Crossing over is facilitated by a ____ orientation between homologous chromosomes.
A. tightly angled
B. separated, perpendicular
C. tight, perpendicular
D. separated, parallel
E. tight, parallel
Answer: E
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Bone tissue is composed of ____ and ____ regions
a. spongy; muscular b. spongy; compact c. compact; diffuse d. aerobic; anaerobic e. red; white
How does the amount of yolk relate to the nourishment of the organism?
a. An egg with a small amount of yolk contains all of the nutrients for the embryo's development. b. An egg with a large amount of yolk contains all of the nutrients for the embryo's development. c. An egg lacking yolk contains all of the nutrients for the embryo's development. d. There is no relationship between the amount of yolk and the nourishment of the organism. e. All animal eggs have the same amount of yolk and provide the same amount of nourishment.
What does myoglobin supply for muscle
activity?
a. oxygen for aerobic respiration b. phosphate for ATP formation c. direct energy for white muscle fiber contraction d. glucose for lactate fermentation e. more than one of these
Protective features of the skin include all of the following except ________.
A. a keratinized surface B. high pH C. high salt content D. resident biota E. lysozyme