THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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all work via protein kinases
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are never found in the nucleus of a cell
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may be found embedded in the plasma membrane, or found within the cytoplasm or nucleus
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all work by opening ion channels
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are only found associated with the plasma membrane
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Detailed explanation-1: -Receptors come in many types, but they can be divided into two categories: intracellular receptors, which are found inside of the cell (in the cytoplasm or nucleus), and cell surface receptors, which are found in the plasma membrane.
Detailed explanation-2: -Cell surface receptors (membrane receptors, transmembrane receptors) are receptors that are embedded in the plasma membrane of cells. They act in cell signaling by receiving (binding to) extracellular molecules.
Detailed explanation-3: -Cell plasma membranes (and a few intracellular membranes as well) contain membrane receptors. These receptors mediate signal transduction for cellular responses to extracellular stimuli.
Detailed explanation-4: -Intracellular receptors are located in the cytoplasm of the cell and are activated by hydrophobic ligand molecules that can pass through the plasma membrane.
Detailed explanation-5: -Receptors play a key role in cell signaling as they are able to detect chemical signals or physical stimuli. Receptors are generally proteins located on the cell surface or within the interior of the cell such as the cytoplasm, organelles, and nucleus.