BIOL 103 Quiz 1, 2, 3

BIOL 103 Quiz 1, 2, 3

Quiz 1

1. A factor that is intentionally changed by the experimenter is called the
2. Which of the following statements is true
3. When running an experiment, which variables represent the unknowns we are trying to measure?
4. Which is a dependent variable in these experiments?
5. What is the ideal number of variables for the experimenter to alter at one time?
6. Which of the following is a hypothesis studied in the first activity?
7. According to the instructions, the temperature of the water in your second experiment can not be
8. Which of the following statements about glove use is true?
9. Which variable was not a controlled variable in the first activity?
10. If the data matches our predictions, then we say our hypothesis is

Quiz 2

1. Why was one of the biuret reagent tests a different color from the rest?
2. What color does the biuret reagent turn to in the presence of proteins?
3. Pancreatin, a fluid secreted by the pancreas into the duodenum (the first region of the small intestine) contains three enzymes called
4. Which action is not affected by the release of hydrochloric acid into the stomach?
5. Why was one of the iodine potassium iodide tests lighter in color than the others?
6. What is the reaction catalyzed by the enzyme pepsin?
7. The specific shape enzymes have at their active site allows them to specifically bind to molecule(s) most generally know as
8. What color does the iodine-potassium iodide solution change to in the presence of starch?
9. The enzyme in saliva that breaks down starch into its component sugars is known as
10. Proteins that act as catalysts to speed up chemical reactions by lowering the activation energy required for the reaction are known as

Quiz 3

1. Energy for seed germination arises from
2. The respirometer containing beads
3. In cellular respiration, glucose and oxygen are used to generate
4. Which of the following, by itself, generates the greatest number of ATPs?
5. The respirometer showing the greatest amount of change during the incubation period was the one containing
6. KOH
7. The main form of energy used in cells is
8. In this experiment, oxygen consumption was measured by a change in
9. Which of the following is not a component part of aerobic cellular respiration?
10. Parafilm helps to