LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Acetylcholine is an important chemical signal in the nervous system. It is broken down into other chemicals by cholinesterase.Cholinesterase is which of the following?
A
enzyme
B
hormone
C
lipid
D
organelle
Explanation: 

Detailed explanation-1: -Acetylcholinesterase (AChE) is a cholinergic enzyme primarily found at postsynaptic neuromuscular junctions, especially in muscles and nerves. It immediately breaks down or hydrolyzes acetylcholine (ACh), a naturally occurring neurotransmitter, into acetic acid and choline.

Detailed explanation-2: -Cholinesterase is a family of enzymes that catalyzes the hydrolysis of the neurotransmitter acetylcholine (ACh) into choline and acetic acid, a reaction necessary to allow a cholinergic neuron to return to its resting state after activation.

Detailed explanation-3: -Cholinesterase is a plasma enzyme, produced by the liver, which is capable of hydrolysing a variety of choline esters.

Detailed explanation-4: -Free acetylcholine within the synaptic cleft is degraded by an enzyme called acetylcholinesterase. This enzyme assures that no excess of acetylcholine remains in the synaptic cleft to cause the continuous activation of receptors. Acetylcholine has different roles and functions at different synapses throughout the body.

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