Nitrifying bacteria

Question 1

electron donor?

Answer 1

NH3 or NO2-

Question 2

so is the whole process done by one bacteria?

Answer 2

no the process divide in two, complete oxidation is carried out by two groups

Question 3

in what conditions does it only occurs?

Answer 3

only in Nitrification

Question 4

who does the first part (NH3 to NO2-)

Answer 4

Nitrosomonas spp.

Question 5

N.S who is the electron acceptor?

Answer 5

O2

Question 6

Who oxidizes ammonia?

Answer 6

AMO, ammonia monooxygenase

Question 7

What does AMO needs to oxidized it?

Answer 7

needs 2 é

Question 8

those two é are supplied by?

Answer 8

the quinone

Question 9

for every 4 é generated from oxidation of NH3, why only two reach Cyt aa3, the proton pump?

Answer 9

because they are used for reversed electron flow

Question 10

NADH is produced ?

Answer 10

by reverse electron flow

Question 11

Amo transform what to what?

Answer 11

transform NH3 to NH2OH

Question 12

then who transforms NH2OH to NO2-

Answer 12

hydroxylamine oxidoreductase

Question 13

what is the energy source in that6

Answer 13

pmf

Question 14

it has a?

Answer 14

low yield

Question 15

In the second path who is the final electron acceptor?

Answer 15

O2

Question 16

why is the second path quicker?

Answer 16

NO2- NO3- couple has a higher potential

Question 17

who oxidizes it ?

Answer 17

nitrite oxidoreductase

Question 18

how is produced NADH in the second path?

Answer 18

reverse electron flow

Question 19

what is the energy source in the secon path?

Answer 19

pmf