Which is a characteristic of a good hypothesis?
a. It is falsifiable
b. It is a statement of fact.
c. It can only be tested once.
d. It can be proven to be true.
e. It represents important conclusions
a
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Which of the following statements about action potentials is correct?
A) Action potentials for a given neuron vary in magnitude. B) Action potentials for a given neuron vary in duration. C) Action potentials are propagated down the length of the axon. D) Movement of ions during the action potential occurs mostly through the sodium pump.
Some scientists have suggested that recent outbreaks of sudden oak disease could be fought through the creation of transgenic plants with genetic resistance to sudden oak disease. What would be the most likely source of this genetic resistance?
A. a species of aphid with resistance to sudden oak disease B. entirely new genes created in a lab and inserted into the oak genome C. other tree species with unusually high levels of host plant resistance D. domesticated apple trees adapted to North America E. the original host species in the native region of the disease
Which of the following organisms does NOT do meiosis?
a. amoeba- a protist b. Candida - a fungus c. E. coli - a bacterium d. hydra - a marine invertebrate e. more than one of these organisms does NOT do meiosis
A term used to describe genetic differences among members of a population is
A. species. B. genetic diversity. C. community. D. biome.