Review Energy Conversions in Organisms (B.11A & B.5C)

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration, resulting in the equal distribution of particles.

Front

What is osmosis?

Back

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

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, including processes like diffusion and osmosis.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy, often through protein pumps.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

Front

What are the two main types of transport across cell membranes?

Back

The two main types of transport are passive transport (does not require energy) and active transport (requires energy).

Front

What is facilitated diffusion?

Back

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

Front

What role do membranes play in osmosis?

Back

Membranes act as barriers that allow water to pass through while restricting the movement of solutes, facilitating osmosis.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas, driving the movement of particles.

Front

How do plants perform cellular respiration?

Back

Plants perform cellular respiration in their mitochondria, using glucose produced during photosynthesis.