2.4 FLASHCARD on Cell Membrane & Transport

Front

What is diffusion?

Back

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

Front

What happens to molecules in a hypertonic environment?

Back

In a hypertonic environment, water moves out of the cell, causing it to shrink.

Front

What is the function of the plasma membrane?

Back

The plasma membrane acts as a gatekeeper, controlling what enters and exits the cell.

Front

What are the main components of the cell membrane?

Back

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

Front

What is osmosis?

Back

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

Front

What occurs when a cell is placed in distilled water?

Back

When a cell is placed in distilled water, it swells as water enters the cell due to osmosis.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, leading to water entering the cell.

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 equilibrium in the context of diffusion?

Back

Equilibrium is the state where the concentration of molecules is equal on both sides of a membrane.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass while blocking others.