Question

fall final exam (2025 - m)
possible points: 4.11
match the description to the term on the right side.
is converted (changed) by nitrobacter
is converted (changed) by nitrosomonas
is removed via monthly water changes
ammonia nitrite nitrate

Explanation:

1. In the nitrogen cycle, Nitrobacter bacteria convert nitrite ($NO_2^-$) into nitrate ($NO_3^-$). So the description "Is converted (changed) by Nitrobacter" matches with "nitrite".
2. Nitrosomonas bacteria convert ammonia ($NH_3$ or $NH_4^+$) into nitrite ($NO_2^-$). So the description "Is converted (changed) by Nitrosomonas" matches with "ammonia".
3. Nitrate is a relatively stable form in the aquarium or aquatic system context and is often removed via water changes. So the description "Is removed via monthly water changes" matches with "nitrate".

Answer:

• "Is converted (changed) by Nitrobacter" : nitrite
• "Is converted (changed) by Nitrosomonas" : ammonia
• "Is removed via monthly water changes" : nitrate