The smallest unit that can perform all life processes

An organism that consists of a single cell

An organism that consists of more than one cell

The organelle that is the site of cellular respiration, which releases energy for use by the cell

A phospholipid layer that covers a cell’s surface and acts as a barrier between the inside of a cell and the cell’s environment

One of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function

A membrane-bound organelle that contains the cell’s DNA and that has a role in processes such as growth, metabolism, and reproduction

An organelle found in plant and algae cells where photosynthesis occurs

A rigid structure that surrounds the cell membrane and provides support to the cell