The coenzyme required is pyridoxal phosphate. It is a vitamins B6 cofactor required for transamination reaction.
Fungus uses its hyphae to obtain nutrients.
I am not 100% sure but I thinking it responds when pathogens enter the body because the immune system is meant to protect your body from illness.
Answer:
The nervous system communicates with the rest of the body through the nerves that branch off of the spine.