Answer: Option II. inhibited by adenylylation.
Option III. activated by uridylylation of the PII subunit of adenylyltransferase.
Explanation:
Glutamine syntherase is an enzyme that is found in the mitochondria. Glutamine syntherase acts as a catalyst in the reaction that produces glutamine from glutamate and ammonia.
I've learned that the circulatory system is responsible for transporting nutrients and blood throughout the entire body :D
The Central Nervous system is made out of spinal cords that connect to the brain.