The structures in the nucleus that serve as a "mitotic clock" are
A. hormones.
B. ribosomes.
C. telomeres.
D. kinases.
Answer: C
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Which of the following is a factor that does NOT affect heat production?
a) Exercise b) Hormones c) Nervous system d) Ingestion of food e) Blood volume
Which event occurs first as an individual grows and ages?
A) The styloid process fuses to the temporal bone. B) The adult dentition appears. C) The hyoid bone finishes ossifying and fusing. D) The ossification centers of the occipital bone fuse. E) The frontal suture closes.
Type B intercalated cells in the kidneys secrete bicarbonate ions, reabsorb hydrogen ions, and secrete potassium ions
Indicate whether the statement is true or false
If oxygen levels drop such that glucose metabolism becomes primarily anaerobic, then the amount of ATP produced per glucose molecule will
A. increase slightly.
B. remain roughly the same.
C. be halved.
D. decrease to much less than half of what it was.