Chapter 3C: Matter, Energy, and Life Flashcards
1
Q
Ammonification
A
Conversion of organic-N to ammonium (NH4+); can be aerobic or anaerobic
2
Q
Nitrification
A
Oxidation; must have aerobic conditions; pH>5; temp >4 C; Not retained by soil and moves with water.
3
Q
Denitrification
A
Reduction; Must be anaerobic; Need organic C source
4
Q
Phosphorus Cycle
A
Phosphorus is needed to make DNA, ATP, and other important biomolecules.
5
Q
Sulfur Cycle
A
Most similar to carbon cycle
6
Q
Anaerobic Conditions (Sulfur cycle)
A
Bacteria convert sulfates to hydrogen sulfide gas which is released to the atmosphere or to metallic sulfides whihc are deposited as rock
7
Q
Aerobic Conditions
Sulfur cycle
A
Bacteria oxidize sulfur compounds to sulfates
8
Q
Material Cycles
A
Hydrologic Carbon Nitrogen Phosphorus Sulfur
