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Fundamentals of Biochemistry Life at the Molecular Level 4th edition by Voet
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Fundamentals of Biochemistry Life at the Molecular Level 4th edition by Voet
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, Chapter 1: Introduction to the Chemistry of LifeMatching
A) phylogenetic
B) negative
C) H2O
D) H°
E) H – TS
F) halobacteria
G) open
H) entropy
I) flux
J) polymers
K) G°
L) thermophiles
M) nitrogen
N 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
1
,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
2
, 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
3
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