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FRQ: Genetically modified crops have been developed that produce a protein that makes the plants resistant to insect pests. Other genetic modifications make the crops more resistant to chemicals that kill plants (herbicides).
a) Describe TWO potential biological risks of large-scale cultivation and use of such genetically modified plants. b) For each of the risks you described in part a, propose a practical approach for reducing the risk. |
ap_photosynthesis_lab_analysis_and_conclusion.pdf | |
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macromolecule_table.pdf | |
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Week 3 FRQ: After an enzyme is mixed with its substrate, the amount of product formed is determined at 10-second intervals for 1 minute. Data from this experiment are shown below:
Time (sec) 0 10 20 30 40 50 60 Product 0.00 0.25 0.50 0.70 0.80 0.85 0.85 Formed (mg) Draw a graph of these data and answer the following questions. (What type of graph do you create when dealing with time as a variable?) 1. What is the initial rate of this enzymatic reaction? 2. What is the rate after 50 seconds? Why is it different from the initial rate? 3. What would be the effect on product formation if the enzyme were heated to a temperature of 100° C for 10 minutes before repeating the experiment? Why? 4. How might altering the substrate concentration affect the rate of the reaction? Why? 5. How might altering the pH affect the rate of the reaction? Why? |
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Week 2 FRQ:: Water is essential to all living things.
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