cell theory

Classical Cell Theory consists of three main principles:

1. All Living Things are Made Up of Cells:

   • Unicellular Organisms: Composed of a single cell (e.g., bacteria).

   • Multicellular Organisms: Composed of multiple cells (e.g., humans).

2. Cell as the Basic Unit of Structure and Function:

   • Cells are fundamental units of all living organisms, containing organelles that perform specific functions.

3. Cells Arise from Pre-Existing Cells:

   • Cells are formed through cell division, specifically via mitosis.

Key Terms:

• Mitosis: A type of cell division leading to two genetically identical daughter cells, essential for growth, development, and repair in multicellular organisms, ensuring full chromosome sets in each daughter cell.