Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements:
(1) In a peptide, the number of amino acids and the number of peptide bonds are always equal.
(2) HDL and LDL are examples of lipoproteins.
(3) Tertiary structure interactions in proteins always involve amino acid R groups.

Question

Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
-Statements: 
(1) In a peptide, the number of amino acids and the number of peptide bonds are always equal.
(2) HDL and LDL are examples of lipoproteins.
(3) Tertiary structure interactions in proteins always involve amino acid R groups.

Quizplus · Accepted Answer

(1) is FALSE as the number of peptide bonds is always one less than the number of amino acids in a peptide.
(2) is TRUE as HDL and LDL are both examples of lipoproteins.
(3) is FALSE as tertiary structure interactions in proteins can also involve non-amino acid components like metal ions and disulfide bonds. 
Thus, two out of the three statements are true, making choice B the correct answer.

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