Season 3 Review

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, against the concentration gradient, using energy (ATP).

Front

What organelle is unique to plant cells?

Back

Chloroplasts are organelles found only in plant cells, responsible for photosynthesis.

Front

What is an Allosteric Site?

Back

An Allosteric Site is a specific site on an enzyme where a molecule can bind, causing a change in the shape of the active site and affecting enzyme activity.

Front

What happens to enzyme activity at high temperatures?

Back

Enzyme activity declines at high temperatures due to denaturation, which is the alteration of the enzyme's structure.

Front

Is the cell membrane solid and rigid?

Back

False. The cell membrane is fluid and flexible, allowing for movement and interaction of its components.

Front

What is facilitated diffusion?

Back

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

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 passive movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is denaturation in enzymes?

Back

Denaturation is the process in which an enzyme loses its functional shape due to external factors like temperature or pH, leading to a loss of activity.

Front

What is the function of chloroplasts?

Back

Chloroplasts are responsible for photosynthesis, converting light energy into chemical energy in the form of glucose.