What maintains the secondary structure of a protein?
select one:
a. hydrogen bonds between the amino group of one peptide bond and the carboxyl group of another peptide bond
b. peptide bonds between adjacent amino acids
c. hydrogen bonds between the carboxyl group of one peptide bond and the r group of another amino acid incorrect
d. disulfide bonds between the amino group of one peptide bond and the r group of another amino acid

The correct answer is a. hydrogen bonds between the amino group of one peptide bond and the carboxyl group of another peptide bond.

Explanation:

The secondary structure of proteins are formed by α-helices and β-structures, that can be supported by hydrogen bonds between amine hydrogens and another peptide bond.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .