Cell Membrane Transport and Structure

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and support.

Front

What are lipids and their role in the cell membrane?

Back

Lipids are molecules that form the bilayer of the cell membrane, providing structure and flexibility.

Front

What is the significance of proteins in the cell membrane?

Back

Proteins assist in transport, communication, and signaling within and outside the cell.

Front

Define selective permeability in the context of cell membranes.

Back

Selective permeability is the ability of the cell membrane to allow certain substances to pass while blocking others.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

Explain osmosis.

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy.

Front

What are the main types of cell membrane transport?

Back

The main types are passive transport (diffusion, osmosis) and active transport.

Front

What is the role of cholesterol in the cell membrane?

Back

Cholesterol helps to stabilize the cell membrane's fluidity and structure.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the cell membrane as a flexible layer of lipids with embedded proteins.