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7.76k
medmcqa
medmcqa_05_00055
Mucus strings in urine are suggestive of :
[ "Urethritis", "Cystitis", "Prostatitis", "Pyelonephritis" ]
C
Acute prostatitis is a bacterial infection in the prostate gland, most commonly by urinary pathogens. Patients present with fevers, dysuria, and perineal or back discomfo. Chronic prostatitis presents with continued lower urinary tract symptoms and pelvic pain. The urinalysis may be normal. There may be a clear white u...
sciq
sciq_01_06697
What type of power is generated using a nonrenewable resource?
[ "solar power", "water power", "wind power", "nuclear power" ]
D
Chuck Szmurlo (Wikimedia: Cszmurlo). Nuclear power is generated using a nonrenewable resource . CC BY 2.5.
ARC-Easy
arc_04_01595
According to the Big Bang Theory, which element most likely formed first?
[ "carbon dioxide", "hydrogen", "oxygen", "nitrogen" ]
B
null
ARC-Easy
arc_04_00332
The fur of an arctic fox turns from brown to white as winter approaches. This is an example of
[ "camouflage", "hibernation", "migration", "movement" ]
A
null
ARC-Easy
arc_04_00360
Which two activities are carried out by all species of living things?
[ "make food and eliminate waste", "hibernate and take in nutrients", "grow and reproduce", "migrate and seek shelter" ]
C
null
sciq
sciq_01_07690
What type of microscope is used to see extremely small objects?
[ "optical microscope", "X-ray microscope", "ultrasonic microscope", "electron microscope" ]
D
Light microscopes continued to improve and are still used today. However, to see extremely small objects, a different type of microscope, such as an electron microscope, must be used.
sciq
sciq_01_04100
What kind of motion characterizes waves?
[ "round", "bending", "breathing", "repetitive" ]
D
Waves are characterized by their repetitive motion. Imagine a toy boat riding the waves in a wave pool. As the water wave passes under the boat, it moves up and down in a regular and repeated fashion. While the wave travels horizontally, the boat only travels vertically up and down. The Figure below shows two examples ...
ARC-Easy
arc_04_00062
If 1 kg of the compound toluene melts at -95°C, then 500 g of toluene will
[ "melt at -47.5°C.", "melt at -95°C.", "boil at 95°C.", "boil at 47.5°C." ]
B
null
ARC-Easy
arc_04_01348
Which of the following remains constant in Earth's carbon cycle?
[ "the total mass of available carbon", "the way organisms use carbon", "the physical state of carbon-containing molecules", "the molecule in which a particular carbon atom is found" ]
A
null
sciq
sciq_01_04553
Most fungi can reproduce in which 2 ways?
[ "sexually and autonomously", "binary fission and fusion", "asexually and sexually", "sexually and binary fusion" ]
C
The majority of fungi can reproduce both asexually and sexually. This allows them to adjust to conditions in the environment. They can spread quickly through asexual reproduction when conditions are stable. They can increase their genetic variation through sexual reproduction when conditions are changing and variation ...
ARC-Easy
arc_04_02022
What advantage is gained by using radio telescopes as opposed to optical telescopes?
[ "viewed images are clearer", "operation is less complex", "ability to see through clouds and dust", "ability to take up less space" ]
C
null
sciq
sciq_01_05715
What tool is useful for studying the ocean floor because the environment is remote and underwater?
[ "microscope", "scale", "telescope", "sonar" ]
D
Studying the ocean floor is difficult because the environment is so hostile. The seafloor can be studied indirectly with tools such as sonar. It can be studied directly using special vehicles. Some vehicles carry scientists and their devices to the ocean floor. Other vehicles are operated remotely.
sciq
sciq_01_07061
What causes a meteoroid to vaporize after it enters the atmosphere?
[ "friction with atmosphere", "spontaneous combustion", "atmospheric pressure", "gravitational pull" ]
A
A meteoroid is dragged toward Earth by gravity and enters the atmosphere. Friction with the atmosphere heats the object quickly, so it starts to vaporize. As it flies through the atmosphere, it leaves a trail of glowing gases. The object is now a meteor. Most meteors vaporize in the atmosphere. They never reach Earth’s...
sciq
sciq_01_02199
Meiosis and mitosis are both preceded by one round of what?
[ "internal fertilization", "dna replication", "cellular respiration", "germination" ]
B
Figure 11.7 Meiosis and mitosis are both preceded by one round of DNA replication; however, meiosis includes two nuclear divisions. The four daughter cells resulting from meiosis are haploid and genetically distinct. The daughter cells resulting from mitosis are diploid and identical to the parent cell.
ARC-Easy
arc_04_01514
Darwin's theory that animal species can change over time was inspired by his research on which set of islands?
[ "the Philippine Islands", "the Virgin Islands", "the Hawaiian Islands", "the Galapagos Islands" ]
D
null
ARC-Easy
arc_04_01472
Plants in a forest need to obtain nutrients from the soil to survive. How do most of the nutrients get back in the soil once the forest plants have used them for growth?
[ "Organic matter recycles from dead organisms.", "Commercial fertilizers are applied by humans.", "Solar radiation reaches the ground surface.", "Rainwater drips off of living organisms." ]
A
null
ARC-Easy
arc_04_00770
Termites eat wood but cannot digest it. Protozoans live in the termites' stomachs and use enzymes to break down the wood. The digested wood provides nutrition for both the termites and the protozoans. What type of relationship is this?
[ "mutualism", "parasitism", "predation", "commensalism" ]
A
null
math_qa
mathqa_03_02317
sushil got thrice as many marks in english as in science . his total marks in english , science and maths are 115 . if the ratio of his marks in english and maths is 5 : 1 , find his marks in science ?
[ "18", "77", "25", "55" ]
C
"s : e = 1 : 3 e : m = 5 : 1 - - - - - - - - - - - - s : e : m = 5 : 15 : 3 5 / 23 * 115 = 25 answer : c"
medmcqa
medmcqa_05_03959
Most common lesion of the mandible is-
[ "Ameloblastoma", "Squamous cell ca", "Osteosarcoma", "Osteoclastoma" ]
A
"Ameloblastoma is the most common jaw tumour" -- Radiology of head & Neck "Ameloblastoma is the most common tumour of the maxillomandibular region. The mandible is affected in 75% of cases, the maxilla in 25%". -- Oral pathology
sciq
sciq_01_01081
In what system can energy change forms but the total amount of energy stay constant?
[ "open", "closed", "primary", "heterogeneous" ]
B
In a closed system, energy may change forms but the total amount of energy is constant.
math_qa
mathqa_03_04510
for any real number x , the operatoris defined as : ( x ) = x ( 2 − x ) if p + 1 = ( p + 1 ) , then p =
[ "- 2", "0", "1", "2" ]
C
( x ) = x ( 2 − x ) ( p + 1 ) = ( p + 1 ) ( 2 - p - 1 ) = ( 1 - p ) ( p + 1 ) we are given that p + 1 = ( p + 1 ) therefore ( 1 - p ) ( p + 1 ) = ( p + 1 ) or ( p + 1 ) + ( p - 1 ) ( p + 1 ) = 0 ( p + 1 ) ( p - 1 ) = 0 p = - 1 , p = 1 option c
sciq
sciq_01_06619
What occurs when light bends as it passes from one type of matter to another?
[ "resonance", "reflection", "vibration", "refraction" ]
D
Light may be refracted by matter. The light is bent when it passes from one type of matter to another. Refraction of light is similar to refraction of sound waves. You can also read more about refraction of light in the lesson “Optics. ”.
medmcqa
medmcqa_05_01910
Which of the following is not a calcium binding protein?
[ "Calbindin", "Calmodulin", "Troponin", "Clathrin" ]
D
Clathrin (does not bind ca2+) On inside of cell membrane beneath coated pits, latticework of fibrillar protein is present called clathrin Helps in pinocytosis Calbindin Present in brush border of intestinal epithelial cells & transpo Ca+2 into cell cytoplasm Amount of calcium absorption is directly propoional to quanti...
medmcqa
medmcqa_05_03320
Most cardiotoxic anti-cancer drug among the following;
[ "Anthracyclines", "Cyclophosphamide", "Imatinib", "Tamoxifen" ]
A
Anthracyclines (daunorubicin, doxorubicin, epirubicin and idarubicin) can cause severe cardiotoxicity manifesting as dilated cardiomyopathy and arrhythmias. Anthracycline chemotherapeutic agents form free radicals in the myocardium. Their most severe side effect is a cumulative dose related dilated cardiomyopathy. It p...
openbookqa
obqa_02_03532
A shoe seems gold and green at first, then at second glance looks blue and silver. This could be due to
[ "interrogation", "comas", "refractions", "cellulite" ]
C
refraction causes something to look different
medmcqa
medmcqa_05_00637
Carbon monoxide poisoning causes:JIPMER 11; AIIMS 14
[ "Anemic hypoxia", "Histotoxic hypoxia", "Anoxic hypoxia", "Stagnant hypoxia" ]
A
Ans. Anemic hypoxia
sciq
sciq_01_08754
What physical process occurs when large chunks of food are broken down into smaller pieces?
[ "peristalsis", "mechanical digestion", "chemical digestion", "swallowing" ]
B
Mechanical digestion occurs when large chunks of food are broken down into smaller pieces. This is a physical process that happens mainly in the mouth and stomach.
openbookqa
obqa_02_00759
the sun makes rounds around this planet
[ "maybe", "this is wrong", "all of these", "this is true" ]
B
the Earth revolves around the sun
medmcqa
medmcqa_05_04510
Most permeable to pure phospholipid bilayer:-
[ "O2", "Na+", "H2O", "Cl-" ]
A
Movement of hydrophobic molecules/Lipid soluble substances occurs by Simple diffusion Movement of H2O occurs by osmosis Movement of Polar molecules/ions occurs through Channels
math_qa
mathqa_03_03280
a fill pipe can fill 1 / 2 of cistern in 20 minutes . in how many minutes , it can fill 1 / 2 of the cistern ?
[ "5 min", "10 min", "15 min", "20 min" ]
D
required time = 20 * 2 * 1 / 2 = 20 minutes answer is d
openbookqa
obqa_02_03162
Oil platforms originating from a number of oceanic placements can be related to an unintentional release of what?
[ "oil pumps", "nuclear fission", "biological created fuel", "solar energy" ]
C
offshore oil platforms might cause oil to leak into the water
medmcqa
medmcqa_05_03018
Sumatriptan exerts antimigraine action through which receptors?
[ "5HT1D/1B", "5 HT2", "5HT3", "5HT4" ]
A
Ans. is 'a' i.e., 5HT ID/IB * Sumatriptan is the first selective 5-HT1D/1B receptor agonist; activates other subtypes of 5-HT1 receptors only at very high concentrations, and does not interact with 5-HT2, 5-HT3, 5-HT4-7, a or b adrenergic, dopaminergic, cholinergic or GABA receptors.
medmcqa
medmcqa_05_00760
Prevention of disease by immunization comes under which category-
[ "Primordial prevention", "Primary prevention", "Secondary prevention", "Teiary prevention" ]
B
Ans. is 'b' i.e., Primary prevention
sciq
sciq_01_08757
Shield volcanoes often form along which locations?
[ "divergent plate boundaries", "convergent boundaries", "tectonic plates", "fault lines" ]
A
Shield volcanoes often form along divergent plate boundaries. They also form at hot spots, like Hawaii. Shield volcano eruptions are non-explosive.
openbookqa
obqa_02_03163
Echolocation is when animals detect objects by hearing echos using what?
[ "smell", "vision", "sight", "screeching" ]
D
echolocation is when some animals detect objects by hearing echoes by emitting sound
sciq
sciq_01_11038
What causes high winds and monsoon storms in the desert?
[ "moderate spring temperature", "high summer temperature", "low winter temperature", "and-12 summer temperature" ]
B
High summer temperatures on the desert create high winds and monsoon storms. Strong winds in the desert can pick up dust and blow it around. A dust storm known as a haboob ( Figure below ) forms in the downdrafts on the front of a thunderstorm.
openbookqa
obqa_02_00398
To positively affect the environment
[ "cut down trees and shrubs", "drive a gas guzzling car", "use Styrofoam plates and cups", "cultivate dogwoods and oaks" ]
D
planting trees has a positive impact on an ecosystem
math_qa
mathqa_03_00106
if x is an integer such that 1 < x < 9 , 2 < x < 15 , 7 > x > – 1 , 4 > x > 0 , and x + 1 < 5 , then x is
[ "3", "4", "5", "6" ]
A
"1 < x < 9 , 2 < x < 15 , - 1 < x < 7 0 < x < 4 x + 1 < 5 from above : 2 < x < 4 - - > x = 3 . answer : a ."
sciq
sciq_01_01143
Physical features on the earth's surface are known as ______
[ "biospheres", "atmospheres", "diversity", "landforms" ]
D
As we view the land around us we see landforms. Landforms are physical features on Earth’s surface. Landforms are introduced in this section but will be discussed more in later chapters. Constructive forces cause landforms to grow. Lava flowing into the ocean can build land outward. A volcano can be a constructive forc...
sciq
sciq_01_10968
What term is used to describe an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination?
[ "adaptive immunity", "variation immunity", "autoimmunity", "herd immunity" ]
A
The adaptive, or acquired, immune response takes days or even weeks to become established—much longer than the innate response; however, adaptive immunity is more specific to an invading pathogen. Adaptive immunity is an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination. An antig...
sciq
sciq_01_07575
The presence of what stratospheric gas layer decreases the frequency of skin cancer and other damaging effects of ultraviolet radiation?
[ "smog", "plasma", "ozone", "cumulonimbus" ]
C
O 3(g) ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ → O(g) + O 2(g) The reactive oxygen atoms recombine with molecular oxygen to complete the ozone cycle. The presence of stratospheric ozone decreases the frequency of skin cancer and other damaging effects of ultraviolet radiation. It has been clearly demonstrated that chlorofluorocarbons, CFCs...
sciq
sciq_01_06509
How are valuable metabolites recovered?
[ "replication reaction", "reabsorption", "osmosis", "metabolism" ]
B
Flame Cells of Planaria and Nephridia of Worms As multi-cellular systems evolved to have organ systems that divided the metabolic needs of the body, individual organs evolved to perform the excretory function. Planaria are flatworms that live in fresh water. Their excretory system consists of two tubules connected to a...
sciq
sciq_01_09968
If a unit is named after a person it needs to be?
[ "capitalized", "forgotten", "short", "squandered" ]
A
If a unit is named after a person, it is capitalized. So you write “10 Newtons,” or “10 N,” but “10 meters,” or “10 m. ”.
math_qa
mathqa_03_02379
6 friends went to a hotel and decided to pay the bill amount equally . but 5 of them could pay rs . 100 each as a result 6 th has to pay rs . 100 extra than his share . find the amount paid by him .
[ "156", "220", "130", "240" ]
B
"explanation : average amount paid by 5 persons = rs . 100 increase in average due to rs . 120 paid extra by the 6 th men = rs . 100 / 5 = rs . 20 therefore , average expenditure of 6 friends = rs . 100 + rs . 20 = rs . 120 therefore , amount paid by the 6 th men = rs . 120 + rs . 100 = rs . 220 correct option : b"
ARC-Easy
arc_04_00794
Which of the following correctly orders part of a fish's respiratory system from the least complex to most complex?
[ "cells -> gills -> tissues", "cells -> tissues -> gills", "gills -> tissues -> cells", "tissues -> gills -> cells" ]
B
null
medmcqa
medmcqa_05_01869
Heme is synthesized in which pa of the erythroblastic cells?
[ "Golgi complex", "Ribosomes", "Endoplasmic reticulum", "Mitochondrial matrix" ]
D
Heme is synthesized paly in mitochondria and paly in cytoplasm. It is synthesized from glycine and succinyl CoA.
sciq
sciq_01_08051
What are modified leaves that bear sporangia?
[ "neutrophils", "sporozoans", "spines", "sporophylls" ]
D
sciq
sciq_01_02954
What is prosopagnosia?
[ "way blindness", "face blindness", "time blindness", "lack of memory" ]
B
Brain: Prosopagnosia The failures of sensory perception can be unusual and debilitating. A particular sensory deficit that inhibits an important social function of humans is prosopagnosia, or face blindness. The word comes from the Greek words prosopa, that means “faces,” and agnosia, that means “not knowing. ” Some pe...
medmcqa
medmcqa_05_01825
A 22 year old man had a Beef sandwich and Potato salad. He Vomited 2 hours after the meal. What is the probable diagnosis
[ "S. aureus poisoning", "Bacillus cereus poisoning", "Clostridial poisonong", "Helicobacter pylori poisoning" ]
A
Preformed toxin of S. aureus causes nausea within 1-6 hours of ingestion. Common food associated are: Poultry, potato and egg salad.
sciq
sciq_01_10768
The sun and all objects held by it's gravity make up the?
[ "milky way", "atmosphere", "solar system", "planet" ]
C
The Sun and all the objects held by its gravity make up the solar system.
ARC-Easy
arc_04_01915
Fourth graders are planning a roller-skate race. Which surface would be the best for this race?
[ "gravel", "sand", "blacktop", "grass" ]
C
null
medmcqa
medmcqa_05_02880
Drug of choice for psoriasis in pustular psoriasis in pregnancy is?
[ "Methotrexate", "Ciclosporin", "Systemic steroids", "Azathioprine" ]
C
Ans. is 'c' i.e., Systemic steroids * Pustular psoriasis in pregnancy can usually be successfully treated with topical and systemic corticosteroids.
sciq
sciq_01_08047
What forms as a result of decomposition when n2o is heated?
[ "ammonia and nitrogren", "nitrogen and hydrogen", "calcium and oxygen", "nitrogen and oxygen" ]
D
The oxides of nitrogen(III), nitrogen(IV), and nitrogen(V) react with water and form nitrogen-containing oxyacids. Nitrogen(III) oxide, N2O3, is the anhydride of nitrous acid; HNO2 forms when N2O3 reacts with water. There are no stable oxyacids containing nitrogen with an oxidation state of 4+; therefore, nitrogen(IV) ...
ARC-Easy
arc_04_01159
Why do satellites and spacecraft launched from Earth need to reach a specific speed to escape Earth's surface?
[ "to overcome Earth's gravitational force", "to protect equipment from radiation", "to break through the sound barrier", "to avoid Earth's magnetic field" ]
A
null
sciq
sciq_01_08577
What is the special name given to the diffusion of water through the cell membrane?
[ "electrolysis", "hemostasis", "osmosis", "passive transport" ]
C
If a molecule can pass freely through a cell membrane, it will cross the membrane by diffusion ( Figure below ). The inside of the plasma membrane is hydrophobic, so certain molecules cannot easily pass through the membrane. Recall the semipermeable nature of the lipid bilayer. Molecules that cannot easily pass through...
medmcqa
medmcqa_05_00945
Which of the following is an intra-articular tendon
[ "Sartorius", "Semitendinosus", "Anconeus", "Popliteus" ]
D
Popliteus has an intracapsular origin that arises from lateral surface of lateral condyle of femur and from outer margin of lateral meniscus of knee.
sciq
sciq_01_04074
Prosimians are thought to be more similar to the earliest of these?
[ "rodents", "primates", "insects", "fish" ]
B
Primates called prosimians are generally smaller. There are also far fewer of them. Prosimians include lemurs, such as the mouse lemur in Figure above , and lorises. Prosimians are thought to be more similar to the earliest primates.
sciq
sciq_01_04443
Science is a process of knowing about the natural universe through what two actions?
[ "changes and experimentation", "guessing and observing", "thinking and guessing", "observation and experimentation" ]
D
Science is a process of knowing about the natural universe through observation and experiment.
sciq
sciq_01_11032
Changing electric and mnagnetic fields radiate outward when?
[ "particles lose their charge", "firing particles accelerate", "particles multiply", "charged particles accelerate" ]
D
When charged particles accelerate , changing electric and magnetic fields radiate outward. The traveling electric and magnetic fields of an accelerating (often oscillating) charged particle are known as electromagnetic radiation or light.
sciq
sciq_01_03431
What type of vehicles is able to go to the deepest ocean floor?
[ "autonomous controlled airplanes", "all-terrain vehicles", "off road vehicles", "remote-control vehicles" ]
D
Today, remote-control vehicles, called remotely operated vehicles (ROVs) go to the deepest ocean floor. They don’t have any people on board. However, they carry devices that record many measurements. They also collect sediments and take photos.
sciq
sciq_01_03616
What do the external female reproductive structures are collectively referred to?
[ "vulva", "cervix", "endometrium", "Clitoris" ]
A
The external female reproductive structures are referred to collectively as the vulva . They include the labia (singular, labium ), which are the “lips” of the vulva. The labia protect the vagina and urethra, both of which have openings in the vulva.
sciq
sciq_01_05304
Each megasporangium has a single functional one of what?
[ "cocklebur", "spicule", "antispore", "megaspore" ]
D
sciq
sciq_01_07196
Small water bodies often fed by springs are called what?
[ "ponds", "puddles", "oceans", "rivers" ]
A
Ponds are small water bodies often fed by springs.
medmcqa
medmcqa_05_00835
In which of the following condition there is increased level of ammonia in blood?
[ "Ornithine transcarbamoylase deficiency", "Galactosaemia", "Histidinaemia", "Phenyl ketonuria" ]
A
Ans: a (Ornithine transcarbamoylase deficiency) Ref: Vasudevan, 4th ed, p. 170,171,199In ornithine transcarbamoylase deficiency there will be high level of ammonia in blood.Rate limiting step in urea synthesis is formation of carbomoyl phosphate. It is catalysed by carbamoyl phosphate synthetase I.One molecule of ammon...
openbookqa
obqa_02_02045
What does a hand dryer produce?
[ "growth", "money", "carbs", "hotness" ]
D
a hand dryer produces heat
sciq
sciq_01_03721
In scientific terms, average acceleration is the rate at which what changes?
[ "gravity", "direction", "volume", "velocity" ]
D
In everyday conversation, to accelerate means to speed up. The accelerator in a car can in fact cause it to speed up. The greater the acceleration, the greater the change in velocity over a given time. The formal definition of acceleration is consistent with these notions, but more inclusive. Average Acceleration Avera...
openbookqa
obqa_02_01365
Sharks live in a liquid deluged with sodium chloride because it allows them to
[ "form sharknadoes", "have increased buoyancy", "eat people", "star in films" ]
B
the ocean contains large amounts of salt water
medmcqa
medmcqa_05_01739
A 40-years-old female patient presented with recurrent headaches. MRI showed an extra-axial, dural based and enhancing lesion. The most likely diagnosis is:
[ "Meningioma", "Glioma", "Schwannoma", "Pituitary' adenoma" ]
A
Meningioma can present with headaches, seizures, or focal neurologic deficits. On imaging studies they have a characteristic appearance usually consisting of a paially calcified, densely enhancing extra axial tumor arising from the dura. Occasionally they may have a dural tail, consisting of thickened, enhanced dura ex...
openbookqa
obqa_02_00504
If a deer is unable to eat regularly, or only eats that which lacks essential minerals, the deer may
[ "find healthy food", "experience failing health", "fail to gestate", "prepare to mate" ]
B
an animal requires enough nutrients to maintain good health
openbookqa
obqa_02_01555
what is an electrical energy conductor?
[ "plastic", "stone", "plants", "swords" ]
D
metal is an electrical energy conductor
math_qa
mathqa_03_00857
what is the greatest of 3 consecutive integers whose sum is 21 ?
[ "6", "7", "8", "9" ]
C
"the sum of three consecutive integers can be written as n + ( n + 1 ) + ( n + 2 ) = 3 n + 3 if the sum is 24 , we need to solve the equation 3 n + 3 = 21 ; = > 3 n = 18 ; = > n = 6 the greatest of the three numbers is therefore 6 + 2 = 8 answer : c"
openbookqa
obqa_02_00387
a cloudy day may obstruct visibility of which of these?
[ "the screen on a smartphone", "our planet's closest star", "the teacher in the class", "the waitress's name tag" ]
B
cloudy means the presence of clouds in the sky
sciq
sciq_01_08717
What is the term for a structure within the cytoplasm that performs a specific job in the cell?
[ "organelle", "ribosome", "nucleus", "mitochondria" ]
A
Eukaryotic cells also contain other organelles besides the nucleus. An organelle is a structure within the cytoplasm that performs a specific job in the cell. Organelles called mitochondria, for example, provide energy to the cell, and organelles called vacuoles store substances in the cell. Organelles allow eukaryotic...
math_qa
mathqa_03_01012
the perimeter of an equilateral triangle is 45 . if one of the side is the side of an isoceles triangle of perimeter 40 then what is the lenght of base of isoceles triangle .
[ "10 units", "20 units", "30 units", "40 units" ]
A
"base of isoceles triangle is 40 - 15 - 15 = 10 units . answer : a"
sciq
sciq_01_10350
Conifers are the most prevalent type of what plant group?
[ "angiosperms", "gymnosperms", "theropods", "algae" ]
B
There are only about 1,000 living species of gymnosperms, whereas there are hundreds of thousands of living species of angiosperms. Because angiosperms are so numerous and diverse, they are described separately below. Living gymnosperms are typically classified in the divisions described in Table below . Most modern gy...
sciq
sciq_01_10937
Translucent matter is matter that transmits and does what else to light?
[ "scatters", "reflects", "absorbs", "condenses" ]
A
Translucent matter is matter that transmits but scatters light. Light passes through a translucent object but you cannot see clearly through the object because the light is scattered in all directions. The frosted glass doors in the figure are translucent.
sciq
sciq_01_01208
True animals are divided into those with radial versus bilateral styles of what?
[ "magnetic", "molecular", "symmetry", "attracted" ]
C
27.2 Features Used to Classify Animals Organisms in the animal kingdom are classified based on their body morphology and development. True animals are divided into those with radial versus bilateral symmetry. Generally, the simpler and often non-motile animals display radial symmetry. Animals with radial symmetry are a...
sciq
sciq_01_04540
Different interatomic distances produce different lattice what?
[ "qualities", "surfaces", "energies", "weights" ]
C
in which C is a constant that depends on the type of crystal structure; Z+ and Z– are the charges on the ions; and Ro is the interionic distance (the sum of the radii of the positive and negative ions). Thus, the lattice energy of an ionic crystal increases rapidly as the charges of the ions increase and the sizes of t...
ARC-Challenge
arc_04_02774
Laura prepared to roll a bowling ball down a lane. She swung the ball back with her arm. At the top of her backswing, the ball had a velocity of 0 meters per second (m/s). She swung her arm forward to release the ball down the lane. The ball left her hand with a velocity of 12 m/s. The time it took her to swing the bal...
[ "2.4 m/s^2", "6.0 m/s^2", "11.5 m/s^2", "24.0 m/s^2" ]
D
null
sciq
sciq_01_04094
Photosynthesis changes light energy to what type of energy?
[ "radiation", "chemical", "potential", "solar" ]
B
Photosynthesis changes light energy to chemical energy. The chemical energy is stored in the bonds of glucose molecules. Glucose is used for energy by the cells of almost all living things. Plants make their own glucose. Other organisms get glucose by consuming plants (or organisms that consume plants). How do living t...
sciq
sciq_01_02878
Many metals react with acids to produce what gas?
[ "neon", "helium", "hydrogen", "mercury" ]
C
Many metals react with acids to produce hydrogen gas. A certain reaction produces 86.5 L of hydrogen gas at STP. How many moles of hydrogen were produced?.
sciq
sciq_01_05147
An endocrine disease usually involves the secretion of too much or not enough of what?
[ "protein", "neurotransmitter", "hormone", "metabolism" ]
C
Diseases of the endocrine system are relatively common. An endocrine disease usually involves the secretion of too much or not enough hormone. When too much hormone is secreted, it is called hypersecretion . When not enough hormone is secreted, it is called hyposecretion .
openbookqa
obqa_02_00809
Where could you find organic matter?
[ "plastic items", "carbon dioxide", "a rabbit", "table salt" ]
C
an organism is a source of organic matter
medmcqa
medmcqa_05_02484
A newborn has multiple congenital defects owing to dysgenesis of the neural crest. Which of the following cells is most likely to be spared?
[ "Geniculate ganglion cells", "Melanocytes", "Motor neurons", "Parafollicular cells" ]
C
Motor neurons develop from the neural tube, more specifically from the basal plate. Other options (Geniculate ganglion cells,Melanocytes and Parafollicular cells) are derivatives of the neural crest. Derrvatives of the neural crest:
sciq
sciq_01_05971
What unit of measurement determines how far something travels in a given amount of time?
[ "density", "speed", "distance", "volume" ]
B
How fast or slow something moves is its speed . Speed determines how far something travels in a given amount of time. The SI unit for speed is meters per second (m/s). Speed may be constant, but often it varies from moment to moment.
medmcqa
medmcqa_05_03204
Root shape before and after orthodontic treatment with radiographic evidence was first given by:
[ "Kaley and Phillip", "Newman and Proffit", "Ketchman AH", "Malmgren and Levander" ]
A
The risk of severe localized resorption is much greater for maxillary incisors (3% affected versus <1% for all other teeth. Kaley and Phillips reported a 20-fold increase in the risk of severe resorption for maxillary incisors if the roots were forced against the lingual cortical plate during treatment. This is likely ...
sciq
sciq_01_05055
What contracts to move food throughout the gastrointestinal tract?
[ "nerves", "vessels", "muscles", "fluids" ]
C
waves of muscle contractions in the organs of the gastrointestinal tract that keep food moving through the tract.
math_qa
mathqa_03_00730
circular gears p and q start rotating at the same time at constant speeds . gear p makes 10 revolutions per minute and gear q makes 40 revolutions per minute . how many seconds after the gears start rotating will gear q have made exactly 2 more revolutions than gear p ?
[ "4", "8", "10", "12" ]
A
"gear q makes 30 more revolutions each 60 seconds . the time to make 2 = 30 / 15 more revolutions is 60 / 15 = 4 seconds . the answer is a ."
ARC-Easy
arc_04_01948
When the Northern Hemisphere is tilted toward the Sun, what season is occurring in Australia?
[ "fall", "winter", "spring", "summer" ]
B
null
openbookqa
obqa_02_00419
Avoiding the use of fossil fuel is an example of
[ "Liberalism", "Ecosystem Vulnerability", "Conservationism", "Protectionism" ]
C
An example of conservation is not using fossil fuel
medmcqa
medmcqa_05_04530
Nuchal translucency is measured between
[ "8 to 10 weeks", "11 to 14 weeks", "16 to 18weeks", "18 to 20weeks" ]
B
Nuchal translucency represents the maximum thickness of the subcutaneous translucent area between the skin and soft tissue overlying the fetal spine at the back of the neck. It is measured in the sagittal plane between 11 and 14 weeks using precise criteria. Increased NT is seen inChromosomal abnormalitiesGenetic Syndr...
sciq
sciq_01_06539
What types of stimuli control endocrine activity?
[ "pressure and chemical", "temperature and light", "light and pressure", "chemical and neural" ]
D
Role of Endocrine Gland Stimuli Reflexes triggered by both chemical and neural stimuli control endocrine activity. These reflexes may be simple, involving only one hormone response, or they may be more complex and involve many hormones, as is the case with the hypothalamic control of various anterior pituitary–controll...
sciq
sciq_01_05444
Fungi may have both asexual and sexual stages of what?
[ "reproduction", "development", "photosynthesis", "absorption" ]
A
Figure 24.8 Fungi may have both asexual and sexual stages of reproduction.
ARC-Easy
arc_04_00826
Angelo wants to know if the volume of water changes when it freezes. He measures the volume of water in its liquid state and then freezes it. Which tool did Angelo most likely use to measure the volume of the water?
[ "a microscope", "a thermometer", "a balance scale", "a graduated cylinder" ]
D
null
openbookqa
obqa_02_04434
This seed carries food:
[ "rock", "strawberry", "thunder", "water" ]
B
a seed is used for storing food for a new plant
sciq
sciq_01_10446
Which layer is the lithosphere located?
[ "radii layer", "outermost layer", "nearest layer", "eclipses layer" ]
B
Lithosphere and asthenosphere are layers based on physical properties. The outermost layer is the lithosphere . The lithosphere is the crust and the uppermost mantle. In terms of physical properties, this layer is rigid, solid, and brittle. It is easily cracked or broken.
medmcqa
medmcqa_05_03647
A broad flat pelvis is characteristic of :
[ "Gynaecoid type", "Android type", "Anthropoid type", "Platypelloid type" ]
D
Platypelloid type
sciq
sciq_01_10162
Give an example of air pollution while painting indoors.
[ "fuel fumes", "variety fumes", "paint fumes", "gas fumes" ]
C
If you are painting indoors, there are more important concerns than just getting messy. You should also be concerned about breathing in the fumes from the paints. Making sure to get plenty of fresh air while painting is very important. Paint fumes can have serious health effects. Paint fumes are just one example of ind...
sciq
sciq_01_04437
The substances that comprise heterogeneous mixtures can also be separated by what means?
[ "atmospheric", "chemical", "physical", "thermal" ]
C
The substances that comprise heterogeneous mixtures can also be separated by physical means. We will discuss separation techniques in the following lesson.
openbookqa
obqa_02_04848
A person has a cup of coffee in a ceramic cup. The coffee inside of the cup has chilled, so to increase the temperature, the person
[ "puts the cup into the refrigerator", "uses paper towels to wrap the cup in", "sets the cup on an electric dish", "makes the cup better by adding ice" ]
C
a hot plate is a source of heat