Aerobic exercise improves endurance by
a. increasing the number of muscle fibers.
b. increasing the mass of each muscle fiber.
c. causing more glycogen to be stored in each
muscle fiber.
d. increasing the number of mitochondria in each
muscle fiber.
e. doing all of these.
Answer: d
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uncontrollably is known as
a. oncogenes. b. proto-oncogenes. c. neoplasms. d. checkpoints. e. descendant tumors
The presence or absence of which hormone(s) is critical in determining the development of either male or female reproductive structures in an embryo?
A) androgens B) estrogen C) gonadotropin-releasing hormone D) progesterone
During sexual reproduction, Saccharomyces cerevisiae produces blastospores.
Answer the following statement true (T) or false (F)
Which class of nucleic acid delivers amino acids to ribosomes?
A) mRNA B) tRNA C) rRNA D) DNA