Cellular Biology Quiz

Cellular Biology

• Cells are the basic structural and functional units of life.
• Cells can be thought of as tiny rooms that contain all the components necessary for life.

Active Transport

• Active transport is the movement of molecules from an area of low concentration to an area of high concentration.
• This process requires energy, usually in the form of ATP.
• Active transport is necessary for cells to maintain proper internal environments and to regulate the concentration of certain molecules.

Cilia

• Cilia are small, hair-like structures that protrude from the surface of cells.
• Cilia are involved in movement, sensing, and signaling.
• They can be found in many types of cells, including epithelial cells, nerve cells, and sperm cells.

Cytoplasm

• Cytoplasm is the jelly-like substance inside a cell membrane.
• It is composed of water, salts, sugars, and various organelles.
• Cytoplasm provides a medium for chemical reactions, supports cell division, and helps maintain cell shape.

Diffusion

• Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.
• This process occurs naturally, without the need for energy input.
• Diffusion helps to distribute nutrients, oxygen, and other essential molecules throughout the cell.