Review Questions
Which of the following elements is not a micronutrient?
- boron
- calcium
- chromium
- manganese
Hint:
B
Prokaryotes that obtain their energy from chemical compounds are called _____.
- phototrophs
- auxotrophs
- chemotrophs
- lithotrophs
Hint:
C
Ammonification is the process by which _____.
- ammonia is released during the decomposition of nitrogen-containing organic compounds
- ammonium is converted to nitrite and nitrate in soils
- nitrate from soil is transformed to gaseous nitrogen compounds such as NO, N2O, and N2
- gaseous nitrogen is fixed to yield ammonia
Hint:
A
Plants use carbon dioxide from the air and are therefore called _____.
- consumers
- producers
- decomposer
- carbon fixers
Hint:
B
Cyanobacteria harness energy from the sun through photosynthesis, and oxidize water to provide electrons for energy generation. Thus, we classify cyanobacteria as _________.
- photolithotrophs
- photoautotrophs
- chemolithoautotrophs
- chemo-organotrophs
Hint:
A