Polylysine and polyglutamate are two examples of synthetic polypeptides that can assume an α‑helical structure under appropriate conditions. Identify which two synthetic polypeptides can form an α‑helix at the indicated pH values.

a. Polylysine at pH 13
b. Polyglutamate at pH 7
c. Polyglutamate at pH 2
d. Polylysine at pH 2
e. Polylysine at pH 7
f. Polyglutamate at pH 13

b) nuclear ive learned that in a pedtrodic table

points

explanation:

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o