PRINCIPLES OF BIOCHEMISTRY 7TH
EDITION ACTUAL EXAM PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉3
Answer: Guanine binds to cytosine with how many hydrogen bonds?
a. 1 b. 3 c. 4 d. 2
◉2
Answer: Adenine binds to thymine with how many hydrogen bonds?
a. 1 b. 2 c. 3 d. 4
◉ Nucleosome
Answer: What is the functional unit of chromatin? a. Euchromatin b.
Heterochromatin c. Histone d. Nucleosome
◉ A histone octamer
Answer: A nucleosome core particle contains ___ and about 147 base
pairs. A histone dimer A histone octamer One histone
,◉ Positively
Answer: Histones are ___ charged. Negatively Positively
◉ Negatively
Answer: DNA sugar-phosphates are ___ charged. a. Negatively b.
Positively
◉ H2A, H2B, H3, and H4
Answer: The histone octamer contains 2 molecules each of a. H2A,
H2B, H3, and H4 b. H1, H3, and H4 c. H1, H2A, H2B, and H3
◉ True
Answer: (T/F) RNAs are single-stranded molecules a. True b. False
◉ Hairpin
Answer: RNAs often have complex secondary structures that fold to
form what structure? a. Double helix b. Hairpin
◉ Carry genetic information from the gene to a ribosome
Answer: What is the function of mRNA? a. Carry activated amino
acids to ribosomes b. Catalyze RNA cleavage c. Carry genetic
information from the gene to a ribosome
, ◉ lOMoARcPSD|54731921
Answer:
◉ Carry activated amino acids to ribosomes
Answer: what is the function of trna? A. Carry activated amino acids
to ribosomes b. Catalyze RNA cleavage c. Carry genetic information
from the gene to a ribosome
◉ Catalyze RNA cleavage
Answer: What is the function of small RNA? A. Carry activated amino
acids to ribosomes b. Catalyze RNA cleavage c. Carry genetic
information from the gene to a ribosome
◉ 80
Answer: Ribosomal RNA (rRNA) accounts for approximately ____% of
RNA in cells. a. 20 b. 40 c. 60 d. 80
◉ Replication
Answer: What is the name of the process where DNA strands are
separated and serve as template strands for new strand synthesis? a.
Translation b. Transcription c. Replication
◉ Semi-conservative
EDITION ACTUAL EXAM PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉3
Answer: Guanine binds to cytosine with how many hydrogen bonds?
a. 1 b. 3 c. 4 d. 2
◉2
Answer: Adenine binds to thymine with how many hydrogen bonds?
a. 1 b. 2 c. 3 d. 4
◉ Nucleosome
Answer: What is the functional unit of chromatin? a. Euchromatin b.
Heterochromatin c. Histone d. Nucleosome
◉ A histone octamer
Answer: A nucleosome core particle contains ___ and about 147 base
pairs. A histone dimer A histone octamer One histone
,◉ Positively
Answer: Histones are ___ charged. Negatively Positively
◉ Negatively
Answer: DNA sugar-phosphates are ___ charged. a. Negatively b.
Positively
◉ H2A, H2B, H3, and H4
Answer: The histone octamer contains 2 molecules each of a. H2A,
H2B, H3, and H4 b. H1, H3, and H4 c. H1, H2A, H2B, and H3
◉ True
Answer: (T/F) RNAs are single-stranded molecules a. True b. False
◉ Hairpin
Answer: RNAs often have complex secondary structures that fold to
form what structure? a. Double helix b. Hairpin
◉ Carry genetic information from the gene to a ribosome
Answer: What is the function of mRNA? a. Carry activated amino
acids to ribosomes b. Catalyze RNA cleavage c. Carry genetic
information from the gene to a ribosome
, ◉ lOMoARcPSD|54731921
Answer:
◉ Carry activated amino acids to ribosomes
Answer: what is the function of trna? A. Carry activated amino acids
to ribosomes b. Catalyze RNA cleavage c. Carry genetic information
from the gene to a ribosome
◉ Catalyze RNA cleavage
Answer: What is the function of small RNA? A. Carry activated amino
acids to ribosomes b. Catalyze RNA cleavage c. Carry genetic
information from the gene to a ribosome
◉ 80
Answer: Ribosomal RNA (rRNA) accounts for approximately ____% of
RNA in cells. a. 20 b. 40 c. 60 d. 80
◉ Replication
Answer: What is the name of the process where DNA strands are
separated and serve as template strands for new strand synthesis? a.
Translation b. Transcription c. Replication
◉ Semi-conservative
