Biology: Concepts and Connections, 5e (Campbell) Chapter 5: The Working Cell 1) Many of the enzymes that control a firefly's ability to produce light energy from chemical energy are located A) in membranes. B) in the nucleus. C) within chloroplasts. D) outside of cells. E) within mitochondria. Answer: A Topic: Introduction Skill: Factual Recall 2) Kinetic energy differs from chemical energy in that A) kinetic energy is stored energy that has the potential to do work, and chemical energy is the energy of movement. B) kinetic energy depends on the movement of atoms, whereas chemical energy depends on the movement of molecules. C) kinetic energy can be converted into various forms of energy, whereas chemical energy can only be converted into heat. D) kinetic energy is the energy of a moving object, whereas chemical energy is the potential energy of molecules. E) chemical energy is a particular form of kinetic energy. Answer: D Topic: 5.1 Skill: Factual Recall 3) Glucose molecules provide energy to power the swimming motion of sperm. In this example, the sperm are changing A) chemical energy into kinetic energy. B) chemical energy into potential energy. C) kinetic energy into potential energy. D) kinetic energy into chemical energy. E) None of the choices are correct. Answer: A Topic: 5.1 Skill: Application 4) Which one of the following is false ? A) Thermodynamics is the study of energy transformations that occur in a collection of matter. B) The collection of matter under study is called the system. C) A single cell or the planet Earth could be a thermodynamic system. D) An open system exchanges both energy and matter with its surroundings. E) An automobile engine is an example of a closed system. Answer: E Topic: 5.2 Skill: Factual Recall
5) According to __________, energy cannot be created or destroyed. A) Aristotle's first principle B) the first law of thermodynamics C) the second law of thermodynamics D) the third law of thermodynamics E) Einstein's law of relativity Answer: B Topic: 5.2 Skill: Factual Recall 6) A steer must eat at least 100 pounds of grain to gain less than 10 pounds of muscle tissue. This illustrates A) the first law of thermodynamics. B) the second law of thermodynamics. C) that some energy is destroyed in every energy conversion. D) that energy transformations are typically 100% efficient. E) None of the choices are correct. Answer: B Topic: 5.2 Skill: Application 7) Which of the following energy transfers is/are possible in living systems? A) light energy to chemical energy B) chemical energy to kinetic energy C) potential energy to kinetic energy D) light energy to potential energy E) All of the choices are correct. Answer: E Topic: 5.2 Skill: Conceptual Understanding 8) Living systems A) violate the first law of thermodynamics. B) violate the second law of thermodynamics.
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