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
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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.
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.
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
Which of the following hormones affects the greatest variety of cell types?
A) prolactin B) insulin C) growth hormone D) calcitonin