Cell Membrane Structure and Transport

Front

What is the primary function of the cell membrane?

Back

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

Front

Define isotonic solution.

Back

An isotonic solution has the same concentration of solutes as the inside of the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

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

Front

What is a hypotonic solution?

Back

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

Front

What are lipids?

Back

Lipids are macromolecules that make up the majority of the cell membrane, including phospholipids and cholesterol.

Front

What is dynamic equilibrium in the context of cell membranes?

Back

Dynamic equilibrium occurs when materials pass into and out of a cell at equal rates, with no net change in concentration.

Front

What is the role of proteins in the cell membrane?

Back

Proteins in the cell membrane assist in transport, act as receptors, and provide structural support.

Front

What is active transport?

Back

Active transport is the movement of materials against their concentration gradient, requiring energy (ATP).

Front

What is passive transport?

Back

Passive transport is the movement of substances across the cell membrane without the use of energy, following the concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.