Lehninger Principles of Biochemistry Ch 1-6 with comprehensive
Questions and Answers
Which of the following are characteristics of living systems?
A. High degree of complexity and organization
B. Extraction, transformation, and systematic use of energy to create and maintain structures and
to do work
C. Interactions of individual components are dynamic and coordinated
D. A capacity for fairly precise self-replication while allowing enough change for evolution
E. All of the above✔️✔️E. All of the above
Which of the following structures are components of all living cells?
A. Ribosomes
B. Nuclear membrane
C. Plasma membrane
D. Cytoplasm
E. 1, 3 and 4✔️✔️E. 1, 3 and 4
Amino acids are the basic building blocks of proteins and nucleosides are the monomeric units of
nucleic acids. Do you agree?
A. Yes
B. N✔️✔️A. yes
Which of the following combination of elements make up more than 99% of the mass of most
cells?
A. H, N, O, P
B. H, N, O, C
, C. H, C, N, P
D. C, N, O, P✔️✔️B. H, N, O, C
Which of the following is a reflection of the total energy change in a chemical reaction, a
measure of the number and kinds of bonds that are made and broken?
A. ΔG
B. ΔH
C. ΔS
D. ΔE
E. ΔT✔️✔️B. ΔH
Which is the proper definition of equilibrium, with respect to a biochemical reaction?
A. The forward reaction is favored over the reverse reaction, and it proceeds.
B. There is no net change in reactant and product concentrations.
C. There is a constant rate at which reactant is converted to product.
D. The free-energy change for the reaction is negative. E. The entropy of the reaction is negative
and the enthalpy of the reaction is positive.✔️✔️
For the reaction below A + B <-> C If you add a catalyst to this reaction you will have more C at
equilibrium True or False?✔️✔️False
Which of the following is a reflection of the total energy change in a chemical reaction, a
measure of the number and kinds of bonds that are made and broken?
A. ΔG
B. ΔH
C. ΔS
D. ΔE
Questions and Answers
Which of the following are characteristics of living systems?
A. High degree of complexity and organization
B. Extraction, transformation, and systematic use of energy to create and maintain structures and
to do work
C. Interactions of individual components are dynamic and coordinated
D. A capacity for fairly precise self-replication while allowing enough change for evolution
E. All of the above✔️✔️E. All of the above
Which of the following structures are components of all living cells?
A. Ribosomes
B. Nuclear membrane
C. Plasma membrane
D. Cytoplasm
E. 1, 3 and 4✔️✔️E. 1, 3 and 4
Amino acids are the basic building blocks of proteins and nucleosides are the monomeric units of
nucleic acids. Do you agree?
A. Yes
B. N✔️✔️A. yes
Which of the following combination of elements make up more than 99% of the mass of most
cells?
A. H, N, O, P
B. H, N, O, C
, C. H, C, N, P
D. C, N, O, P✔️✔️B. H, N, O, C
Which of the following is a reflection of the total energy change in a chemical reaction, a
measure of the number and kinds of bonds that are made and broken?
A. ΔG
B. ΔH
C. ΔS
D. ΔE
E. ΔT✔️✔️B. ΔH
Which is the proper definition of equilibrium, with respect to a biochemical reaction?
A. The forward reaction is favored over the reverse reaction, and it proceeds.
B. There is no net change in reactant and product concentrations.
C. There is a constant rate at which reactant is converted to product.
D. The free-energy change for the reaction is negative. E. The entropy of the reaction is negative
and the enthalpy of the reaction is positive.✔️✔️
For the reaction below A + B <-> C If you add a catalyst to this reaction you will have more C at
equilibrium True or False?✔️✔️False
Which of the following is a reflection of the total energy change in a chemical reaction, a
measure of the number and kinds of bonds that are made and broken?
A. ΔG
B. ΔH
C. ΔS
D. ΔE
