Which citric acid cycle intermediate is an important reactant for ammonia incorp

Question

Which citric acid cycle intermediate is an important reactant for ammonia incorporation?

What enzymes do Heterofermentative lactic acid bacteria lack for conversion of glucose to two molecules of glyceraldehyde 3-phosphate (G3P) ?

What's a terminal electron acceptor in denitrification ?

What is the electron acceptor in the process of anammox?

[4 points] Which of the following is a non-protein compound that is commonly found in an organism’s electron transport chain:

a- cytochromes

b- ferredoxin

c- NADH dehydrogenase

d- quinones

Explanation / Answer

1. Glutamate is a citric acid cycle intermediate, which is an important reactant for ammonia incorporation (glutamate can giveup amine group by transamination reaction).

2. Fructose 1,6-diphosphate aldolase is absent in Heterofermentative lactic acid bacteria, so it cannot form glyceraldehyde 3-phosphate (G3P).

3. Nitrate is the terminal electron acceptor in denitrification.

4. Nitrite is the electron acceptor in the process of anammox.

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