Which concept states that all living things are made up of cells and that new cells arise from existing cells?

Which concept states that all living things are made up of cells and that new cells arise from existing cells?

• A. Cell Theory
• B. Cell Membrane
• C. Nucleus
• D. Organelles

Answer: (A)

Cell Theory states that all living things are made up of cells and that new cells arise from existing cells. This principle ties together life from single cells to complex organisms, explaining growth, development, and tissue repair. The two main ideas are that organisms are composed of cells and that cells reproduce by dividing from pre-existing cells. While terms like the cell membrane, nucleus, or organelles describe parts or boundaries of cells, they do not themselves state the overarching rule about the cellular basis of life and how new cells form.

Cell Theory states that all living things are made up of cells and that new cells arise from existing cells. This principle ties together life from single cells to complex organisms, explaining growth, development, and tissue repair. The two main ideas are that organisms are composed of cells and that cells reproduce by dividing from pre-existing cells. While terms like the cell membrane, nucleus, or organelles describe parts or boundaries of cells, they do not themselves state the overarching rule about the cellular basis of life and how new cells form.