Cell Transport

Front

What is a hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes outside the cell is lower than that inside the cell, causing water to move into the cell, potentially leading to cell swelling.

Front

What is active transport?

Back

Active transport is the process by which molecules move 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 happens to plant cells when placed in a hypertonic solution?

Back

When plant cells are placed in a hypertonic solution, water moves out of the cells, causing them to lose turgor pressure and shrink.

Front

Define hypertonic solution.

Back

A hypertonic solution is one where the concentration of solutes outside the cell is higher than that inside the cell, leading to water moving out of the cell.

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 osmosis?

Back

Osmosis is the movement 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 the role of ATP in active transport?

Back

ATP provides the energy required for active transport to move molecules against their concentration gradient.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of molecules from high to low concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane without the use of energy.

Front

What is turgor pressure?

Back

Turgor pressure is the pressure exerted by the fluid inside the central vacuole of a plant cell against the cell wall, helping maintain the cell's shape and rigidity.