8.2-Cell Unit Review 24-25

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, requiring energy in the form of ATP.

Front

What are the two systems that interact to transfer nutrients from food to muscle tissue?

Back

The digestive system and the circulatory system work together to transfer nutrients from food to muscle tissue.

Front

What is the optimum pH for enzyme activity?

Back

The optimum pH for enzyme activity is the pH at which the enzyme works best, which can vary depending on the enzyme.

Front

Which type of transport requires energy?

Back

Active Transport requires energy to move molecules against their concentration gradient.

Front

What is the monomer of a protein?

Back

The monomer of a protein is an Amino Acid.

Front

Define Passive Transport.

Back

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

Front

What is Osmosis?

Back

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

Front

What is Facilitated Diffusion?

Back

Facilitated Diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What role does the circulatory system play in nutrient transport?

Back

The circulatory system transports nutrients absorbed from the digestive system to cells throughout the body.

Front

What is the function of enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in the body by lowering the activation energy required.