Answer:
The correct statements are:
- consist of fats, phospholipids, and steroids
- include cholesterol and saturated fats
- are the most highly concentrated source of energy.
Lipids refer to the biomolecule which is insoluble in polar solvents like water.
They are highly soluble in non-polar solvents.
They include fatty acids, sterols, waxes, fat-soluble vitamins (vitamins A, D, E, K), glycerides (mono, di, and tri), and phospholipids.
They perform various functions in a cell such as energy-storing compounds, signaling molecules, and structural component (like in cell membrane).
Oxidation of fats releases maximum energy (9Kcal per mole) as compared to carbohydrate and proteins which only release 4Kcal per mole.