Under conditions of resting membrane potential, the inside of the cell is ________________ charged with respect to the outside, and when an action potential is generated, the inside becomes ____________ with respect to the outside of the cell
A. negatively; more negative
B. negatively; positive
C. positively; negative
D. positively; hyperpolarized
B
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Photosynthesis converts the energy of light
into
a. pigments. b. chemical bond energy. c. carbohydrates. d. electrons and protons. e. heat energy.
The body of a bilaterally symmetrical animal can divided into two equivalent halves by more than one
plane. ____________________ Indicate whether the statement is true or false.
Traits that depend on more than one gene are
a) polygenic. b) pleiotropic. c) codominant. d) recessive. e) incomplete dominant traits.
Cave-dwelling catfish and cave-dwelling salamanders share striking similarities: Both organisms lack pigmentation, and their eyes are reduced or absent. The most recent common ancestor to these organisms had normal pigmentation and fully developed eyes
The similarities between cave catfish and cave salamanders are an example of A) phylogeny. B) analogy. C) homology. D) exaptation.