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5 Written questions

5 Matching questions

  1. _______________ is an important protein that acts as a hormone. It is produced by the beta cells of the pancreas.
  2. Proteins are digested in which areas of the body?
    A) Small and large intestines
    B) Mouth and stomach
    C) Stomach and small intestine
    D) Mouth and small intestine
  3. Approximately how many different amino acids are used in the synthesis of body proteins?
    A) 9
    B) 29
    C) 5
    D) 20
  4. All of the following are essential amino acids except
    A) lysine.
    B) methionine.
    C) threonine.
    D) alanine.
  5. The basic structure of an amino acid is C carbon atom with four different elements/groups bonded to it. The carbon has a hydrogen atom attached, a carboxyl group (acid group), a __________ , and a generic "R" group, which identifies the amino acid.
    A) sulfhydryl group
    B) hydroxyl group
    C) amino group
    D) methyl group
  1. a D - 20
  2. b D - alanine
  3. c C - amino group
  4. d insulin
  5. e C - Stomach and small intestine

5 Multiple choice questions

  1. D - 0.8
  2. incomplete
  3. C - it provides 7 kcal/g of energy
  4. C - the size of his vital organs
  5. A

5 True/False questions

  1. Proteins regulate the acid-base balance of the blood by
    A) releasing an acid.
    B) binding sodium ions.
    C) releasing nitrogen.
    D) acting as buffers
    C - Stomach and small intestine


  2. What enzyme is released by the stomach to digest protein?
    A) Trypsin
    B) Lipoprotein lipase
    C) Pepsin
    D) Amylase
    C - pepsin


  3. Wilma is an alcoholic. Her liver has been damaged to such a degree that it cannot produce the appropriate blood proteins for fluid balance. She develops a condition called edema, which is
    A) cardiovascular disease.
    B) extreme thirst.
    C) loss of muscle mass.
    D) the build up of fluids in extracellular spaces.
    D - the build up of fluids in extracellular spaces


  4. Treating a protein with acid, heat, or agitation will cause _______________, meaning that the three-dimensional structure of the protein has been altered (it unfolds).peptide


  5. Which of the following is not true about pepsin?
    A) Acid activates pepsin.
    B) Pepsin works best in an alkaline environment.
    C) Pepsin acts on food in the stomach.
    D) Amino acid chains are the digestive products of its action.