Unit 2 practices

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy (ATP).

Front

What is an example of passive transport?

Back

Osmosis is an example of passive transport, where water moves across a membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the main characteristic of active transport?

Back

Active transport requires energy (ATP) to move substances against their concentration gradient.

Front

What is the significance of a high surface area to volume ratio in cells?

Back

A high surface area to volume ratio allows for more efficient exchange of materials (like nutrients and waste) through the plasma membrane.

Front

Do plant cells have a plasma membrane?

Back

Yes, plant cells have both a cell wall and a plasma membrane.

Front

What is compartmentalization in cells?

Back

Compartmentalization refers to the division of a cell into different regions, allowing for specialized functions to occur in each area.

Front

Why is compartmentalization important for cellular function?

Back

It allows different processes to occur in specialized areas, improving efficiency and organization within the cell.

Front

What is the role of the plasma membrane?

Back

The plasma membrane regulates what enters and exits the cell, maintaining homeostasis.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is the difference between passive and active transport?

Back

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