ch01 - Chapter 1: Introduction to the Chemistry of Life...

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Chapter 1: Introduction to the Chemistry of Life Matching A) Phylogenetic B) q/T C) Carbon D) H ° E) H – TS F) halobacteria G) equilibrium H) entropy I) flux J) polymers K) G ° ′[ note: prime remains but apostrophe removed] L) thermophiles M) Nitrogen 1. The most abundant chemical element in the human body is _____. Ans: C Level of Difficulty: Easy Section: 1.1.A Learning objective: The Origin of Life 2. During chemical evolution, small organic molecules condense to form more complex molecules called ______. Ans: J Level of Difficulty: Easy Section: 1.1.B Learning objective: The Origin of Life 3. Evolutionary relationships can be compared using a ______ tree. Ans: A Level of Difficulty: Easy Section: 1.2.C Learning objective: Cellular Architecture
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4. The organisms most likely to be found in a brine solution would be ______. Ans: F Level of Difficulty: Easy Section: 1.2.C Learning objective: Cellular Architecture 5. The organisms most likely to be found in high temperature environments would be ______. Ans: L Level of Difficulty: Easy Section: 1.2.C Learning objective: Cellular Architecture 6. The term used to indicate the degree of randomness within a system is ______. Ans: H Level of Difficulty: Easy Section: 1.3.B Learning objective: Thermodynamics 7. For spontaneous processes within biological systems at constant temperature, S > ______. Ans: B Level of Difficulty: Easy Section: 1.3.B Learning objective: Thermodynamics 8. Gibbs free energy is defined as G = ______. Ans: E Level of Difficulty: Easy Section: 1.3.C Learning objective: Thermodynamics 9. The symbol for free energy under standard biochemical conditions is ______. Ans: K Level of Difficulty: Easy
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1.3.C Learning objective: Thermodynamics 10. Open systems, such as living creatures, are not at ______. Ans: G Level of Difficulty: Easy Section: 1.3.E Learning objective: Thermodynamics Multiple Choice 11. The atmosphere of early earth probably contained the following molecules: A) H 2 O, CO 2 , N 2 , CH 4 , and NH 3 . B) H 2 O, CO 2 , CH 4 , C 6 H 6 O 6 , and NH 3 . C) H 2 O, CO 2 , CH 4 , C 6 H 6 O 6 , and COOHCH 2 NH 3 . D) H 2 O, CO 2 , CH 4 , COOHCH 2 NH 3 , and NH 3 . E) none of the above Ans: A Level of Difficulty: Moderate Section: 1.1.A Learning objective: The Origin of Life 12. Which of the following statements about hydrothermal vents is true? A) The vents have temperatures as high as 800°C, and emit H 2 S and nitrogen sulfides. B) The vents have temperatures as high as 600°C, and emit H 2 S and metal nitrates. C) The vents have temperatures as high as 400°C, and emit H 2 S and metal sulfides. D) none of the above E) all of the above Ans: C Level of Difficulty: Easy Section: 1.1.A Learning objective: The Origin of Life 13. Compartmentation offers several advantages, including: A) the elimination of any exchange between the inside of the enclosed system and the external environment. B)
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This note was uploaded on 03/16/2010 for the course BIOCHEM Biochemist taught by Professor Kw during the Spring '10 term at Wichita State.

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ch01 - Chapter 1: Introduction to the Chemistry of Life...

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