cell membrane

Front

What is the primary function of the cell membrane?

Back

The cell membrane controls what enters and leaves the cell, maintaining homeostasis.

Front

What is the structure of the cell membrane?

Back

The cell membrane is primarily composed of a phospholipid bilayer with embedded proteins.

Front

What does it mean for the cell membrane to be semipermeable?

Back

Semipermeable means that the cell membrane allows certain substances to pass through while blocking others.

Front

What are channel proteins?

Back

Channel proteins are integral membrane proteins that facilitate the transport of ions and molecules across the cell membrane.

Front

What is passive transport?

Back

Passive transport is the movement of particles across the membrane from an area of high concentration to an area of low concentration without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of particles against their concentration gradient, requiring energy (ATP) to do so.

Front

What is endocytosis?

Back

Endocytosis is a type of active transport where the cell membrane engulfs particles to form a vesicle and bring them into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels materials in vesicles that fuse with the cell membrane.

Front

What role do glycoproteins play in the cell membrane?

Back

Glycoproteins are involved in cell recognition and signaling, helping cells communicate with each other.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the cell membrane as a dynamic and flexible structure with various proteins floating in or on the fluid lipid bilayer.