According to the cell theory, which describes cells?
All organisms are composed of multiple cells.
All cells have the same structure and function.
Cells are found in everything on Earth.
All living cells come from other living cells.
All living cells come from other living cells.
The cell theory, which is a fundamental concept in biology, describes cells as follows:
1. All organisms are composed of multiple cells: This means that all living organisms, ranging from simple single-celled organisms to complex multicellular organisms, are made up of one or more cells.
2. All cells have the same structure and function: Although cells can vary in size, shape, and specialized functions, they all share certain basic structural and functional characteristics. These include a cell membrane, cytoplasm, and genetic material (DNA/RNA).
3. Cells are found in everything on Earth: Cells are the building blocks of life and are found in all living organisms, including plants, animals, fungi, and microorganisms. They are also present in non-living structures such as viruses, which are considered non-living or acellular particles.
4. All living cells come from other living cells: This principle, known as the law of biogenesis, states that new cells are produced by the replication and division of pre-existing cells. In other words, cells are not spontaneously generated but arise from pre-existing cells through processes like cell division.
Overall, the cell theory provides a framework for understanding the organization and functioning of life at the cellular level.