[Answer] What are the three categories of chemical messengers?

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What are the three categories of chemical messengers? MESSENGER was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015 studying Mercury's chemical composition geology and magnetic field. The name is a backronym for "Mercury Surface Space Environment Geochemistry and Ranging" and a reference to the messenger god Mercury from Roman mythology.. MESSENGER was … Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers . (Intracellular signals a non-local form or cell signaling encompassing both first messengers and second messengers are classified as juxtacrine paracrine and endocrine depending on the range of the signal.) Neurotransmission (Latin: transmissio "passage crossing" from transmittere "send let through") is the process by which signaling molecules called neurotransmitters are released by the axon terminal of a neuron (the presynaptic neuron) and bind to and react with the receptors on the dendrites of another neuron (the postsynaptic neuron) a short distance away. Biosynthesis is a multi-step enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis simple compounds are modified converted into other compounds or joined to form macromolecules.This process often consists of metabolic pathways.Some of these biosynthetic pathways are located within a single cellular … Biochemistry or biological chemistry is the study of chemical processes within and relating to living organisms. A sub-discipline of both chemistry and biology biochemistry may be divided into three fields: structural biology enzymology and metabolism.Over the last decades of the 20th century biochemistry has become successful at explaining living processes thro...

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