Unit 2 Review Questions Bank

Front

What is active transport?

Back

Active transport is the movement of particles against the concentration gradient, requiring energy (ATP) to move substances from an area of lower concentration to an area of higher concentration.

Front

What are the monomers of lipids?

Back

The monomers of lipids are glycerol and fatty acids.

Front

Why do plants conduct photosynthesis?

Back

Plants conduct photosynthesis to make glucose, which is used as energy and building material.

Front

What is simple diffusion?

Back

Simple diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration without the use of energy.

Front

What factors can decrease the rate of photosynthesis in plants?

Back

Factors that can decrease the rate of photosynthesis include reduced daylight hours, low carbon dioxide concentration, and extreme weather conditions.

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

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a pigment found in plants that absorbs light energy, primarily from the sun, to drive the process of photosynthesis.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

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

Back

The concentration gradient is crucial in determining the direction of movement for substances; molecules move from areas of high concentration to low concentration in passive transport.