Part one of cell theory?
All organisms are composed of one or more cells
The cell theory is a fundamental principle of biology that describes the basic unit of life, the cell. The cell theory has three main parts:
1. All living things are made up of one or more cells: Every living organism, whether it is a single-celled or multicellular organism, is made up of at least one cell. For example, bacteria are unicellular organisms, and humans are multicellular organisms made up of trillions of cells.
2. The cell is the basic unit of life: The cell is the smallest and most basic unit of life. It is the smallest structure that can perform all the functions necessary for life, such as obtaining nutrients, eliminating waste, carrying out metabolic reactions, and reproducing.
3. All cells arise from pre-existing cells: Cell division is the process by which cells reproduce. This can occur either through asexual reproduction (mitosis) or sexual reproduction (meiosis), but in all cases, new cells are produced from pre-existing cells.
Together, these three principles make up the cell theory, which provides a foundation for our understanding of the structure and function of living organisms.
More Answers:
Understanding the Endosymbiosis Theory: How Eukaryotic Cells Evolved from Prokaryotic CellsUnderstanding the Third Part of Cell Theory: Cells Arise from Pre-existing Cells and Its Implications in Medicine and Biology
The Fundamental Concept of Cell Theory: The Basic Unit of Life in All Organisms