ANIMAL PHYSIOLOGY
CHEMICAL SIGNALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Vitamin A is a relatively small, lipid-soluble molecule that can behave as a hormone. Most likely its receptor
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is an ion channel receptor.
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is a protein kinase receptor.
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involves a G protein.
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is not connected to the cell membrane.
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Explanation:
Detailed explanation-1: -Answer and Explanation: Vitamin A is a relatively small, lipid-soluble molecule that can behave as a hormone. Its receptor, therefore, is most likely (d) located inside the cell. Lipid-soluble hormones bind to nuclear or cytoplasmic receptors that cause transcription of genes to create new intracellular enzymes.
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