Principle Investigator Dr

Principle investigator Dr. Kershner asks her lab members to think of a way to increase the production of dopamine in neurons. Tiru, a senior technician in the lab, suggests increasing tyrosine levels. What is a likely response of Dr. Kershner?

A) "Great idea! Tyrosine is a direct precursor to DOPA."
B) "That won't work. Tyrosine hydroxylase is a rate limiting step."
C) "I think you're confused. Tyrosine is a precursor to serotonin, not dopamine."
D) "It's worth a shot because we know that adding L-DOPA won't work."