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Nutrition - Chapter 6 Review Questions
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    Nutrition - Chapter 6 Review Questions Nutrition - Chapter 6 Review Questions Presentation Transcript

    • Wardlaw’s Contemporary Nutrition, Seventh Edition Copyright © The McGraw-Hill Companies, InC) Permission required for reproduction or display. Gordon M. Wardlaw Anne M. Smith Chapter 6
    • Question 1
      • The basic building block of a protein is called a(n)
      • A. fatty acid.
      • B. monosaccharide.
      • C. amino acid.
      • D. keto acid.
    • Question 2
      • The chemical element found in all amino acids but not found in either carbohydrates or fats is
      • A. carbon.
      • B. nitrogen.
      • C. oxygen.
      • D. hydrogen.
    • Question 3
      • Which of the following is true about protein?
      • A. It is unique in that it is the only dietary component that contains selenium.
      • B. It is important primarily for increasing bone density.
      • C. It is made up of combinations of approximately 20 amino acids.
      • D. It is made up of combinations of amino acids and fatty acids.
    • Question 4
      • An essential amino acid
      • A. can be synthesized in the body if there is a nitrogen source.
      • B. can be synthesized in the body if caloric intake is adequate.
      • C. cannot be synthesized in the body in sufficient quantity to meet body needs.
      • D. can be formed in the body from semiessential amino acids.
    • Question 5
      • The nitrogen from amino acid breakdown is
      • A. stored in the liver.
      • B. oxidized to carbohydrate.
      • C. converted to urea.
      • D. converted to fat.
    • Question 6
      • All of the following are true of high quality protein except
      • A. it contains all essential amino acids.
      • B. it provides 7 kcal/g of energy.
      • C. it can support body maintenance.
      • D. it can support body growth.
    • Question 7
      • Which of the following is not true about an incomplete protein source?
      • A. It lacks one or more essential amino acids.
      • B. It cannot support body growth and maintenance by itself.
      • C. To adequately meet protein needs from incomplete protein sources a person would have to eat two complementary proteins.
      • D. Lower quantities of this source could be eaten to get adequate quantities of essential amino acids.
    • Question 8
      • Which of the following is a food that provides all of the essential amino acids?
      • A. Wheat
      • B. Peanut butter
      • C. Navy beans
      • D. Milk
    • Question 9
      • Proteins are digested in which areas of the body?
      • A. Mouth and stomach
      • B. Mouth and small intestine
      • C. Stomach and small intestine
      • D. Small and large intestines
    • Question 10
      • What enzyme is released by the stomach to digest protein?
      • A. Pepsin
      • B. Lipoprotein lipase
      • C. Amylase
      • D. Trypsin
    • Question 11
      • Which of the following is not true about pepsin?
      • A. Amino acid chains are the digestive products of its action.
      • B. Pepsin works best in an alkaline environment.
      • C. Acid activates pepsin.
      • D. Pepsin acts on food in the stomach.
    • Question 12
      • If the diet is lacking an essential amino acid, what will be the course of action?
      • A. Body cells will synthesize it.
      • B. Protein synthesis will be limited.
      • C. Health will not be affected as long as other nutrients are adequate.
      • D. Proteins will be made but they will lack that particular amino acid.
    • Question 13
      • If a food does not contain the necessary amounts of a certain amino acid to meet a body need, that amino acid is referred to as a
      • A. complementary amino acid.
      • B. essential amino acid.
      • C. limiting amino acid.
      • D. dispensable amino acid.
    • Question 14
      • When protein consumption is in excess of body needs and energy needs are met, the excess amino acids are metabolized and the energy in the molecule is
      • A. stored as glycogen and/or fat.
      • B. excreted in the urine.
      • C. stored as amino acids in muscle.
      • D. stored as amino acids in the liver.
    • Question 15
      • Approximately how many different amino acids are used in the synthesis of body proteins?
      • A. 5
      • B. 9
      • C. 20
      • D. 29
    • Question 16
      • If the carbohydrate content of the diet is insufficient to meet the body’s needs for glucose, which of the following can be converted to glucose?
      • A. Urea
      • B. Fatty acids
      • C. Amino acids
      • D. Ketones
    • Question 17
      • What is meant by the amino acid sequence of a protein?
      • A. Number of side chains in the protein
      • B. Folding arrangement of the peptide chain
      • C. Order of appearance of amino acids in the peptide chain
      • D. Order of appearance of only the essential amino acids in the protein
    • Question 18
      • Which of the following is not true about the events during and after absorption of protein digestive breakdown products?
      • A. Most protein eaten ends up as individual amino acids in the blood.
      • B. Small peptides are digested further to amino acids inside the absorptive cells of the small intestine.
      • C. Many whole proteins are absorbed and enter the blood.
      • D. Amino acids travel to the liver via the portal vein.
    • Question 19
      • A hereditary condition caused by an incorrect amino acid in the amino acid sequence of a protein chain is
      • A. kwashiorkor.
      • B. sickle cell anemia.
      • C. marasmus.
      • D. edema.
    • Question 20
      • The chemical bond joining adjacent amino acids is called a(n) _____________ bond.
      • A. glycosidic
      • B. ionic
      • C. amino
      • D. peptide
    • Answer Key – Chapter 6
      • C
      • B
      • C
      • C
      • C
      • B
      • D
      • D
      • C
      • A
      • B
      • B
      • C
      • A
      • C
      • C
      • C
      • C
      • B
      • D