Which of these thermoregulation processes can be sustained for the longest period of time?

A. nonshivering thermogenesis
B. fever
C. hibernation
D. shivering
E. sweating


Answer: C

Biology & Microbiology

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Which of the following statements about lichens is incorrect?

A. Lichens are symbiotic relationships between fungi and plants. B. The partnership in a lichen is not species specific. C. Lichens can reproduce sexually and asexually. D. Lichens can extract nutrients from rocks or rainfall. E. Lichens are very sensitive to air pollution.

Biology & Microbiology

Calico cats are never male because:a

recessive genes are not usually expressed on their X chromosome. b. male hormones prevent expression of the calico phenotype. c. two different X chromosomes are needed for the expression of the calico phenotype. d. two different Y chromosomes are needed for the expression of the calico phenotype. e. one X chromosome and one Y chromosome are needed for the expression of the calico phenotype.

Biology & Microbiology

cAMP levels decrease when __________. This results in __________ of CAP

a. lactose levels increase; activation b. lactose levels decrease; inhibition c. glucose levels increase; inhibition d. glucose levels decrease; activation e. glucose levels decrease; inhibition

Biology & Microbiology

Which of the following hormones affects the greatest variety of cell types?

A) prolactin B) insulin C) growth hormone D) calcitonin

Biology & Microbiology