During a hair styling procedure, a person uses a flat iron to straighten their hair. Which type of bond in the alpha-keratin is temporarily disrupted?
Q1. During a hair styling procedure, a person uses a flat iron to straighten their hair. Which type of bond in the alpha-keratin is temporarily disrupted?
Answer: Hydrogen bonds
Explanation: Hydrogen bonds stabilize the alpha-helix in keratin; heat breaks these bonds to reshape hair. Peptide bonds are covalent and resistant to heat.