In a muscle contraction, which element is fixed
in place?
a. the muscle fiber
b. the myofilament
c. the sarcomere
d. the actin filament
e. the myosin filament
E
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Graph A shows that ant species richness
a. peaks at the equator. b. drops by 50 percent at 30 degrees north latitude. c. is less than 50 at 60 degrees north latitude. d. is somewhat greater at 30 degrees north latitude than at 30 degrees south latitude. e. includes all of these
The letter “A” in the above figure is
a. the epidermis. b. the sweat gland. c. the dermis. d. the hypodermis. e. none of the above.
The suborder Prosimii includes:a
tarsiers. b. lemurs, galagos, and lorises. c. monkeys. d. monkeys and apes. e. monkeys, apes, and humans
Which term refers to animals that do NOT have a body cavity that separates the gut from the muscles of the body wall?
a. indeterminate b. acoelomate c. pseudocoelomate d. mesenteries