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Chloroplasts and Mitochondria Two special cell organelles.

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Presentation on theme: "Chloroplasts and Mitochondria Two special cell organelles."— Presentation transcript:

1 Chloroplasts and Mitochondria Two special cell organelles

2 Similarities Membrane-bound organelles Contain their own DNA

3 Endosymbiont Theory 1.Ancestral prokaryote 2.Infolding of the membrane forms membrane enclosing nucleus 3.Also becomes endoplasmic reticulum 12 and 3

4 Endosymbiont Theory 4.Ancestral prokaryote becomes a host cell by engulfing another prokaryote—one that consumes others for food (heterotrophic) & that respires (uses oxygen) 5.Some of these ancestral prokaryote also engulf a photosynthetic prokaryote 6.Eventually these engulfed prokaryotes live inside the cell (symbiosis) in a way that is beneficial to the host 4 56

5 Differences Chloroplasts – Only found in plant cells – Contain chlorophyll – Location of photosynthesis Mitochondria – Found in both plant and animal cells – Location of respiration

6 Photosynthesis…

7 …& Respiration What is the relationship between these 2 equations? (Hint: look closely at their reactants and products)

8 Chloroplasts Capture light energy and convert it to chemical energy through photosynthesis Chlorophyll is a green pigment in thylakoids that traps light. Green is not the only pigment that plants contain What are some other colors visible in plant leaves?

9 Mitochondria Convert fuel particles (mainly sugars) into usable energy. Highly folded inner membrane Sugars are broken down on the membrane surface? Therefore, what is the benefit to having a highly folded inner membrane?

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