Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 4

Effects on Photosynthesis. Assume that you have an illuminated suspension of Chlorella cells carrying out photosynthesis in the presence of 0.1% carbon dioxide and 20% oxygen. What will be the short-term effects of the following changes in conditions on the levels of 3-phosphoglycerate and ribulose- 1,5-bisphosphate Explain your answer in each case.
(a)Carbon dioxide concentration is suddenly reduced 1000-fold.
(b)Light is restricted to green wavelengths (510-550 nm).
(c)An inhibitor of photosystem II is added.
(d)Oxygen concentration is reduced from 20% to 1%.