Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Life Sciences Cellular Organization
The common precursor of neurotransmitters dopamine, epinephrine and norepinephrine is
1
Glutamic acid
2
Threonine
3
Tyrosine
4
More than one of the above
5
None of the above