Cell Transport

Front

What is osmosis?

Back

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a semi-permeable membrane.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration until they are evenly distributed.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane using energy, typically from an area of low concentration to an area of high concentration.

Front

What is exocytosis?

Back

Exocytosis is the process by which large particles, such as waste materials, are expelled from a cell.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in large particles or liquids by engulfing them in a membrane.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances from high to low concentration, while active transport requires energy to move substances from low to high concentration.

Front

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 molecules.

Front

What role do proteins play in facilitated diffusion?

Back

Proteins act as channels or carriers that help specific molecules cross the cell membrane during facilitated diffusion.

Front

What is the significance of cell transport?

Back

Cell transport is essential for maintaining homeostasis, allowing cells to take in nutrients, expel waste, and communicate with their environment.