Biology

The document discusses the structure and functions of cells. It defines cells as the basic structural and functional units of living organisms. Cells can be unicellular, like bacteria and amoebas, or multicellular, like plants and animals. The key parts of a cell are the cell membrane, cytoplasm, and nucleus. The cell membrane encloses the cell, the cytoplasm is a jelly-like...

The document discusses the structure and functions of cells. It defines cells as the basic structural and functional units of living organisms. Cells can be unicellular, like bacteria and amoebas, or multicellular, like plants and animals. The key parts of a cell are the cell membrane, cytoplasm, and nucleus. The cell membrane encloses the cell, the cytoplasm is a jelly-like substance that contains organelles, and the nucleus houses genetic material in the form of DNA and chromosomes. Plant cells have an additional cell wall layer that provides shape and protection.