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Part 1 Introduction to Photosynthesis This assessment is a presentation on photosynthesis and cellular respiration. Your presentation should include the following: 1. Detailed descriptions of what happens to the carbon atom: a. during photosynthesis (the light-dependent reactions and the light-independent reactions) b. transitioning between photosynthesis and respiration c. during cellular respiration or fermentation 2. An explanation of how the carbon atom is transferred between molecules. Please include descriptions of the molecules involved in each of the processes above and be sure to mention the movement of electrons and energy as the carbon atom moves from one reaction to another. 3. Complete sentences should be used in all written descriptions and explanations. 4. Illustrations, diagrams, or images that help explain the carbon atom’s journey. a. You can create your own images, or use images from websites or other sources. b. If you use premade images, you will need to give a reference of the source of that image and create your own unique caption to describe the image. This assignment is a big one. Here are some help files to aid you in your presentation: Pre-Writing Outline: Click Here to Open the Pre-Writing Document Assignment Directions Video: Click Here to Open the 2.06 Assignment Directions Intro to Photosynthesis Video: Click Here to Open a Video on Photosynthesis Light Dependent Reactions Video: Click Here to Open Open a Video on the Light Dependent Reaction of Photosynthesis Light Independent Reactions Video: Click Here to Open a Video on the Light Independent Reaction of Photosynthesis Cellular Respiration 1. 1. Where does cellular respiration take place? 1. 2. How did your carbon atom get into cellular respiration? (Hint: Your carbon atom is part of what molecule?) (First stage of cellular respiration) 1. 1. 1. 1. 1. 1. 1. 1. Where does it occur? 2. What is happening to your carbon atom? 3. What is being released in this stage? 4. Is oxygen required? 2. What is happening to your carbon atom? 3. Is oxygen required? 1. Where does it occur? (Second stage of cellular respiration) 1. 1. Where does it occur? (Third stage of cellular respiration) 1. 2. Is your carbon atom involved? 1. 3. Where is your carbon atom now? (What is your carbon atom part of?) Part 2 Cell Cycle Lab Report NOTE: This is a virtual lab. On the image, it says “Click Anywhere to Start”. There will be directions as you go. The lab activity will keep count of your data on the right and you can copy this into the data table at the end of each trial. Hypothesis: What do you predict you will find about the number of cells in each of the phases of the cell cycle? Provide an explanation for your prediction. If I analyze the tip of an onion root under a microscope then in each phase the cell cycle the number of cells will increase. Data and Observations: Interphase Prophase Metaphase Anaphase Telophase Cytokinesis Number of Cells in Part 1 34 8 3 2 2 1 Number of Cells in Part 2 49 13 4 3 4 3 Record any observations about the cells you observed (what does the cell look like for each stage): Data Analysis: Calculate the percentage of the cell cycle spent in each stage. Number of cells in given stage ÷ total number of cells counted × 100 = % of the cell cycle spent in this stage Interphase Prophase Metaphase Anaphase Telophase Cytokinesis % of Cells in Part1 (34/50) * 100 = 68% % of Cells in Part2 (49/76) * 100 = 64.5% (13/76) * 100 = 17% (4/76)*100=5.3% (3/76) * 100 = 3.95% (4/76) * 100 = 5.3% (3/76) * 100 = 3.95 % (8/50) * 100 (3/50) * 100 (2/50) * 100 (2/50) * 100 (1/50) * 100 = 16% =6% =4% =4% =2% Create a graph that represents the time spent in each stage of the cell cycle. Graph Conclusion: Be sure to answer the following reflection questions in the conclusion of your lab report: Based on your data, what can you infer about the length of time spent in each stage of the cell cycle? What stages were the longest and shortest? Give a brief explanation of why these stages may have that time period. The interphase was the longest cycle and the Cytokinesis was the shortest. What is a distinguishing visible feature of each stage of the cell cycle? What differences can you see when you compare the nucleus of a dividing cell with that of a nondividing cell? If your observation had not been restricted to the tip of the onion root, how would the results be

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The carbon atom is a essential constituent of all the living systems. It is the primary component of major macromolecules such as carbohydrates, lipids, nucleic acid, and proteins. It is essential for survival, growth, and reproduction in all the living organisms. More than 99% of metabolic activities in living systems are carbon based. Carbon constitutes 9.5% of the total human dry weight.

Two major biological processes are involved in the interconversions of carbon compounds. Carbon dioxide in the atmosphere is fixed as a carbohydrate by plants in a process known as photosynthesis. The photosynthetic process fixes atmospheric carbon dioxide as carbohydrate using radiant energy from the sun. It is a reducing form of energy. All the consumers (Primary or secondary) use this reducing energy stored in carbohydrates to synthesize ATP. ATP is the energy currency of the cell which is required to drive most of the biological reactions in the cell. Reducing energy stored in carbohydrates is used to synthesize ATP in a process known as respiration...

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