MetabolismLAB

MetabolismLAB - Names: Layla, Saina, Sahar, Lorena Bio 3A-...

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Names: Layla, Saina, Sahar, Lorena Bio 3A- Morning Lab Laboratory: Animal Metabolism 1. What effect would you expect size to have on the opercular pumping rate? (Explain) Because we are keeping the volume of water constant, the rate of the opercular pumping rate is proportional to the oxygen demand of the fish. Larger animals consume more oxygen and therefore have higher opercular pumping rates. The larger the fish the smaller the ratio of surface area to mass. This is due to the mathematical relation between surface area (a 2 ) to volume (a 3 ). But, if metabolic data is expressed as rate of mL O 2 consumed per gram per hour (mL O 2 /g/hr) the opposite trend is found. Smaller animals consume more oxygen per gram of body weight than larger animals do. Table 1 . Number of opercular contractions in 120 seconds at three different temperatures. Low Room High Measurement # Temp. ~10˚C Temp. ~20˚C Temp. ~30˚C 1 15 30 39 2 19 33 48 3 14 34 70 Mean 16 32.3 52.3 2. Using Excel, create a bar graph of average opercular pumping rate vs. ambient temperature for your data. Group the data as low, room and high temperature. Figure 1.
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MetabolismLAB - Names: Layla, Saina, Sahar, Lorena Bio 3A-...

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