MOLECULES FOUND IN LIVING CELLS

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MOLECULES FOUND IN LIVING CELLS

• A. INORGANIC MOLECULES - molecules that do not
  contain carbon.
• 1) Water
• a) Structure
• b) Functions
• 2) Electrolytes

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• B) ORGANIC MOLECULES - molecules that contain
  carbon. These are complex molecules because of
  the branching that occurs with carbon.

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• 1) Proteins
• a) Functions
• b) Structure - composed of amino acids
  linked by peptide bonds. There are 4
  degrees of structure.

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• 2) Lipids - also called fats. They include
• a) triglycerides - the neutral fats that are
  used for energy storage, insulation and
  protection.
• b) phospholipids - they have a phosphate
  attached and are important components of
  cell membranes.

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• c) steroids - are important components of
  cell membranes and some hormones. Examples
  include cholesterol, testosterone and the
  estrogens.
• d) prostaglandins - modified fatty acids that
  act like hormones.

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• 3) Carbohydrates - Cn(H2O)n, carbon and H2O.
  a) Primarily used as an energy source. They
  can form polymers . They include mono, di
  and polysaccharides.

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• 4) Nucleic acids - DNA and RNA.
• a) These molecules have our genetic
  information.
• 5) High energy phosphates. The most common one
  is ATP - adenosine triphosphate.
• a) This is the energy currency for our cells.

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Secondary Structure
ß Pleated Sheet
Alpha Helix
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