Which of the following criteria are used to determine if a substance is a neurotransmitter? i. the chemical must be synthesized in the neuron. ii. when the neuron is active, the chemical is released and produces a response. iii. injection of the chemical mimics the effects of neuronal stimulation. iv. mechanisms exist for the removal of the chemical.

Explanation:

All of them. Dopamine is a neurotransmitter.

1. Dopamine is synthesized in the neuron by hydroxylating L-tyrosine via Tyrosine Kinase pathway.

2. Dopamine activates neuronal brain function.

3. Injection of L-DOPA mimics the dopamine and effects the same as neuronal stimulation.

4. Dopamine is converted to Adrenaline/Noradrenaline by Kinases and further removed from Kidneys by glucronidation.

it is a good conductor

explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).