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481 values
sciq-10695
multiple_choice
The name of which ion always comes first?
[ "negative ions", "constant ion", "positive ion", "similar ion" ]
C
sciq-51
multiple_choice
What is the name of the small bumps that contain taste buds and covers the tongue?
[ "palatine tonsils", "papillae", "cuticle", "lingual tonsils" ]
B
sciq-784
multiple_choice
What side of a mountain does the rainshadow effect occur on?
[ "due north", "the leeward side", "starboard", "windward" ]
B
sciq-11183
multiple_choice
High per capita use of what means the ecological footprint of the united states is large?
[ "green energy", "money", "resources", "food" ]
C
sciq-7298
multiple_choice
What item starts puberty in girls?
[ "the hypothalamus", "the ovary", "the thyroid", "the uterus" ]
A
sciq-11417
multiple_choice
What is the enlarged tip of the penis called?
[ "outer penis", "angles penis", "testicular point", "glans penis" ]
D
sciq-4083
multiple_choice
Oceans are divided into zones bases on distance from shore and what other factor?
[ "animal species", "temperature", "water depth", "salinity" ]
C
sciq-4586
multiple_choice
Humans create different breeds of organisms using what kind of selection?
[ "natural selection", "artificial selection", "speciation", "biased selection" ]
B
sciq-8787
multiple_choice
What model describes the structure of the plasma membrane as a mosaic of components?
[ "fluid mosaic model", "coolant mosaic model", "sensors mosaic model", "solid mosaic model" ]
A
sciq-378
multiple_choice
An electron possesses both particle and these?
[ "wave properties", "land properties", "shock properties", "surging properties" ]
A
sciq-7418
multiple_choice
The core of a star collapses during what event, forming a neutron star?
[ "spark", "blast", "supernova", "gravitational" ]
C
sciq-5667
multiple_choice
What makes toenails and fingernails hard?
[ "taurine", "keratin", "cellulose", "guanine" ]
B
sciq-8395
multiple_choice
How many additional pairs of appendages do arachnids have?
[ "2", "6", "0", "4" ]
A
sciq-11542
multiple_choice
In grazing, a predator partially eats but does not kill what?
[ "pack", "prey", "time", "predators" ]
B
sciq-1313
multiple_choice
An example of irreversible denaturation of what substance occurs to the liquid albumin when an egg is fried?
[ "liquid", "bacterial", "acids", "protein" ]
D
ai2_arc-267
multiple_choice
The interior of Earth is made up of several physically different layers. The solid layer of Earth that moves over a viscous layer is called the
[ "core.", "crust.", "asthenosphere.", "atmosphere." ]
B
sciq-8779
multiple_choice
The mass lost in mass defect has gone into energy called what?
[ "enthalpy", "binding energy", "momentum", "kinetic energy" ]
B
sciq-4806
multiple_choice
Besides the endocrine system, what other system exerts control over all the organ systems of the body?
[ "circulatory system", "abnormal system", "nervous system", "skeleton system" ]
C
sciq-1269
multiple_choice
What structure consists of an outer layer of cells called the trophoblast and an inner cell mass called the embryoblast?
[ "cytoplasm", "nucleus", "blastocyst", "cell wall" ]
C
sciq-7746
multiple_choice
One of the main features all vetebrates have in common is what?
[ "backbone", "brain", "hard shell", "skeleton" ]
A
scienceQA-8826
multiple_choice
What do these two changes have in common? a slice of banana turning brown burning a marshmallow over a campfire
[ "Both are caused by cooling.", "Both are only physical changes.", "Both are caused by heating.", "Both are chemical changes." ]
D
Step 1: Think about each change. A slice of banana turning brown is a chemical change. The part of the banana in contact with the air reacts with oxygen and turns into a different type of matter. Burning a marshmallow is a chemical change. The heat from the fire causes the type of matter in the marshmallow to change. The marshmallow becomes black and crispy. Step 2: Look at each answer choice. Both are only physical changes. Both changes are chemical changes. They are not physical changes. Both are chemical changes. Both changes are chemical changes. The type of matter before and after each change is different. Both are caused by heating. Burning is caused by heating. But a slice of banana turning brown is not. Both are caused by cooling. Neither change is caused by cooling.
sciq-6970
multiple_choice
Capacitors can be used to filter out low frequencies. for example, a capacitor in series with a sound reproduction system rids it of the 60 hz what?
[ "echo", "hum", "white noise", "vibration" ]
B
scienceQA-7779
multiple_choice
What do these two changes have in common? peeling a banana carving a piece of wood
[ "Both are only physical changes.", "Both are caused by cooling.", "Both are chemical changes.", "Both are caused by heating." ]
A
Step 1: Think about each change. Peeling a banana is a physical change. The peel is not covering the rest of the fruit anymore. But both the peel and the banana are still made of the same type of matter as before. Carving a piece of wood is a physical change. The wood changes shape, but it is still made of the same type of matter. Step 2: Look at each answer choice. Both are only physical changes. Both changes are physical changes. No new matter is created. Both are chemical changes. Both changes are physical changes. They are not chemical changes. Both are caused by heating. Neither change is caused by heating. Both are caused by cooling. Neither change is caused by cooling.
sciq-10031
multiple_choice
What is aggravated by practices such as logging, mining, construction, and paving surfaces?
[ "soil erosion", "global warming", "seismic activity", "water pollution" ]
A
sciq-8758
multiple_choice
What is the study of the vital statistics of populations and how they change over time?
[ "demography", "ethnography", "sociology", "anthropology" ]
A
ai2_arc-184
multiple_choice
Which of these best describes how the surface of a beach is formed?
[ "mechanical weathering", "chemical weathering", "mass movement", "volcanic eruption" ]
A
sciq-6740
multiple_choice
Why do viruses not belong to any domain of life?
[ "they are too mature", "they are mortal", "they are nonliving", "they are immortal" ]
C
sciq-4392
multiple_choice
Gases can undergo diffusion, or the opposite, which is what?
[ "effusion", "infusion", "dissipation", "defusion" ]
A
sciq-7043
multiple_choice
What is used as a vector for gene insertion in ex vivo gene therapy?
[ "bacteria", "typhus", "penicillin", "virus" ]
D
sciq-7047
multiple_choice
What is contained in the skin of brightly colored poison dart frogs?
[ "spores", "toxins", "acid", "poison" ]
B
sciq-2185
multiple_choice
In a heterozygote with one dominant and one recessive allele, which is expressed?
[ "dominant atoms", "dominant elements", "dominant allele", "submissive allele" ]
C
sciq-6657
multiple_choice
Beryllium hydride consists of a central beryllium atom with two single bonds to what?
[ "hydrogen atoms", "calcium atoms", "nitrogen atoms", "metabolic atoms" ]
A
sciq-11534
multiple_choice
Images in what type of mirror are reversed left and right but not reversed top and bottom?
[ "concave", "virtual", "plane mirror", "convex" ]
C
sciq-3514
multiple_choice
What structure of the body falls between cells and organs in complexity?
[ "muscles", "tissues", "proteins", "molecules" ]
B
sciq-10768
multiple_choice
The sun and all objects held by it's gravity make up the?
[ "solar system", "atmosphere", "milky way", "planet" ]
A
sciq-10161
multiple_choice
What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier?
[ "solid junctions", "fatty junctions", "special junctions", "tight junctions" ]
D
sciq-1067
multiple_choice
An inclined plane is a good example of what kind of machine?
[ "weak", "complex", "simple", "strong" ]
C
sciq-4533
multiple_choice
How is a reaction described when the given conditions favor formation of products?
[ "spontaneous", "fluctuations", "planned", "instantaneous" ]
A
sciq-10257
multiple_choice
Atoms are combined, separated, or rearranged during what?
[ "physical reactions", "spontaneous mutation", "radiation", "chemical reactions" ]
D
sciq-5790
multiple_choice
What is electrons in the highest occupied principal energy level of an atom called?
[ "valence electrons", "shell electrons", "gradient electrons", "non-valence electrons" ]
A
sciq-6217
multiple_choice
Why is respiratory acidosis considered to be problematic?
[ "excess oxygen in blood", "causes suffocation", "causes acid stomach", "excess co2 in blood" ]
D
sciq-7451
multiple_choice
What are considered to be the smallest particles of matter?
[ "cells", "molecules", "ions", "atoms" ]
D
scienceQA-8988
multiple_choice
How long is a parking space?
[ "7 centimeters", "7 meters", "7 millimeters", "7 kilometers" ]
B
The best estimate for the length of a parking space is 7 meters. 7 millimeters and 7 centimeters are too short. 7 kilometers is too long.
ai2_arc-296
multiple_choice
Which of these stars is most similar to the Sun?
[ "the red giant star Arcturus", "the white dwarf star Sirius B", "the main sequence star Alpha Mensae", "the blue supergiant star Rigel" ]
C
sciq-3797
multiple_choice
On a hot, dry day, plants close their stomata to conserve what?
[ "cold", "air", "water", "sunlight" ]
C
sciq-4768
multiple_choice
What is the most common cause of cancer?
[ "poor diet", "technology mutations", "smoking", "cell mutations" ]
D
ai2_arc-690
multiple_choice
A potassium (K) atom has 20 neutrons, 19 protons and 19 electrons. What is the atomic mass of potassium?
[ "19", "20", "38", "39" ]
D
sciq-2396
multiple_choice
Variation in muscle cells gives further insight into some benefits of what type of respiration?
[ "enzymatic", "anaerobic", "natural", "aerobic" ]
B
sciq-740
multiple_choice
What should you let liquid waste do before placing the container in the trash?
[ "evaporate", "generate", "melt", "expand" ]
A
sciq-6383
multiple_choice
Mass and volume are examples of what kind of properties?
[ "extensive properties", "varied properties", "dynamic properties", "exclusive properties" ]
A
sciq-4819
multiple_choice
What is the term for if multiple sperm fuse with an egg?
[ "pollenation", "fraternization", "in vitro fertilization", "polyspermy" ]
D
sciq-2693
multiple_choice
What creates a new seafloor at the mid-ocean ridge?
[ "hurricane", "magma", "glaciers", "earthquake" ]
B
sciq-4246
multiple_choice
The electron beam scans the surface of the sample, usually coated with a thin film of which metal?
[ "gold", "silver", "copper", "platinum" ]
A
sciq-9830
multiple_choice
What organ is the hypothalamus a part of?
[ "Nervous system", "brain", "liver", "heart" ]
B
sciq-6036
multiple_choice
Most amphibians breathe with these as larvae?
[ "nostrils", "pores", "gills", "lungs" ]
C
scienceQA-12346
multiple_choice
Select the fish below.
[ "green chameleon", "goldfish", "fruit bat", "great crested newt" ]
B
A green chameleon is a reptile. It has scaly, waterproof skin. Chameleons eat insects. They use their long, sticky tongues to catch their prey. A fruit bat is a mammal. It has hair and feeds its young milk. Fruit bats eat fruit and drink nectar from flowers. They have special teeth to help them bite through fruit skins. A great crested newt is an amphibian. It has moist skin and begins its life in water. Some newts live in water. Other newts live on land but lay their eggs in water. A goldfish is a fish. It lives underwater. It has fins, not limbs. Goldfish are popular as pets in many countries today. They were first kept as pets by people in ancient China.
sciq-7688
multiple_choice
What happens when when the immune system does not work properly?
[ "stroke", "immunodeficiency", "diabetes", "anemia" ]
B
sciq-9396
multiple_choice
What is the largest object in the solar system?
[ "the sun", "the orbit", "the earth", "jupiter" ]
A
sciq-3155
multiple_choice
What type of mining is used to recover ores that are deeper into earth’s surface?
[ "underwater mining", "explosive mining", "deep mining", "underground" ]
D
sciq-2563
multiple_choice
Zeros that appear in front of all of the nonzero digits are called what?
[ "left-end zeros", "significant digits", "zero sum game", "non-numbers" ]
A
sciq-4855
multiple_choice
Over many generations, the resulting genetic diversity provides valuable raw material for what?
[ "natural selection", "intelligent selection", "coral selection", "characteristic selection" ]
A
sciq-7609
multiple_choice
Although humans require it, what accounts for just one percent of all water on earth?
[ "salt water", "glaciers", "fresh water", "snow" ]
C
sciq-4433
multiple_choice
Where does most natural gas come from?
[ "oceans", "alchemy", "recycled cooking oil", "wells that produce petroleum" ]
D
sciq-8880
multiple_choice
What is absorbed from food waste in the large intestine before it passes out of the body as feces?
[ "dependent water", "distilled water", "excess water", "inactive water" ]
C
sciq-10038
multiple_choice
Hyperparathyroidism results from an overproduction of what?
[ "parathyroid hormone", "elevated hormone", "tharayroid hormone", "inhibited hormone" ]
A
sciq-2191
multiple_choice
What three things do animals require in order to survive?
[ "Immunity, blood, water", "Shelter, Food and love", "air, water, food", "Sex, Love, Food" ]
C
sciq-10005
multiple_choice
Which action of the stomach helps chemical digestion by gastric juice?
[ "chewing", "peristalsis", "contraction", "churning action" ]
D
sciq-703
multiple_choice
Many of the protist species classified into the supergroup excavata are asymmetrical, single-celled organisms with a feeding groove “excavated” from one side. this supergroup includes heterotrophic predators, photosynthetic species, and these?
[ "reptiles", "insects", "parasites", "mammals" ]
C
sciq-242
multiple_choice
A system in what state cannot spontaneously change, and therefore can do no work?
[ "balance", "stability", "equality", "equilibrium" ]
D
sciq-1296
multiple_choice
Characterized by uncontrolled growth, cancerous cells are also called what?
[ "toxic", "malignant", "abnormal", "benign" ]
B
sciq-8643
multiple_choice
What branch of science is the study of matter and energy?
[ "physical science", "negative science", "natural science", "unnatural science" ]
A
sciq-9777
multiple_choice
What connects the peripheral nervous system to the central nervous system?
[ "wires", "fibers", "veins", "nerves" ]
D
sciq-6320
multiple_choice
The boiling points of liquid also correlate to the strength of which forces?
[ "centrifugal", "supramolecular", "intermolecular", "gravitational" ]
C
sciq-10422
multiple_choice
What term describes a disease in which the immune system attacks the body’s own cells?
[ "autoimmune", "inflammatory", "acute", "contagious" ]
A
sciq-819
multiple_choice
What type pf mining is used to obtain mineral ores that are near the surface?
[ "core mining", "multi-layered mining", "function mining", "surface mining" ]
D
sciq-11660
multiple_choice
What is the first part of the large intestine called?
[ "jejunum", "duodenum", "colon", "cecum" ]
D
sciq-9369
multiple_choice
Seawalls and breakwaters are built parallel to what?
[ "center-point", "shore", "ocean base", "the deep" ]
B
sciq-9228
multiple_choice
Maintaining a balance inside the body or cells of organisms is known as?
[ "homeostasis", "equanimity", "consciousness", "ketosis" ]
A
sciq-1648
multiple_choice
How many different ways can molecules pass through a phospholipid membrane?
[ "five", "three", "six", "four" ]
B
sciq-10655
multiple_choice
What is the rate at which a specific allele appears within a population called?
[ "allele commonness", "trait frequency", "allele rarity", "allele frequecy" ]
D
ai2_arc-478
multiple_choice
Which items are needed to create a simple circuit?
[ "wire and switch", "wire and battery", "light bulb and switch", "light bulb and battery" ]
B
sciq-5427
multiple_choice
What two ways may catalyst be classified?
[ "oxygenated or heterogenous", "fast or slow", "reactive or nonreactive", "homogeneous or heterogeneous" ]
D
sciq-11490
multiple_choice
What is reduced and forms part of the gelatinous disks sandwiched between the vertebrae in humans?
[ "the pelvis", "the notochord", "the clavicle", "the sacrum" ]
B
sciq-8307
multiple_choice
How is blood supplied from the mother to the fetus?
[ "vagina", "brain stem", "umbilical cord", "spinal cord" ]
C
sciq-10102
multiple_choice
What are the tiny sacs in the lungs where gas exchange takes place?
[ "alveoli", "cilia", "bronchi", "ganglion" ]
A
sciq-5597
multiple_choice
Which types of muscles cause bones to move when they retract?
[ "working muscles", "skeletal muscles", "bone muscles", "active muscles" ]
B
ai2_arc-199
multiple_choice
Which part of an atom occupies the majority of the volume?
[ "nucleus", "protons", "neutrons", "electrons" ]
D
sciq-11503
multiple_choice
What is the force pushing a rocket called?
[ "momentum", "friction", "thrust", "direction" ]
C
sciq-5465
multiple_choice
Ionic compound atoms of various elements gain or lose electrons to?
[ "become ions", "flatten ions", "produce ions", "expel ions" ]
C
sciq-3223
multiple_choice
What bonds form because they give atoms a more stable arrangement of electrons?
[ "Ionic bond", "Hydrogen bond", "covalent", "Polar bond" ]
C
ai2_arc-651
multiple_choice
A student boils 100 grams of water to form water vapor (gas). What method should the student use to determine that the mass of the water vapor is equal to 100 grams?
[ "measuring the amount of water vapor (gas) in the air", "collecting the water vapor (gas) and cooling it back to a liquid", "weighing the beaker before and after the water is boiled", "comparing the temperature of the boiling water to the temperature of the water vapor (gas)" ]
B
ai2_arc-647
multiple_choice
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 ball forward was 0.5 seconds. What was the average acceleration of the bowling ball during her forward swing?
[ "2.4 m/s^2", "6.0 m/s^2", "11.5 m/s^2", "24.0 m/s^2" ]
D
sciq-6032
multiple_choice
Most arthropods are insects. the phylum also includes spiders, centipedes, and what?
[ "crustaceans", "coral", "amphibians", "crystals" ]
A
sciq-7586
multiple_choice
The word science is derived from what latin word?
[ "scentia", "sceria", "scitifica", "scefitana" ]
A
sciq-1182
multiple_choice
What kind of diagrams can be used to illustrate electron movements and ion formation?
[ "atomic models", "venn diagrams", "contour maps", "electron dot diagrams" ]
D
ai2_arc-229
multiple_choice
A pharmaceutical company has published the results of a limited experiment investigating the protective value of a chemical compound against high doses of UV rays on skin cells. It was later discovered that the results were not reproducible. What action could the company researchers have taken to avoid publishing erroneous results?
[ "Perform multiple trials.", "Use only low levels of radiation.", "Use different wavelengths of radiation.", "Look into results of similar experiments before forming a hypothesis." ]
A
ai2_arc-803
multiple_choice
Which of the following substances can be separated into several elements?
[ "nitrogen", "zinc", "air", "aluminum" ]
C
sciq-8590
multiple_choice
The adult cells that form the butterfly begin growing in what developmental stage?
[ "embryo", "caterpillar", "pupa", "mitochondria" ]
A
sciq-4402
multiple_choice
What are seeds plants that produce naked seeds in cones called?
[ "lipids", "angiosperms", "gymnosperms", "cytoplasm" ]
C
sciq-9009
multiple_choice
Each atom has a required number of what?
[ "accretion bonds", "acceleration bonds", "covalent bonds", "matrix bonds" ]
C