Receptor proteins primarily play a key role in receiving and interpreting chemical signals from outside the cell, allowing the cell to respond to changes in its environment. Based on the options given, none of them exactly match the typical function of receptor proteins directly. However, interpreting "Controls the movement of substances across the plasma membrane" in the broadest sense, receptor proteins can indeed influence this function indirectly by triggering signaling pathways that result in changes in the cell membrane permeability or activity of transport proteins.
So, revise your understanding of the question in terms of how receptor proteins influence cellular processes. The most precise answer aligned with the typical function of receptor proteins in the options provided would still be an indirect association:
**Controls the movement of substances across the plasma membrane** (though this is usually through signaling mechanisms rather than direct transport).
Which of the following is the function of receptor proteins?
Controls the strength and the speed of the heart.
Controls the movement of substances in and out of the cell.
Stores mineral ions, nitrogen, and amino acids.
Controls the movement of substances across the plasma membrane.
1 answer