BIOCHEM Exam 4 With Questions And
Answers Latest Update 2026
Core histones (H2A, H2B, H3, and H4) contain
many negatively charged amino acid resides, FALSE
such as aspartates and glutamates.
DNA replication in bacterium Escherichia coli
begins at a site in the DNA called [ ]. At the
replication fork, the [ ] strand is synthesized
continuously while the [ ] strand is
synthesized discontinuously (in fragments). The
new DNA strand, which is synthesized
discontinuously, initially consists of short DNA Origin, leading, lagging, Okazazki, primase, DNA
pieces that are called [ ]. A short RNA primer polymerase, exonuclease, ligase
at the beginning of each of the DNA fragments
is synthesized by an enzyme called [ ], and
this RNA primer is later removed by the enzyme
called [ ] using its [ ] activity. Single-
strand breaks (nicks) that are left behind in this
process are sealed by the enzyme called [ ].
The schematic diagram below shows
A. Site of action of DNA ligase, B. An Okazaki
organization of the DNA replication fork. Match
fragment, C. Lagging strand, D. Site of action of
parts of the diagram (labeled A-F) with the
DNA topoisomerase E. Site of action of DNA
corresponding term from the answer list
helicase, F. Leading strand
(designated 1-6).
Initiation step of protein synthesis in bacteria
Release factors (RF1, RF2).
DOES NOT require which of the following?
Peptidyl transferase center of a ribosome
TRUE
catalyzes two distinct chemical reactions.
A. Small ribosomal subunit, B. Large ribosomal
The schematic diagram below shows functional
subunit, C. Aminoacyl-tRNA in the A site, D.
organization of translating ribosome. Match
Amino acid residue, E. Peptidyl-tRNA in the P
parts of the diagram (labeled A-J) with the
site, F. Growing polypeptide chain, G. Deacylated
corresponding term from the answer list
tRNA in the E site, H. Anticodon, I. Codon, J.
(designated 1-15)
Messenger RNA
, The schematic diagram below shows the A. Transcription bubble, B. Coding DNA strand,
functional organization of transcribing RNA C. Template DNA strand, D. 5'-end, E. RNA
polymerase. Match parts of the diagram (labeled transcript, F. DNA-RNA hybrid, G. 3'-end
A-G) with the corresponding term from the
answer list (designated 1-12).. Note that some of
the items from the answer list should NOT be
Answers Latest Update 2026
Core histones (H2A, H2B, H3, and H4) contain
many negatively charged amino acid resides, FALSE
such as aspartates and glutamates.
DNA replication in bacterium Escherichia coli
begins at a site in the DNA called [ ]. At the
replication fork, the [ ] strand is synthesized
continuously while the [ ] strand is
synthesized discontinuously (in fragments). The
new DNA strand, which is synthesized
discontinuously, initially consists of short DNA Origin, leading, lagging, Okazazki, primase, DNA
pieces that are called [ ]. A short RNA primer polymerase, exonuclease, ligase
at the beginning of each of the DNA fragments
is synthesized by an enzyme called [ ], and
this RNA primer is later removed by the enzyme
called [ ] using its [ ] activity. Single-
strand breaks (nicks) that are left behind in this
process are sealed by the enzyme called [ ].
The schematic diagram below shows
A. Site of action of DNA ligase, B. An Okazaki
organization of the DNA replication fork. Match
fragment, C. Lagging strand, D. Site of action of
parts of the diagram (labeled A-F) with the
DNA topoisomerase E. Site of action of DNA
corresponding term from the answer list
helicase, F. Leading strand
(designated 1-6).
Initiation step of protein synthesis in bacteria
Release factors (RF1, RF2).
DOES NOT require which of the following?
Peptidyl transferase center of a ribosome
TRUE
catalyzes two distinct chemical reactions.
A. Small ribosomal subunit, B. Large ribosomal
The schematic diagram below shows functional
subunit, C. Aminoacyl-tRNA in the A site, D.
organization of translating ribosome. Match
Amino acid residue, E. Peptidyl-tRNA in the P
parts of the diagram (labeled A-J) with the
site, F. Growing polypeptide chain, G. Deacylated
corresponding term from the answer list
tRNA in the E site, H. Anticodon, I. Codon, J.
(designated 1-15)
Messenger RNA
, The schematic diagram below shows the A. Transcription bubble, B. Coding DNA strand,
functional organization of transcribing RNA C. Template DNA strand, D. 5'-end, E. RNA
polymerase. Match parts of the diagram (labeled transcript, F. DNA-RNA hybrid, G. 3'-end
A-G) with the corresponding term from the
answer list (designated 1-12).. Note that some of
the items from the answer list should NOT be
