Why do Siamese cats have brown ears, nose, tails and paws?
a. Siamese cats contain heat sensitive enzymes that are more active in the extremities.
b. Siamese cats contain heat sensitive enzymes that are more active in the core body.
c. Siamese cats contain pH sensitive enzymes that are more active in regions of the body exposed to UV
radiation.
d. Siamese cats contain pH sensitive enzymes that are more active in regions of the body that are not exposed to
UV radiation
e. Siamese cats contain pH sensitive enzymes that are more active in regions of the body that contain nerve
endings.
ANSWER: a
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Which of the following statements is false regarding phagocytosis?
A) It involves ingestion of large particles by the cell. B) It involves the projection of pseudopodia. C) It is a method used predominantly by amoeba to obtain food. D) It is mediated by clathrin at the plasma membrane. E) In vertebrates, macrophages and neutrophils possess this ability.
____________________ are open channels that connect the cytoplasm of abutting cells and permit rapid transfer of
ions and small molecules between them. Fill in the blank(s) with the appropriate word(s).
The initial carrying capacity of an environment
is indicated by a. A. b. B. c. C. d. D. e. E.