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481 values
sciq-10899
multiple_choice
A perfectly inelastic collision reduces internal kinetic energy to the minimum it can have while still conserving what?
[ "elements", "heat", "momentum", "energy" ]
C
sciq-9888
multiple_choice
Partially decayed remains of plants and animals form the organic portion of what?
[ "soil", "nutrients", "minerals", "grasses" ]
A
sciq-8133
multiple_choice
All combustion reactions are what type of reactions?
[ "flammable", "geothermal", "reversible", "exothermic" ]
D
sciq-5942
multiple_choice
What's the name for the process where pollen is transferred to the ovules of a seed plant?
[ "condensation", "hibernation", "pollination", "combination" ]
C
sciq-3213
multiple_choice
Which organ is a wide tube connecting the small intestine with the anus?
[ "rectum", "stomach", "jejunum", "large intestine" ]
D
sciq-9680
multiple_choice
From where have the earliest ocean plants thought to have evolved?
[ "simple coral ancestor", "simple alga ancestor", "green pepinia ancestor", "green alga ancestor" ]
D
sciq-103
multiple_choice
What are the long, thin protein extensions in most prokaryotic cells called?
[ "neutrons", "analyte", "flagellum", "cingulum" ]
C
sciq-665
multiple_choice
Biotechnology is the use of biological agents for technological advancement. what two areas are the primary applications of this technology used?
[ "medicine and architecture", "medicine and philosophy", "medicine and psychology", "medicine and agriculture" ]
D
sciq-4751
multiple_choice
Melting, sublimation, and evaporation absorb what from their surroundings?
[ "moisture", "cold", "vibration", "heat" ]
D
sciq-1473
multiple_choice
Dna replication, chromosome segregation, and the separation into two daughter cells are steps in what process?
[ "nuclear fission", "multiple fission", "reproductive fission", "binary fission" ]
D
sciq-2929
multiple_choice
What kind of bases completely dissociate in water, releasing all hydroxide anions into the solution?
[ "weak", "whole", "strong", "unusual" ]
C
sciq-3253
multiple_choice
What force opposes a motion of a moving body? for example a car breaking on a road.
[ "vibration", "thermal", "friction", "tension" ]
C
sciq-6849
multiple_choice
The oxidation of an alcohol can produce either an aldehyde or what?
[ "ester", "amine", "enzyme", "ketone" ]
D
sciq-5097
multiple_choice
What is the plasma membrane formed by?
[ "single lipid layer", "a phospholipid bilayer", "a cytoplasm bilayer", "cholesterol byproduct" ]
B
sciq-668
multiple_choice
What are telescopes that use lenses to bend light called?
[ "layering telescopes", "reflecting telescopes", "sliding telescopes", "refracting telescopes" ]
D
sciq-14
multiple_choice
What is controlled by regulatory proteins that bind to regulatory elements on dna?
[ "amino acids", "mRNA", "gene transcription", "substance transcription" ]
C
sciq-9002
multiple_choice
What is the science of how living things interact with each other and their environment?
[ "ecology", "zoology", "compatibility", "biology" ]
A
sciq-8268
multiple_choice
When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the what?
[ "electron shell", "mixture", "solid", "gas" ]
C
sciq-9073
multiple_choice
One of the earliest air pumps was made by?
[ "Isaac Newton", "Galileo", "robert boyle", "Niels Bohr" ]
C
sciq-9019
multiple_choice
What is idefined as the mass of a substance divided by its volume?
[ "length", "density", "weight", "height" ]
B
sciq-9927
multiple_choice
Polarization occurs between a charged and what other object?
[ "motionless", "neutral", "molecular", "obsolete" ]
B
sciq-3417
multiple_choice
How many chambers does an amphibian heart have?
[ "one", "four", "two", "three" ]
D
sciq-2815
multiple_choice
What is the term for the movement of substances due to random thermal molecular motion?
[ "Transfusion", "condensation", "convection", "diffusion" ]
D
sciq-5156
multiple_choice
What model postulates that electrons orbit the nucleus at fixed energy levels?
[ "atomic model", "coreolis", "Newton's model", "bohr" ]
D
sciq-5834
multiple_choice
What is friction that acts on objects that are moving through a fluid?
[ "fluid catalyst", "fluid friction", "fluid temperature", "mass friction" ]
B
sciq-11360
multiple_choice
What is the tiny male gametophyte enclosed in a tough capsule?
[ "pollen", "calcium", "Cell Capsule", "nitrogen" ]
A
sciq-1342
multiple_choice
Which group of species is defined as having moist skin without scales?
[ "mammals", "fish", "reptiles", "amphibians" ]
D
sciq-10293
multiple_choice
Ethylene, gibberellins, cytokinins, absciscic acid, and auxins are examples of what?
[ "animal proteins", "plant hormones", "insect hormones", "animal hormones" ]
B
sciq-7892
multiple_choice
What type of simple machine is a seesaw an example of?
[ "lever", "single", "steam", "power" ]
A
sciq-5152
multiple_choice
What kind of metals have perplexing patterns of electron distribution that don’t always follow the electron filling rules?
[ "variating", "transition", "transformation", "solution" ]
B
sciq-4072
multiple_choice
Who coined the term natural selection?
[ "shaw", "Mendel", "Pasteur", "darwin" ]
D
sciq-4201
multiple_choice
What is the study of forces in equilibrium?
[ "law of inertia", "genomics", "law of conservation", "statics" ]
D
sciq-768
multiple_choice
What is formed when a subducting plate flows under another tectonic plate?
[ "volcanic arc", "magma", "fault line", "boundary plate" ]
A
sciq-8251
multiple_choice
Which antibacterial protein is found in tears and saliva?
[ "amino acid", "human growth hormone", "human lysozyme", "dopamine" ]
C
sciq-9184
multiple_choice
A can of warm soda will fizz more because increasing the temperature decreases the what of a gas?
[ "solubility", "viscosity", "Acidity", "humidity" ]
A
sciq-4954
multiple_choice
What are the most common types of compounds found on earth?
[ "carbon-based compounds", "sodium - based compounds", "hydrogen-based compounds", "ionic compounds" ]
A
sciq-4289
multiple_choice
What gases move in and out of blood during gas exchange?
[ "oxygen, carbon dioxide", "oxygen, carbon monoxide", "oxygen, nitrogen", "nitrogen, carbon dioxide" ]
A
sciq-8780
multiple_choice
What is used for the fermentation process that makes beer, wine, and bread?
[ "fungi", "yeast", "barley", "whey" ]
B
scienceQA-334
multiple_choice
Which organ controls what the body's organs do?
[ "skin", "lungs", "brain", "heart" ]
C
sciq-2164
multiple_choice
What are most stis caused by?
[ "vaccines", "bacteria", "parasites", "viruses" ]
B
scienceQA-11367
multiple_choice
Select the reptile.
[ "humpback whale", "gray tree frog", "green iguana", "California toad" ]
C
A gray tree frog is an amphibian. It has moist skin and begins its life in water. There are many kinds of tree frogs. Most tree frogs are very small. They can walk on thin branches. A California toad is an amphibian. It has moist skin and begins its life in water. Toads do not have teeth! They swallow their food whole. A humpback whale is a mammal. It has hair and feeds its young milk. Whales are mammals that live in the ocean. Humpback whales have small hairs that grow from bumps around their mouth. A green iguana is a reptile. It has scaly, waterproof skin. Iguanas are a type of lizard. Iguanas eat plants and fruit.
sciq-6268
multiple_choice
What kind of tests may detect substances associated with particular disorders?
[ "biochemical", "genetic", "hormonal", "electrical" ]
A
sciq-5296
multiple_choice
What is the type of cell division that produces gametes?
[ "electrolysis", "budding", "mitosis", "meiosis" ]
D
sciq-1273
multiple_choice
What is light with wavelengths shorter than visible light called?
[ "infrared light", "weathering light", "ultraviolet light", "radio waves" ]
C
sciq-4516
multiple_choice
Anything that has mass and takes up space is considered what?
[ "power", "energy", "light", "matter" ]
D
sciq-6501
multiple_choice
Instruments that measure the angle of the slope of a volcano are called what?
[ "tilt meters", "aberration meters", "angle meters", "velocity meters" ]
A
sciq-2562
multiple_choice
Where do plates move apart in oceans and on land?
[ "volcanic ridges", "unsettled plate boundaries", "coastal zones", "divergent plate boundaries" ]
D
sciq-279
multiple_choice
Muscles that position the pectoral girdle are located either on the anterior thorax or on this?
[ "inferred thorax", "posterior thorax", "posterior thorax", "analogous thorax" ]
B
sciq-4065
multiple_choice
What eukaryotic organisms cannot make their own food and do not technically eat?
[ "plankton", "fungi", "cells", "proteins" ]
B
sciq-10729
multiple_choice
Which continent is covered with an ice cap?
[ "australia", "antarctica", "asia", "greenland" ]
B
sciq-8214
multiple_choice
Yeasts are single-celled fungi. about 1,000 species are recognized, but the most common species is saccharomyces cerevisiae, which is used in this?
[ "cookie making", "potatoes making", "cake making", "bread making" ]
D
sciq-5462
multiple_choice
What are the only organelles that prokaryotic cells have?
[ "chloroplasts", "fibroblasts", "ribosomes", "nuclei" ]
C
sciq-2018
multiple_choice
Natural selection cannot create new variations in organisms - these new variations must be created by what, which are usually associated with some sort of abnormality?
[ "radiation", "mutation", "infection", "pollution" ]
B
sciq-1109
multiple_choice
Fish and other aquatic organisms use gills to capture dissolved what?
[ "oxygen", "nitrogen", "food", "sulfur" ]
A
sciq-3088
multiple_choice
Minerals that are not pure elements are made of what?
[ "isotopes", "noble gases", "chemical compounds", "metalloids" ]
C
sciq-10400
multiple_choice
What is a controlled scientific test that often takes place in a lab?
[ "a testing", "an experiment", "a viewing", "an observeration" ]
B
sciq-2746
multiple_choice
The motion of molecules in a gas is random in magnitude and direction for individual molecules, but a gas of many molecules has a predictable distribution of what, which is called the maxwell-boltzmann distribution?
[ "molecular size", "molecular shape", "molecular rate", "molecular speeds" ]
D
sciq-3053
multiple_choice
Air is said to reach what point, a term used by meteorologists, when humidity increases or temperature decreases?
[ "its dew point", "its dip point", "freezing point", "bubble point" ]
A
sciq-4839
multiple_choice
In which type of cells are most organelles not found?
[ "endoplasmic cells", "heterogeneous cells", "prokaryotic cells", "eukaryotic cells" ]
C
sciq-5851
multiple_choice
What term refers to a change in species over time?
[ "mutation", "generation", "evolution", "spontaneous change" ]
C
sciq-804
multiple_choice
What is a sheet of muscle that spreads across the bottom of the rib cage?
[ "diagram", "diaphragm", "cartilage", "thorax" ]
B
sciq-5752
multiple_choice
What is one method to observe nebulae?
[ "microscope", "telescope", "kaleidoscope", "mirror" ]
B
sciq-4481
multiple_choice
Most flowers carry both stamens and carpels; however, a few species are capable of what and are nicknamed "perfect" flowers?
[ "cloning", "germination", "self-pollination", "sexual reproduction" ]
C
scienceQA-3403
multiple_choice
What do these two changes have in common? tearing a piece of paper shaking up salad dressing
[ "Both are caused by cooling.", "Both are only physical changes.", "Both are chemical changes.", "Both are caused by heating." ]
B
Step 1: Think about each change. Tearing a piece of paper is a physical change. The paper tears into pieces. But each piece is still made of paper. Shaking up salad dressing is a physical change. The different parts mix together, but they are 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-8969
multiple_choice
What type of sedimentary rocks are made of minerals that precipitate from saline water?
[ "sandstone", "chemical sedimentary rocks", "limestone", "shale" ]
B
sciq-3003
multiple_choice
In how many basic was can substances cross the plasma membrane?
[ "two", "three", "one", "four" ]
A
sciq-5846
multiple_choice
Sickle cell diseas is caused by what?
[ "posterior allele", "receccisve allele", "bronchiole allele", "anterior allele" ]
B
sciq-3741
multiple_choice
What includes all the biotic and abiotic factors in an area and how they interact?
[ "ecosystem", "habitat", "biome", "tundra" ]
A
sciq-5513
multiple_choice
The zoospores develop into haploid, multicellular male and female gametophytes, which produce?
[ "microorganisms", "spores", "gametes", "toxins" ]
C
sciq-9980
multiple_choice
What occurs when the bronchioles swell and the muscles around the bronchioles contract?
[ "bronchitis", "allergies", "asthma", "nausea" ]
C
sciq-5497
multiple_choice
What process that begins in utero during fetal development and continues on into adolescence involves closing of the skull?
[ "elongation", "ossification", "calcification", "incubation" ]
B
sciq-9696
multiple_choice
What trimester is associated with rapid fetal growth?
[ "fourth trimester", "second trimester", "first trimester", "third trimester" ]
D
sciq-762
multiple_choice
Peregrine falcons made an incredible recovery after laws were passed banning the use of what?
[ "Acetamiprid", "Carbaryl", "miticide", "ddt" ]
D
sciq-5062
multiple_choice
Within the chloroplast, synthesis of what takes place in the fluid inside the inner membrane called the stroma?
[ "wheat", "fructose", "glucose", "sugar" ]
D
scienceQA-9723
multiple_choice
Select the solid.
[ "oxygen", "caramel sauce", "ballet shoes", "coffee" ]
C
Caramel sauce is a liquid. A liquid takes the shape of any container it is in. If you pour caramel sauce into a container, the caramel sauce will take the shape of that container. But the caramel sauce will still take up the same amount of space. A ballet shoe is a solid. A solid has a size and shape of its own. When a dancer wears a ballet shoe, it may bend a little. But the ballet shoe still has a size and shape of its own. Coffee is a liquid. A liquid takes the shape of any container it is in. If you pour coffee into a different container, the coffee will take the shape of that container. But the coffee will still take up the same amount of space. Oxygen is a gas. A gas expands to fill a space. Oxygen can be stored in metal tanks. If oxygen leaks out of the tank, the oxygen will expand into the space around the tank.
sciq-7316
multiple_choice
The atoms of a compound are held together by what type of bonds?
[ "mineral", "covalent", "radiation", "chemical" ]
D
sciq-381
multiple_choice
When a predator kills and eats its prey, what sort of predation is this referred to as?
[ "true", "false", "predestined", "just" ]
A
sciq-6058
multiple_choice
Electromagnetic waves transfer energy across space as well as through what?
[ "matter", "plasma", "filtering", "osmosis" ]
A
sciq-7317
multiple_choice
Unlike energy, what happens to matter in ecosystems?
[ "it is destroyed", "it is recycled", "it is filtered", "it does not exist" ]
B
sciq-2891
multiple_choice
The sticky stigma at the tip of the carpel receives what?
[ "nitrogen", "bacteria", "salt", "pollen" ]
D
sciq-7555
multiple_choice
Why are seeds of a pine cone easily carried by the wind and dispersed?
[ "seeds are sticky", "seeds have wings", "seeds are dense", "seeds are small" ]
B
sciq-1117
multiple_choice
In vertebrates, what structure runs from the brain to the tail end of the backbone?
[ "aortic valve", "spinal cord", "ribcage", "backbone" ]
B
sciq-1227
multiple_choice
What do you call a lens that causes the light rays to bend away from its axis?
[ "optical lens", "diverging lens", "converging lens", "axilens" ]
B
sciq-9886
multiple_choice
Unevenness or asymmetry in the focus of the eye describes what visual defect?
[ "myopia", "hyperopia", "presbyopia", "astigmatism" ]
D
sciq-4651
multiple_choice
In a ketone, two of which kind of groups are attached to the carbonyl carbon atom?
[ "nitrogen groups", "ions", "oxygen groups", "carbon groups" ]
D
sciq-2439
multiple_choice
What is the shortest phase of the sexual response cycle?
[ "sexual stimulation", "resolution phase", "the orgasm", "plateau phase" ]
C
sciq-7329
multiple_choice
Metals, metalloids, and nonmetals are the different classes of what?
[ "elements", "compounds", "structures", "ions" ]
A
sciq-6753
multiple_choice
What force is perpendicular to velocity and causes uniform circular motion?
[ "centripetal force", "centripetal torque", "tangential force", "circular friction" ]
A
sciq-11288
multiple_choice
What done ozone help protect against?
[ "helium rays", "ultraviolet rays", "x-rays", "gamma rays" ]
B
sciq-2546
multiple_choice
Consisting of a stigma, style, and ovary, the pistil of a flower is what type of organ?
[ "female immune organ", "female respiratory organ", "female neural organ", "female reproductive organ" ]
D
sciq-11210
multiple_choice
In the nematic phase, only the long axes of the molecules are parallel, and the ends are staggered at random intervals. in the smectic phase, the long axes of the molecules are parallel, and the molecules are also arranged in planes. finally, in thecholesteric phase, the molecules are arranged in layers; each layer is rotated with respect to the ones above and below it to give it this?
[ "symmetry", "layer structure", "kinetic energy", "spiral structure" ]
D
sciq-9988
multiple_choice
Both fats and oils are made up of long chains of carbon atoms that are bonded together. what are these chains called?
[ "amino acids", "fatty acids", "nucleic acids", "metabolic acids" ]
B
sciq-2292
multiple_choice
What is the purpose of utilizing careful farming practices such as rotating crops or planting nutrient rich crops?
[ "improve sediment quality", "improve photosynthesis quality", "improve soil texture", "improve soil quality" ]
D
sciq-7426
multiple_choice
Love canal was an infamous example of what type of pollution?
[ "industrial waste dumping", "Land Pollution", "thermal pollution", "Visual Pollution" ]
A
ai2_arc-449
multiple_choice
Electricity has many uses. Which device is designed to transform electrical energy into useful heat energy?
[ "a clock radio", "an electric stove", "an electric motor", "a battery charger" ]
B
sciq-8618
multiple_choice
What is an alpha particle with two protons and two neutrons called?
[ "helium nucleus", "hydrogen nucleus", "chloride nucleus", "hydrogen nucleus" ]
A
scienceQA-9435
multiple_choice
What do these two changes have in common? water evaporating from a lake cooking a pancake
[ "Both are caused by cooling.", "Both are caused by heating.", "Both are only physical changes.", "Both are chemical changes." ]
B
Step 1: Think about each change. Water evaporating from a lake is a change of state. So, it is a physical change. The liquid changes into a gas, but a different type of matter is not formed. Cooking a pancake is a chemical change. Pancakes are made from pancake batter. A cooked pancake is a different type of matter than pancake batter. Pancake batter is wet and slippery. Cooked pancakes are fluffy and can be good to eat! Step 2: Look at each answer choice. Both are only physical changes. Water evaporating is a physical change. But cooking a pancake is not. Both are chemical changes. Cooking a pancake is a chemical change. But water evaporating from a lake is not. Both are caused by heating. Both changes are caused by heating. Both are caused by cooling. Neither change is caused by cooling.
sciq-6321
multiple_choice
Vitamin d is made in the skin when it is exposed to what?
[ "sunlight", "darkness", "dirt", "water" ]
A
sciq-5394
multiple_choice
Different types of home heating systems all function by producing what type of energy?
[ "thermal", "distinct", "electron", "natural" ]
A
sciq-9655
multiple_choice
There are how many visual clues to indicate a chemical reaction?
[ "three", "seven", "four", "five" ]
C