Which of the following statements best describes the role of disulfide bonds in human hair?
A) Disulfide bonds in human hair are primarily responsible for hair color by binding with melanin.
B) Disulfide bonds in human hair contribute to the hair's strength and shape by linking cysteine residues in keratin proteins.
C) Disulfide bonds in human hair facilitate the growth rate by enhancing the supply of nutrients to the hair follicle.
D) Disulfide bonds in human hair are involved in the hair's ability to absorb moisture from the environment

Explanation: Disulfide bonds are mainly known for maintaining structure and rigidity in protein molecules due to their covalent bond's strength. This is no different with the proteins found in hair. Disulfide bonds in hair are responsible for maintaining hair's strength, structure, and elasticity.

Disulfide bonds can be broken with excess application of heat or being exposed to chlorinated or salt water. This is why excessively hair drying our hair or swimming in pools can result in damage to hair structure and rigidity, as these activities weaken and destroy disulfide bonds in our hair.