1. Photosynthesis and Cellular Respiration
7th Grade

2. Photosynthesis
Food-making process in plants
Glucose is the food

4. Photosynthesis mostly occurs in the leaves of plants
Chlorophylll in the chloroplasts of the cells is responsible for the plants ability to collect light energy to perform the process of photosynthesis
Chlorophyll also is responsible for the green color of plants
Why do plants look green? What colors are being reflected? What colors are being absorbed?

5. Cellular Respiration
The process of breaking down glucose to get energy

7. Aerobic Respiration vs. Anaerobic Respiration
Aerobic – uses oxygen
Example: Cellular Respiration
Anaerobic – does not use oxygen
Example: Fermentation

8. Fermentation
The process of breaking down sugars to get energy without oxygen
Which process produces more energy? Cellular respiration or fermentation?

9. Why are decomposers important for the continuation of life?
Trophic Levels
Producer - bottom level, go through photosynthesis and make food for themselves
Consumer – something that gets its food by consuming (eating) something else
Primary (1st level) – herbivores (plant eaters)
Secondary (2nd level) – carnivores (meat eaters) or omnivores (eat both plants and animals)
Tertiary consumers (3rd level)
Quaternary consumers (4th level)
Decomposer – Get energy by eating and decomposing already dead organisms
Why are decomposers important for the continuation of life?

11. Which organisms are producers? How do you know?
Label your primary consumers. What do they all have in common?
Label the secondary consumers. What do they have in common?
Are there tertiary consumers? What are they? What about quaternary consumers?

12. A population is the number of a certain species of organism that lives in a given area.
What would happen if an organism traditionally a part of the ecosystem was missing from an ecosystem?

13. Read the article about the Yellowstone Ecosystem.
Create a food web with your group of the ecosystem including elk, wolves, willows, and beavers (other organisms can be included if desired).
Label the trophic levels and the amount of energy distributed to organisms.
Explain what happens when an organism is taken out of the habitat and why those populations are important to keep in tact.
Be sure your food web is colorful and easy to read

14. Carbon Cycle

15. Nitrogen Cycle