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Pset7questions2013

Continuing with the previous question which of the

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Question 8 of 16 4.0 Points Continuing with the previous question, which of the following is true? Pick ONE: A. CAM plants convert the ordinary daily closing/noctural opening stomatal cycle into a reversed cycle of nocturnal closing and diurnal opening B. CO 2 consumption by PEP carboxylase at night will lower the [CO 2 ] inside the leaf (or stem, e.g. in leafless cacti); guard cells will respond to this low [CO 2 ] by closing the stomates. C. During the day, decarboxylation will tend to cause the internal [CO 2 ] to rise (it can even go above atmospheric [CO 2 ], if decarboxylase activity is high enough compared to RuBP carboxylase), the negative feedback response
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5/20/13 4:18 PM 2013 Problem Set 7 Plant Biology Lectures 3-7 Page 6 of 13 https://coursework.stanford.edu/portal/tool/1c2f43e9-1653-4e97-98f7-93a4fbb2cb09/jsf/delivery/beginTakingAssessment of guard cells to [CO 2 ] could override the ordinary opening response to light, causing stomatal opening. D. All are correct E. All are incorrect Reset Selection Mark for Review What's This? Question 9 of 16 4.0 Points Which of the following statements about photosynthesis is false? Reset Selection Mark for Review What's This? Question 10 of 16 4.0 Points A molecule that has an absorption spectrum showing maximum absorption within the wavelengths of visible light is Reset Selection Mark for Review What's This? Question 11 of 16 4.0 Points Why is the absorption spectrum of chlorophyll a not identical to the action spectrum of photosynthesis?
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5/20/13 4:18 PM 2013 Problem Set 7 Plant Biology Lectures 3-7 Page 7 of 13 https://coursework.stanford.edu/portal/tool/1c2f43e9-1653-4e97-98f7-93a4fbb2cb09/jsf/delivery/beginTakingAssessment E. Chlorophyll a can be activated by absorbing a photon of light. Reset Selection Mark for Review What's This?
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