1. Andrew is studying harmful algae blooms in Lake Erie. One algal species in pa
ID: 212104 • Letter: 1
Question
1. Andrew is studying harmful algae blooms in Lake Erie. One algal species in particular, Anabaena, seems to be in relative ly high abundance. He hypothesizes that this is due to Anabaena's unique ability to cre ate energy by converting atmospheric Nz into N using the enzyme Nitrogenase. To better understand the properties of this enzyme, he decides to test the effect of pH on the activity of Nitrogenase by placing Anabaena in beakers with different pH levels, spiking each beaker with V and measuring the concentration of NHa afte an incubation time of 1 hour. The results of the conclude about pH's effect on Nitrogenase a:tivity? What are the dependent and independent variables of this experiment? (2 pts.) 46810 pH 2. In the winter deciduous trees lose all of th eir leaves and thus do not undergo photosynthe sis. How is it possible that these trees can survive the winter? What organelle(s) is/are responsible for keeping the trees alive throughout winter? (1.5 pts) 3. While trying to save Princess Zelda in the Kingdom of Hyrule, a young warrior named Link finds himself becoming unbearaibly tired. After going to the hospital (also known as the Fairy Fountain), the doctor inforins Link that his cells have the following conditions: Elevated ADP Low ATP Elevated NAD ow NADH Weak proton gradient in the electron snaasport chain Elevated Pyruv LuExplanation / Answer
The enzyme has an optimal pH range where its activity is the highest and works more efficiently to convert more N2 into Nh3. This optimal pH is 8 and the range is 6-9. At pH below and above this range, the activity of the enzyme reduces. The enzyme's activity is dependent variable here.
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