The Exchange of Energy Between an Organism and Its Surroundings

question 79

Multiple Choice

The exchange of energy between an organism and its surroundings involves the transformation of one form of energy into another. For example, when a leaf produces sugar, it converts solar energy to chemical energy in sugar molecules. When an animal's muscle cells use sugar as fuel to power movements, they convert chemical energy into kinetic energy. All of the work of cells involves the transformation of chemical energy (which is ordered) into heat, which is the unordered energy of random molecular motion. Neil A. Campbell and Jane B. Reece, Biology, 6^th edition

• A) Argument; conclusion: When an animal's muscle cells ... into kinetic energy.
• B) Argument; conclusion: The exchange of energy ... form of energy into another.
• C) Argument; conclusion: When a leaf produces sugar ... in sugar molecules.
• D) Argument; conclusion: All of the work of cells ... random molecular motion.
• E) Nonargument.

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