Before an amino acid can be broken down for energy
A. it must be phosphorylated.
B. it must be converted to NAD+.
C. the carboxyl group must be removed.
D. the amino group must be removed.
E. the side chain must be removed.
Answer: D
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A. sucrose; bulbourethral gland B. semen; seminiferous gland C. fructose; seminal vesicles D. seminogelin; prostate E. prostaglandins; prostate
Which is TRUE about hormone binding to the proteins found in plasma?
A. Steroid hormones do not bind to plasma proteins. B. The binding proteins that transport hormones are hormones themselves. C. The tighter that a hormone binds to a carrier protein in the plasma, the faster the body can usually get rid of that hormone. D. Hydrophobic hormones like steroid and thyroid hormones need binding proteins because they are not very soluble in the blood plasma. E. Only peptide-type hormones can bind to the carrier proteins found in the plasma.
What kind of bonds do the mineral salts form?
a. hydrogen b. ionic c. covalent d. isotopic
The membrane that lines passageways that open to the exterior environment is called __________.
A. the lamina propria B. endothelium C. a synovial membrane D. a serous membrane (serosa) E. a mucous membrane (mucosa)