4.2 Movement of Energy Flashcards
1
Q
Define nitrogen fixation.
A
N2 from air is reduced to NH3 (or NH4+)
2
Q
Define nitrification.
A
reduced nitrogen compounds are sequentially oxidized to nitrite and nitrate
3
Q
Define denitrification.
A
the loss or removal of nitrogen or nitrogen compounds
4
Q
What is the equation for photosynthesis?
A
6CO2 + 6H2O + sunlight → C6H12O6 + 6O2
5
Q
What is the equation for cellular respiration?
A
C6H12O6 + 6O2 –> 6CO2 + 6H2O + Chemical Energy
6
Q
What type of organisms perform the processes of photosynthesis and cellular respiration?
A
plant cells, bacteria, and algae
7
Q
How do humans affect the carbon and nitrogen cycles?
A
The global carbon cycle is being modified principally by the burning of fossil fuels, and also by deforestation
8
Q
A
