Staar Biology Review 2

Front

What is the plasma membrane's role in cellular homeostasis?

Back

The plasma membrane regulates the movement of substances in and out of the cell, maintaining a stable internal environment.

Front

What are the products of Cellular Respiration that serve as reactants in photosynthesis?

Back

Carbon dioxide and water are the products of cellular respiration that are used in photosynthesis.

Front

What are enzymes?

Back

Enzymes are proteins that act as catalysts to speed up chemical reactions in biological processes.

Front

What is osmosis?

Back

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

Front

How does osmosis occur in animal cells?

Back

Water molecules move across the plasma membrane until solute concentrations are equal on both sides of the membrane.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane proteins.

Front

What are the main components of the plasma membrane?

Back

The plasma membrane is primarily composed of a phospholipid bilayer, proteins, cholesterol, and carbohydrates.

Front

What is the function of ATP in cellular processes?

Back

ATP (adenosine triphosphate) serves as the primary energy currency of the cell, providing energy for various cellular functions.

Front

What is the difference between diffusion and osmosis?

Back

Diffusion is the movement of solutes from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water.