The "carbon skeleton" of an amino acid has the ________ attached to the anchor carbon atom.
A. acid group and a sulfur atom
B. amino group and an ammonia molecule
C. acid group and the R-group
D. amino group and the R-group
Answer: C
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Because the human body cannot store excess nitrogen, ________.
A. ammonia is formed from the excess nitrogen and the liver converts it into urea, which is eventually eliminated by the kidneys B. deamination removes it from the amino acid, leaving a substrate known as acetyl CoA C. the possible energy content of excess amino acids is wasted D. All of the choices are correct.
Tomas is a college junior and a competitive swimmer. Which of the following is the MOST sensible way for him to meet his high energy needs?
A) by consuming 40% of his daily energy intake as fat, 30% as carbohydrate, and 30% as protein B) by consuming amino acid supplements C) by grazing D) by consuming 2.5 g protein per kg of body weight
People with type 1 diabetes mellitus need insulin because they:
a. have become insulin resistant. b. have developed hyperinsulinemia. c. no longer synthesize insulin. d. digest insulin with GI enzymes.