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Rio Salado BIO101 lab 5




Question;1. a. What is the name of the pigment that;captures light? (2 points) b. Why does the pigment appear green? (2;points)--Answer below;2. List two variables besides the;wavelength (color) of light which might affect the rate of food production in;plants. (4 points)a.b.--Answer below;3.;Why is chlorophyll important for all biological life? (5 points)--Answer below;4. a. In Part I of the procedure, what is;the name of the indicator used to identify the presence of CO2? (2 points) b. What color did the indicator turn after;blowing air into the water through the straw? (2 points)--Answer below;5. a. What color did the indicator turn;after the tube was placed under a light source for 30 minutes? (2 points) b. Why did this occur? (3 points)--Answer;below;6. List the four common pigments found in;plants and their functions. (4 points)a.b.c.d.--Answer below;7. If the Rf factor of a pigment is.8400;and the distance that the solvent traveled is 12 cm, how far did the pigment;travel? (5 points)--Answer below;8. List the pigments extracted from the;spinach leaves and their corresponding Rf values, from lowest to highest Rf;value (4 points). a. pigment, Rf valueb.;pigment, Rf valuec. pigment, Rf valued. pigment, Rf value--Answer below;9. Based on the results, which pigment has;the highest molecular weight? (5 points)--Answer below;10. From the chromatography lab, which;pigments were soluble in the acetone? (5 points)--Answer below;11. The earth?s early atmosphere did not;contain oxygen. This changed dramatically once the early cells underwent;photosynthesis. Explain why photosynthesis could have occurred in such an;atmosphere and how it eventually affected the evolution of other organisms. (10;points)--Answer below;12. a. In reviewing the data from the floating;disk experiment, which factor had a greater impact on the rate of;photosynthesis (light intensity or concentration of carbon dioxide)? (5 points)b. How did the student come to this;conclusion? (5 points)--Answer below;13. Based on the data presented in the;table, which two containers could be correctly used to compare the rate of;photosynthesis at two different light intensities? (5 points)a. 1 and 2b. 2 and;3c. 1 and 5d. 5 and 6e. 4 and 5--Answer below;14. Compare Containers 1 and 2. What independent variable is tested by this;comparison? (5 points)a. Kind of plantb. Height of plantc. Light intensityd.;Distance from light sourcee. Light source--Answer below;15. Which container had the slowest rate of;photosynthesis? (5 points)a. 1 b.;2 c. 3 d. 4 e. 5 f. 6--Answer below;16. (Application) How might the information;gained from this lab pertaining to photosynthesis and pigments be useful to the;student or how can the student apply this knowledge to everyday life as a;non-scientist? (20 points)--Answer below


Paper#63079 | Written in 18-Jul-2015

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