In terms of the number of species, the most successful class of arthropods is
A. Chelicerata.
B. Myriapoda.
C. Crustacea.
D. Hexapoda.
E. Chilopoda.
Answer: D
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Which of the following lipid compositions would yield the greatest membrane fluidity?
A. Phospholipids with long-chain, saturated fatty acids at low temperature B. Phospholipids with long-chain, unsaturated fatty acids, plus cholesterol at normal temperature C. Phospholipids with short-chain, unsaturated fatty acids, plus cholesterol at low temperature D. Phospholipids with short-chain, saturated fatty acids, plus cholesterol at normal temperature
Polar bodies
a. are dumping places for excess genetic material. b. have no known biological function. c. are produced by meiosis. d. will serve as the gametes if something happens to the egg. e. all of these are true EXCEPT “will serve as the gametes if something happens to the egg.”
What proteins move the chromosomes around during cell division?
What will be an ideal response?
As the human immunodeficiency virus (HIV) begins to kill the host's _____________________, the host's immune system begins to fail.
a. liver cells b. RNA c. red blood cells d. DNA e. white blood cells