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27.Arginine is the most basic of the 20 amino acids because its side chain is most cells conditions. A. Very highly charged B. Hydrophobic C. Titrated D. Protonated E. Negatively charged under 28. Concentrations of some proteins cannot be estimated by UV spectrophotometry because they are A High in non-absorbing amino acids

27.Arginine is the most basic of the 20 amino acids because its side chain is most cells conditions. A. Very highly charged B. Hydrophobic C. Titrated D. Protonated E. Negatively charged under 28. Concentrations of some proteins cannot be estimated by UV spectrophotometry because they are A High in non-absorbing amino acids

Biochemistry
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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### Multiple Choice Questions on Amino Acids and Proteins #### Question 27 *Arginine is the most basic of the 20 amino acids because its side chain is ________ under most cell conditions.* **Options:** - A. Very highly charged - B. Hydrophobic - C. Titrated - D. Protonated - E. Negatively charged #### Question 28 *Concentrations of some proteins cannot be estimated by UV spectrophotometry because they are ____________.* **Options:** - A. High in non-absorbing amino acids - B. Low in tryptophan and tyrosine - C. Low in protein - D. High in aromatic amino acids ### Explanation: **For Question 27:** Arginine is identified as the most basic amino acid due to its side chain properties in cellular environments. The side chain is ________ (the correct option from the choices given) under physiological conditions, which contributes to its basic nature. **For Question 28:** Some proteins' concentrations cannot be accurately measured using UV spectrophotometry. This technique relies on the absorption properties of amino acids like tryptophan and tyrosine. Therefore, the inability to estimate concentrations is due to ___________ (the correct option from the choices given). <Please fill in the blanks with the correct multiple-choice answers based on your understanding of amino acids and protein measurement techniques.>
Transcribed Image Text:### Multiple Choice Questions on Amino Acids and Proteins #### Question 27 *Arginine is the most basic of the 20 amino acids because its side chain is ________ under most cell conditions.* **Options:** - A. Very highly charged - B. Hydrophobic - C. Titrated - D. Protonated - E. Negatively charged #### Question 28 *Concentrations of some proteins cannot be estimated by UV spectrophotometry because they are ____________.* **Options:** - A. High in non-absorbing amino acids - B. Low in tryptophan and tyrosine - C. Low in protein - D. High in aromatic amino acids ### Explanation: **For Question 27:** Arginine is identified as the most basic amino acid due to its side chain properties in cellular environments. The side chain is ________ (the correct option from the choices given) under physiological conditions, which contributes to its basic nature. **For Question 28:** Some proteins' concentrations cannot be accurately measured using UV spectrophotometry. This technique relies on the absorption properties of amino acids like tryptophan and tyrosine. Therefore, the inability to estimate concentrations is due to ___________ (the correct option from the choices given). <Please fill in the blanks with the correct multiple-choice answers based on your understanding of amino acids and protein measurement techniques.>
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