Biochem Module 6 Exam Test Questions
And Answers| Updated 2026/2027
B-form and A-form - ANSWER -What type(s) of DNA has a right-handed helix?
cAMP - ANSWER -Which of the following is a second messenger in cells?
FAD
cAMP
AMP
dATP
UTP
FAD - ANSWER -Which of the following acts a coenzyme?
FAD
ATP
AMP
cAMP
GGG
Shuttles hydrogen from one molecule to another in enzyme catalyzed reactions -
ANSWER -What is the function of FAD?
65% - ANSWER -What percentage of ribosomes does rRNA make up?
35% - ANSWER -What percentage of ribosomes does proteins make up?
Erwin Chargraff - ANSWER -The conclusion that G and C are present in DNA in
equimolar is credited to ___.
5' to 3' - ANSWER -How is the order of nucleotides in DNA written?
D) Two equally sized grooves that run up the sides of the helix - ANSWER -In
the Watson-Crick model for the double helix, which statement is NOT true?
A) The 2 strands run anti-parallel to one another
B) The base-pairing occurs on the inside of the double helix
, C) The double helix (B-form) is right-handed
D) Two equally sized grooves that run up the sides of the helix
E) The 2 strands have complementary sequences
3' end (at the top) - ANSWER -Where does the amino acid attach to the tRNA?
GTP - ANSWER -Besides ATP, which other nucleotide is part of energy storage
in cells?
refers to a ring-shaped carbon chain that has at least 1 atom that isn't carbon in the
ring - ANSWER -What does heterocyclic mean?
UMP - ANSWER -A major component of RNA, but not DNA is
The structure of DNA consists of two chains, or strands, that are not identical, but
are complementary. This means that one chain binds to the other through hydrogen
binding between the bases adenine and thymine, and also between cytosine and
guanine. Adenine will only bind to thymine, and cytosine will only bind to
guanine. Therefore, the two DNA strands are complementary because the bases of
each chain participate in complementary base pairing. - ANSWER -Scientists say
that 2 DNA strands are complementary. Briefly describe what is meant by
complementary. Provide an example in your response.
Non-covalent interactions contribute to the 3D shape and structures of RNA
molecules by allowing RNA to fold on itself via hydrogen bonding between
complementary base pairs. Nucleotides interact with complementary resides to
produce a secondary structure. - ANSWER -Briefly describe how non-covalent
interactions contribute to the 3D shapes and structures of RNA molecules.
The Z-form of DNA is left-handed, while the A-form of DNA is right-handed. -
ANSWER -In one sentence, identify the most noticeable difference between
between the A-form and Z-form of DNA.
(A) nucleotides - ANSWER -In nucleic acid chemistry, compounds that contain
an organic nitrogen-containing base, sugar, and phosphate group are called _(A)_.
(B) adenine and guanine - ANSWER -Two purines found in DNA are _(B)_ .
(C) uracil - ANSWER -A pyrimidine found in all RNA, but not in DNA is _(C)_.
And Answers| Updated 2026/2027
B-form and A-form - ANSWER -What type(s) of DNA has a right-handed helix?
cAMP - ANSWER -Which of the following is a second messenger in cells?
FAD
cAMP
AMP
dATP
UTP
FAD - ANSWER -Which of the following acts a coenzyme?
FAD
ATP
AMP
cAMP
GGG
Shuttles hydrogen from one molecule to another in enzyme catalyzed reactions -
ANSWER -What is the function of FAD?
65% - ANSWER -What percentage of ribosomes does rRNA make up?
35% - ANSWER -What percentage of ribosomes does proteins make up?
Erwin Chargraff - ANSWER -The conclusion that G and C are present in DNA in
equimolar is credited to ___.
5' to 3' - ANSWER -How is the order of nucleotides in DNA written?
D) Two equally sized grooves that run up the sides of the helix - ANSWER -In
the Watson-Crick model for the double helix, which statement is NOT true?
A) The 2 strands run anti-parallel to one another
B) The base-pairing occurs on the inside of the double helix
, C) The double helix (B-form) is right-handed
D) Two equally sized grooves that run up the sides of the helix
E) The 2 strands have complementary sequences
3' end (at the top) - ANSWER -Where does the amino acid attach to the tRNA?
GTP - ANSWER -Besides ATP, which other nucleotide is part of energy storage
in cells?
refers to a ring-shaped carbon chain that has at least 1 atom that isn't carbon in the
ring - ANSWER -What does heterocyclic mean?
UMP - ANSWER -A major component of RNA, but not DNA is
The structure of DNA consists of two chains, or strands, that are not identical, but
are complementary. This means that one chain binds to the other through hydrogen
binding between the bases adenine and thymine, and also between cytosine and
guanine. Adenine will only bind to thymine, and cytosine will only bind to
guanine. Therefore, the two DNA strands are complementary because the bases of
each chain participate in complementary base pairing. - ANSWER -Scientists say
that 2 DNA strands are complementary. Briefly describe what is meant by
complementary. Provide an example in your response.
Non-covalent interactions contribute to the 3D shape and structures of RNA
molecules by allowing RNA to fold on itself via hydrogen bonding between
complementary base pairs. Nucleotides interact with complementary resides to
produce a secondary structure. - ANSWER -Briefly describe how non-covalent
interactions contribute to the 3D shapes and structures of RNA molecules.
The Z-form of DNA is left-handed, while the A-form of DNA is right-handed. -
ANSWER -In one sentence, identify the most noticeable difference between
between the A-form and Z-form of DNA.
(A) nucleotides - ANSWER -In nucleic acid chemistry, compounds that contain
an organic nitrogen-containing base, sugar, and phosphate group are called _(A)_.
(B) adenine and guanine - ANSWER -Two purines found in DNA are _(B)_ .
(C) uracil - ANSWER -A pyrimidine found in all RNA, but not in DNA is _(C)_.
