The combined effects of inhibitory and excitatory effects on a postsynaptic cell will decide whether that cell generates an action potential. This principle is called ________
A) potentiation B) internalization C) threshold D) summation
Answer: D
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Sister chromatids separate during
A. prophase of meiosis I. B. metaphase of meiosis I. C. metaphase of meiosis II. D. prometaphase of meiosis I. E. anaphase of meiosis II.
Club mosses
a. are placed in the subphylum Pterophyta. b. are so-called because of the social nature of the plants. c. do not produce gametophytes. d. are so-called because most produce strobili.
Which of the following is NOT included in the definition of a phenotype?
a. chemicals an individual produces, such as in digesting lactose b. features visible to the naked eye, i.e. height c. all the genes an individual carries d. certain behaviors an individual exhibits e. outward appearance
In the Voges-Proskauer test, reagent B is
A. Sulfanilic acid B. Creatine C. Kovac's reagent D. Alpha-Naphthylamine E. Alpha-Napthol and KOH