Question

Understand alpha helices and beta pleated sheets Question Which of the following statements is not true about R groups in B-pleated sheet? a. The R groups of the peptide chain point outside. b. The R groups are attached to the carbons and extend above and below the folds of the pleat. c. The amino acids tend to have smaller R groups. Select the correct answer below: a and b a and c b and c only a FEEDBACK MORE INSTRUCTION SUBMIT Content attribution

Answer 1

(a) is True because R group is present outside and parallel to  $\beta$-pleated sheet.

(b) is False because R group is parallel to $\beta$ -pleated sheet not below or above.

(c) is True because substituents R is attached to $\alpha$ -carbon of amino acids on adjacent chains and to maximize the Hydrogen bonding interactions, R should be small.

Hence correct answer would be a and c.