Nutrition_CH6_Protein

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  1. Which level of organization is determined by the sequence of amino acids specified by the messenger RNA?

    A. tertiary
    B. primary
    C. secondary
    D. quaternary
    B.
    (this multiple choice question has been scrambled)
  2. Amino acids that have side chains that are not charged are called _____.

    A. dicarboxylic amino acids
    B. neutral amino acids
    C. basic amino acids
    D. polar amino acids
    B.
    (this multiple choice question has been scrambled)
  3. The compound that denatures the quaternary, tertiary and secondary structures of protein in the stomach during digestion is:

    A. hydrochloric acid
    B. pepsin
    C. pepsinogen
    D. gastrin
    A.
    (this multiple choice question has been scrambled)
  4. The major way that dipeptides and tripeptides enter the enterocytes through the brush border is by:

    A. an energy-dependent, sodium-dependent carrier
    B. peptide carrier
    C. diffusion
    D. the L amino acid transport system
    B.
    (this multiple choice question has been scrambled)
  5. Glutamine is often added to nutritional mixtures used for hospitalized patients because:

    A. growth of mucosal cells
    B. it is the most important essential amino acid
    C. it will substitute for several essential amino acids during protein synthesis
    D. it improves gluconeogenesis when the patient is not eating
    A.
    (this multiple choice question has been scrambled)
  6. When the diet is lacking in the amino acids alanine and glycine:

    A. protein synthesis will be limited
    B. the body will synthesize them
    C. proteins will be made without one amino acid
    D. another amino acid will be substituted so that synthesis is uninterrupted.
    B.
    (this multiple choice question has been scrambled)
  7. Lysine and threonine cannot undergo transamination to an appreciable amount and are said to be _____.

    A. nutritionally dispensable
    B. nonessential
    C. totally indispensable
    D. carbon-skeleton indispensable
    C.
    (this multiple choice question has been scrambled)
  8. Cholecystokinin and secretin are regulatory peptides in the pancreatic phase of digestion that activate the release of _____.

    A. brush-border enzymes such as enteropeptidase
    B. gastrin
    C. pepsinogen
    D. salivary lipase
    A.
    (this multiple choice question has been scrambled)
  9. Chemical messengers secreted by endocrine tissue and transported to target organs where they regulate metabolic processes are ____.

    A. enzymes
    B. hormones
    C. transport proteins
    D. immunoproteins
    B.
    (this multiple choice question has been scrambled)
  10. Which of the following is a nitrogen containing, non-protein compound that performs an important function in the body?

    A. cysteine
    B. actin
    C. proline
    D. carnitine
    D.
    (this multiple choice question has been scrambled)
  11. Deamination of amino acids results in the production of toxic _____.

    A. ammonia
    B. urea
    C. carbamoyl phosphate
    D. glutamine
    A.
    (this multiple choice question has been scrambled)
  12. If blood urea nitrogen were high, which organ would you suspect of inadequate function?

    A. liver
    B. kidney
    C. spleen
    D. pancreas
    B.
    (this multiple choice question has been scrambled)
  13. When the amino group has been removed from an amino acid, the carbon skeleton or alpha-keto acid may be used for production of _____.

    A. creatine
    B. choline
    C. glutathione
    D. cholesterol
    D.
    (this multiple choice question has been scrambled)
  14. All of the following amino acids are glucogenic EXCEPT:

    A. alanine
    B. aspartate
    C. leucine
    D. glycine
    C.
    (this multiple choice question has been scrambled)
  15. Maple syrup urine disease is the genetic disease associated with the lack of the:

    A. liver enzyme necessary to convert phenylalanine to tyrosine
    B. normal activity of cystathione synthase
    C. enzyme lactase
    D. branched-chain alpha-keto acid dehydrogenase complex
    D.
    (this multiple choice question has been scrambled)
  16. Which of the following amino acids represent the aromatic amino acids?

    A. valine, leucine, and isoleucine
    B. arginine, lysine, and histidine
    C. glycine, alanine, and threonine
    D. phenylalanine, tyrosine, and tryptophan
    D.
    (this multiple choice question has been scrambled)
  17. Which amino acids are particularly metabolized by brain neurons?

    A. those with side chains containing sulfur atoms
    B. those with side chains that are branched
    C. those with side chains containing basic groups
    D. those with side chains containing aromatic rings
    D.
    (this multiple choice question has been scrambled)
  18. When amino acids are not needed by the liver for protein synthesis, they are predominately _____.

    A. oxidized
    B. decarboxylated
    C. hydrogenated
    D. phosphorylated
    A.
    (this multiple choice question has been scrambled)
  19. Urinary excretion of which compound is used as an indicator of the amount of existing muscle mass?

    A. 3-methylhistine
    B. carnitine
    C. BUN
    D. creatinine
    D.
    (this multiple choice question has been scrambled)
  20. Leucine when oxidized in muscle tissue, _____.

    A. is converted to glucose
    B. produces catecholamines
    C. spares essential gluconeogenic precursors, pyruvate and lactate
    D. creates glycine
    C.
    (this multiple choice question has been scrambled)
  21. What amino acid is the precursor of catecholamines from the adrenal medulla?

    A. tyrosine
    B. arginine
    C. serine
    D. tryptophan
    A.
    (this multiple choice question has been scrambled)
  22. GABA, an inhibitory neurotransmitter, is made from which amino acid?

    A. threonine
    B. niacin
    C. glutamate
    D. tyrosine
    C.
    (this multiple choice question has been scrambled)
  23. Which of the following is a neurotransmitter?

    A. trypsin
    B. insulin
    C. acetylcholine
    D. endorphin
    C.
    (this multiple choice question has been scrambled)
  24. Which of the following is true regarding protein turnover?

    A. Protein turnover occurs only during periods of growth.
    B. Rate of protein turnover is similar in most body tissues.
    C. Protein synthesis requires energy, but protein breakdown to amino acids produces energy.
    D. Protein turnover accounts for upt to 1/4 of resting metabolic rate.
    D.
    (this multiple choice question has been scrambled)
  25. Lysosomes and protasomes are involved with _____.

    A. protein breakdown
    B. protein synthesis
    C. endorphin activity
    D. energy production
    A.
    (this multiple choice question has been scrambled)
  26. Chemical score is best described as:

    A. the content of the most limiting essential amino acid in the protein relative to a reference pattern or a reference protein.
    B. the quality of a protein
    C. the overall amino acid composition of a protein relative to a reference protein.
    D. the biologica value of a protein
    A.
    (this multiple choice question has been scrambled)
  27. Grains are limited in lysine, threonine or tryptophan. What food group is considered complementary because it supplies these amino acids?

    A. starchy vegetables
    B. fruits
    C. legumes
    D. nuts
    C.
    (this multiple choice question has been scrambled)
  28. When evaluating protein quality, which of the following measures represents the retention of food nitrogen consumed rather than retention of food nitrogen absorbed?

    A. chemical score
    B. PER
    C. NPU
    D. BV
    C.
    (this multiple choice question has been scrambled)
  29. What is the current Recommended Dietary Allowance for protein for adults?

    A. o.66 g/kg/d
    B. No adult Recommended Dietary Allowance has been established
    C. 50 g/d
    D. 0.8 g/kg/d
    D.
    (this multiple choice question has been scrambled)
  30. Which nonessential amino acids are known to be particularly important?

    A. glutamine, glutamate and alanine
    B. tryptophan and tyrosine
    C. serine and glycine
    D. leucine, isoleucine and valine
    A.
    (this multiple choice question has been scrambled)
Author
ID
124670
Card Set
Nutrition_CH6_Protein
Description
Human Nutrition Ch 6 - Protein
Updated
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