Metabolic functions
Upcoming SlideShare
Loading in...5

Like this? Share it with your network

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads


Total Views
On Slideshare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Metabolic Functions By: Erin McLoon Rachel Corning Fianna Walsh Julia Davis
  • 2. General Overview of Metabolic Functions & ATP
    • ATP- adenosine triphosphate
      • Function: provide a form of chemical energy cells can use
      • Molecules are made and broken down
      • Helps cells maintain boundaries
      • Moves along all life processes
  • 3. General Overview Cont..
    • Structure: Modified nucleotide
      • Adenine base
      • Ribose sugar
      • Three phosphate groups
      • Phosphate groups attached by high energy phosphate bonds
    • When high energy phosphate bonds are broken by hydrolysis, energy is released and can be used by the cell to do work/power an activity
  • 4. ATP
    • What does the cell use ATP to do?
      • Synthesize proteins
      • Transport substances across its membrane
      • Causes the muscle cells to contract
    • When the high energy phosphate bond is broken:
    • ATP  ADP + P +E
        • ADP = adenosine diphosphate, P= inorganic phosphate E= energy
    • ATP supplies are replenished by oxidation of food fuels
  • 5. Anaerobic Respiration
    • Breakdown of Glucose Without Oxygen
    • Anaerobic Glycolysis:
      • Occurs in a cystol (doesn’t use Oxygen)
      • Glucose is broken down into Pyruvic acid
      • Due to lack of Oxygen, the Pyruvic acid is converted into lactic acid
    • Can provide most of ATP needed for 30-40 seconds of strenuous muscle activity
  • 6. Shortcomings of Anaerobic Respiration
    • Uses a lot of glucose for a small amount of ATP
    • Accumulating lactic acid promotes muscle soreness
  • 7. Anaerobic Respiration Diagram
  • 8. Anaerobic VS Aerobic
    • Anaerobic respiration produces only 5% of the ATP that Aerobic Respiration produces
    • Anaerobic is 2 ½ times faster than Aerobic Respiration
  • 9. Aerobic Respiration
    • Occurs in mitochondria & involves a series of metabolic pathways that use oxyen
    • Glucose is broken down completely into CO2 and H2O
      • Some of the energy is released as the bonds are broken and is captured in the bonds of ATP molecules
    • Provides 32 ATP per 1 Glucose molecule
  • 10. Aerobic Respiration
    • Slow, and requires continuous delivery of O2 and nutrient fuels to the muscles
  • 11. Krebs Cycle
    • Occurs in mitochondria
    • Produces virtually all CO2 during cell respiration
    • Yields a small amount of ATP by transferring high energy phosphate groups directly from phosphorylated substances to ADP
        • Free oxygen is not involved
        • Process called substrate-level phosphorylation
        • Phosphorylate = to add phosphate to an organic compound
        • ADP = A nucleotide, composed of adenosine and two linked phosphate groups, that is converted to ATP for the storage of energy.
  • 12. Electron Transport Chain
    • Where the production of ATP occurs
    • Hydrogen atoms removed during the first two metabolic phases are loaded with energy
    • Hydrogens are delivered by the coenzymes to the protein carriers of the ETC
      • Form part of mitochondrial cristae membranes
    • H atoms split into H ions (H+) and electrons
  • 13. Electron Transport Chain cont.
    • Electrons “fall down energy hill” (go from each carrier to carrier of lower energy)
    • Give off their load of energy in small amounts, in a series of steps to enable cells to attach phosphate to ADP to make ATP
    • Free oxygen is reduced
    • H ions and electrons unite with molecular oxygen
    • Form H2O and large amounts of ATP