31) Protein catabolism an impractical source of quick energy because
A) : 1200376.
31) Protein catabolism is an impractical source of quick energy because
A) the major byproduct is hydrogen, which cells cannot use for energy.
B) proteins are unimportant to cellular homeostasis.
C) the body cannot synthesize any of the proteins, which it needs.
D) proteins are catabolized much too easily, resulting in homeostatic imbalance.
E) proteins are more difficult to catabolize than are complex carbohydrates or lipids.
32) Synthesis of ________ occurs only in cells preparing for mitosis or meiosis.
A) ribosomal RNA (rRNA)
B) cholesterol
C) messenger RNA (mRNA)
D) DNA
E) transfer RNA (tRNA)
33) Which of the following is never catabolized for energy, even in cells dying of starvation?
A) DNA
B) proteins
C) rRNA
D) tRNA
E) mRNA
34) Nucleotides from RNA
A) are deaminated to form ammonia.
B) can provide sugars for glycolysis, in order to form ATP.
C) can be used to synthesize proteins.
D) cannot be used as a source of energy for the production of ATP.
E) cannot be recycled.
35) Which of the following is a fat-soluble vitamin?
A) vitamin K
B) vitamin C
C) vitamin B6
D) niacin
E) riboflavin
36) Which of the following is a complete protein source?
A) corn
B) spinach
C) rice
D) eggs
E) oranges
37) Which of the following is a major ion in body fluids, primarily excreted through urine and sweat?
A) sodium
B) chloride
C) potassium
D) calcium
E) zinc
38) The vitamin that functions as part of coenzyme A is
A) pantothenic acid (B5).
B) niacin (B3).
C) vitamin A.
D) vitamin C.
E) riboflavin (B2).
39) A bulk mineral that is essential for normal muscle and neuron function is
A) sodium.
B) potassium.
C) calcium.
D) magnesium.
E) selenium.
40) An ion that is a necessary component of high-energy compounds, nucleic acids, and bone matrix is
A) chloride.
B) sulfate.
C) phosphate.
D) bicarbonate.
E) iodide.
31) Protein catabolism an impractical source of quick energy because
A) : 1200376
