Standardized Test Prep

Multiple Choice

1. What raw materials are needed for cellular respiration?

   1. glucose and carbon dioxide

   2. glucose and oxygen

   3. carbon dioxide and oxygen

   4. oxygen and lactic acid

2. During the Krebs cycle

   1. hydrogen ions and oxygen form water.

   2. the cell releases a small amount of energy through fermentation.

   3. each glucose molecule is broken down into 2 molecules of pyruvic acid.

   4. pyruvic acid is broken down into carbon dioxide in a series of reactions.

3. Which substance is needed to begin the process of glycolysis?

   1. ATP

   2. NADP

   3. pyruvic acid

   4. carbon dioxide

4. In eukaryotic cells, MOST of cellular respiration takes place in the

   1. nuclei.

   2. cytoplasm.

   3. mitochondria.

   4. cell walls.

5. Which substance is broken down during the process of glycolysis?

   1. carbon

   2. NAD⁺

   3. glucose

   4. pyruvic acid

6. The human body can use all of the following as energy sources EXCEPT

   1. ATP in muscles.

   2. glycolysis.

   3. lactic acid fermentation.

   4. alcoholic fermentation.

7. During cellular respiration, which of the following are released as byproducts?

   1. CO₂ and O₂

   2. H₂O and O₂

   3. O₂ and H₂O

   4. CO₂ and H₂O

8. Which of the following is an aerobic process?

   1. the Krebs cycle

   2. glycolysis

   3. alcoholic fermentation

   4. lactic acid fermentation

Questions 9 and 10

The graph below shows the rate of alcoholic fermentation for yeast at different temperatures.

d

9. According to the graph, what is the relationship between the rate of fermentation and temperature?

   1. The rate of fermentation continually increases as temperature increases.

   2. The rate of fermentation continually decreases as temperature increases.

   3. The rate of fermentation increases with temperature at first, and then it rapidly decreases.

   4. The rate of fermentation decreases with temperature at first, and then it rapidly increases.

10. Which statement could explain the data shown in the graph?

    1. The molecules that regulate fermentation perform optimally at temperatures above 30˚C.

    2. The yeast begins releasing carbon dioxide at 30˚C.

    3. The yeast cannot survive above 30˚C.

    4. The molecules that regulate fermentation perform optimally at temperatures below 10˚C.

Open-Ended Response

11. Explain how a sprinter gets energy during a 30-second race. Is the process aerobic or anaerobic? How does it compare to a long-distance runner getting energy during a 5-kilometer race?

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