Cellular Transport Review

Front

What is cellular transport?

Back

Cellular transport refers to the movement of substances across the cell membrane, which can occur through various mechanisms such as diffusion, osmosis, and active transport.

Tags

NGSS.HS-LS2-3

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (usually from ATP) to move molecules from low to high concentration.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, typically occurring through diffusion or osmosis.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink or crenate due to the higher concentration of solutes outside the cell.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst due to the lower concentration of solutes outside the cell.

Front

What is equilibrium in the context of cellular transport?

Back

Equilibrium is the state where the concentration of a substance is equal on both sides of a membrane, resulting in no net movement of that substance.

Front

What is a selectively permeable membrane?

Back

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

Tags

NGSS.HS-LS1-3

Front

What is the role of transport proteins?

Back

Transport proteins facilitate the movement of specific molecules across the cell membrane, either passively or actively.