An EPSP is an example of a graded potential
____________________ Indicate whether the statement is true or false.
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Cancer is usually due to:
A. exposure to chemicals or radiation. B. mutations in stem cells. C. a series of mutations that occur throughout an affected tissue or organ. D. a series of mutations that occur in a single lineage of somatic cells. E. a series of mutations that occur in multiple lineages of germ cells.
What is the name of the elongated structure that links the embryo to the nutrient tissue of the seed?
A. suspensor B. cotyledon C. epicotyl D. style E. ovule
Which term best describes a zygote? a. Diploid cell of mixed parentage
b. Diploid cell of single parentage. c. Haploid cell of mixed parentage. d. Haploid cell of single parentage. e. None of these choices.
The presynaptic neuron and postsynaptic neuron do not directly contact each other because
a. one would inhibit the actions of the other. b. they never grow to sufficient length. c. the synaptic vesicles keep them apart. d. this would cause continuous impulse transmission. e. acetylcholine prevents this action.