What barrier to solar power has been overcome

Reference no: EM132858384

Photosynthesis

This chapter will deal with photosynthesis: the series of chemical reactions in plants and other organisms that use carbon dioxide to form food (carbohydrates)

A) Web site name: Florida State College Jacksonville

Read the section on Photosynthesis

1) What does "photo synthesis" literally mean ?
2) In which country was Van Helmont born? ___________________________

3) What did Van Helmont's experiment show about plants ? _______________

4) In 1766 Joseph Priestley had a meeting with _________________________

5) How did Joseph Priestley find that plants produce oxygen ? _____________ ____________________________________

6) What type of drink did Priestley invent? ____________________________

7) What did Jan Ingenhousz discover about photosynthesis? _____

8) What two colors of light are most effective in photosynthesis ? _________________ and ________________

B) Web site name: New Scientist magazine

9) What is the scientific name for this green sea slug?

10) What does it feed on? ___________________________________________

11) For how much of its life does the sea slug need to eat? _________________

12) Explain in your own words what "mystery" remained?

13) What is the scientific name of the sea slugs favorite food?

14) Why is it important that researchers found the algal gene in the sea slugs' sex cells?

15) Why could humans not become photosynthetic?

C) Web site name: Online Biology Book

16) Which two living things, apart from plants, can carry out photosynthesis?

17) Write down the chemical equation for photosynthesis : ___________________________________________________________

18) What is the function of xylem? _________________________________

19) How does carbon dioxide enter the leaf?

20) What is a pigment? ________________________________________

21) Where in the chloroplast do the Light Reactions take place ? ____________

22) In the light reactions the energy is converted into: __________ and ______________.

23) Which photosystem ( P680 or P700 ) splits water ? _________________

24) Where do "halobacteria" live? ___________________________________

25) When did Calvin win the Nobel Prize for Chemistry? _________________

D. Web site name: Arizona State University

Read "Why study photosynthesis"

26) What three examples of stored energy come from photosynthesis?

27) What does a plant use carbohydrates for? ____________________________

28) What country uses ethanol as a major automobile fuel? _________________

29) What is the connection between plastics and photosynthesis? __

30) Why does photosynthesis counteract the effect of combustion of fossil fuels?

31) List one more reason that photosynthesis is important:

E. Web site name: Scientific American

Read "The Warm Hues of Fall Foliage"

32) What was the original explanation for the red color of fall leaves, back at the turn of the 20th century?

33) Why does sunlight do more damage to the leaf in the fall than in the summer?

34) What experiment with dogwood leaves supports the idea of the red color being sunscreen?

35) What parts of the cell can be damaged by "free radicals"?

36) Why does Linda Chalker-Scott disagree with the "sunscreen" idea?

37) What other explanations have been suggested for the red colors?

38) Why do none of the theories fully explain the red colors of fall?

F. Web site name: Science Daily

39) What barrier to solar power has been overcome? _____________________

40) Who is the senior author of this paper?

41) What is the connection here with photosynthesis? _____________________

42) What new catalyst is used in this process?

43) "In one hour, enough sunlight strikes the earth to _____________________

44) What are two problems with current electrolyzers?

45) Do you agree with Nocera's estimate that houses could be powered by the sun in 10 years? Give your reasons.

Attachment:- Photosynthesis.rar

Reference no: EM132858384

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