Type:
Test Bank
Resource:
Fundamentals of Biochemistry Life at the Molecular Level
Edition:
4th Edition
Author(s):
Donald Voet Judith G. Voet Charlotte W. Pratt
Chapter 1: Introduction to the Chemistry of Life
Matching A) B) C) D) E) F) G) H) I) J) K) L) M) N
phylogenetic negative H2O H° H – TS halobacteria open entropy flux polymers G° thermophiles nitrogen positive
1. The most abundant molecule 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 visualized 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 environment 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. Spontaneous processes are characterized by a change in Gibbs free energy that is ______. 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 Section: 1.3.C Learning objective: Thermodynamics
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10. Living creatures can be described thermodynamically as ______ systems. Ans: G Level of Difficulty: Easy Section: 1.3.E Learning objective: Thermodynamics
Multiple Choice 11. What are the four most abundant elements in a human body? A) C, N, O, H B) C, N, O, P C) C, S, O, H D) C, Na, O, H E) none of the above Ans: A Level of Difficulty: Moderate Section: 1.1.A Learning objective: The Origin of Life
12. The atmosphere of prebiotic earth probably contained the following molecules: A) H2O, CO2, N2 , CH4, and NH3. B) H2O, CO2, CH4, C6H12O6, and NH3. C) H2O, CO2, CH4, C6H12O6, and COO-CH2NH+3. D) H2O, CO2, CH4, COOHCH2NH3, and NH3. E) none of the above Ans: A Level of Difficulty: Easy Section: 1.1.A Learning objective: The Origin of Life
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13. In 1953, Urey and Miller carried out an experiment in which they subjected a mixture of H2O, CH4, NH3, and H2 to electrical discharges. Which of the following were among the products? A) proteins B) amino acids C) nucleic acids D) ribosomes E) all of the above Ans: B Level of Difficulty: Easy Section: 1.1.A Learning objective: The Origin of Life
14. Which of the following statements about hydrothermal vents is true? A) The vents have temperatures as high as 800°C and emit H2S and metal sulfides. B) The vents have temperatures as high as 600°C and emit H2S and metal nitrates. C) The vents have temperatures as high as 400°C and emit H2S and metal sulfides. D) none of the above E) all of the above Ans: C Level of Difficulty: Moderate Section: 1.1.A Learning objective: The Origin of Life
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