Passive Transport

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy. It relies on the concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What does equilibrium mean in the context of cells?

Back

Equilibrium is the state where the concentration of substances is equal inside and outside the cell, resulting in no net movement of water.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst.

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 or dehydrate.

Front

What is diffusion?

Back

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

Front

How does temperature affect passive transport?

Back

Higher temperatures increase the kinetic energy of molecules, which can speed up the rate of passive transport.

Front

What role do proteins play in passive transport?

Back

Proteins can act as channels or carriers to facilitate the movement of specific molecules across the cell membrane.

Front

What is homeostasis?

Back

Homeostasis is the process by which cells and organisms maintain a stable internal environment despite changes in external conditions.