T7D5 Cell Membrane

Front

What is the primary function of channel proteins in the cell membrane?

Back

Channel proteins allow certain substances to enter or leave the cell.

Front

What is NOT a characteristic of the cell membrane?

Back

The cell membrane does not contain digestive enzymes.

Front

What is the hydrophilic portion of a phospholipid?

Back

The hydrophilic portion of a phospholipid is the 'head' that is attracted to water.

Front

What is the structure of a phospholipid?

Back

A phospholipid consists of a hydrophilic 'head' and two hydrophobic 'tails'.

Front

What is the role of the cell membrane?

Back

The cell membrane serves as the protective outer layer that controls what enters and leaves the cell.

Front

What are the main components of the cell membrane?

Back

The main components of the cell membrane are phospholipids, proteins, cholesterol, and carbohydrates.

Front

How do substances move across the cell membrane?

Back

Substances can move across the cell membrane through passive transport, active transport, and facilitated diffusion.

Front

What is the fluid mosaic model?

Back

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

Front

What is the significance of cholesterol in the cell membrane?

Back

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

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which substances move across the cell membrane with the help of transport proteins.