General Biology I

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Chloroplast

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General Biology I

Definition

Chloroplasts are organelles found in plant cells and algae responsible for photosynthesis. They convert light energy into chemical energy stored in glucose molecules.

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5 Must Know Facts For Your Next Test

  1. Chloroplasts contain the pigment chlorophyll, which absorbs light energy.
  2. The thylakoid membrane within chloroplasts is where the light-dependent reactions occur.
  3. Chloroplasts have their own DNA, indicating a symbiotic origin.
  4. The stroma is the fluid-filled space where the Calvin cycle (light-independent reactions) takes place.
  5. ATP and NADPH produced in the chloroplasts are essential for synthesizing glucose.

Review Questions

  • What pigment do chloroplasts contain that is crucial for absorbing light?
  • Where within the chloroplast do light-dependent reactions take place?
  • What is the significance of chloroplasts having their own DNA?
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