living organisms need to respire

HideShow resource information
  • Created by: star@
  • Created on: 03-11-12 17:53
View mindmap
  • Metabolic reactions
    • Anabolic
      • when smaller molecules join to form a larger molecule
    • Catabolic
      • when a large molecule is broken down to smaller ones
      • some energy from this reaction is released as heat
    • controlled by enzymes
      • organisms should maintain the right temp for the enzymes to work properly
  • Anabolic
    • when smaller molecules join to form a larger molecule
  • Catabolic
    • when a large molecule is broken down to smaller ones
    • some energy from this reaction is released as heat
  • living organisms need to respire why?
    • Metabolic reactions
      • controlled by enzymes
        • organisms should maintain the right temp for the enzymes to work properly
    • energy= is the ability to do work
      • potential energy is stored energy found in complex organic molecules
      • kinetic energy is the movement energy when molecules can diffuse down their concentration gradients
      • energy comes from photoautotrophs
    • Respiration: the process where energy that is stored in complex organic molecules is broken down to prduce ATP
      • ATP is  a phosphorylated nucleotide it is made up of adenine + ribose sugar + 3 phosphates, is the universal energy currency
        • role is to provide energy to all metabolic reactions, can be hydrolysed to ADP + Pi (inorganic phosphate) releasing 30.6 kJ energy per mol
          • processes needing energy are: active transport of molecules and ions into and out of cell membranes, secretion, endocytosis

Comments

star@

good

Similar Biology resources:

See all Biology resources »See all Cellular processes and structure resources »