Viral infections are common in babies and children and often cause a minor rash of the skin. These rashes are usually harmless and will go away on their own. Different viruses can cause different rashes, and sometimes different viruses can cause rashes that look the same.
receptors for both lipid-soluble and lipid-insoluble hormones are found within the cell and usually within the nucleus. receptors for lipid-soluble hormones are on or in the cell membrane, whereas receptors for lipid-insoluble hormones are inside the cell.
Lipid-soluble signaling molecules, such as testosterone, cross the membranes of all cells but affect only target cells because: A) Only target cells retain the appropriate DNA segments. B) Intracellular receptors are present only in target cells. C) Most cells lack the Y chromosome required.) They no longer have active nuclei. B) They no longer carry receptors for signal molecules. C) They have been shunted into G0. D) They can no longer bind CDK to cyclin.