Yeast Respiration Lab.docx - Yeast Respiration Lab Purpose To observe evidence of aerobic and anaerobic respiration in yeast Hypothesis The hypothesis

Yeast Respiration Lab.docx - Yeast Respiration Lab Purpose...

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Yeast Respiration Lab Purpose: To observe evidence of aerobic and anaerobic respiration in yeast. Hypothesis: The hypothesis for the respiration of yeast experiment was that glucose is the main respiratory substrate used by yeast. The smaller and simpler the organic compound, the easier it is to decompose. Also, glucose is the main respiratory substrate for many cells (Kaliterna et al. 1995). The respiration rate of different sugars was measured and recorded. They can now be compared to reveal which sugar is the preferred respiratory substrate. Due to specific enzymes in yeast, it will be able to break down different sugars at different efficiencies. Objective: My groups’ objective was to see how much the balloon would inflate depending on the amount of water, yeast, and/or sugar. Materials: -50 mL - Teaspoon - Yeast - Sugar packets - Apple cider - Vinegar - Balloons
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Unformatted text preview: - Graduated cylinder Variables: Independent Variable Amount of water, amount of yeast, type of yeast,type of sugar, type of apple cider, balloon sizes Dependent Variable Balloon inflation, what goes in each cylinder Controlled Group The cylinder with just water Analysis: Observation Table Graph: Conclusion: While doing this experiment we came to find the strengths of this experiments as well as its weaknesses. On strength included the actual result of our experiment. Due to our consistent book keeping our balloon did inflate very well. One error included being able to weigh the sugar and yeast properly. In order to get a consistent amount we needed to weigh out the sugar and yeast and we had a little trouble with that process. Overall, my group’s experiment was a success and we don’t think this method or procedure has any limitations....
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