PRINCIPLES OF BIOCHEMISTRY 2026
CERTIFICATION EVALUATION TEST PAPER
QUESTIONS SOLUTIONS GRADED A PLUS
◉ 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.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: 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..
Answer:
◉ 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?.
Answer: 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
E. ΔT.
Answer: B. ΔH
◉ Which of the following atoms does not commonly form hydrogen
bonds between or within biological molecules?
CERTIFICATION EVALUATION TEST PAPER
QUESTIONS SOLUTIONS GRADED A PLUS
◉ 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.
Answer: 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.
Answer: 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.
Answer: 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.
Answer: 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..
Answer:
◉ 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?.
Answer: 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
E. ΔT.
Answer: B. ΔH
◉ Which of the following atoms does not commonly form hydrogen
bonds between or within biological molecules?
