What is the name of the pigment that captures light directly in photosynthesis? (2 points)Why does the pigment appear green? (2 points)
List two variables besides the wavelength (color) of light which might affect the rate of food production in plants. (4 points)
Why is chlorophyll important for all biological life? (5 points)
In Part I of the procedure, what is the name of the indicator used to identify the presence of CO2? (2 points)What color did the indicator turn after blowing air into the water through the straw? (2 points)
What color did the indicator turn after the tube was placed under a light source for 30 minutes? (2 points) Why did this occur? (3 points)
List the functions of these four common pigments found in plants. (4 points)
Chlorophyll aChlorophyll bXanthophyllCarotene
If the Rf factor of a pigment is .3750 and the distance that the solvent traveled is 8 cm, how far did the pigment travel? (5 points)List the Rf values for each of the pigments extracted from the spinach leaves, as seen in the chromatography procedure (4 points).
CaroteneXanthophyllChlorophyll aChlorophyll b
Based on the results, which pigment has the highest molecular weight? (5 points)From the chromatography lab, which pigments were soluble in the acetone? (5 points)The earth’s early atmosphere did not contain oxygen. This changed dramatically once the early cells underwent photosynthesis.
Explain how photosynthesis was able to occur in earth’s early atmosphere. (5 points)How did photosynthesis eventually affect the evolution of other organisms? (5 points)
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)Explain how you came to this conclusion? (5 points)
**INFORMATION NEEDED TO COMPLETE THE FOLLOWING PROBLEMS**Independent Variable: This is the cause.Dependent Variable: This is the response or effect.One hundred samples of several different plants were placed
in each of six sealed containers with water in them. At the end of two
days the amount of oxygen produced was
measured. Results are shown in the table below.
Height of Plant
Source of Light
Distance from Light
ml O2 Produced
Multiple Choice: 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?
1 and 22 and 31 and 55 and 64 and 5
Multiple Choice: Compare Containers 1 and 2. What independent variable is tested by this comparison? (5 points)
Kind of plantHeight of plantLight intensityDistance from light sourceLight source
Multiple Choice: Which container had the slowest rate of photosynthesis? (5 points)
(Application) How might the
information gained from this lab pertaining to photosynthesis and
pigments be useful to you, or how can you apply this knowledge to your
everyday life as a non-scientist? The application will be graded
according to the rubric below. (20 points) Key components of critical thinking and application include the following:Demonstrates application and comprehension of the scientific principles.Displays competence in applying scientific knowledge to your personal or professional life.Relevant content is supported by facts, data, and detailed examples.The application paragraph is organized and structured.
Critical Thinking and Application of Information
Is your application a detailed description of how the lab content is relevant to your life?
Application did not adequately demonstrate
application or comprehension of the scientific principles. Did not
include detailed examples, facts or data. Or the application was not
A few areas of the application demonstrated
some application and comprehension of the scientific principles by
applying the knowledge to the student’s personal and professional life,
but lacked detailed examples to support the content provided.
Application demonstrated some organization and structure within the
Most areas of the application demonstrated
evidence of critical thinking and comprehension of the scientific
principles. Displayed good competence and the relevant content was
supported with good use of examples that apply the concepts and describe
how the information will be relevant and useful to the student’s
personal or professional life. The application paragraph is primarily
presented in an organized and structured manner.
Application included a complete and detailed
description of how the concepts are relevant and useful or applicable
to the student’s personal or professional life. The application
includes detailed examples and reveals insight into the scientific
principles. The application paragraph maintains a strong sense of
purpose and organization throughout.
EXCELLENT VERY GOOD GOOD FAIR NEEDS IMPROVEMENT CRITICAL THINKING AND APPLICATION OF INFORMATION (20 points) 18-20 16-17 14-15 12-13 Below 12
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