The basic structure of a virus contains:
a. a nucleic acid
b. a cell wall
c. a protein coat
d. both choice 1 and 2
e. both choice 1 and 3
Ans: e. both choice 1 and 3
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A skeleton that relies on muscular force exerted against water is termed
A. a hydrostatic skeleton. B. an endoskeleton. C. an exoskeleton. D. an ectoskeleton. E. a hygroscopic skeleton.
Which type of reaction will convert molecules with low energy into ones with high energy? a. Entropy b. None of these choices
c. Exergonic d. Endergonic e. Kinetic
Most of the filtrate is reabsorbed through the walls of the:a
distal convoluted tubule. b. loop of Henle. c. proximal convoluted tubule. d. collecting duct. e. glomerulus.
The number of extinctions of birds and mammals has gone up as human populations have increased.
Answer the following statement true (T) or false (F)