prompt
stringlengths 51
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What type of lens and mirrors have a negative focal length?
A. subverging
B. convexing
C. converging
D. diverging
Answer:
|
D
|
sciq
|
What is the formation of organs from the germ layers called?
A. synaptogenesis
B. biosynthesis
C. photosynthesis
D. organogenesis
Answer:
|
D
|
sciq
|
What must two nuclei do for fusion to occur?
A. repel each other
B. collide
C. explode
D. melt
Answer:
|
B
|
sciq
|
What determines the ability of soil particles to bind many nutrients?
A. layer charges
B. surface charges
C. currents charges
D. surface pulses
Answer:
|
B
|
sciq
|
Enthalpy is a measure of the total energy of what kind of system?
A. planetary
B. hypodermic
C. thermodynamic
D. macroscopic
Answer:
|
C
|
sciq
|
In eukaryotes, the new mrna is not yet ready for translation. it must go through more processing before it leaves where?
A. Electrons
B. nucleus
C. protons
D. molecules
Answer:
|
B
|
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|
What term describes the splitting of the nucleus of an atom into two smaller nuclei?
A. nuclean fusion
B. critical fission
C. nuclear fission
D. atomic reaction
Answer:
|
C
|
sciq
|
What type of contamination causes almost 90% of diarrheal disease worldwide?
A. air contamination
B. water supply contamination
C. food contamination
D. ground contamination
Answer:
|
B
|
sciq
|
Why is respiratory acidosis considered to be problematic?
A. causes suffocation
B. excess co2 in blood
C. causes acid stomach
D. excess oxygen in blood
Answer:
|
B
|
sciq
|
When light strikes rhodopsin, the g-protein transducin is activated, which in turn activates what?
A. photosynthesis
B. hydrolysis
C. phosphodiesterase
D. aldosterone
Answer:
|
C
|
sciq
|
In what stage of photosynthesis does the calvin cycle occur?
A. fourth
B. second
C. third
D. first
Answer:
|
B
|
sciq
|
All of the planets rotate on their axes in the same direction that they move around the sun, except for which one?
A. venus
B. Jupiter
C. Saturn
D. uranus
Answer:
|
D
|
sciq
|
What is the process by which organisms change in small ways over time?
A. adaptation
B. natural selection
C. spontaneous mutation
D. microevolution
Answer:
|
D
|
sciq
|
What regulates the cell cycle only when they are tightly bound to cdks?
A. cyclins
B. kinases
C. subclades
D. hormones
Answer:
|
A
|
sciq
|
Einstein developed a theory about how electromagnetic radiation can behave as both a wave and what else?
A. sound
B. energy
C. particle
D. bacteria
Answer:
|
C
|
sciq
|
What type of proteins are only temporarily associated with the membrane?
A. visual membrane proteins
B. peripheral oxidation proteins
C. peripheral membrane proteins
D. sensitive rod proteins
Answer:
|
C
|
sciq
|
Which organisms break down either organic or inorganic molecules to supply energy for the cell?
A. asexual organisms
B. spicule organisms
C. chemotrophic organisms
D. photoreactive organisms
Answer:
|
C
|
sciq
|
What are the things moving under the earth's mantle that move the crust?
A. lava channels
B. ridges
C. plates
D. crystals
Answer:
|
C
|
sciq
|
Although they look like big rocks, what structures that serve as habitats for many different types of ocean life are actually alive?
A. new forming reefs
B. southern reefs
C. coral reefs
D. natural reefs
Answer:
|
C
|
sciq
|
What type of reactions are chemical reactions that release energy?
A. ozonic reactions
B. biochemical reactions
C. sulfuric reactions
D. exothermic reactions
Answer:
|
D
|
sciq
|
Fossil fuels and coal are examples of what kind of resources?
A. valuable
B. reusable
C. nonrenewable
D. renewable
Answer:
|
C
|
sciq
|
What type of compound contains atoms of two or more different elements in its ring structure?
A. heterocyclic
B. hydrocarbon
C. aldehyde
D. polymer
Answer:
|
A
|
sciq
|
What is formed when atoms of different elements combine in a chemical reaction?
A. dust
B. crystals
C. compounds
D. toxins
Answer:
|
C
|
sciq
|
What type of electricity is formed when a negative charge builds up and are transferred?
A. alternating current
B. direct current
C. neutron energy
D. static electricity
Answer:
|
D
|
sciq
|
What important liquid is stored throughout the earth in the oceans, underground, and in ice?
A. lava
B. air
C. oil
D. water
Answer:
|
D
|
sciq
|
What results when a warm air mass runs into a cold air mass?
A. dry front
B. warm front
C. cool front
D. rough front
Answer:
|
B
|
sciq
|
Which type of double bond has a sigma bond and a pi bond?
A. dioxide - oxygen bond
B. sodium - oxygen bond
C. carbon-oxygen bond
D. Covalent Bonds
Answer:
|
C
|
sciq
|
Has the average annual temperature on earth been rising or falling for the past 100 years?
A. fluctuating
B. rising
C. unchanged
D. falling
Answer:
|
B
|
sciq
|
The majoirty of modern gymnosperms belong to what group, which includes pine trees?
A. clusters
B. stems
C. Pinophytes
D. conifers
Answer:
|
D
|
sciq
|
A circuit must be what in order for electric devices such as light bulbs to work?
A. closed
B. down
C. cyclical
D. open
Answer:
|
A
|
sciq
|
What type of radiation from the sun reaches earth across space striking everything on earth’s surface?
A. electromagnetic
B. static
C. seismic
D. particle
Answer:
|
A
|
sciq
|
What happens if a catalyst runs out?
A. reaction increases
B. reaction slows
C. variety increases
D. variety slows
Answer:
|
B
|
sciq
|
What type of mammals are humans?
A. placental mammals
B. somatic mammals
C. respiratory mammals
D. marsupial mammals
Answer:
|
A
|
sciq
|
The shape of the path of an object undergoing projectile motion in two dimensions is a what?
A. circle
B. radius
C. parabola
D. orbit
Answer:
|
C
|
sciq
|
The earliest cells were called what?
A. microcytes
B. prokaryotes
C. eukaryotes
D. carbohydrates
Answer:
|
B
|
sciq
|
Protists are the simplest of what?
A. fungi
B. eukaryotes
C. prokaryotes
D. plants
Answer:
|
B
|
sciq
|
The measure of magnetic fields is named after a serbian physicist. what is his name?
A. Niels Bohr
B. Albert Einstein
C. Carl Sagan
D. nikola tesla
Answer:
|
D
|
sciq
|
Radon (rn) is a radioactive gas formed by the decay of naturally occurring uranium in rocks such as granite. it tends to collect in the basements of houses and poses a significant health risk if present in indoor air. many states now require that houses be tested for radon before they are what?
A. built
B. modified
C. sold
D. seen
Answer:
|
C
|
sciq
|
What state of matter takes neither the shape nor the volume of its container?
A. liquid
B. gas
C. solid
D. hot
Answer:
|
C
|
sciq
|
Force times distance is the equation for what?
A. speed
B. gravity
C. power
D. work
Answer:
|
D
|
sciq
|
What is the name for a series of changes in the reproductive system of mature females that repeats every month on average?
A. menstrual cycle
B. puberty
C. urinary cycle
D. periodic table
Answer:
|
A
|
sciq
|
What is the name of the iron-containing oxygen-transport protein in the red blood cells of all vertebrates?
A. ferric acid
B. plasma
C. hemoglobin
D. platelet
Answer:
|
C
|
sciq
|
What is the active ingredient in household bleach?
A. magnesium
B. chlorine
C. iodine
D. oxygen
Answer:
|
B
|
sciq
|
What are the membrane-bound organelles that are usually larger than vesicles and can have secretory, excretory, and storage functions?
A. nucleolus
B. ribosomes
C. tubules
D. vacuoles
Answer:
|
D
|
sciq
|
What broad category of animals is primarily ectothermic and covered with scales that facilitate swimming?
A. fish
B. deer
C. armadillo
D. turtles
Answer:
|
A
|
sciq
|
What has two chains of nucleotides, one more than rna?
A. mna
B. fna
C. dna
D. gna
Answer:
|
C
|
sciq
|
The axon terminates on muscle fibers at the neuromuscular junction. acetylcholine is released at this specialized synapse, which causes the muscle action potential to begin, following a large potential known as an end plate potential. when the lower motor neuron excites the muscle fiber, it contracts. all of this occurs in a fraction of a second, but this story is the basis of how this functions?
A. cardiovascular system
B. respiratory system
C. nervous system
D. muscular system
Answer:
|
C
|
sciq
|
Misconceptions about what theory contribute to the controversy that still surrounds this fundamental principle of biology?
A. brain of evolution
B. darwin on evolution
C. theory of evolution
D. cycle of evolution
Answer:
|
C
|
sciq
|
What device is used to stop a current in a circuit?
A. a mirror
B. a valve
C. a switch
D. a signal
Answer:
|
C
|
sciq
|
What oily substance prevents the hair and skin of living things from drying out?
A. sebum
B. progesterone
C. pancreatic enzymes
D. pus
Answer:
|
A
|
sciq
|
What two types of communication do both humans and birds use primarily?
A. sensual and auditory
B. material and auditory
C. interaction and auditory
D. visual and auditory
Answer:
|
D
|
sciq
|
Eggs are produced in what organs and, upon fertilization, develop in what other organ?
A. uterus, vagina
B. ovaries, uterus
C. cervix, ovaries
D. fallopian tubes, ovaries
Answer:
|
B
|
sciq
|
The first line of defense includes mechanical, chemical, and which other barrier?
A. independent
B. surgical
C. biological
D. physical
Answer:
|
C
|
sciq
|
What is another term for nearsightedness?
A. anemia
B. hypoxia
C. myopia
D. astigmatism
Answer:
|
C
|
sciq
|
Because all animals require an external source of what, they are called heterotrophic?
A. water
B. energy
C. food
D. fuel
Answer:
|
C
|
sciq
|
What causes blue litmus to turn red?
A. carbon
B. base
C. oxygen
D. acid
Answer:
|
D
|
sciq
|
When fossil fuel is burned the chemical energy is converted into what?
A. thermal energy
B. atmospheric energy
C. kinetic energy
D. natural energy
Answer:
|
A
|
sciq
|
What two activities are especially important when a number of local populations are linked, forming a metapopulation?
A. immigration and emigration
B. family reunions and emigration
C. flow and emigration
D. immigration and family reunions
Answer:
|
A
|
sciq
|
What is the physical environment in which a species lives and to which it has adapted?
A. land mass
B. ecosystem
C. farmland
D. habitat
Answer:
|
D
|
sciq
|
What kind of tests may detect substances associated with particular disorders?
A. electrical
B. biochemical
C. hormonal
D. genetic
Answer:
|
B
|
sciq
|
Scientists think the solar system formed from a big cloud of gas and dust called what?
A. supernova
B. comet
C. Oort cloud
D. nebula
Answer:
|
D
|
sciq
|
What are the largest phylum of the animal kingdom?
A. arthropods
B. Crustacea
C. Chelicerata
D. Pycnogonida
Answer:
|
A
|
sciq
|
What is the name for a material that prevents the transfer of heat energy?
A. physical insulator
B. thermal insulator
C. thermal condenser
D. structure insulator
Answer:
|
B
|
sciq
|
What is a rock exposed to if it's undergoing metamorphism?
A. time and energy
B. heat and pressure
C. humidity and pressure
D. gravity and precipitation
Answer:
|
B
|
sciq
|
Water infiltrates the ground because soil and rock may have air spaces between the grains. these pores, or tiny holes, result in the rock's what?
A. porosity
B. energy
C. shine
D. sheen
Answer:
|
A
|
sciq
|
Work is done only if a force is exerted in the direction of what?
A. motion
B. gravity
C. wind
D. north
Answer:
|
A
|
sciq
|
What is the smallest independently functioning unit of a living organism?
A. proteins
B. cell
C. atom
D. molecule
Answer:
|
B
|
sciq
|
All animals have specialized types of what basic structures, which can then do different jobs?
A. muscles
B. cells
C. proteins
D. atoms
Answer:
|
B
|
sciq
|
What term describes the number of items in a given area or volume?
A. concentration
B. density
C. alkalinity
D. fraction
Answer:
|
A
|
sciq
|
Birds are known for flying south in the winter to avoid what?
A. solar radiation
B. cold weather
C. rain
D. hurricanes
Answer:
|
B
|
sciq
|
The root system is usually anchored by one main root developed from what?
A. organisms radicle
B. embryonic radicle
C. nuclei radicle
D. sperm radicle
Answer:
|
B
|
sciq
|
What type of learning is done from past experiences and reasoning?
A. consequence learning
B. insight learning
C. rational learning
D. transformation learning
Answer:
|
B
|
sciq
|
Where is the pituitary gland?
A. thyroid
B. brain
C. heart
D. lung
Answer:
|
B
|
sciq
|
Which fungi eaten by people all over the world?
A. legumes
B. fruits
C. algae
D. mushrooms
Answer:
|
D
|
sciq
|
The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. botanists call the upper side the adaxial surface (or adaxis) and the lower side this?
A. dorsal surface
B. abaxial surface (or abaxis)
C. posterior surface
D. anterior surface
Answer:
|
B
|
sciq
|
A small quake preceding a large quake is called what?
A. foreshock
B. preshock
C. aftershock
D. warning shock
Answer:
|
A
|
sciq
|
What do winter storms develop from at higher latitudes?
A. temperatures
B. humidity
C. clouds
D. cyclones
Answer:
|
D
|
sciq
|
What is the only substance on earth that is present in all three states of matter?
A. water
B. air
C. mercury
D. carbon
Answer:
|
A
|
sciq
|
What is essential for forming new genes?
A. enough mutations
B. large mutations
C. chromosome deversity
D. enough chromosomes
Answer:
|
B
|
sciq
|
What is fluid friction with air called?
A. buoyancy
B. air resistance
C. wind resistance
D. gravity
Answer:
|
B
|
sciq
|
Plants produce their own sugars and other food molecules through what process?
A. glycolysis
B. photosynthesis
C. spermatogenesis
D. hydrogenesis
Answer:
|
B
|
sciq
|
What do fission reactors use to slow down the neutrons?
A. control
B. moderator
C. brake
D. inertia
Answer:
|
B
|
sciq
|
What term is used to describe an unusual sound coming from the heart that is caused by the turbulent flow of blood?
A. garble
B. murmur
C. music
D. whisper
Answer:
|
B
|
sciq
|
Carbon atoms are bonded to as many hydrogen atoms as possible in what type of fatty acids?
A. oily
B. super
C. unsaturated
D. saturated
Answer:
|
D
|
sciq
|
What kind of mouthparts do aphids have?
A. siphoning mouthparts
B. chewing mouthparts
C. sponging mouthparts
D. piercing-sucking mouthparts
Answer:
|
D
|
sciq
|
Sounds, chemicals, and visual cues are examples of what between animals?
A. communication
B. migration
C. circulation
D. procreation
Answer:
|
A
|
sciq
|
What is pressure times area equal to?
A. density
B. mass
C. volume
D. force
Answer:
|
D
|
sciq
|
What part of the kangaroo helps it balance when it leaps as well as when it sits?
A. the spine
B. large feet
C. the pouch
D. the tail
Answer:
|
D
|
sciq
|
What is the evolutionary history of a group of related organisms called?
A. ancestry
B. superfamily
C. lineage
D. phylogeny
Answer:
|
D
|
sciq
|
What are specialized cells in the brain that monitor the concentration of solutes in the blood called?
A. staurikosaurus
B. osmoreceptors
C. sporozoans
D. ionconcentrate
Answer:
|
B
|
sciq
|
Bones consist of four types of tissue, compact bone, spongy bone, bone marrow, and what?
A. epithelium
B. collagen
C. plasma
D. periosteum
Answer:
|
D
|
sciq
|
During adolescence, what causes most of the changes associated with puberty?
A. testosterone
B. nicotine
C. methane
D. estrogen
Answer:
|
A
|
sciq
|
What is essential for cellular respiration for all aerobic organisms?
A. carbon
B. nitrogen
C. oxygen
D. water
Answer:
|
C
|
sciq
|
Breeding in birds occurs through an internal type of what process?
A. stimulation
B. sedimentation
C. fertilization
D. segmentation
Answer:
|
C
|
sciq
|
In an endothermic reaction, what is absorbed by the reaction?
A. fuel
B. energy
C. food
D. atoms
Answer:
|
B
|
sciq
|
What scientist and monk is best known for his experiments with pea plants?
A. gregor mendel
B. steiner mendel
C. aristotle
D. charles darwin
Answer:
|
A
|
sciq
|
What are structures that protect the coast like barrier islands called?
A. fortresses
B. breakwaters
C. dunes
D. domes
Answer:
|
B
|
sciq
|
What leads to multiple copies of a chromosomal region?
A. gene modification
B. duplications (or amplifications )
C. subtractions
D. minimilizations
Answer:
|
B
|
sciq
|
The larger surface area of leaves allows them to capture more what?
A. pollen
B. sunlight
C. chlorophyll
D. molecules
Answer:
|
B
|
sciq
|
What is connected to, and dependent on, the gametophyte?
A. the zygote
B. the sperm
C. the sporophyte
D. the chromosomes
Answer:
|
C
|
sciq
|
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