Photosynthesis Web Activity
1. Effect of light on Photosynthesis
a. Go to the following website:
http://www.mhhe.com/biosci/genbio/biolink/j_explorations/ch09expl.htm
b. Run 5 trials at differing light intensities and the same wavelength.
c. Record data below
Trial
Light intensity
ATP formed
1
2
3
4
5
d. Run the same experiment varying wavelength and keeping intensity
constant.
Trial
Light wavelength
ATP formed
1
2
3
4
5
Conclusion: What effect do intensity and wavelength have on
photosynthesis?
2. Elodea lab. Go to the following website:
http://www.assessnet.org.uk/file.php/55/html/elodea.html
a. Run trials at each color and colorless (with the CO2 and Light intensity
constant) and then run 4 tests with one color and varying the CO2 and light
intensity. Record below
Run
CO2
Light intensity
Filter
bubbles
1
2
3
4
5
6
7
8
Conclusion:
3. Go to: http://www.pbs.org/wgbh/nova/methuselah/photosynthesis.html#
Complete the summary of photosynthesis below
Photosynthesis
1. __________________–Requires the energy of light
a. Water is split into _____________ + ______________
i. __________________ is released
ii. __________________ becomes an electron
donor.
iii. The electrons form a chain called the Electron
Transport Chain which produces energy used to
produce _________+ ______________.
2. Dark reaction or _____________ __________________.
a. The energy stored in _______ + ____________ is used
to add carbon atoms from _____________ to make a
sugar called _______________.