Question

1. explain the specific role or function of each of these types of membrane proteins. a. channel protein - b. receptor protein - c. marker protein -

Explanation:

a. Channel Protein - Facilitates the passive transport of ions and small - polar molecules across the cell membrane by providing a hydrophilic pathway.
b. Receptor Protein - Binds to specific ligands (such as hormones, neurotransmitters) and initiates a cellular response, like signal transduction.
c. Marker Protein - Identifies the cell to other cells. For example, major histocompatibility complex (MHC) proteins are marker proteins that help the immune system recognize self - cells.

Answer:

a. Facilitates passive transport of ions and small - polar molecules.
b. Binds to specific ligands and initiates cellular response.
c. Identifies the cell to other cells.