How do small ions like Na⁺ of K⁺ pass through the plasma membrane? A)gated channels B)ion channels C)carrier proteins D)simple diffusion

Question

Quizplus · Accepted Answer

Small ions like Na+ and K+ pass through the plasma membrane through ion channels. Ion channels are transmembrane proteins that create a pore or channel through which ions can diffuse down their concentration gradient. Gated ion channels open and close in response to specific stimuli, while other ion channels are always open. This allows for Na+ and K+ to move from an area of high concentration to an area of low concentration, or from one side of the membrane to the other. Carrier proteins are used for larger molecules, such as glucose or amino acids, and simple diffusion does not work for charged or polar molecules like Na+ or K+.

How Do Small Ions Like Na+ of K+ Pass Through

How Do Small Ions Like Na⁺ of K⁺ Pass Through