Rate Of Respiration In Yeast

The hypothesis in the beginning of this experiment was that various carbohydrates have different rates of respiration by a yeast culture raised on glucose. The differences in time for respiration to peak for the other sugars were due to enzyme regulation called induction. This is the time required for the glucose fed yeast culture to alter its enzymatic machinery to process sugars other than glucose for oxidative respiration. The different rates of respiration for each sugar was measured by the rate of carbon dioxide (CO2) produced. Figure 1 supports the above hypothesis by the change in CO2 increasing at various rates with the different carbohydrates. Water was used as the control and it did not yield CO2 as suspected. An interesting finding …show more content…
Lactose had 1.7 mL of CO2 at 30 minutes and remained constant not gaining any CO2 at 40 minutes resulting in 1.7 mL of CO2. In the second experiment my hypothesis stated the rate of photosynthesis is dependent on the wavelength (color) of light absorbed. The rate of photosynthesis can be measured by the amount of oxygen produced from various wavelengths of light in the color spectrum. The graph generated using various wave lengths in the visible light spectrum supports the hypothesis by demonstrating the variation between wavelength and the change in the amount of O2 yielded. The green and red light were found to be the most effective for photosynthesis by producing the most 02. The control for the study was a clear tube which allowed for the substrate to be exposed to all the wavelengths of the color spectrum simultaneousle. As suspected the unfiltered clear light was found to be very effective for photosynthesis. Furthermore, there were two peak levels of 02 production found including the Green and Red wavelengths which were due to the two different forms of chlorophyll (A) and …show more content…
Obesity has become a growing problem in our society, especially with the increasing sedentary lifestyle of our youths. This is due primarily to the electronic/ digital age. Diabetes, heart disease, and hypertension are the primary resultant diseases from obesity. These topics are very important to me and my career as I aspire to become a future primary care physician. Understanding how nutrients and energy is generated and processed at the cellular and molecular levels in the body is key for me in understanding how to treat obesity and chose the best and safest medications for my patients. Education on the cause and prevention of obesity is our best approach on treating this life threatening problem in our society. Promoting exercise as a daily activity, and emphasizing nutrition through out our children’s education should help alleviate this problem and save millions of dollars consumed in treating the long term complications of obesity. Most importantly it will improve the quality of