Exercise 4

Exercise 4 - dioxide into sugar? The light-independent...

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Vanessa Reapor Biology 111, Section 23 May 1, 2009 Exercise 4: Photosynthesis 1. Considering the absorption spectrum of the chlorophyll extract you made, what are the major absorbance peaks? Which wavelengths are transmitted most? The absorbance peaks of chlorophyll are 420 nm and 440 nm for the first peak, and 640 nm and 660 nm for the second peak. Red and blue are the wavelengths that are transmitted the most. Chlorophyll looks green because it absorbs blue and red light, which reflect the green pigmentation. 6. Recalling that photosynthesis consists of two parts, which part converts carbon
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Unformatted text preview: dioxide into sugar? The light-independent stage of photosynthesis converts carbon dioxide into sugar/carbohydrates. 13. What changes in the composition of the earths atmosphere would be expected if a massive dust cloud resulting from an asteroid blocked out the sun for months? All forms of life would slowly decrease if a massive dust cloud blocked out the sun for months. All living organisms NEED light that is provided by the sun to carry out aerobic cellular respiration....
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This note was uploaded on 12/12/2011 for the course BIO 111 taught by Professor Goschke during the Spring '07 term at Cal Poly.

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Exercise 4 - dioxide into sugar? The light-independent...

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