Phenylalanine is a precursor for:
a. serotonin
b. catecholamines
c. tryptophan
d. tyrosine
Ans: d. tyrosine
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The enzyme that stimulates the breakdown of triglycerides and the release of fatty acids from adipocytes is ____
A) pancreatic lipase B) lipoprotein lipase C) hormone-sensitive lipase D) carnitine acyl transferase
The cell membrane is selectively permeable, allowing only some compounds to enter and leave
the cell. Indicate whether the statement is true or false
Which of the following is NOT a factor that indicates an infant is ready to accept solid foods?
A) The infant's tongue extrusion reflex has begun to abate. B) The infant has high stores of iron. C) The infant is at least six months old. D) The infant can sit up with or without support.
Which component of energy expenditure is the most variable from one person to another?
A) basal metabolism B) adaptive thermogenesis C) energy cost of physical activity D) thermic effect of food