This diagram covers Bacterial Cell Structure within Cell Structure for GCSE Biology. Cell theory, prokaryotic and eukaryotic cells, animal and plant cell organelles, bacterial cells, specialized cells, and microscopy It is section 4 of 17 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
🦠 Bacterial Cell Structure
Bacterial cells are prokaryotic and have some unique features:
🧬 Genetic Material
- Single circular chromosome (nucleoid)
- No nuclear membrane
- DNA freely suspended in cytoplasm
⭕ Plasmids
- Small rings of DNA
- Carry additional genes
- Can be passed between bacteria
- Often carry antibiotic resistance genes
🏃 Flagella
- Long, whip-like structures
- Used for movement/locomotion
- Can rotate like propellers
- Help bacteria move toward food or away from toxins
Practice questions for Cell Structure
Which part of the cell contains DNA and controls the cell's activities?
Describe the structure and function of chloroplasts.
Quick recall flashcards
What is the function of the nucleus?
The nucleus is the control center of the cell. It contains DNA which controls all cellular activities and heredity.
What is the function of ribosomes?
Ribosomes are the sites of protein synthesis. They translate mRNA into proteins by linking amino acids together.