Answer:
33
Explanation:
because proton number is always equal to atomic number
The neurotransmitter that functions to stimulate skeletal muscle cells to contract but slows contractions of the heart is acetylcholine.
<h3>What is a neurotransmitter?</h3>
A neurotransmitter is a chemical messenger that transmits information through nerve cells or neurons, and acetylcholine functions to contract smooth muscles.
In conclusion, the neurotransmitter that functions to stimulate skeletal muscle cells to contract but slows contractions of the heart is acetylcholine.
Learn more about neurotransmitters here:
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Answer:DNA is the hereditary molecule that determines hair color in humans, However, the DNA molecule itself is colorless
Explanation: