Organisms through cellular respiration convert energy into ATP. They do this in three distinct stages; glycolysis‚the Krebs cycle and the electron transport chain. The Krebs cycle and electron transport chain are both aerobic process and require oxygen. In certain conditions where oxygen is not present or is low some organisms switch from cellular respiration into alcoholic or lactic acid fermentation. Fermentation is an anaerobic‚ metabolic pathway used to oxidize nicotinamide adenine
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Cellular Respiration in Peas Part A: Abstract: This report examines Cellular Respiration and its functions as well as its function in germinating and non-germination peas. Cellular Respiration can best be described as a complicated string of chemical reactions. The complete Cellular respiration process begins with Glucose being oxidized‚ and the potential energy is transferred to the ATP molecule. The ATP molecule is now free to supply energy to the various processes within the cell. Water
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AP BIOLOGY Lab 5 Cellular Respiration Objective: To calculate the rate of CR from the data. To then relate gas production to respiration rate. Then test the rate of CR in germinating versus non-germinating seeds in a controlled experiment and then test the effect of temperature on the rate of CR in the germinating versus non-germinated seeds in a controlled experiment. Analysis: 1. The CR is higher in the germinating peas in the cold water rather than in the beads or non-germinating peas
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Chapter 7: (Only what is covered in lecture by Feb. 15th) Cellular Respiration – general reaction equation‚ 4 stages of glucose metabolism Know structure/functions of mitochondria and where the 4 stages occur Know starting materials and final products of all four pathways Know how much ATP‚ NADH‚ and FADH2 are made in each stage starting with 1 glucose molecule Know what is meant by an electron transport chain and how it is used to make ATP (sets up a proton gradient. . .) Know the
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in Cell Virtual Lab - Week 3 NAME: ________________________________________ 1. What is the importance of the light and dark reactions in photosynthesis? Photosynthesis works by absorbing light. Our sun gives off energy and the chlorophyll from the plant absorb this energy. The energy is then used to separate water into hydrogen and oxygen and then they combine hydrogen and carbon dioxide to make sugars. 2. What happens to food energy during photosynthesis? During cellular respiration
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Mashrek International School Investigate the Factors that Affect the Rate of Respiration in Yeast. (Temperature) Fawzi El Ansari Biology HL Title: Investigate the Factors that Affect the Rate of Respiration in Yeast. (Temperature) Aim: The aim of this experiment is to investigate the effect of changing the temperature on the rate of respiration in yeast. This will be done by placing equal amounts of yeast in each beaker that contains the same pH solution. Each beaker will be mixed with glucose
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many generations. 5. Students in a biology class ran an experiment on a type of flowering plant. Their goal was to find the optimal time in the plant’s life for flowering. What time period will provide the most flowering plants? Use Table 1-1 to determine your answer. ____ ____ ____ Table 1-1 Day 2 4 6 8 10 a. b. 4 days 6 days Number of Plants Flowering 6 12 18 22 8 c. d. 8 days 10 days 1 Name: ________________________ ____ 6. The three particles that make up atoms are a. protons
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A Study of Cellular Respiration & Gas Production in Peas We conducted this lab in order to determine the relationship between gas production and the cellular respiration rate between germinating peas and dormant peas. Cellular respiration is the procedure of changing the chemical energy of organic molecules into a form of energy that can be used by cells called ATP (adenosine tri-phosphate). Cellular respiration is conducted in 3 processes: Glycolysis‚ Citric Acid Cycle‚ and Oxidative
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to an onion cell? Materials: (per student group): red onion epidermis forceps‚ dropper distilled water NaCl solution paper towels microscope slide cover slip Procedure 1. Make a wet mount of the red onion epidermis. 2. Examine under low power. When you have a clear view of several cells‚ switch to high power. Make a labeled drawing (cell wall‚ membrane‚ cytosol) of your cells. This will give you a record of the original appearance of the onion cells.
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Animal and plant cells are very similar in the way that they create energy to perform their duties. The chemical equations are very similar for cellular respiration and photosynthesis are almost exact opposites. Photosynthesis is anabolic; it builds up glucose‚ or sugar‚ from light energy‚ water and carbon dioxide. The chemical equation for photosynthesis is: 6CO2 + 6H2O + Light Energy C6H12O6 + 6O2. Cellular respiration‚ on the other hand‚ is catabolic. It breaks down glucose to form carbon dioxide
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