Which bases are found in RNA?
a. adenine and uracil only
b. adenine, thymine, and cytosine only
c. adenine, uracil, and cytosine only
d. adenine, uracil, guanine, and cytosine
e. adenine, thymine, guanine, and cytosine
ANSWER: d
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A. ionic. B. covalent. C. hydrogen. D. All the choices are correct.
The process of maintaining a constant internal environment is called
A. homeostasis. B. metabolism. C. induction. D. deduction.
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A) facilitated diffusion to move glucose down its concentration gradient. B) osmosis to directly absorb glucose. C) facilitated diffusion to move glucose up its concentration gradient. D) active transport to move glucose up its concentration gradient. E) active transport to move glucose down its concentration gradient.
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A) Prophase B) Death phase C) Stationary phase D) Log phase E) Lag phase