The appearance of an egg outside of a goose's nest is called
A. an innate releasing mechanism.
B. a sign stimulus.
C. imprinting.
D. a fixed action pattern.
Answer: B
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The only part of the nervous system under
voluntary control is the ___ nervous system.
a. somatic b. autonomic c. central d. sympathetic e. parasympathetic
A chemical characteristic of a cell or particle that causes an immune response is a(n) ____
a. allergy b. antibody c. antigen d. blood type e. Rh factor
Eukaryotic chromosomes consist of
A) DNA alone. B) DNA complexed with protein. C) DNA complexed with RNA. D) DNA complexed with fatty acids. E) DNA complexed with protein and RNA.
We know the detailed molecular structure and mechanism of action of the transmembrane protein bacteriorhodopsin. This protein uses sunlight as the source of energy to pump ______ out of the cell
(a) ATP (b) H+ (c) K+ (d) Na+