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8.1 Energy and Life

8.1 Energy and Life. Objectives. Explain the interrelationships between the processes of photosynthesis and cellular respiration comparing and contrasting photosynthesis and cellular respiration reactions.

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8.1 Energy and Life

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  1. 8.1 Energy and Life

  2. Objectives • Explain the interrelationships between the processes of photosynthesis and cellular respiration comparing and contrasting photosynthesis and cellular respiration reactions. • Determine what factors affect the processes of photosynthesis and cellular respiration (i.e., light intensity, availability of reactants, temperature).

  3. Questions • What ultimately provides energy for living things? • What provides energy for us?

  4. Autotrophs and Heterotrophs • Plants and other types of organisms are able to use light energy from the sun to produce food. • What is the difference between autotrophs and heterotrophs? • Give an example of an autotroph. • Give an example of a heterotroph. What are those organisms called?

  5. Chemical Energy and ATP Who likes to burn Things??? (that may be a dumb question)

  6. Chemical Energy and ATP • As you write you are “burning” fuel. • Living things use chemical fuels. • Adenosine Triphosphate (ATP) – large carbon molecule with THREE PHOSPHATE GROUPS.

  7. Releasing Energy • When you remove the third phosphate from ATP a large amount of energy is released. • Enough energy for active transport, protein synthesis, and muscle contraction. (Remind me to show you a picture of a guy with too much ATP/Steroids)

  8. Storing Energy POP QUIZ – If adenosine triphosphate loses a phosphate, is it still ATP? Then what is it? (Adenosine diphosphate or ADP which still has energy…just not as much) NO

  9. Using Biochemical Energy (pg. 203) Fully Charged Battery Partially Charged Battery

  10. Closure • We have completed 8.1. • Photosynthesis & Cellular Respiration Vocabulary Worksheet. • We’ll continue with section 8.2 tomorrow. • Any questions or comments for the good of the cause?

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