Cell Transport

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What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through passive or active processes.

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What is osmosis?

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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What is diffusion?

Back

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

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What is equilibrium in the context of cell transport?

Back

Equilibrium is the state where the concentration of substances is equal inside and outside the cell, resulting in no net movement of water.

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What is endocytosis?

Back

Endocytosis is an active transport process where the cell engulfs substances from the outside environment, bringing them into the cell.

Tags

NGSS.HS-LS2-3

Front

What is exocytosis?

Back

Exocytosis is an active transport process where substances are expelled from the cell by vesicles fusing with the cell membrane.

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What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.

Tags

NGSS.HS-LS1-3

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (ATP) to occur.

Tags

NGSS.HS-LS2-3

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Tags

NGSS.HS-LS1-3