The Original Energy Source, the Sun and Biosynthesis
pg. 347-353
Pre-read questions 1-15 independently. With a partner, read "We Can't Live
Without Them" and answer the related questions. PLEASE skip the first paragraph.
1. Before energy is chemically stored in ATP, what form was it in?
2. What do you call organisms that make their own food? Give an example.
3. What do you call organisms that cannot make their own food? Give an example.
4. How do organisms that do NOT make their own food get energy?
5. Herbivores are plant eaters-they use _______ stored in plants to stay alive.
6. Herbivores use the energy rich molecules found in plants such as sugars, fats and
proteins to stay alive through the process called _____________________.
7. Where did this energy originally come from?
8. An animal that eats plants and animals is called a ___________; an animal that only
eats other animals is called a ___________.
9. The tissue of an animal is made of energy rich molecules such as sugars, fats and
proteins. Omnivores or carnivores break down energy rich molecules to stay alive
through the process called _____________________.
10. When animals eat other animals, they use the energy formed in _______ to stay
alive.
11. Where did this energy originally come from?
12. Herbivores, omnivores and carnivores are examples of ________________.
13. What is a heterotroph?
14. Organisms that get their energy through sunlight, minerals and air are called
_______________. They do this by capturing energy from the sun or chemicals.
15. Copy the diagram on pg. 348 into your comp book. Write a more a detailed caption
explaining the diagram. Do NOT copy the book caption-not enough explaining :)
Pre-read questions 16-25 independently. Then continue reading pg. 350 -353 with
your partner and answer the following questions. Do NOT be intimidated by the
diagrams!
16. Living systems are continually breaking down and building up molecules. How do
you get the energy from a French fry?
17. All of the chemical activities and changes in a cell or an organism are collectively
called what?
18. What are the two types of reactions that can occur in cells?
19. Write an example of a synthesis reaction and a breakdown (decomposition) reaction.
20. What else besides energy does food provide?
21. How do animal’s breakdown food into organic molecules?
22. How do enzymes help?
23. Where does final digestion occur?
24. After molecules leave the intestine, how do they get into the cell?
25. Summarize the last paragraph on pg. 352.