Biology: Cell Transport: Kahoot

Front

What is active transport?

Back

Active transport is the process by which cells use energy to move ions or molecules against their concentration gradient, from an area of lower concentration to an area of higher concentration.

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What is passive transport?

Back

Passive transport is the movement of ions or molecules across a cell membrane without the use of energy, typically moving down their concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses carrier proteins to help move substances across the cell membrane down their concentration gradient.

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What is the sodium-potassium pump?

Back

The sodium-potassium pump is an active transport mechanism that moves sodium ions out of the cell and potassium ions into the cell, essential for maintaining cellular function.

Front

What happens during 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 the role of receptor proteins in cell signaling?

Back

Receptor proteins bind to signal molecules, triggering a response inside the cell, which can include activating second messengers, changing cell permeability, or initiating enzyme activity.

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What is concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of substances during diffusion or active transport.

Front

What is the difference between diffusion and osmosis?

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Diffusion is the movement of solute particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water across a membrane.

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What is a second messenger?

Back

A second messenger is a molecule that relays signals received at receptors on the cell surface to target molecules inside the cell, amplifying the signal.

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What is the significance of membrane permeability?

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Membrane permeability refers to the ability of the cell membrane to allow substances to pass through, which is crucial for maintaining homeostasis and regulating cell function.