QUESTION 21Amino acidsA. are classified based on the ""R"" group (side chain)B. Are zwitterionic, having both acid (amine) and base (carboxylic acid) componentsO C. Are a component of nitrogenous bases.D. Are only found in proteins.E. Are not chiral molecules.QUESTION 22Which of the following is NOT a difference with the twenty standard R-groups of amino acids?A. shapeO B. chargeO C. hydrogen-bonding capacityO D.chiralityO E. size

21. Amino acids are classified based on the "R" group (side chain). Amino acids have both amine and…

Answered: QUESTION 22 Which of the following is…

QUESTION 22 Which of the following is NOT a difference with the twenty standard R-groups of amino acids? O A. shape B. charge O C. hydrogen-bonding capacity D. chirality E size

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Concept explainers

Nitrogen metabolism

Nitrogen metabolism is the synthesis, utilization or uptake, breakdown, and excretion of nitrogenous compounds in the body. The nitrogen metabolism encompasses nitrogen fixation, biosynthesis, and the breakdown of amino acids, purines, and pyrimidine. Since nitrogen-containing compounds are required for various life processes, nitrogen is an important element of life.

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