Elements required for living processes

• what 4 key elements make up biological molecules + are essential for al living processes

  • hydrogen
  • oxygen
  • carbon
  • nitrogen
• define micronutrients

  inorganic nutrients needed in minute (trace) amounts
• define compound

  • consists of more than ONE TYPE OF ATOM
  • 2 or more elements joined together
• define inorganic

  compounds that DON'T contain carbon bonded to hydrogen
• give examples of of inorganic compounds

  • CO2
  • Water
• define macronutrients

  inorganic ions needed in small amounts
• define atom

  contains electrons + protons + neutrons
• define element

  only contains one type of atom
• define molecule

  • 2 or more atoms joined together
  • can be same or different atoms
• define organic

  compounds that are based on carbon + contain carbon bonded to hydrogen
• give examples of organic compounds

  • carbohydrates
  • proteins
  • lipids