prompt stringlengths 51 646 | completion stringclasses 8 values | source stringclasses 3 values |
|---|---|---|
While still an early fetus, what is the skeleton made of?
A. gel
B. membrane
C. ligament
D. cartilage
Answer: | D | sciq |
What forms the pathway of water and nutrients from roots to leaves and flower?
A. the stamen
B. the stigma
C. the stem
D. the pistil
Answer: | C | sciq |
What proteins span the entire plasma membrane?
A. transmembrane
B. sequence
C. amino acids
D. cytoplasm
Answer: | A | sciq |
Why is blue cheese blue?
A. fermentation
B. artificial dye
C. fungus
D. bacteria
Answer: | C | sciq |
What type of joint are ball-and-socket, hinge, and pivot examples of?
A. fixed
B. retractable
C. artificial
D. movable
Answer: | D | sciq |
Are valence electrons attracted more or less strongly when they are farther from the nucleus?
A. more strongly
B. equally
C. differently
D. less strongly
Answer: | D | sciq |
What do we call the predictable distribution of molecular speeds found in gas of many molecules?
A. burns - boltzmann distribution
B. maxwell-boltzmann distribution
C. kemp - boltzmann distribution
D. mitchell - boltzmann distribution
Answer: | B | sciq |
Name the simple sugar that is a component of starch.
A. Splenda
B. insulin
C. glucose
D. Fructose
Answer: | C | sciq |
What do vertebrates have which invertebrates do not?
A. backbones
B. appendages
C. fangs
D. tails
Answer: | A | sciq |
Occuring throughout the lifespan of the organism, what stages proceed in a certain order?
A. life effectiveness stages
B. life cycle stages
C. yearly stages
D. genetic stages
Answer: | B | sciq |
The fetus is connected to what by a tube called the umbilical cord?
A. Intestines
B. placenta
C. Stomach
D. Fallopian tube
Answer: | B | sciq |
What are most fresh fruits, vegetables, whole grains rich in?
A. calcium
B. cellulose
C. cholesterol
D. magnesium
Answer: | B | sciq |
What term tells you how quickly the angle changes and can occur in either clockwise or counterclockwise directions?
A. shift velocity
B. turning velocity
C. emit velocity
D. angular velocity
Answer: | D | sciq |
What term is used to describe how fast a chemical reaction occurs?
A. reaction rate
B. response time
C. velocity
D. catalysis
Answer: | A | sciq |
What is the term for protists that produce spores, such as the toxoplasm?
A. protozoans
B. spermatozoa
C. sporozoans
D. newborns
Answer: | C | sciq |
Why does neptune's appearance change?
A. the speed of rotation
B. turbulent atmosphere
C. the seasons
D. the changing orbit
Answer: | B | sciq |
Changing levels of what substances partly explain emotional ups and downs in teens?
A. nutrients
B. hormones
C. acids
D. enzymes
Answer: | B | sciq |
What term refers to larger evolutionary changes that result in new species?
A. Microevolution
B. macroevolution
C. Potential evolution
D. substantial evolution
Answer: | B | sciq |
What do you call a lens that causes the light rays to bend away from its axis?
A. diverging lens
B. converging lens
C. axilens
D. optical lens
Answer: | A | sciq |
Diffusion can occur across a semipermeable membrane, such as the cell membrane, as long as a what exists?
A. concentration gradient
B. parity
C. differential
D. polarity
Answer: | A | sciq |
Scientists use what scale to illustrate the order in which events on earth have happened?
A. geologic time scale
B. cataclysmic time scale
C. ecological succession
D. fossil record
Answer: | A | sciq |
What will happen if the gas particles inside an inflated balloon suddenly stop moving?
A. balloon inflates
B. balloon bursts
C. balloon falls
D. balloon deflates
Answer: | D | sciq |
What are the major sites of gibberellin production?
A. soil and leaves
B. young roots and leaves
C. flower and fruit
D. stem and roots
Answer: | B | sciq |
What is required for interconversion between the two forms of an isomeric pair?
A. turn and reforming
B. breaking and reforming
C. couple and reforming
D. fixing and reforming
Answer: | B | sciq |
Bacteria reproduce through what process, where the chromosome copies itself, forming two genetically identical copies?
A. binary fission
B. nuclear fission
C. multiple fission
D. residual fission
Answer: | A | sciq |
Water molecules are polar, so they form what type of bonds?
A. helium
B. hydrogen
C. carbon
D. oxygen
Answer: | B | sciq |
The cecum is the first part of what structure, where wastes in a liquid state enter from the small intestine?
A. duodenum
B. esophagus
C. large intestine
D. appendix
Answer: | C | sciq |
What are the "levels" in a food chain or web called?
A. parts
B. root
C. gauges
D. trophic
Answer: | D | sciq |
Are bones considered living or dead tissues?
A. decaying
B. dead
C. living
D. decomposing
Answer: | C | sciq |
What forms when water in the atmosphere condenses on dust particles suspended in the air?
A. snow
B. wind
C. hail
D. clouds
Answer: | D | sciq |
What are the two types of fermentation?
A. lactic acid and fermaldehyde
B. alcoholic and alchemical
C. lactic acid and alcoholic
D. acetic and anhydrous
Answer: | C | sciq |
Aging occurs as cells lose their ability to do what?
A. join
B. divide
C. grow
D. build
Answer: | B | sciq |
What is it called when liquid water falls from the sky?
A. erosion
B. sedimentation
C. water cycling
D. precipitation
Answer: | D | sciq |
Applying a pressure greater than the osmotic pressure of a solution will do what?
A. reverse osmosis
B. osmosis
C. ultrafiltration
D. normal osmosis
Answer: | A | sciq |
The molecule pictured above is thyroxine, a compound produced by which gland?
A. thyroid
B. stomach
C. gallbladder
D. kidney
Answer: | A | sciq |
Birds generally practice what kind of relationship, with both parents helping to care for the young?
A. carnivorous
B. synonomous
C. monogamous
D. homologous
Answer: | C | sciq |
Gravitropism ensures that roots grow into the soil and that shoots grow toward what?
A. trees
B. the north pole
C. the south pole
D. sunlight
Answer: | D | sciq |
What is the mass of one mole of any given substance?
A. protons mass
B. atomic mass
C. solute mass
D. molar mass
Answer: | D | sciq |
The corona surrounds which major object in our solar system?
A. Jupiter
B. Earth's moon
C. Neptune
D. the sun
Answer: | D | sciq |
Respiration that occurs in the cells is called?
A. plasma respiration
B. biological respiration
C. electromagnetic respiration
D. cellular respiration
Answer: | D | sciq |
Metabolism is an emergent property of life that arises from orderly interactions between what?
A. nutrients
B. body systems
C. molecules
D. tissues
Answer: | C | sciq |
During cellular respiration, carbons from the glucose molecule are changed back into what gas?
A. carbon monoxide
B. carbon dioxide
C. liquid dioxide
D. deformation dioxide
Answer: | B | sciq |
How does the distance between galaxies change as the universe expands?
A. it decreases
B. it becomes irrelevant
C. it is unchanged
D. it increases
Answer: | D | sciq |
Rainwater absorbs carbon dioxide (co 2 ) as it falls. the co 2 combines with water to form what?
A. carbonic acid
B. methane gas
C. nitrate acid
D. carbon monoxide
Answer: | A | sciq |
Most molecular compounds that have a mass similar to water are in what state of matter at room temperature?
A. liquid
B. gas
C. vapor
D. solid
Answer: | B | sciq |
What do you call the movement of molecules across a membrane without the input of energy?
A. obvious transport
B. reactive transport
C. passive transport
D. active transport
Answer: | C | sciq |
Opposite charges attract and like charges do what?
A. rebound
B. repulse
C. nothing
D. impede
Answer: | B | sciq |
What molecules are usually insoluble in water?
A. acids
B. ions
C. non-polar
D. polar
Answer: | C | sciq |
What occurs when there is a sudden discharge of static electricity between a cloud and the ground?
A. updraft
B. rain
C. wind
D. lightning
Answer: | D | sciq |
If citrate accumulates in mitochondria, some of it passes into where and inhibits phosphofructokinase?
A. pores
B. Golgi apparatus
C. cytosol
D. epidermis
Answer: | C | sciq |
For most of a star’s life, hydrogen atoms fuse to form what?
A. gas atoms
B. helium atoms
C. ionic atoms
D. neon atoms
Answer: | B | sciq |
What two ways do channels respond during membrane depolarization?
A. independently and typically
B. independently and sequentially
C. sequentially and identically
D. typically and sequentially
Answer: | B | sciq |
What kind of compound, contained in coffee and alcohol, increases urine volume?
A. diuretic
B. additive
C. acid
D. anabolic
Answer: | A | sciq |
In mammals what does the zona pellucida protect?
A. fetus
B. sperm
C. egg
D. testes
Answer: | C | sciq |
What type of vertebrates control body temperature to just a limited extent from the outside by changing behavior?
A. endothermic
B. mimetic
C. ectothermic
D. etheric
Answer: | C | sciq |
Worldwide, viruses seem to play a role in what percentage of the cases of human cancer?
A. 5%
B. 20 %
C. +.15 %
D. 15%
Answer: | D | sciq |
Elements are pure substances that make up what?
A. Objects
B. Solids
C. some matter
D. all matter
Answer: | D | sciq |
What reproductive part is stored in a plant's pollen?
A. the egg
B. the gamete
C. the mimic
D. the sperm
Answer: | D | sciq |
Atoms of what element ultimately form in a red supergiant?
A. steel
B. iron
C. gold
D. coal
Answer: | B | sciq |
What are the two types of fats?
A. saturated and unsaturated
B. full and empty
C. liquid and solid
D. thick and thin
Answer: | A | sciq |
What structure consists of an outer layer of cells called the trophoblast and an inner cell mass called the embryoblast?
A. blastocyst
B. cytoplasm
C. nucleus
D. cell wall
Answer: | A | sciq |
Metabolic pathways are a series of reactions catalyzed by multiple what?
A. enzymes
B. particles
C. hormones
D. vitamins
Answer: | A | sciq |
What causes eutrophication to occur?
A. excess of decreased and other nutrients
B. excess of fertilizers and other nutrients
C. excess of increased and other nutrients
D. excess of carbonate and other nutrients
Answer: | B | sciq |
What do you call the separation of ions that occurs when a solid ionic compound dissolves?
A. deformation
B. dissociation
C. decomposition
D. dissolution
Answer: | B | sciq |
What is light with wavelengths shorter than visible light called?
A. ultraviolet light
B. weathering light
C. infrared light
D. radio waves
Answer: | A | sciq |
How much distance can beta particles travel through air?
A. centimeters
B. meter
C. inches
D. density
Answer: | B | sciq |
What is created when the warm air at the cold front rises and creates a low pressure cell, causing winds to rush into the low pressure?
A. Hurricane
B. Tornado
C. Wind pressure
D. rising air column
Answer: | D | sciq |
People with osteoporosis have an increase risk of what?
A. cancer
B. muscle loss
C. weight loss
D. bone fractures
Answer: | D | sciq |
What is the main artery of the systematic circulation called?
A. carotid
B. femoral
C. subclavian
D. aorta
Answer: | D | sciq |
The length that an object has travelled in one or multiple directions can also be called what?
A. velocity
B. distance
C. axis
D. range
Answer: | B | sciq |
In animals, what process occurs only in germ cells, which are in the ovaries or testes?
A. electrolysis
B. meiosis
C. reproduction
D. mitosis
Answer: | B | sciq |
Which theory describes the benzene molecule and other planar aromatic hydrocarbon molecules as hexagonal rings of sp2-hybridized carbon atoms with the unhybridized p orbital of each carbon atom perpendicular to the plane of the ring?
A. covalent bond theory
B. molecular orbital theory
C. valence bond theory
D. hybrid orbital theory
Answer: | C | sciq |
What type of carbon dioxide levels have been rising for the past several decades?
A. atmospheric
B. magnetic
C. subatomic
D. aqueous
Answer: | A | sciq |
Freezing rain that falls from the sky is also called?
A. snowfall
B. sleet
C. hail
D. fog
Answer: | B | sciq |
Do waves move faster when particles are close to each other or far away?
A. open
B. close
C. far away
D. unaffected
Answer: | B | sciq |
Adult bees include workers, a queen and what other type?
A. builders
B. drones
C. laborers
D. soldiers
Answer: | B | sciq |
Name the law that determines as to which rock layers are younger or older than others.
A. law of superposition
B. geologic theory
C. law of apposition
D. law of gravity
Answer: | A | sciq |
Since the electric field lines point radially away from the charge, they are perpendicular to what?
A. singularity lines
B. equipotential lines
C. magnetic field lines
D. archetypical lines
Answer: | B | sciq |
What are in leaves that function as solar collectors and food factories?
A. vacuoles
B. fibroblasts
C. chloroplasts
D. cellulose
Answer: | C | sciq |
What is the process of producing eggs in the ovary is called?
A. meiosis
B. oogenesis
C. morphogenesis
D. gametogenesis
Answer: | B | sciq |
What term refers to the deliberate prevention of pregnancy?
A. abortion
B. contraception
C. cessation
D. reproduction
Answer: | B | sciq |
Homologous chromosomes move toward what poles?
A. parallel
B. interior
C. opposite
D. octogonal
Answer: | C | sciq |
Why are the stems of many xerophytes fleshy?
A. stores water
B. drains water
C. pressures water
D. collects water
Answer: | A | sciq |
Most body fluids that you release from your body contain chemicals that kill pathogens. for example, mucus, sweat, tears, and saliva contain enzymes called?
A. sporozoans
B. lipids
C. lysozymes
D. enzymes
Answer: | C | sciq |
What is at the top of the mesosphere?
A. Stratosphere
B. Mesosphere
C. mesopause
D. Troposphere
Answer: | C | sciq |
Yogurt is made from milk fermented with what type of organism?
A. bacteria
B. viruses
C. yeast
D. algae
Answer: | A | sciq |
What happens to an animal's telomeres as it ages?
A. shorten
B. divide
C. lengthen
D. multiply
Answer: | A | sciq |
Characterized by uncontrolled growth, cancerous cells are also called what?
A. toxic
B. malignant
C. benign
D. abnormal
Answer: | B | sciq |
Historically, malaria has rivaled what as the leading cause of human death by infectious disease?
A. tuberculosis
B. cancer
C. heart attack
D. hepatitis
Answer: | A | sciq |
When the number of electrons and the number of protons are equal, the object is what?
A. Positive
B. static
C. neutral
D. Negative
Answer: | C | sciq |
The angle of refraction depends on the index of what?
A. refraction
B. reflection
C. vibration
D. frequency
Answer: | A | sciq |
Systems are in thermal equilibrium when they have the same of what measurement?
A. density
B. oxygen
C. temperature
D. mass
Answer: | C | sciq |
What needs to be increased to change a solid into a liquid or gas?
A. volume
B. temperature
C. pressure
D. oxygen
Answer: | B | sciq |
Minerals that are not compounds consist of a single what?
A. electron
B. proton
C. gas
D. element
Answer: | D | sciq |
What globular protein is used in the construction of the hollow tube?
A. keratin
B. tubulin
C. cyclin
D. actin
Answer: | B | sciq |
Two important types of energy that can be converted to one another include potential and what?
A. kinetic
B. physical
C. magnetic
D. thermal
Answer: | A | sciq |
What is the diffusion of water through a semipermeable membrane according to the concentration gradient of water across the membrane
A. nutrients
B. osmosis
C. Gravity
D. mirrors
Answer: | B | sciq |
What are the key cells of an immune response?
A. erythrocytes
B. keratinocytes
C. histiocytes
D. lymphocytes
Answer: | D | sciq |
Darwin found that, since all species are related to each other and some of them evolve together, so they develop similar what?
A. appearance
B. adaptations
C. language
D. systems
Answer: | B | sciq |
Newly formed what aggregates into threads that form the framework of the clot?
A. fibrin
B. blood
C. collagen
D. plasma
Answer: | A | sciq |
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