Cell Structure and Function Quiz

The main components of a cell include the cell membrane, cytoplasm, and nucleus. The cell membrane controls the entry and exit of substances, the cytoplasm houses the organelles and provides a medium for cellular processes, and the nucleus contains the genetic material and controls cell activities.

The cell theory states that all living organisms are composed of cells, cells are the basic units of structure and function in living organisms, and cells arise from pre-existing cells. The cell theory was proposed by Matthias Schleiden and Theodor Schwann in the mid-19th century.

There are two main types of cells: prokaryotic cells and eukaryotic cells. Prokaryotic cells, found in bacteria and archaea, lack a nucleus and other membrane-bound organelles. They are simpler in structure and function. Eukaryotic cells, found in plants, animals, fungi, and protists, have a true nucleus and membrane-bound organelles. They are more complex and specialized in their functions, such as carrying out specific metabolic processes or providing structural support.