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Scie 207 Lab 1 Worksheet

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Submitted By kmobley
Words 450
Pages 2
Table 1: Rate of Photosynthesis Measured by the Number of Oxygen Bubbles

|Light Bulb |Trial 1 |Trial 2 |Trial 3 |Average |
|0 watts |2 |1 |3 |2 |
|25 watts |7 |4 |4 |5 |
|50 watts |11 |11 |11 |11 |
|100 watts |12 |13 |12 |12 |

Purpose
The purpose of this lab was to investigate the relationship of light intensity and the rate of photosynthesis. Introduction
This lab was conducted to examine the two biological processes of photosynthesis and cellular respiration. Photosynthesis is a process that uses carbon dioxide, water and energy to produce glucose and oxygen. Cellular Respiration is the reverse process of photosynthesis. Cellular Respiration uses the glucose and oxygen to produce carbon dioxide, water and energy. These become the main source of food and energy for the plants and animals. The basis of the relationship between plants and animals is that they have a co-dependency upon each other because they are both making something the other needs. Hypothesis or Predicted Outcome
I hypothesize that the production of gas will continue to increase as the light intensity amount increases. Methods
Under controlled experiential conditions we observed to see what changes occur in nature as the light source intensity is increased during the in cellular respiration process (Gnaigner, Steinlechner-Maran, Mendez & Margreiter, 1995). Ocean water was placed in a glass bowl, rocks and a seaweed...

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