Cell and Cell Transport

Front

What is the function of the nuclear envelope?

Back

The nuclear envelope encloses the nucleus and its contents, providing a barrier that separates the nucleus from the cytoplasm.

Front

What type of cell transport involves the engulfing of materials into the cell?

Back

Endocytosis is the type of cell transport that involves the engulfing of materials into the cell.

Front

Define passive transport.

Back

Passive transport is the movement of particles across a cell membrane from an area of high concentration to an area of low concentration without the use of energy.

Front

What are the two main parts of a phospholipid?

Back

The two main parts of a phospholipid are hydrophilic heads and hydrophobic tails.

Front

Describe simple diffusion.

Back

Simple diffusion is the process where molecules move from an area of high concentration to an area of low concentration without the need for energy.

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 particles against their concentration gradient, from low to high concentration, requiring energy.

Front

What role do transport proteins play in cell membranes?

Back

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

Front

What is the difference between endocytosis and exocytosis?

Back

Endocytosis is the process of taking materials into the cell, while exocytosis is the process of expelling materials from the cell.

Front

What is a selectively permeable membrane?

Back

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