An action potential involves the transfer SODIUM and POTASSIUM ions across an axon's membrane.
During depolarization, when the ion channels open, they allow the influx of sodium ions into the cell, thus changing the electro-chemical gradient of the cell, in order to counter balance this, potassium ions will be allowed to flow out of the cell.

5 0

3 years ago

Lipids such as cholesterol are made by the

Feliz [49]

The main function of the smooth ER is to make hormones and lipids.

5 0

4 years ago

The Big Bang theory states that _____.

steposvetlana [31]

Answer:

The big bang theory is states that universe began as just a single point, then expanded and stretched to grow as large as it is right now.

Hope this helps........

5 0

2 years ago

What is the main sugar used by cells for energy?

butalik [34]

Answer:

The answer is GLUCOSE.

Explanation:

Glucose is the main sugar used by cells for energy. Glucose is derived from the digestion of carbohydrates. In humans, glucose is usually absorbed into the blood from the small intestine, the blood then carry the blood around the body, allowing each cell to have access to the glucose it needs.

If the quantity of glucose in the blood is more than needed per time, the body usually store the excess glucose as glycogen, the glycogen will be turned to glucose and release for cell use when the quantity of sugar in the blood is low. In the absence of glycogen, other macro nutrients such as lipids and proteins can also be converted to glucose via gluconeogenesis when the concentration of glucose in the blood is low.

The cells oxidize the glucose and convert it to energy in form of ATP, which they use to carry out their life activities.

7 0

3 years ago