Cell Transport

Front

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.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the plasma membrane as a mosaic of components (lipids, proteins, carbohydrates) that move freely and fluidly, allowing for flexibility and functionality.

Front

What is phagocytosis?

Back

Phagocytosis is a type of endocytosis where a cell engulfs large particles or other cells, often referred to as 'cell eating'.

Front

What is the main component of the plasma membrane?

Back

The main component of the plasma membrane is lipids, specifically phospholipids, which form a bilayer.

Front

What does cell theory state?

Back

Cell theory states that cells are the basic unit of life, all living organisms are composed of cells, and all cells arise from pre-existing cells.

Front

What is active transport?

Back

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

Front

What is diffusion?

Back

Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is pinocytosis?

Back

Pinocytosis is a type of endocytosis where a cell engulfs small particles or liquids, often referred to as 'cell drinking'.

Front

What role do proteins play in the plasma membrane?

Back

Proteins in the plasma membrane serve various functions, including transport, acting as channels or carriers, and facilitating communication between the cell and its environment.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others, maintaining the internal environment of the cell.