Chapter 4 Cell Activities

Chapter 4C Photosynthesis

Process that most producer organisms use to make their food Photosynthesis Process that most producer organisms use to make their food

III. Photosynthesis (Fig. 4-9)

What would slow down or even stop photosynthesis?

carbon dioxide + water + light energy Photosynthesis carbon dioxide + water + light energy sugar + oxygen

III. Photosynthesis A. Kinetic energy (light) is changed to potential energy (sugar). B. Special pigments, organelles, and enzymes must be present.

B. Special pigments Chlorophyll is the primary pigment of photosynthesis a) Green

1. Chlorophyll c) located in chloroplasts b)Used to power the process of photosynthesis c) located in chloroplasts

B. Special organelles 2. Chloroplast a) discussed in Ch. 3

B. Special enzymes 3. Changing carbon dioxide and water into sugar requires several different enzymes.

III. Photosynthesis C. Sugar molecules 1. Stores potential energy 2. Form some of the structural parts of cells

Consumers obtain their energy by eating producers or other consumers. RECAP Consumers obtain their energy by eating producers or other consumers.