3.1 biological molecules

• what are carbs used for?

  as respiratory substrates, also form structural components in plasma membranes and cell walls
• what are lipids used for?

  in the bilayer of plasma membranes, hormones, and as respiratory substances
• what are proteins used for?

  form cell structures, enzymes, chemical messengers and blood components
• What are nucleic acids used for?

  the genetic coding for the production of proteins
• most common component of cells -

  water