How are chloroplasts and mitochondria similar and/or different in structure and function? Do you think they had common origins? Why?

Post a 750 – 1000 word response to the questions in the assignments section. Cite and reference all sources using APA format. 

 

Energy:

  • What are the different types of energy we learned about in Chapter 10? What makes them all “energy”? Can you think of any other kinds?
  • What is an energy wavelength? How is it similar or different from a wave in the ocean?

 

Photosynthesis:

  • How are chloroplasts and mitochondria similar and/or different in structure and function? Do you think they had common origins? Why?
  • Why do they call the Calvin-Benson cycle the light-independent reaction? What is it for and how does it differ from the light-dependent reaction?

 

Cellular Respiration

  • Under what conditions do cells start making lactic acid? What is its purpose?
  • What are the differences in how ATP is made in the electron transport chain compared to glycolysis and the Krebs cycle?

 

Taking it farther:

Choose one of the following questions to answer, and cite at least one reference other than this week’s listed resources for your response

  1. Cells break down carbohydrates into glucose before they start metabolizing it. How do cells metabolize energy from proteins and fats?
  2. Why can’t the cell skip the Krebs cycle and go directly to the high-energy yielding electron transport chain step in metabolism?
  3. Would aerobic processes for cell metabolism have been possible when life began on earth? Why or why not?
  4. Does the fact that glycolysis occurs in the cytoplasm and the electron transfer chain occurs in the mitochondria make it seem more or less likely that mitochondria were once independent organisms? Why?
  5. Since humans and other animals are capable of glycolysis, why do we need to breathe oxygen?

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