Which of the following molecules are present in a cell membrane?Select all that apply.Group of answer choiceshydrocarbonslipids (fats)carbohydratesprotein

The molecules that are present in a cell membrane include:

1. Lipids (fats): The most abundant lipids in most membranes are phospholipids. These are important for the structure and function of the cell membrane.

2. Carbohydrates: These are present on the exterior surface of the cell membrane. They are bound either to proteins (forming glycoproteins) or to lipids (forming glycolipids).

3. Proteins: These are embedded within the cell membrane and serve various functions such as transport of molecules, signal transduction, and cell adhesion.

Hydrocarbons are not typically found in cell membranes. They are nonpolar molecules and do not mix well with water, which makes them unsuitable for the aqueous environment of the cell.