Glucose uptake into skeletal muscle is an example of which of the following transport processSelect one:a. Simple diffusionb. Co-transportc. Primary active transportd. Counter-transporte. Facilitated diffusion

Glucose uptake into skeletal muscle is an example of facilitated diffusion.

Here's why:

1. Simple diffusion: This is a process where molecules move from an area of high concentration to an area of low concentration. Glucose uptake into skeletal muscle is not an example of this because it requires a specific transporter (GLUT4) to facilitate its movement across the cell membrane.

2. Co-transport: This is a process where two substances are simultaneously transported across a membrane by a protein, or 'pump'. Glucose uptake into skeletal muscle is not an example of this because glucose is not transported simultaneously with another substance.

3. Primary active transport: This is a process that uses ATP to pump molecules against their concentration gradient. Glucose uptake into skeletal muscle is not an example of this because it does not require ATP.

4. Counter-transport: This is a type of active transport that involves the simultaneous movement of two molecules across a membrane, but in opposite directions. Glucose uptake into skeletal muscle is not an example of this.

5. Facilitated diffusion: This is a process where molecules move across cell membranes through protein channels. This is the process that best describes glucose uptake into skeletal muscle. The glucose transporter GLUT4 facilitates the movement of glucose across the cell membrane from an area of high concentration (in the blood) to an area of low concentration (in the muscle cell).

So, the correct answer is e. Facilitated diffusion.