Cell Membrane and Transport

Front

What is the primary function of the cell membrane?

Back

To form a protective boundary between the inside and outside of the cell and to control what enters and leaves the cell.

Front

What is the structure of the cell membrane?

Back

The cell membrane is composed of a double layer of phospholipids.

Front

What happens to a cell in an isotonic solution?

Back

The cell will remain unchanged.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will swell.

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing the cell to shrink.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing the cell to swell.

Front

What is the role of phospholipids in the cell membrane?

Back

Phospholipids form the basic structure of the cell membrane, creating a bilayer that is hydrophobic on the inside and hydrophilic on the outside.

Front

What is the significance of the fluid mosaic model?

Back

The fluid mosaic model describes the cell membrane as a dynamic and flexible structure with various proteins embedded in or attached to the phospholipid bilayer.

Front

What is the difference between passive and active transport?

Back

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