HISSER mnemonic is associated with which protein functions?

• A. Hormones, immunity, storage, structure, enzymes, receptors
• B. Hormones, immunity, storage, structure, receptors, enzymes
• C. Hormones, immunity, signaling, structure, enzymes, receptors
• D. Hormones, immunity, storage, signaling, receptors, enzymes

Answer: (A)

HISSER helps you remember six broad roles proteins can play: hormones, immunity, storage, structure, enzymes, receptors. Each term points to a major function: hormones are regulatory signaling molecules, immunity covers antibodies and other immune proteins, storage refers to proteins that hold nutrients or minerals, structure includes fibrous proteins like collagen and keratin that provide support, enzymes are catalysts that speed up chemical reactions, and receptors are proteins that Detect and respond to signals.

The best option matches this exact set of functions in the order given: hormones, immunity, storage, structure, enzymes, receptors. The other choices swap or replace terms (for example using signaling instead of storage), which means they don’t align with the mnemonic’s standard six categories.