The Chemical Basis of Life Study Guide

A m atch these terms with the carbon dioxide co2

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Unformatted text preview: in carbon.❜❜ A. M atch these terms with the Carbon dioxide (CO2) Oxygen (O2) correct statement or definition: 1 . Comprises about 21% of the gas in the atmosphere; required for the final step of extracting energy from food molecules. 2 . Produced when organic molecules such as glucose are metabolized in the cells of the body; toxic if it is allowed to accumulate within cells. 5 B . Using the terms provided, complete these statements: Digestion Dissociate Heat Lubricant React Transport 1. 2. 3. Water has many important properties for living organisms. Water can absorb large amounts of (1) and remain at a stable temperature. Water also acts as an effective (2) ; for example, tears protect the surface of the eye. Water is necessary in many chemical reactions, such as the (3) of food. Water is necessary for (4) of nutrients, gases, and waste products in the body. When ionic substances dissolve in water, the positive and negative ions separate, or (5) , allowing the ions to stay in solution and (6) with other mol...
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