land, act as a polarizing ...
sciq
sciq_01_06068
Platinum and gold are useful materials for constructing circuits because of their ability to resist what?
[ "nitrogen", "Electricity", "decomposition", "oxidation" ]
D
If something is MULTIcolored, it has many colors.
openbookqa
obqa_02_01975
A rose bush photosynthesizes and nearby people
[ "are stung by bees", "visit a foreign country", "get new fresh air", "drink more iced tea" ]
C
In the photosynthesis process oxygen has the role of waste product
openbookqa
obqa_02_00930
The mass of ground sliding down an embankment can be propagated by what?
[ "a storm", "forest fires", "global warming", "trees growing" ]
A
storms can cause a landslide
medmcqa
medmcqa_05_00943
Mechanism by which IUCD does not act :
[ "Chronic endometrial inflammation", "Increase the motility of tubes", "Inducing endometrial atrophy", "Inhibition of ovulation" ]
D
Ans. is d i.e. Inhibition of ovulation Mechanism of Action nf IUCD : Non medicated IUCD Cu containing IUCD Progestin releasing IUCD Act as a foreign body in * Elute copper which * They cause decidualization uterus and produce, a bring about enzymatic with atrophy of endometrial sterile inflammatory response & metabolic...
sciq
sciq_01_05541
What term is used to describe the process of removing wastes and excess water from the body?
[ "excretion", "diffusion", "aeration", "digestion" ]
A
Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis.
openbookqa
obqa_02_04754
This is most likely to be conserved:
[ "CO2", "toilet paper", "a soda can", "styrofoam" ]
C
a soda can is made of aluminum
openbookqa
obqa_02_04117
If a living animal is going to be in an ideal situation, at a minimum it will have
[ "a residence", "a beating", "a sled", "a liver transplant" ]
A
an animal requires shelter
math_qa
mathqa_03_03619
a store reported total sales of $ 385 million for february of this year . if the total sales for the same month last year was $ 320 million , approximately what was the percent increase r in sales ?
[ "2 %", "17 %", "20 %", "65 %" ]
C
last year ' s sales = $ 320 million ; this year ' s sales = $ 385 million ; increase r = $ 65 million . now , 20 % of $ 320 million is $ 64 million , which is very close to actual increase of $ 65 million . answer : c .
medmcqa
medmcqa_05_03558
Least useful treatment of local anaesthetic induced convulsions –
[ "Phenytoin", "Thiopentone", "Midazolam", "Propofol" ]
A
Drugs used for LA induced seizure :- Benzodiazepines (midazolam), Barbiturates (thiopentone), Propofol.
medmcqa
medmcqa_05_04611
A 30 years old lady presents to a physician with complaints of hematuria. On evaluation, RBCs were found in the urine but no cause is found on further enquiry it is found that she has gone to many doctors with the same complaint and demanding in patient care. She pricks her finger and mixes blood in the urine sample. H...
[ "Malingering", "Factitious illness", "Dissociative disorder", "Hypochondriasis" ]
B
Information in this question are: - Patient is maintaining sick role There is intentional production of physical sign (Pricks her finger and mixes blood in urine sample). Multiple doctor visit Distortion of investigation No motive has been mentioned other than obtaining medical attention. Diagnosis is factitious di...
openbookqa
obqa_02_04766
Which is loudest?
[ "a soft kiss", "a flea fart", "a whisper", "a motor" ]
D
matter vibrating can cause sound
openbookqa
obqa_02_02716
Where could you most likely jump to the top of a mountain?
[ "near the equator", "on the moon", "near the sea", "in a laboratory" ]
B
the surface of the Moon contains mountains
openbookqa
obqa_02_04026
Bringing a stray cat to your home to live will be hard for it at first, but since animals adapt, it will
[ "fly away", "go to space", "get acclimated", "breathe underwater" ]
C
animals adapt to their environment
openbookqa
obqa_02_00259
Animals may relocate to a new environment if their old environment
[ "experienced a large hurricane", "experienced a serious thunderstorm", "had a few arid days", "had little rainfall for a week" ]
A
natural disasters can cause animals to leave an environment
math_qa
mathqa_03_00536
if a student loses 5 kilograms , he will weigh twice as much as his sister . together they now weigh 104 kilograms . what is the student ' s present weight in kilograms ?
[ "70", "71", "72", "73" ]
B
"let x be the weight of the sister . then the student ' s weight is 2 x + 5 . x + ( 2 x + 5 ) = 104 3 x = 99 x = 33 kg then the student ' s weight is 71 kg . the answer is b ."
sciq
sciq_01_09653
The tendency of an object to resist a change in its motion is called what?
[ "isolation", "stabilization", "inertia", "kenetic force" ]
C
Inertia is the tendency of an object to resist a change in its motion. All objects have inertia, whether they are stationary or moving. Inertia explains Newton’s first law of motion, which states that an object at rest will remain at rest and an object in motion will stay in motion unless it is acted on by an unbalance...
ARC-Challenge
arc_04_02448
All of these are examples of the ways Earth and the Moon interact except
[ "the phases of the Moon.", "the tides on Earth.", "seasons on Earth.", "lunar eclipses." ]
C
null
sciq
sciq_01_09917
Does pressure increase or decrease when gas particles heat up?
[ "decreases", "stays constant", "increase", "stagnates" ]
C
Like a gas, plasma lacks a fixed volume and shape. Unlike a gas, it can conduct electricity and respond to magnetism.
ARC-Easy
arc_04_00094
Which interaction within an ecosystem is characterized by gradual change from one community of organisms to another?
[ "symbiosis", "food webs", "energy pyramids", "succession" ]
D
null
sciq
sciq_01_10360
It was not until the era of the ancient greeks that we have any record of how people tried to explain the chemical changes they observed and used. at that time, natural objects were thought to consist of only four basic elements: earth, air, fire, and this?
[ "water", "soul", "grass", "sky" ]
A
It was not until the era of the ancient Greeks that we have any record of how people tried to explain the chemical changes they observed and used. At that time, natural objects were thought to consist of only four basic elements: earth, air, fire, and water. Then, in the fourth century BC, two Greek philosophers, Democ...