Cell Transport Classwork

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy in the form of ATP.

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of higher concentration to an area of lower concentration.

Front

Define osmosis.

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of high water concentration to an area of low water concentration.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, there is more solute outside the cell, causing water to move out of the cell, leading to cell shrinkage.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solute outside the cell compared to the inside, causing water to move into the cell, leading to cell swelling.

Front

What is equilibrium in terms of cell transport?

Back

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

Front

What are phospholipids?

Back

Phospholipids are molecules that make up the cell membrane, consisting of hydrophilic (water-attracting) heads and hydrophobic (water-repelling) tails.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from the outside environment, bringing them into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials to the outside environment, often involving the fusion of vesicles with the cell membrane.

Front

What are transmembrane proteins?

Back

Transmembrane proteins are proteins that span the entire cell membrane and are involved in transporting substances across the membrane.