13. The amino acids lysine and tryptophan are not found in many plants. Why is this of concern to vegetarians who consume no meat in their diet? a. Lysine and tryptophan are essential amino acids. b. The human body cannot synthesize these amino acids, and must get them from the diet. c. Since proteins are made from combinations of 20 different amino acids, people need all 20 amino acids. d. All of the above. 14. What level of protein structure is associated with the order in which amino acids are linked together in a protein? c. tertiary structure d. quaternary structure a. primary structure b. secondary structure 15. Which of the following describes the quaternary structure of a protein? a. the structure resulting from hydrogen bonding between the electronegative nitrogen and oxygen atoms and the partially positive hydrogen atoms b. the shape resulting from the union of more than one polypeptide chain c. the structure resulting from the bonding interactions between the side groups of the amino acids d. the sequence of amino acids linked together with peptide bonds 16. What is the difference between pyrimidine bases and purine bases? a. There are three types of pyrimidine bases (uracil, thymine, and nd quanine).

13. The amino acids lysine and tryptophan are not found in many plants. Why is this of concern to vegetarians who consume no meat in their diet? a. Lysine and tryptophan are essential amino acids. b. The human body cannot synthesize these amino acids, and must get them from the diet. c. Since proteins are made from combinations of 20 different amino acids, people need all 20 amino acids. d. All of the above. 14. What level of protein structure is associated with the order in which amino acids are linked together in a protein? c. tertiary structure d. quaternary structure a. primary structure b. secondary structure 15. Which of the following describes the quaternary structure of a protein? a. the structure resulting from hydrogen bonding between the electronegative nitrogen and oxygen atoms and the partially positive hydrogen atoms b. the shape resulting from the union of more than one polypeptide chain c. the structure resulting from the bonding interactions between the side groups of the amino acids d. the sequence of amino acids linked together with peptide bonds 16. What is the difference between pyrimidine bases and purine bases? a. There are three types of pyrimidine bases (uracil, thymine, and nd quanine).

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter47: Animal Nutrition

Section: Chapter Questions

Problem 8TYK: The role of the liver in digestion is to: a. synthesize aminopeptidase and dipeptidase to...

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