721. All proteins contain the chemical element (atom), but carbohydrates and fats rarely do.
A. Carbon
B. Nitrogen *
C. Hydrogen
D. Oxygen
722. An essential amino acid:
A. Forms a complete protein
B. Is only required by growing children and infants
C. May prevent dermatitis
(D. The body cannot synthesize sufficient amounts to meet the body’s needs)
723. Peptide bonds are formed:
A. By excluding water molecules *
B. By excluding hydrogen atoms
C. By making esters
D. When developing tertiary structure
724. A protein’s: is determined by the order in which its amino acids are arranged.
A. Energy content
B. Function in the body *
C. Biological value
D. Ability to form glucose
725. The denaturing of protein:
A. Destroys its amino acid order
(B. Happens in the stomach)
C. Increases its enzymatic activity
D. Forms an emulsifier
726. Insulin, and other medications that are protein in nature, cannot be administered orally because:
A. They won’t be assimilated through the gastrointestinal wall
(B. They will be digested and lose their biological activity)
C. They will activate the immune system
D. They will diminish kidney function
727. Proteins help regulate body PH by:
A. Taking in and letting go of free hydrogen ions *
B. Taking in alkaline substances from the blood
C. Taking in amino acids that make acids and releasing them into the blood
D. None of these
728. A buffer helps:
A. Emulsify fats
(B. Keep the pH of a solution constant)
C. Speed chemical reactions
D. Protect against plaque build-up in the arteries
729. Nutritional edema occurs when:
A. The serum protein concentration is increased
(B. The serum protein concentration is decreased)
C. The red cell number decreases
D. There is a change in blood hemoglobin
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