Principles Of Biology 1 (Module 3 Energy Drinks)

1. Which of the following is a passive mechanism used to move materials into and out of of the cell? A. Facilitated diffusion. B. Exocytosis. C. Active transport. D. Feedback inhibition. E. Phagocytosis.

Answer: A (Facilitated diffusion)

8. Which of the following statements is true? A. The end product of glycolysis is pyruvate. B. Cellular respiration will eventually produce three ATP molecules. C. Aerobic respiration of glucose has five phases. D. Aerobic respiration releases oxygen and uses carbon dioxide.

Answer: A (The end product of glycolysis is pyruvate)

2. Which of the following is the correct sequence of events in cellular respiration? A. glycolysis → preparatory reaction → citric acid cycle → electron transport chain. B. citric acid cycle → electron transport → glycolysis → preparatory reaction. C. glycolysis → citric acid cycle → electron transport chain. D. citric acid cycle → glycolysis → electron transport chain → preparatory reaction. E. glycolysis → electron transport chain → preparatory reaction.

Answer: A (glycolysis → preparatory reaction → citric acid cycle → electron transport chain)

5. A student sitting in the back row opened a bottle of foul-smelling perfume and dabbed it on her wrists. One by one (beginning from the back of the room) the students began to cough due to the foul smell. This phenomena was due to. A. Osmosis. B. Diffusion. C. Molecules moving from an area of low concentration to high concentration. D. An allergic reaction. E. Active transport.

Answer: B (Diffusion)

7. Which process is responsible for moving bulk cellular wastes across the cell membrane? A. Endocytosis. B. Exocytosis. C. Pinocytosis. D. Diffusion. E. Osmosis.

Answer: B (Exocytosis)

10. Which of the following provides support for the endosymbiotic theory? A. Mitochondria and chloroplasts have only a single membrane surrounding them. B. Mitochondria and chloroplasts have their own genomes. C. Mitochondria and chloroplasts cannot synthesize proteins. D. Mitochondria and chloroplasts contain genes that are vastly different compared to bacterial genes. E. Mitochondria and chloroplasts contribute to similar metabolic processes in the eukaryotic cell.

Answer: B (Mitochondria and chloroplasts have their own genomes)

4. Which of the following statements best describe the way molecules move across a plasma membrane? A. Water and gas molecules require "helper" proteins to move through the plasma membrane. B. Small, uncharged molecules pass through the plasma membrane easily. C. Large molecules pass through the plasma membrane easily. D. Charged molecules pass through the plasma membrane easily. E. Lipid molecules do not pass through the plasma membrane easily.

Answer: B (Small, uncharged molecules pass through the plasma membrane easily)

9. Cellular respiration involves all of the following except. A. The breakdown of molecules. B. The release of energy. C. The synthesis of ATP. D. Breathing in and out. E. The release of carbon dioxide.

Answer: D (Breathing in and out)

6. The largest number of ATP molecules is produced in which phase of cellular respiration? A. Glycolysis. B. Preparation reaction. C. Citric acid cycle. D. Electron transport chain. E. Calvin cycle.

Answer: D (Electron transport chain)

3. What property of phospholipids makes them suitable for the formation of the double layer found in membranes? A. They are uncharged. B. They can interact with proteins. C. They are composed of fatty acids. D. They have both a hydrophobic and hydrophilic end. E. They serve as an attachment site for carbohydrates.

Answer: D (They have both a hydrophobic and hydrophilic end)