Mineral Nutrition In Plants Question 201
Question: The following reaction points out the process of $ \alpha $ -ketoglutaric acid $ +NH_4{^{+}_{{}}}NADPH $ $ \xrightarrow[dehydrogenase]{Glutamate}Glutamate+H_2O+NADP $
Options:
A) Nitrification
B) Transamination
C) Amination
D) Reductive amination
Show Answer
Answer:
Correct Answer: D
Solution:
[d] The organic acid $ \alpha $ - ketoglutaric acid plays an important role in the synthesis of amino acid.
The ammonia formed by nitrogen assimilation (i.e., reduction of nitrates), reacts with a-ketoglutaric acid to form an amino acid, i.e., glutamic acid.
In this process, a-ketoglutaric acid comes from Krebs cycle and hydrogen is donated by the coenzyme NADH or NADPH.
The reaction takes place in the presence of enzyme glutamic dehydrogenase.
BETA
