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Assignment Content
Question 1Question 1
1 PointProcedure 7.1 pg. 73:How many pigments are in a plant extract? How can you isolate these pigments?
Question 2Question 2
4 PointsProcedure 7.1 pg. 74:7.Calculate the Rf value for each pigment:Carotene-Xanthophyll-Chlorophylla -Chlorophyllb-
Question 3Question 3
1 PointProcedure 7.1 pg. 74:Question 1.a What does a small Rf value tell you about the characteristics of the moving molecules?
Question 4Question 4
1 PointProcedure 7.1 pg. 74:Question 1.b Which are more soluble in the chromatography solvent, xanthophylls or chlorophyll a?
Question 5Question 5
1 PointProcedure 7.1 pg. 74:Question 1.c Would you expect the Rf value of a pigment to change if you altered the composition of the solvent? Why or why not?
Question 6Question 6
1 PointProcedure 7.1 pg. 74:Question 1.d If yellow xanthophylls were present in the extract, why did the extract appear green?
Question 7Question 7
1 PointProcedure 7.1 pg. 74:Question 1.e Is it possible to have a Rf value greater than 1? Why or why not?
Question 8Question 8
1 PointAttach a picture of your completed chromatogram in the Additional Content section of this lab.Yes, I attached my chromatogram pictureNo, I failed to attach my picture
Question 9Question 9
1 PointProcedure 7.2 pg. 75:Question 2.a What colors are diminished?
Question 10Question 10
1 PointProcedure 7.2 pg. 75:Question 2.b What color of lights is least effective for plant growth? Why?
Question 11Question 11
1 PointProcedure 7.2 pg. 75:Draw and attach an absorption spectrum for chlorophyll to the Additional Content sectionYes, I attached the absorption spectrumNo, I failed to attach my drawing
Question 12Question 12
1 PointProcedure 7.3 pg. 75:Question 3.a What color light does chlorophyll fluoresce?
Question 13Question 13
1 PointProcedure 7.3 pg. 75:Questions 3.b. Could chlorophyll fluoresce blue light? Why or why not?
Question 14Question 14
1 PointQuestions for Further Thought and Study pg. 76:1.Why does chlorophyll appear green to your eyes?
Question 15Question 15
1 PointQuestions for Further Thought and Study pg. 76:2.Durring darkness, what happens to starch formed in a leaf?
Question 16Question 16
1 PointQuestions for Further Thought and Study pg. 76:3.What causes leaves to turn from green to yellow and red in autumn?
Question 17Question 17
1 PointQuestions for Further Thought and Study pg. 76:4.Of what value to plants is starch?
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