Energy systems
Download
1 / 11

Energy Systems - PowerPoint PPT Presentation


  • 101 Views
  • Uploaded on
  • Presentation posted in: General

Energy Systems. Goal:. I will be able to explain how my body converts food into a usable form of energy for my cells. . Generating Energy. How does the human body generate energy? Carbohydrates Proteins Fats. Carbohydrates. Among the most common organic compounds on earth.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Energy Systems

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Energy Systems


Goal:

  • I will be able to explain how my body converts food into a usable form of energy for my cells.


Generating Energy

  • How does the human body generate energy?

  • Carbohydrates

  • Proteins

  • Fats


Carbohydrates

  • Among the most common organic compounds on earth.

  • Digestion breaks down carbohydrates into glucose.

  • Glucose is stored in the liver and skeletal muscles in the form of glycogen.

Glucose


Adenosine triphosphate (ATP)

  • Metabolic pathways convert the chemical potential energy in foods we eat into ATP.

  • ATP fuelscellular processes in our bodies.

  • ADP + P + Energy → ATP

  • ATP video


Metabolic Pathways Pathway 1: ATP-PC System

  • Anaerobic process that occurs in the cytoplasm of cells.

  • First of the two anaerobic energy pathways.

  • Makes enough ATP to sustain intense activity for about 15 seconds.

  • System involves breaking a phosphate group off of phosphocreatine (PC) molecule and adding it to ADP creating ATP.

  • PC + ADP → ATP + creatine

    (Speed Skating Video – Men Team Pursuit)


Pathway 2: Glycolysis

  • Allows athletes to participate in a high level of performance for an additional 1-3 minutes.

  • Anaerobic process that occurs in the cytoplasm.

  • Products of this reaction include ATP and a molecule called pyruvate.

  • Pyruvatethen moves on to the next pathway which is aerobic.


  • Pathway Overview Video


Lactic Acid

  • In the absence of sufficient oxygen, pyruvate is converted into lactic acid.

  • Lactic acid builds up in the muscle fibres and causes pain and reduces movement.


Work:

Read Chapter 5 (pgs 81 – 84)

1. List the three key energy nutrients.

2. What is the role of carbohydrates as an energy source?

3. Why is ATP essential for life?

4. Compare anaerobic and aerobic systems.

5. List the type of activities that would use the ATP-PC system and Glycolysis.

CHECK H/W


ad
  • Login