... Like all enzyme-driven reactions the rate of photosynthesis can be measured by either. Fill in the table below with the results from your first experiment. Photosynthesis SHORT ANSWER Experiment 1: Measuring the Rate of Photosynthesis Lab Results 1. A plant is shown in a beaker and test tube which bubbles to indicate the rate of photosynthesis. What Was The Name Of The Plant You Used To Study Photosynthesis? As photosynthesis proceeds oxygen is released into the interior of the leaf which changes the buoyancy--causing the disks to rise. Purpose: The purpose of this investigation is to measure the rate of photosynthesis in spinach leaves by measuring the length of time it takes for leaf discs to generate enough oxygen to float. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Background Information: Chloroplasts are located in the cells in the center of a leaf, called the mesophyll, or “middle tissue”. the rate of photosynthesis minus the rate of cellular respiration). “The hypothesis was…” a. Present your results in a graph. b. Calculate the change in volume by subtracting the later gas volume from the earlier gas volume. El Odea Branch 2. Answer the lab question – What factors affect the rate of photosynthesis in plants? Print and Web Resources: ! 4. ... What is an indirect measurement of the net rate of photosynthesis occurring in the leaf tissue? “The data show …” a. Lab 8: Determining the Rate of Photosynthesis in a Leaf. Be sure to clearly indicate the x and y axes, the units used, and the graph title(s). The FLDA actually measures the rate of photosynthetic oxygen production minus the rate of respiratory oxygen use during the same period. Start studying Photosynthesis lab. Floating C3 Spinach Discs Lab Concerning Photosynthesis that Determined how Light Intensity Affects the Net Rate of Photosynthesis By Senegar & Mitchell and written by Sandra Monreal Abstract Researchers realize that spinach discs float normally so when infiltrating these discs Calculate the change in volume for each measurement time. Experiment 1: Measuring the Rate of Photosynthesis For the first experiment, what was the change in volume from 00:01:30 to 00:02:00? Write a detailed conclusion based on your results. Experiment 3: Measuring the Rate of Photosynthesis with Floating Leaf Discs. Include a brief statement describing why you selected the graphing method you did. Measuring the Rate of Photosynthesis; In this section, students learn how to use the floating leaf disk method to measure the rate of net photosynthesis (i.e. In Volume For 5 Minutes Is 0.4 ML For Example, If The Volume At 5 Minutes Is 4 ML. 3. Question: Photosynthesis SHORT ANSWER Experiment 1: Measuring The Rate Of Photosynthesis Lab Results 1. elodea 2. Post-Lab Questions. Students can measure the rate over time. The Compare experimental results to control groups! One problem in measuring a rate of photosynthesis is that there is a competing process occurring at the same time, cellular respiration, a process that uses oxygen. Photosynthesis I: An Assay Utilizing Leaf Disks. 1985. In this virtual photosynthesis lab, students can manipulate the light intensity, light color, and distance from the light source. Did the rate of photosynthesis increase or decrease due to the independent variable? The rate that the disks sink is an indirect measure of the rate of cellular respiration. They compare the rate of net photosynthesis in water vs. a … Can you think of a way to how you might measure the gross rate of photosynthesis with this technique? Fill In The Table Below With The Results From Your First Experiment. 5. 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