The rate of photosynthesis, as indicated by oxygen production, in plant cells was measured as the
light intensity was increased in four experiments. All other factors except for temperature and
carbon dioxide where kept constant. The results of the four experiments are shown in the following
graph. Which of the following best explains why photosynthesis did not appear to be occurring in
Experiment 4. Select one: A. The light intensity was too low to enable the light-dependent
reactions of photosynthesis to proceed, and so no oxygen was produced. B. The enzymes
associated with photosynthesis were denatured, stopping the process from occurring. C. The
carbon dioxide concentration was too low to allow photosynthesis to occur. D. The rate of
photosynthesis was so low, that all the oxygen produced was used up by cellular respiration in the
plant..
The rate of photosynthesis as indicated by oxygen productio.pdf
1. The rate of photosynthesis, as indicated by oxygen production, in plant cells was measured as the
light intensity was increased in four experiments. All other factors except for temperature and
carbon dioxide where kept constant. The results of the four experiments are shown in the following
graph. Which of the following best explains why photosynthesis did not appear to be occurring in
Experiment 4. Select one: A. The light intensity was too low to enable the light-dependent
reactions of photosynthesis to proceed, and so no oxygen was produced. B. The enzymes
associated with photosynthesis were denatured, stopping the process from occurring. C. The
carbon dioxide concentration was too low to allow photosynthesis to occur. D. The rate of
photosynthesis was so low, that all the oxygen produced was used up by cellular respiration in the
plant.
