1 / 26

Energy Flow in Living Things

12/14/09 . Energy Flow in Living Things. Catalyst. What do you eat to get energy? What type of biological molecule has the longest lasting energy? What type of biological molecule has the shortest lasting energy?. Relationships to Energy.

tyanne
Download Presentation

Energy Flow in Living Things

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 12/14/09 Energy Flow in Living Things

  2. Catalyst • What do you eat to get energy? • What type of biological molecule has the longest lasting energy? • What type of biological molecule has the shortest lasting energy?

  3. Relationships to Energy • How are some of the organic molecules that we have learned about relate to energy use? • How are some forms of transport related to energy use? • How are some of the organelles we have learned about related to energy?

  4. Organic Molecules • Lipids and Carbohydrate organic molecules function as the quick storage of energy!

  5. Transport and Energy • Active transport uses energy to pump molecules and particles from low concentration to high concentrations! • How is active transport used in the body to continue homeostasis?

  6. Active Transport and Energy • Active Transport uses energy to keep our bodies stable in the following examples” • Pumping waste out of our cells • Producing more energy in cellular respiration • How about using our energy to maintain a balance things like food, water, mates?

  7. Organelles and Energy • Chloroplasts in plants • Uses energy in the cell to make glucose! • Sun  glucose • Mitochondria in plants and animals (Euks) • Uses the glucose consumed (animals) or made (plants) to make energy in the form of ATP!

  8. Types of Energy • Heat = • Light = • Chemical = • Usable =

  9. Catalyst Answers • What do you eat to get energy? Food (carbohydrates, proteins and lipids) • What type of biological molecule has the longest lasting energy? Lipids • What type of biological molecule has the shortest lasting energy? Carbohydrates

  10. Metabolism  Unit Topic • What did we say metabolism was?

  11. Metabolism  Unit Topic Remember that we said: • Organisms need to get energy from the environment to survive. • Metabolism is how organisms get energy, use energy and dispose of waste by-products.

  12. Bioenergetic Reactions • Bio = Life • Energetics = properties of energy • Reactions = a process that results in a product from reactant substances • Reactant + reactant product(s)

  13. How do living things get and use energy?

  14. The transfer of energy • All energy on Earth comes from the sun

  15. The transfer of energy • Autotrophs store energy from the sun in matter in a process called photosynthesis. • Autotrophs are also called producers.

  16. The transfer of energy • Heterotrophsget their energy by eating autotrophs. • Heterotrophs are also called consumers.

  17. The transfer of energy • Both autotrophs and heterotrophsrelease the potential energy stored in matter by cell respiration.

  18. Photosynthesis vs. Cell Respiration Photosynthesis = Storing energy CO2 O2 Cell Respiration = Releasing energy

  19. The flow of energy The bunny eats the grass for energy Energy from the sun is captured by chloroplasts Mitochondria change the energy made by the chloroplasts into fuel for the grass to grow. Mitochondria change the energy made by the chloroplasts into fuel for the grass to grow.

  20. Chloroplasts store energy

  21. Mitochondria release energy

  22. There are 2 types of bioenergetic reactions we will explore: • Changing light energy (sunlight) into chemical energy (food energy).Sunlight → Food = __________________ • Occurs in the ____________________________ • Changing chemical energy (food energy) into usable energy (ATP).Food → ATP = ______________________Occurs in the ____________________________

  23. Poll in! • Human sperm cells must move rapidly, often against gravity, in order to reach the egg before they die. Based on this information, which organelle would be more abundant in a sperm cell than a skin cell? • chloroplasts • ribosomes • nuclei • mitochondria

  24. What is ATP? • Watch as Ms. Kuipers demonstrates the process of converting (changing) energy from food into a form that cells can use. In the space below, record what happens during her demonstration. (What important steps do you think you are observing?)

  25. Which form carried/stored the energy? ___________ • Which form accepted the energy? ___________ • How was the energy transferred? _______________________________________________________________________________________________________________ • How is energy stored (breaking or forming bonds)? ______________________ • How is energy released (breaking or forming bonds)? ____________________ATP (adenosine triphosphate) • TRI = _____ • The molecule that cells use to ______________ and _____________ energy • ADP (adenosine diphosphate) • DI = _____ • The molecule that cells use to ______________ energy • If a cell has _____________ amounts of extra energy it can store it by _____________ a phosphate group (P). Then the ATP will be stored for use for ______________.

More Related