Biological Molecules

  • Chemical Bonds
  • Carbohydrates
  • Lipids
  • Proteins
  • Biochemical Tests
  • Enzymes
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Chemical Bonds

Chemical Bonds

Covalent Bonds:

  • Strong
  • Can't be broken or made at temperatures in living organisms
  • ALWAYS made or broken by the action of enzymes.
  • Represented by strong lines in chemical structures.

Hydrogen Bonds:

  • Muchweaker
  • Formed between two atoms
  • Usually hydrogen...
  • Slight positive charge...
  • And another atom...
  • Usually oxygen or nitrogen...
  • Slight negative charge.
  • Easily made and broken inside cells
  • Represented by dotted lines in chemical structures.
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  • Only contain CARBON, HYDROGEN and OXYGEN.
  • INCLUDES monomers, dimers and polymers.
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Formula = CH2On

n can equal 3 - 7

Most common is glucose.

  • in animals is the main transport of sugar in the blood.
  • concentration is carefully controlled
  • many isomers of glucose - galactose and fructose.
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