Question

what is the function of receptors on the plasma membrane?
a.) to store genetic information
b.) to bind with specific substances and create changes in the cell
c.) to produce energy for the cell
d.) to synthesize proteins

Explanation:

Plasma membrane receptors are proteins. Their key function is to bind with specific substances (like hormones, neurotransmitters). This binding triggers intracellular changes (e.g., signal transduction pathways).

• Option a: Storing genetic information is the role of DNA (in the nucleus for eukaryotes), not plasma - membrane receptors.
• Option c: Producing energy for the cell is mainly done by organelles like mitochondria (through cellular respiration) or chloroplasts (in plants, through photosynthesis), not plasma - membrane receptors.
• Option d: Synthesizing proteins is the job of ribosomes (either free in the cytoplasm or attached to the endoplasmic reticulum), not plasma - membrane receptors.

Answer:

B. To bind with specific substances and create changes in the cell