Bacteria are the oldest and most diverse group of living organisms. All of its representatives have a unicellular structure. The cell of these creatures has features. For example, it contains a cell wall that supports and shapes the body. The cytoplasm is motionless and dense, which distinguishes it from that of representatives of other kingdoms. A bacterial cell contains a nuclear substance that has no shape. Therefore, bacteria are classified as prokaryotes. Most bacteria are capable of locomotion, so their body has one or more flagella. They feed and breathe by diffusion, and multiply by simple division.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.