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.
Since a lipid molecule contains regions that are both polar and nonpolar, they are called amphipathic molecules. Figure %: Basic Lipid Structure. The most abundant class of lipid molecule found in cell membranes is the phospholipid.The phospholipid molecule's polar head group contains a phosphate group.ince a lipid molecule contains regions that are both polar and nonpolar, they are called amphipathic molecules. Figure %: Basic Lipid Structure. The most abundant class of lipid molecule found in cell membranes is the phospholipid.