The force a contracting muscle exerts to move an object is muscle ____
a. tone
b. tension
c. power
d. work
e. energy
ANSWER: b
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What type of cladogenesis occurs when a new species arises in the same habitat as the species from which it was derived?
A. Parapatric speciation B. Allopatric speciation C. Sympatric speciation
In water, NaOH almost completely separates into Na+ and OH- ions. Thus, NaOH is _____
a. a strong acid b. a strong base c. a weak acid d. a weak base e. neutral
Physiological changes in ectotherms that change their temperature tolerance as the seasons change
from winter to summer are called
a. estivation. b. hyperthermia. c. thermal acclimatization. d. hypothermia. e. hibernation.
Which of the following is not a required property of living systems?
A. made of one or more cells B. engages in homeostasis and metabolism C. passes hereditary material to offspring D. dependence on water E. contains genetic material in a nucleus