Principles of Biology : Laboratory
Lab 8 : Photosynthesis
Theme: Look at the theme I gave you in Lab 7 and write a similar, short, concise theme for our photosynthesis lab.
Materials and Methods: "Biology
Lab Manual" by The College Board, 2001.
pages 45-53. Also, an absorbtion spectrum of spinach extract was obtained by use of the spectrophotometer.
Note: Please submit your groups data to me as soon as possible. Get your data and click here to submit it.
Results: Individual group data is presented in the lab book on page 50. See http://www.siskiyous.edu/class/bio1/lab8/photosynthesis.data.html
for spectrographic data and submitted class data.
Analysis and Conclusion Section :
You may say "See lab book pages 51-53 for the analysis of
the first two parts of the lab." For this lab, please complete page 51
and the questions on pages 52 and 53. Also, I want you to draw a graph
of the spectrographic data presented in the link above. It is explained
in the link.
Interpret the spectrograph of spinach extract by answering these questions in your report:
1) What wavelengths of light show the maximum absorbance? What color(s) is(are) these?
2) What wavelengths of light show the maximum reflectance (minimum absorbance)? What color(s) is(are) these?
3) Why do your answers to the above questions "make sense" because of what you already know about plants?
Thursday, October 16, 4:30 p.m.