Concept explainers
(a)
To determine: The correct sequence of given molecules: cell response, receptor, second messenger, and a ligand for a signal transduction pathway.
Introduction: A cell can respond to a particular chemical signal only if a cell has an appropriate receptor protein. The receptor protein combines with the signal protein. The binding of a receptor and signal molecule initiates a response.
(b)
To determine: The correct sequence of given molecules: amplifier enzyme, cell response, phosphorylated protein, protein kinase, and second messenger for a signal transduction pathway.
Introduction: The signal transduction pathway is the basic pattern followed by the signal molecule to create a response. The pathway includes the extracellular and intracellular events.
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EBK HUMAN PHYSIOLOGY
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