Practice: Photosynthesis Visual Summary Label the two parts of the chloroplast. Label where each step of photosynthesis occurs. Use arrows to show what goes into each part (reactants) and what comes out (products). Flow Unit Kuna No Rocket Science Flow Unit
The Correct Answer and Explanation is:
The diagram is of a chloroplast, the organelle where photosynthesis happens.
1. Label the two parts of the chloroplast:
- Thylakoids (or Grana): The stacks of flattened, disk-like structures inside the chloroplast. You can draw a line pointing to one of these stacks and label it Thylakoids or Grana (a stack of thylakoids is a granum, plural grana).
- Stroma: The fluid-filled space surrounding the thylakoids. You can draw a line pointing to the empty space inside the chloroplast and label it Stroma.
2. Label where each step of photosynthesis occurs and the inputs/outputs:
Photosynthesis happens in two main stages. Here’s what to label for each part:
In the Thylakoids (Grana):
- Process: Label this area with Light-Dependent Reactions.
- Reactants (what goes IN):
- Draw an arrow pointing into the thylakoids labeled Light.
- Draw another arrow pointing in labeled Water (H₂O).
- Products (what comes OUT):
- Draw an arrow coming out labeled Oxygen (O₂).
- Draw arrows coming out and pointing towards the stroma labeled ATP and NADPH. These are energy-carrying molecules needed for the next step.
In the Stroma:
- Process: Label this area with Calvin Cycle (or Light-Independent Reactions).
- Reactants (what goes IN):
- Draw an arrow pointing into the stroma labeled Carbon Dioxide (CO₂).
- The ATP and NADPH from the thylakoids are also reactants here.
- Products (what comes OUT):
- Draw an arrow coming out labeled Glucose (C₆H₁₂O₆) (or “Sugar”).
- Draw arrows coming out and pointing back towards the thylakoids labeled ADP and NADP+. These are the “used” versions of the energy carriers, ready to be recharged in the light-dependent reactions.
