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Cell Communication Discussion Question1

Communication Discussion

Q 1.1. Do you think a ligand can be both a paracrine and autocrine signal ? Explain your reasoning . 2. Explain what differentiates a hormone from other types of cell communication 3. What would happen to a cell communication pathway if the receptor was mutated and could not bind with the ligand. 4. What is the purpose of the second messenger ?

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1. I do not think a ligand can be both paracrine and autocrine signal . Paracrine signals are those signals in which a cell produces signal to induce changes in which cells communicate over relatively short distances . It is a form of local signaling. In an autocrine signal , a cell signals itself releasing a ligand that binds to the receptor on its own surfaces .