Question

Which cell organelle synthesizes acetylcholine?
A. Golgi complex
B. Ribosome
C. Mitochondria
D. Lysosome

Answer 1

Hint: The Acetylcholine are certain chemicals that have certain functions in the brain and are secreted by the parasympathetic cholinergic neurons. The acetylcholine communicates between the two neurons and between the neuron and muscle, it also causes the muscles to contract and it inhibits the activation of the cholinergic system.

Complete answer: The acetylcholine is an organic matter which has a function in the brain as a neurotransmitter where a chemical message is released by the nerve cell which sends the signal to other cells. This chemical activates the muscles and also works as an autonomic nervous system. The acetylcholine is formed when the reaction between acetate, coenzyme A, and the ATP with the acetyl CoA takes place in the mitochondria and then is further released into the cytoplasm. The choline then enters into the axoplasm by the active transport and through the axonal membrane. The choline acetylase is present at the axonal terminal and it helps in the acetylation of choline with the CoA and thus the acetylcholine is formed. Acetylcholine is stored inside the vesicles in a nerve cell. During a nerve impulse, these vesicles present in the axon terminal end fuses with the membrane and releases its contents into the synaptic cleft. These neurotransmitters go and bind to the corresponding neuron thus, eliciting action potentials.
Hence, the correct answer is option C.

Note: The acetylcholine synthesizes the acetate which is produced by the acetyl- CoA, this acetyl CoA is synthesized in the mitochondria which are the by-product of the pyruvate dehydrogenase complex and is further used in the respiration through the Krebs’s cycle. They inhibit the activation of the cholinergic system which is in the central nervous system.