AP Biology Lab Four: Plant Pigments and Photosynthesis Abstract: The purpose of this lab is to separate and identify pigments and other molecules within plant cells by a process called chromatography. We will also be measuring the rate of photosynthesis in isolated chloroplasts. Beta carotene‚ the most abundant carotene in plants‚ is carried along near the solvent front because it is very soluble in the solvent being used and because it forms no hydrogen bonds with cellulose. Xanthophyll is found
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plant. Plants and trees cover about thirty percent of the planet’s surface‚ as stated in NASA’s Earth Observatory division. They use a process called photosynthesis‚ which allows plants to take energy from the Sun and later using it as food‚ as well as producing oxygen through the process of respiration. So how does it happen? The process of photosynthesis occurs as follows. First‚ the plant uses the sunlight and the green color in their leaves to make sugar from carbon dioxide‚ or CO2‚ which is in the
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Method 1) Take a "volume" measuring device‚ and fill it with the total amount of water‚ the bottle can hold. We then put the same‚ empty bottle into the container‚ in a way‚ that it sinks to the bottom of the akwarium. We can then measure the new height and multiply it by the volume of the liquid. This will clearly give us the volume of a bottle. Method 2) We could pour water into a 0‚5 litre coke bottle‚ and weigh how much it would weigh. We could do the same thing with an empty bottle. The
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A common complaint many students have regarding GPA is that it doesn’t measure intelligence. I understand this on a basic level‚ yet I contend that it does measure work ethic and through that‚ intelligence. In the same way‚ I’m proud of my GPA not because of the connotation that I must be smart but because it describes my work ethic: who I am. Outside academia‚ most other numbers are irrelevant. An employer never asks for ACT scores on an application; no one outside the military cares for the ASVAB
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Reading Guide Chapter 10: Photosynthesis Fred and Theresa Holtzclaw Copyright © 2010 Pearson Education‚ Inc. - 1 - Name_______________________Period___________ Chapter 10: Photosynthesis This chapter is as challenging as the one you just finished on cellular respiration. However‚ conceptually it will be a little easier because the concepts learned in Chapter 9—namely‚ chemiosmosis and an electron transport system—will play a central role in photosynthesis. 1. As a review‚ define
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PHOTOSYNTHESIS (How do the light dependent and light independent reactions provide food for a plant?) Why? How important are plants to life on Earth? Could life as we know it continue if there were no plants? Read on the find out why plants are truly the cornerstone of life. Model 1: An Overview of Photosynthesis and Chloroplast Structure 6CO2 + 6H2O C6H12O6 + 6O2 Site of the Calvin cycle‚ or light independent reactions 6 H 2O + 6 CO2 Contains chlorophyll. This is the site of the light dependent
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Cellular Respiration vs. Photosynthesis To obtain energy needed for life‚ organisms depend on the processes of cellular respiration and photosynthesis. Though they share the same function of changing energy from one form to another‚ there are many differences between cellular respiration and photosynthesis in regard to the input and output molecules‚ energetics‚ cellular location‚ and ecological importance. The chemical equations of cellular respiration and photosynthesis are opposites. The reactants
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Biology lab: measuring the effect of light intensity on plant growth Aim: Investigate the effect of light intensity on plant growth Hypothesis: Light intensity will have an effect on plant growth. With an increase in light intensity there will be plant growth at a faster rate in comparison to when the light intensity is low where plant growth is limited and will take place slowly. When there’s too much light intensity‚ the light intensity will no longer become a limiting factor. A limiting
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calculate the fraction that will be used up after 6.0 minutes. 4. [15 points] The rate law for the decomposition of ozone to molecular oxygen 3 O3 (g) −→ 3 O2 (g) is rate = k [O3 ]2 . [O2 ] The mechanism for this process is k1 O3 O + O2 k−1 k 2 O + O3 −→ 2 O2 Derive a rate law from these elementary steps. Clearly state the assumptions you use in the derivation. Explain why the rate decreases with increasing O2 concentration. 5. [15 points] Consider the following
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this experiment‚ Egeria densa was observed using a microscope. The task was to observe and identify the different types of cell‚ cytoplasmic streaming‚ and plasmolysis of Egeria densa. First‚ the microscope was examined and investigated to master the use of the equipment. A microscope slide grid which was on the slide glass was required to be seen clearly using 4x‚ 10x and 30x. During the latter part of the experiment‚ the Egeria densa was observed using the microscope to understand the use of microscope
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