Living cells

Living cells are the basic building blocks of all living organisms, from tiny bacteria to large plants and animals. They are structured units that carry out essential functions such as growth, energy production, and reproduction. Cells contain various components, including a membrane that protects them, genetic material (DNA) that carries instructions for life, and organelles that perform specific tasks. Cells can be unicellular, existing alone like bacteria, or multicellular, forming complex organisms like humans. Their intricate systems work together to sustain life, adapt to environments, and respond to changes, making them fundamental to biology.