Biology Milestone Assessment Prep '20-'21

Front

What is active transport?

Back

Active transport is the process by which cells move substances against their concentration gradient, requiring energy (ATP).

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

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 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

What role do enzymes play in metabolic reactions?

Back

Enzymes speed up metabolic reactions, allowing organisms to obtain energy more quickly.

Front

What is the function of the Golgi apparatus?

Back

The Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Front

What is facilitated diffusion?

Back

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

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of solutes.

Front

What is the significance of the concentration gradient in transport processes?

Back

The concentration gradient is the difference in concentration of a substance across a space, driving passive transport processes.

Front

What is the role of lysosomes in a cell?

Back

Lysosomes contain enzymes that break down waste materials and cellular debris.