Indicate whether the following statements describe the primary, secondary, tertiary, or quaternary protein structure. (more than one can apply).
a. r groups interact to form disulfide bonds or ionic bonds.
b. several polypeptide chains in a \beta-pleated sheet are held together by hydrogen bonds between adjacent chains.
c. hydrogen bonding between amino acids in the same polypeptide gives a coiled shape to the protein.

A. R groups interact to form disulfide bonds or ionic bonds. - tertiary and quaternary
 
B. Several polypeptide chains in a \beta-pleated sheet are held together by hydrogen bonds between adjacent chains. secondary, tertiary, or quaternary

C. Hydrogen bonding between amino acids in the same polypeptide gives a coiled shape to the protein. primary

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

Bthe s the