Answer: Acetylcholine
Explanation: At synapses within the sympathetic gangalia, preganglionic
Neurons release Acetylcholine which is a chemical messaganer that binds and activate nicotinic Acetylcholine receptor on post ganglionic neurons . When there is prolonged activation it can draw out the release of andernaline from the andrenal medulla.
To eliminate the possibility of hidden or unknown variables, the scientist must run an A) Control experiment
Answer:
Hydrogen Bonds
Explanation:
The nitrogen bases are held together in the center of the molecule by Hydrogen Bonds. The type of sugar found in DNA is Deoxyribose.