Question

proteins have many functions. which function is not related to protein?
transporting substances in the body.
regulating cellular processes.
insulating against heat loss.
catalyzing chemical reactions.
providing structural support.

Explanation:

• Transporting substances: Proteins like hemoglobin carry oxygen, so this is a protein function.
• Regulating cellular processes: Hormonal proteins (e.g., insulin) regulate cell activity, so this is a protein function.
• Insulating against heat loss: This is the primary function of lipids (fat), not proteins.
• Catalyzing reactions: Enzymes, which are proteins, speed up chemical reactions, so this is a protein function.
• Structural support: Proteins like collagen and keratin provide structural support, so this is a protein function.

Answer:

Insulating against heat loss.