Cell Homeostasis

Front

What is the definition of diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Front

What is the definition of osmosis?

Back

Osmosis is the movement of water molecules from an area of high water concentration to an area of low water concentration through a semi-permeable membrane.

Front

What is the main difference between osmosis and diffusion?

Back

The main difference is that diffusion refers to the movement of particles, while osmosis specifically refers to the movement of water.

Front

What type of transport requires energy to move particles across a membrane?

Back

Active transport requires energy to move particles from an area of low concentration to an area of high concentration.

Front

What is active transport?

Back

Active transport is the process of moving particles against their concentration gradient, which requires energy.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What happens to a cell in a hypertonic solution?

Back

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

Front

What is a hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes is lower outside the cell than inside, leading to water moving into the cell.

Front

What is isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

What is the role of the plasma membrane in homeostasis?

Back

The plasma membrane regulates the movement of substances in and out of the cell, maintaining homeostasis.