1. Cells and Energy!!
Part 2

2. 4.2 Overview of Photosynthesis
Objectives
Explain what producer organisms are
Summarize how photosynthesis works

3. Key Concept: The overall process of photosynthesis produces sugars that store chemical energy
Main Idea #1: Photosynthetic organisms are producers
Main Idea #2: Photosynthesis in plants occurs in chloroplasts

4. Main Idea #1: Photosynthetic organisms are producers
Producers make their own source of chemical energy.
Plants use photosynthesis and are producers.
Photosynthesis captures energy from sunlight to make sugars.

5. Chlorophyll is a molecule that absorbs light energy.
Chloroplast
Leaf cell
Leaf
Chlorophyll is a molecule that absorbs light energy.
In plants, chlorophyll is found in organelles called chloroplasts.

6. Main Idea #2: Photosynthesis in plants occurs in chloroplasts
stroma
grana (thylakoids)
Photosynthesis takes place in two parts of chloroplasts.
grana (thylakoids)
stroma
Stroma is the fluid surrounding the grana inside a chloroplast