CFA: Active Transport

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy in the form of ATP.

Front

What is the role of protein pumps in active transport?

Back

Protein pumps are integral membrane proteins that use energy to transport ions or molecules against their concentration gradient.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances down their concentration gradient.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in large particles or large amounts of small particles by engulfing them in a membrane.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles, releasing them outside the cell.

Front

What is the sodium-potassium pump?

Back

The sodium-potassium pump is a type of protein pump that moves sodium ions out of the cell and potassium ions into the cell, essential for maintaining cellular function.

Front

What is the significance of the calcium pump?

Back

The calcium pump helps regulate calcium ion concentration in cells, which is crucial for various cellular processes, including muscle contraction and neurotransmitter release.

Front

What is the function of vesicles in active transport?

Back

Vesicles are small membrane-bound sacs that transport materials within the cell and facilitate processes like endocytosis and exocytosis.

Front

How does active transport contribute to homeostasis?

Back

Active transport helps maintain the balance of ions and molecules within cells, contributing to homeostasis by regulating internal conditions.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required for active transport processes, enabling protein pumps to move substances against their concentration gradients.