Which genus of bacteria is responsible for the oxidation of ammonium ions (NH4+\text{NH}_4^+NH4+) into nitrite ions (NO2−\text{NO}_2^-NO2−) during the nitrogen cycle?
A
Nitrobacter
B
Rhizobium
C
Nitrosomonas
D
Azotobacter
Markscheme
Ecosystems Questions
37 exam-style questions on OCR A A Level Biology Ecosystems. Each one has a worked solution and a mark scheme showing where the marks go.