Biology › Section K · Viruses and prokaryotes › Topic K.5
Structure of prokaryotes
A prokaryote is a complete organism in a single tiny cell: a loop of DNA, a tough wall, and a few clever appendages - plus three ways to trade genes that eukaryotes never use.
In this topic
- The stripped-down cell
- The wall and the water problem
- The Gram split
- Archaea: same plan, different chemistry
- Capsules, flagella, and pili
- Plasmids: extra circles of DNA
- Binary fission: cloning at speed
- Three ways to trade genes
- Worked example: which domain is it?
- Worked example: a pathogen made, not born
- Common mistakes to avoid
- Key takeaways
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