Lecture 3C Flashcards
1
Q
Process of Nitrate reduction
A
Nitrate -> Nitrite
2
Q
Process of Denitrification
A
Nitrate -> Nitrite -> Nitric oxide -> Nitrious Oxide -> Dinitrogen
3
Q
Many denitrifying Bacteria are phylogenetically ______ and physiologically _______.
A
Proteobacteria
Facultative anaerobes
4
Q
a eukaryotes that can process denitrification
A
Globobulimina pseudospinescens
5
Q
a Strong greenhouse gas
A
N2O
6
Q
Reacts with and consumes onzone (O3) in the atmosphere
A
NO
7
Q
What is formed when NO is reaction with the Ozne
A
NO2
8
Q
- The enzyme that catalyzes the first step of dissimilative nitrate reduction
- a molybdenum containing, membrane integrated enzyme whose synthesis is repressed by O2
A
Nitrate reductase
9
Q
Example of microorganisms that is denitrifiers
A
- Pseudomonas denitrificans
- P. stutzeri
10
Q
Enzymes in complete denitrifiers?
A
- Nitrate reductase
- Nitric oxide reductase
- Nitrous oxide reductase
11
Q
most oxidized form of sulfur
A
Sulfate (SO4-)
12
Q
end product of sulfate and suflur reduction
A
Hydrogen sulfide
13
Q
Two forms that active sulfate can be made
A
- APS (adenosine 5’phosphosulfate
- PAPS (phosphoadenosine 5’-phosphosulfate
14
Q
A
