17. You are conducting an experiment to determine which type…

17. You are conducting an experiment to determine which type of carbohydrate provides the best  growing conditions for bacteria. You set up 5 growth plates of bacteria. 4 plates each have a different type of sugar, while the 5th plate has no sugar. What is the purpose of the 5th plate in this  experiment? A) It is the independent variable plate B) This plate will grow the most bacteria because of the lack of sugar C) This plate serves as a control plate to compare growth with the sugar plates D) This plate should not grow any bacteria due to lack of sugar

31. You are conducting an experiment to determine the effect…

31. You are conducting an experiment to determine the effect of varying levels of caffeine on high school swimmers. You will be varying the amounts of caffeine consumed by each swimmer 1 hour before swimming a 200 meter race. You have already recorded times for each swimmer at a normal practice, without the use of caffeine supplements for comparison to your results.               Use the information provided to correctly match the variables for this experiment.