1. Cells are the basic unit of life; all living organisms are composed of one or more cells.
2. Cells carry out essential functions such as metabolism, growth, and reproduction.
3. Cells contain genetic material (DNA) that directs their activities and is passed to offspring.
4. Cells are enclosed by a plasma membrane that regulates the passage of materials.
5. Cells may be prokaryotic (lacking a nucleus) or eukaryotic (having a nucleus and organelles).
6. Cells divide to produce new cells, enabling growth and repair in multicellular organisms.
7. Specialized cells in multicellular organisms perform specific functions for the organism’s survival.
8. Cells communicate with each other through chemical signals to coordinate activities.
9. The structure of a cell is adapted to its function (e.g., nerve cells have long extensions for signal transmission).
10. All cells arise from pre-existing cells through cell division.
Parent Tip: Review the logic above to help your child master the concept of cells and tissues worksheet answers.
