Question

what are steroids? how do they differ from fats? describe two functions they have in cells.

Explanation:

Steroids are lipid - based molecules with a four - ring structure. They differ from fats (triglycerides) in structure; fats have a glycerol and fatty acid structure. In cells, steroids like cholesterol are part of cell membranes (maintain fluidity). Some steroids (e.g., steroid hormones like estrogen/testosterone) act as signaling molecules.

Answer:

Steroids are lipid - based molecules with a four - ring structure. They differ from fats (triglycerides) in structure (fats: glycerol + fatty acids). In cells, they can be part of cell membranes (maintain fluidity) and act as signaling molecules (e.g., steroid hormones).