Concept explainers
(a)
Interpretation: The limiting amino acids present in the given protein source, oats has to be stated.
Concept introduction: Limiting amino acids are the essential amino acids which are either absent or present in insufficient amounts in an incomplete dietary protein.
(b)
Interpretation: The limiting amino acids present in the given protein source, rice has to be stated.
Concept introduction: Limiting amino acids are the essential amino acids which are either absent or present in insufficient amounts in an incomplete dietary protein.
(c)
Interpretation: The limiting amino acids present in the given protein source, corn has to be stated.
Concept introduction: Limiting amino acids are the essential amino acids which are either absent or present in insufficient amounts in an incomplete dietary protein.
(d)
Interpretation: The limiting amino acids present in the given protein source, gelatin has to be stated.
Concept introduction: Limiting amino acids are the essential amino acids which are either absent or present in insufficient amounts in an incomplete dietary protein.
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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Which of the following combination is are non-essential amino acids? A. Leucine and Isoleucine B. Isoleucine and Methionine C. Methionine and Asparagine D. Proline and Alaninearrow_forwardWhich of the following amino acid pairs may form hydrogen bonds between their sidechains (select all that apply)? A. Arginine and Aspartate B. Lysine and Glutamate C. Glycine and Cysteine D. Alanine and Aspartate E. Lysine and Asparaginearrow_forwardWhich of the following statements is true about amino acids? a. All twenty (20) of these protein-derived amino acids are a-amino acids, meaning that the amino group is located on the carbon alpha to the carboxyl group. b. For nineteen (19) of the twenty (20) amino acids, the a-amino group is primary. Glycine is different; its a-amino group is secondary. c. With the exception of proline, the a-carbon of each amino acid is a chiral center. As shown in Table 27.1, all 19 chiral amino acids have the same relative d. Both a & carrow_forward
- Draw each amino acid in its dipolar ion form. a. Thr b. Ala c. Leu d. Lysarrow_forwardSelect the two most hydrophobic amino acids. A. Leucine and Isoleucine OB. Arginine and Lysine OC Cysteine and Methionine D. Alanine and Glycine E. Glutamine and Asparaginearrow_forwardIdentify which of the following pairs of amino acid residues can have hydrogen bonding between their side chains. A. Alaine and Glycine B. Leucine and Isoleucine C. Valinc and Asparaginc D. Threonine and Tryrosinearrow_forward
- Which of the following might cause the denaturation of a protein? Select all that apply. A. Highly acidic conditions B. Highly basic conditions C. High concentrations of salt D. High heatarrow_forwardIndicate whether each of the following amino acids is polar: a. lysine b. tyrosine c. leucine d. asparagine e. proline f. cysteine g. glutamic acid h. valine i. histidine j. glycinearrow_forwardExplain the difference between essential and nonessential amino acids. How many of each are there? Identify and describe two essential and two nonessential amino acids. What does the term "conditionally essential" mean? Give an example.arrow_forward
- Define the following terms: a. lactone b. aldaric acid c. aldonic acid d. uronic acid e. epimerizationarrow_forwardClassify each of the following amino acid as polar or nonpolar. If polar, indicate if the R group is neutral, acidic, it basic. Indicate if each is hydrophobic or hydrophilic. a. lysine b. arginine c. methionine d. tyrosinearrow_forwardWhich of the following might cause the denaturation of a protein? Select all that apply. A.)Highly acidic conditions B.)Highly basic conditions C.)High concentrations of salt D.)High heatarrow_forward