laboratory questions_001 - 1988:LABORATORY#2ENZYMECATALYSIS...

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ESSAY QUESTIONS KEYED TO THE AP BIOLOGY LABS  1988:  LABORATORY #2 ENZYME CATALYSIS 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 formed (mg) 0.00 0.25 0.50 0.70 0.80 0.85 0.85 Draw a graph of these data and answer the following questions. a. What is the initial rate of this enzymatic reaction? b. What is the rate after 50 seconds? Why is it different from the     initial rate? c. What would be the effect on product formation if the enzyme were     heated to a temperature of 100  o C for 10 minutes before repeating     the experiment? Why? d. How might altering the substrate concentration affect the rate of     the reaction? Why? e. How might altering the pH affect the rate of reaction? Why? 1989:  LABORATORY #8 POPULATION GENETICS AND EVOLUTION Do the following with reference to the Hardy-Weinberg model. a.  Indicate the conditions under which allele frequencies (p and Q) remain       constant   from one generation to the next. b.  Calculate, showing all work, the frequencies of the alleles and frequencies       of the genotypes in a population of 100,000 rabbits of which 25,000 are       white and 75,000 are agouti. (In rabbits the white color is due to a recessive       allele, w, and agouti is due to a dominant allele, W.)  c.  If the homozygous dominant condition were to become lethal, what would       happen to the allelic and genotypic frequencies in the rabbit population after       two generations?
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