Active and Passive Transport

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

The passive movement of molecules from a region of higher concentration to a region of lower concentration without energy.

The process of molecules moving freely across the cell membrane without any energy requirement.

The movement of water molecules across a semi-permeable membrane, balancing concentrations on both sides.

The movement of glucose into a cell using energy.

The movement of oxygen from the lungs into the bloodstream.

The active transport of sodium ions out of a cell.

The diffusion of water through a selectively permeable membrane.

It helps in the synthesis of proteins.

It allows cells to maintain concentration gradients, which are essential for various cellular functions.

It facilitates the movement of water across the cell membrane.

It is responsible for the breakdown of glucose.

A measure of the total amount of a substance in a solution.

The difference in the concentration of a substance between two areas, which drives the movement of molecules.

A technique used to separate substances based on their density.

The process of mixing two different substances evenly.

The sodium-potassium pump, which moves sodium out of and potassium into the cell.

Diffusion of oxygen across the cell membrane.

Facilitated diffusion of glucose into the cell.

Endocytosis of large particles into the cell.

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until equilibrium is reached.

Diffusion is the movement of molecules from low concentration to high concentration.

Diffusion is the process of molecules being absorbed by a solvent.

Diffusion is the random movement of particles in a vacuum.

A barrier that allows all substances to pass through without restriction.

A barrier that allows certain substances to pass through while blocking others.

A solid wall that prevents any substance from passing through.

A flexible membrane that changes its permeability based on temperature.

The cell shrinks due to water loss.

Water moves into the cell, causing it to swell and potentially burst.

The cell remains unchanged in size and shape.

The cell becomes rigid and loses its flexibility.

Water moves into the cell, causing it to swell.

Water moves out of the cell, causing it to shrink.

The cell remains the same size and shape.

The cell bursts due to excess water intake.

The movement of solute molecules from high to low concentration.

The diffusion of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

The process of active transport of ions across a membrane.

The absorption of nutrients by plant roots.