Examlex
Which pair of nations had not practiced conscription prior to World War I?
Phospholipase
An enzyme that hydrolyzes phospholipids into fatty acids and other lipophilic substances, playing key roles in cellular membranes' metabolism and signaling.
First Messenger
A signaling molecule that binds to a receptor at the surface of a cell, initiating a series of intracellular events that lead to a biological response.
Acetylcholine
A neurotransmitter in both the peripheral and central nervous system that is involved in muscle activation, heart rate, and memory function.
Cyclic AMP
Cyclic AMP (cAMP) is a second messenger important in many biological processes, serving as a signaling molecule that transduces extracellular signals into cellular responses.
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