Biology › Section K · Viruses and prokaryotes › Topic K.6
Prokaryotic metabolism
Prokaryotes survive almost anywhere because they can draw energy and carbon from a wider range of sources than any other organisms — and because they keep the planet's carbon and nitrogen turning over.
In this topic
- One cell, many menus
- Macronutrients: the CHONPS set
- Energy: phototrophs and chemotrophs
- Carbon: autotrophs and heterotrophs
- Worked example: naming three species
- Prokaryotes and the carbon cycle
- The methane branch
- Nitrogen fixation and ammonification
- Nitrification and denitrification
- Worked example: following one nitrogen atom
- Common mistakes to avoid
- Key takeaways
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