HE 300 Nutrition and Physical Fitness Exam 2 (Chapters 5-9) | Questions And Answers
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Which of the following is true regarding the nitrogen balance technique?
A. It can account for rapidly turning over body tissues.
B. It cannot provide accurate insight on dietary protein intake recommendations for athletes.
C. It does not assume that all proteins in all body systems and tissues are behaving the exact same way.
D. It can provide insight into the kinetics of body proteins. - B. It cannot provide accurate insight on
dietary protein intake recommendations for athletes
Protein denaturation is
A. the process of metabolizing protein for energy
B. the process of converting protein products to nitrogenous waste
C. the initial catabolic event that causes the protein to lose its shape and function
D. the anabolic event to synthesize proteins - C. the initial catabolic event that causes the protein to
lose its shape and function
Hydrochloric acid (HCL) plays important roles in the digestion of protein in the stomach but does NOT
A. convert pepsinogen into its active form (called pepsin-the enzyme that aids in protein digestion)
B. help protect the cells from digesting itself
C. unfold proteins into long polypeptide chains
D. transport the proteins to the small intestine - D. transport the proteins to the small intestine
Enzymes are proteins that
A. serve as chemical messengers
B. speed up chemical reactions
C. make up the immune system and protect from foreign pathogens
D. transport oxygen, vitamins, or minerals - B. speed up chemical reactions
, The ________ is one of the more common methods of measuring protein quality and is simply a
measure of how much of the protein absorbed by the digestive tract is retained in the body for growth
and maintenance.
A. nitrogen balance score
B. quality score
C. biological value
D. chemical score - C. biological value
What could explain a person's lactose intolerance?
A. The person's lactase does not recognize lactose, so lactose cannot be digested.
B. The person has too much lactase, causing an accumulation of lactose.
C. The person is lactase deficient, so lactose cannot be broken down into smaller sugars.
D. The person is allergic to lactose. - C. The person is lactase deficient, so lactose cannot be broken
down into smaller sugars.
The protein that provides the anatomical structure of hair and nails is called ________.
A. myosin
B. collagen
C. keratin
D. actin - C. keratin
Increasing protein intake is critical during all cases of metabolic stress EXCEPT
A. infection
B. trauma
C. inflammatory disease
D. recreational exercise - D. recreational exercise
A protein's tertiary structure refers to its sequence of amino acids
A. coiling or unfolding its polypeptide chain
B. forming a three-dimensional shape caused by weak interactions among side groups and the
interactions between side groups and the fluid environment
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