Name___________________________________________Date_________________________

Where Do I Get Energy?  Internet Webquest Activity

Directions: Navigate the websites and collect information for each section of this webquest activity.  Please make sure you write your responses in complete sentences and apply care and color in your drawings/sketches.

A. Photosynthesis Animation

http://woodchurchscience.edublogs.org/files/2008/03/photosynthesis-flash.swf

1. What do plants take in through the roots? _____________________________________

2. What moves up stems to the leaves? ____________________________________________

3. Where does the leaf get water? _________________________________________________

4. Where does the leaf get carbon dioxide? _______________________________________

5. What does the leaf combine to make sugar? ____________________________________

6. What does the plant release into the air as a waste? ____________________________

7. What does the plant do with the sugar it makes? ________________________________

8. Why are plants important to the environment?__________________________________

B. Introduction to Photosynthesis - Illuminating Photosynthesis

http://www.pbs.org/wgbh/nova/nature/photosynthesis.html

The Cycle

1. What cycles do you see?

Atomic Shuffle

2. Draw a water molecule.

3. Draw a carbon dioxide molecule.

4. When carbon dioxide enters the cell, describe what happens.

5. Draw the structural molecule of glucose.  How many carbon atoms, oxygen atoms, and hydrogen atoms?

6. Write the overall equation for photosynthesis.

Three Puzzlers

Puzzler 1: How many people can an average tree keep alive with the oxygen it puts out?

                

Puzzler 2: Can a plant stay alive without light?  Explain.

Puzzler 3: Could a plant still grow if it had no oxygen?

                                                                        

C.  The Busy Leaf

http://www.ftexploring.com/photosyn/chloroplast.html

7. Where in a plant does photosynthesis happen?

8. Specifically in which organelle does photosynthesis happen? ____________________

Now Click on “INTRO TO PHOTOSYNTHESIS” at the top left of the page.

9. What are the two very important things that we get out of photosynthesis? Now think…why are those SO important?

10.How does the Earth get all of its energy? _______________________________________

11.What is the difference between an autotroph and a heterotroph? If you can’t figure it out, click on the word autotroph!

12 a. What types of organisms are Primary Producers?

      b. What are Herbivores/Primary Consumers?  Give 3 examples.

      c. What are Carnivores/Secondary Consumers?  Give 3 examples.

      d. What are Decomposers?  Give 3 examples.

      e. What are Omnivores?  Give 3 examples.

D.  Why Leaves Change Color

http://www.esf.edu/pubprog/brochure/leaves/leaves.htm

13. Why do leaves change color (what factors)?

14. What does this say about their ability to carry out photosynthesis?

E.  Endosymbiont Theory: Evolution of Organelles

http://www.sumanasinc.com/webcontent/animations/content/organelles.html

15. What structures do mitochondria and chloroplasts have that are more similar with prokaryotes than with eukaryotes?

16. Which organelle, mitochondrion or chloroplast, is probably the descendent of Cyanobacteria (a photosynthetic bacterium)?

17. According to biologist Lynn Margulist, which organelle ancestor was the first to be ingested?

F.  Cellular Respiration

http://www1.biologie.uni-hamburg.de/b-online/library/falk/Respiration/respiration.htm 

18. What is the precise definition of cellular respiration?

19. Draw the cyclical nature of the energy transformation between photosynthesis and respiration.

20. Where does the process of respiration begin?  Where does this process get completed?

21. What are the products of respiration?

22. Draw the three-dimensional view of the mitochondrion.

23. What is aerobic respiration?

24. What is anaerobic respiration?

25. What is fermentation?  Describe how the process is different in plants and animals.

G.  Biology in Motion

http://www.biologyinmotion.com/atp/index.html

26. What is ATP?

27. How are the foods that we eat and ATP related?

28. THINK: ATP provides the body with energy. Give 3 examples of how ATP is used in organisms.

H.  Enzymes - Watch these short videos on enzymes

http://www.youtube.com/watch?v=CZD5xsOKres

http://www.youtube.com/watch?v=myORDWVzNhc

29. Explain what enzymes do.

I.  Metabolism - Watch this short video on digestion and metabolism

http://highered.mcgraw-hill.com/sites/0073522732/student_view0/chapter4/animation_-_digestion_metabolism_overview.html 

30. Do a search to explain the term metabolism.