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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respiration. The main role is to transport electrons formed from NADH to oxygen in order to release the energy cells use to make ATP. Photosynthesis: What is the overall goal of photosynthesis? The overall goal of photosynthesis is to convert light energy from the sun into a chemical energy of sugar and other organic molecules. For example‚ apple trees use photosynthesis to produce both oxygen and fruit. Animal life needs oxygen
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Compare and Contrast Photosynthesis and Cellular Respiration Opposites in photosynthesis and cellular respiration. Is that photosynthesis is taking in carbon dioxide and water by absorbing energy from the sun and then release oxygen and storing glucose. In cellular respiration glucose and oxygen enters and they are converted into carbon dioxide‚ water and ATP energy. But they work alike because they both have electron transport chains and similarly ATP.
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Associate Program Material Cell Energy Worksheet Answer the following questions: Cellular respiration: • What is cellular respiration and what are its three stages? A living version of internal combustion-is the main way that chemical energy is harvested from food and converted to ATP energy‚ it is also called an aerobic process‚ which is just another way of saying that it requires oxygen. So cellular respiration is defined as the aerobic harvesting of chemical energy
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Chemoheterotrophic organisms obtain energy from the oxidation of organic compounds 7. What is photosynthesis and where does it take place? Photosynthesis is a process used by plants and other autotrophic organisms to convert light energy‚ normally from the sun‚ into chemical energy that can be used to fuel the organisms’ activities. Carbohydrates‚ such as sugars‚ are synthesized from carbon dioxide and water Photosynthesis is the means by which plants harvest light energy to make their own food it takes place
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