Lil Dejay C4 2/10/14 Photosynthesis: Making Energy Chloroplasts Photosynthesis is a process in which sunlight energy is used to make glucose. The site of photosynthesis is in the chloroplast – an organelle found in the leaves of green plants. The main functions of chloroplasts are to produce food (glucose) during photosynthesis‚ and to store food energy. Chloroplasts contain the pigment‚ chlorophyll. Chlorophyll absorbs most of the colors in the color spectrum‚ and reflects only green and yellow
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value for this measurement as the initial measurement of the intercept. o Return to the curve-fitting view and enter this P value directly into the intercept box. • Slope (of the line): photochemical efficiency; indicates the rate at which photosynthesis increases as light intensity increases. o To manipulate the slope: click on the up arrow next to the slope function (you will see the line rise up and begin to form a curve). o Increase the slope of the line until the curve looks like it
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ENVS 1000 – ENVIRONMENTAL SCIENCE MIDTERM TEST QUESTION BOOKLET Instructor: Mary Olaveson VERSION Complete the following information: Name: INDICATE VERSION ON YOUR SCANTRON PRACTICE MIDTERM TEST Student #: ANSWER KEY Important Information – CRN: # __________ Please Read Before You Begin Your Test DO NOT REMOVE STAPLES FROM TEST QUESTION BOOKLET RETURN TEST QUESTION BOOKLET with SCANTRON at end of TEST Before you begin the Test: 1. Record your NAME and STUDENT # on the Scantron Sheet
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reduce water resistance. The leaves of the floating plants are broad‚ leathery and thick. This is because to prevent water to diffuse easily into the plants and this can prevent the plants from drowning. It also creates a large surface area for photosynthesis
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some bacteria. A small number of bacteria‚ including the ancient Archaea group are capable of generating food from sulfur or other chemical reactions‚ but the majority of autotrophs rely on sunlight to carry out a process called photosynthesis. In the process of “photosynthesis”‚ specialized molecules capture carbon from the air and bind it to water using energy produced from sunlight. There are two classes of autotrophs: chemoautotrophs and photoautotrophs. Chemoautotrophs are able to “fix”
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Plant Pigments and Photosynthesis Problem: We are going to separate and identify pigments and other molecules from cell extracts through a process called chromatography. We will also test the theory that light and chloroplasts are required for light reactions to occur. Background: Pigments are chemical compounds which reflect only certain wavelengths of visible light. This is what makes them seem colorful. Many things contain pigments including flowers‚ corals‚ and even skin. More important than
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A. Converting photosynthesis rate from volume of oxygen produced per gram leaf per minute to mol CO2 fixed per area of leaf (in m2) per second. B. Why would one want to express photosynthesis rate as µmol CO2 m-2 s-1? What is the advantage. Answers: A. How to convert photosynthesis rate from volume of oxygen produced per gram leaf per minute to mol CO2 fixed per area of leaf (in m2) per second. Photosynthesis rate can be measured either by seeing how much oxygen is produced by a leaf
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________________________ Student Exploration: Photosynthesis Lab Vocabulary: carbon dioxide‚ chlorophyll‚ glucose‚ limiting factor‚ nanometer‚ photosynthesis‚ wavelength Prior Knowledge Questions (Do these BEFORE using the Gizmo.) • To survive‚ what gas do we need to breathe in? ___________________________________ • Where is this gas produced? __________________________________________________ Gizmo Warm-up During photosynthesis‚ plants use the energy of light to produce glucose
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I) Introduction In this lab‚ a test was conducted to determine how the relative redox activity of chloroplasts from spinach leaves‚ which were performing photosynthesis‚ would change when in the presence or absence of light. To observe these changes in redox activity‚ the chloroplasts were exposed to DCPIP‚ a chemical that changes color according to such activity. By determining the redox activity of the chloroplasts‚ it could then be inferred which chloroplasts were photosynthesizing more actively
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Chapter 1/2 Bio Study Guide Section 1.1-Scientific Method Science- An organized way of gathering and analyzing evidence about the natural world Scientific Method 1. Collecting observations 2. Asking questions 3. Forming a hypothesis 4. Experiment 5. Analyze results and draw conclusions 6. Revise hypothesis Control Group- a group in the experiment that receives no experimental treatment Independent Variable- Variable that you change in the experiment X-axis Dependent
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