LIGHT SETUP Describe the initial color of … Demonstrating Aerobic Cellular Respiration with Germinating Seeds. Experimental Project: Cellular Respiration Purpose Background Information Independant: resting vs. jumping jacks Dependant: heart rate (pulse), breathing rate, and time for bromothymol blue solution to change colour Control: same amount of BTB solution, students of same age, The bromothymol we used changes color when a … How are cellular respiration and photosynthesis alike? (10 points) In a short paragraph (5–7 sentences), explain the evidence you have to prove that cellular respiration occurred in the beans. The pH indicator bromothymol blue is used to estimate the amount of CO 2 present in the vials. The purpose of this lab is to determine the effects of elodea on CO 2 levels and to observe evidence of cellular respiration and photosynthesis. Exercise and Cellular Respiration Lab ... and carbon dioxide in the time it takes bromothymol blue to change color. Have students observe the respiration of germinating seeds, using bromthymol blue as a pH indicator. Label four test tubes: "control," "3 cm elodea" and "7 cm elodea." Bromothymol Blue (and indicator that changes from blue to yellow in the presence of carbonic acid) was used, Carbonic acid will be formed when high levels of Carbon Dioxide combine with water. he following tests were set up; #1- 50 Ml of distilled water and 3 … Bromothymol blue works because it is able to detect the presence of . blue and CO 2. PRE-LAB QUESTIONS. When carbon dioxide enters water it makes the water more acidic. The pictures below show the setup for an investigation during which bromthymol blue was added to all the test tubes. CO2 is consumed during photosynthesis 2. Use your background information AND your Cellular Respiration notes to answer the following 1. and "7 cm dark". Bromothymol Blue (which acts as an indicator to show if photosynthesis is occurring). Part 1: Elodea and Bromothymol Blue: 1. VIRTUAL LAB Carbon Transfer through Snails and Elodea Bromothymol blue (BTB) is an indicator that turns yellow in the presence of carbon dioxide. When CO ... Answer … bromothymol blue + O2 = blue color ©2008 CIBT Photosynthesis and Respiration in Elodea – Teacher Section Page 2 Teacher Information Objectives: Through the investigation of the involvement of CO2 in the processes of photosynthesis and respiration in an aquatic plant, this lab is designed to demonstrate the following: 1. Some Important Background for Lab: Bromothymol Blue Indicator Reaction to Measure CO. 2. Why is cellular respiration necessary for living organisms? An experiment was designed by Biology student to demonstrate the link between photosynthesis and cellular respiration. How are they different? Next, they observe the carbon dioxide gas produced by yeast fermentation. of cellular respiration? First, students observe respiration in germinating seeds by detecting the carbon dioxide produced. 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