Which of the followings is a lipid soluble :hormone Estrogen .a .Oxytocin .b .Insulin .c Epinephrine .d

The correct answer is a) Estrogen.<br /><br />Estrogen is a lipid-soluble hormone, which means it can easily pass through cell membranes. This property allows estrogen to bind to receptors inside cells and exert its effects. Lipid-soluble hormones, such as estrogen, are typically steroid hormones. They are synthesized from cholesterol and can easily diffuse through the lipid bilayer of cell membranes.<br /><br />Oxytocin (b) is a peptide hormone, which means it is not lipid-soluble. Peptide hormones are generally water-soluble and cannot easily pass through cell membranes. Instead, they bind to receptors on the surface of cells and initiate signaling pathways.<br /><br />Insulin (c) a peptide hormone and is not lipid-soluble. It binds to receptors on the surface of cells and triggers a cascade of intracellular events to regulate glucose metabolism.<br /><br />Epinephrine (d) is an amine hormone, which is also not lipid-soluble. It binds to receptors on the surface of cells and initiates various physiological responses, such as increasing heart rate and blood pressure.<br /><br />In summary, among the given options, estrogen is the only lipid-soluble hormone.