s

• Lipid


  A wide variety of biomolecules including fats, oils, waxes and steroid hormones
• Lipids


  • They do not dissolve in water; they are hydrophobic
• The hydrophobic nature of the lipids dictates many of their uses in biological systems
• Lipids are composed primarily of carbon, hydrogen, oxygen, phosphorus and sulfur (lipids also contain nitrogen in some cases)
• Fats


  A good source of stored energy
• Oils and waxes


  Used to form protective layers on our skin, preventing infection
• Steroid hormones


  Important regulators of cell activity
• The activities of steroid hormones such as estrogen


  Have been implicated in cancers of the female reproductive system