Unit 2 Cell Transport

Front

What is the function of a Protein Channel in cell transport?

Back

Protein Channels facilitate the movement of specific molecules across the cell membrane, functioning in both active and passive transport.

Front

What is Osmosis?

Back

Osmosis is the passive transport of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

Define Homeostasis.

Back

Homeostasis is the process by which living organisms regulate their internal environment to maintain stable, constant conditions, despite external changes.

Front

What is a Response in biological terms?

Back

A Response is a change in an organism's behavior or physiology as a result of a stimulus.

Front

What is a Solution?

Back

A Solution is a uniform mixture of two or more substances, where one substance (solute) is dissolved in another (solvent), such as lemonade.

Front

What is the difference between Active and Passive Transport?

Back

Active Transport requires energy to move substances against their concentration gradient, while Passive Transport does not require energy and moves substances along their concentration gradient.

Front

What role do Molecular Pumps play in cell transport?

Back

Molecular Pumps are proteins that use energy to transport ions or molecules across the cell membrane against their concentration gradient.

Front

Explain the term 'Concentration' in the context of solutions.

Back

Concentration refers to the amount of solute present in a given volume of solution, often expressed in terms of molarity.

Front

What is the Phospholipid Bilayer?

Back

The Phospholipid Bilayer is a double layer of phospholipids that makes up the cell membrane, providing a barrier to most water-soluble substances.

Front

What is Endocytosis?

Back

Endocytosis is the process by which cells engulf external substances, bringing them into the cell within a vesicle.