Portage Learning CHEM 210 Biochemistry
Biochem Module 6 Exam 50 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) ALREADY
GRADED A+ 2025 NEW UPDATE
(A) nucleotides - CORRECT ANSWER: In nucleic acid chemistry, compounds that
contain an organic nitrogen-containing base, sugar, and phosphate group are called
_(A)_.
(B) adenine and guanine - CORRECT ANSWER: Two purines found in DNA are _(B)_ .
(C) uracil - CORRECT ANSWER: A pyrimidine found in all RNA, but not in DNA is _(C)_.
(D) cytosine and guanine - CORRECT ANSWER: In DNA, the pair _(D)_ is held
together by 3 hydrogen bonds.
(E) 2-deoxyribose - CORRECT ANSWER: In DNA, the pentose _(E)_ serves as the
monosaccharide.
1 ring, 2 nitrogens - CORRECT ANSWER: Pyrimidines have ________ ring(s),
containing ______ nitrogen(s).
2 hydrogen bonds are made between adenine and thymine/uracil - CORRECT
ANSWER: How many hydrogen bonds are made between adenine and its
complementary nucleotide?
2 rings, 2 nitrogens - CORRECT ANSWER: Purines have ________ ring(s), (each)
containing ______ nitrogen(s).
, 2-deoxyribose - CORRECT ANSWER: What pentose sugar is a constituent of DNA?
3 hydrogen bonds are made between G and C - CORRECT ANSWER: How many
hydrogen bonds are made between guanine and its complementary nucleotide?
3' end (at the top) - CORRECT ANSWER: Where does the amino acid attach to the
tRNA?
3'-CGTACTCGG-5' - CORRECT ANSWER: What is the complementary strand of DNA
for the base sequence of DNA 5'-GCATGAGCC-3'?
3'-CGUAGUCGG-5' - CORRECT ANSWER: What is the complementary strand of RNA
for the base sequence of RNA 5'-GCATGAGCC-3'?
35% - CORRECT ANSWER: What percentage of ribosomes does proteins make up?
5' end: phosphate
3' end: -OH group - CORRECT ANSWER: How can you tell the difference between the
5' and 3' ends of DNA?
5' to 3' - CORRECT ANSWER: How is the order of nucleotides in DNA written?
65% - CORRECT ANSWER: What percentage of ribosomes does rRNA make up?
A base, ribose, and phosphoric acid. - CORRECT ANSWER: The monomers of RNA
nucleic aids, called nucleotides, consist of 3 parts. What are those 3 parts?
A-T/U
Biochem Module 6 Exam 50 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) ALREADY
GRADED A+ 2025 NEW UPDATE
(A) nucleotides - CORRECT ANSWER: In nucleic acid chemistry, compounds that
contain an organic nitrogen-containing base, sugar, and phosphate group are called
_(A)_.
(B) adenine and guanine - CORRECT ANSWER: Two purines found in DNA are _(B)_ .
(C) uracil - CORRECT ANSWER: A pyrimidine found in all RNA, but not in DNA is _(C)_.
(D) cytosine and guanine - CORRECT ANSWER: In DNA, the pair _(D)_ is held
together by 3 hydrogen bonds.
(E) 2-deoxyribose - CORRECT ANSWER: In DNA, the pentose _(E)_ serves as the
monosaccharide.
1 ring, 2 nitrogens - CORRECT ANSWER: Pyrimidines have ________ ring(s),
containing ______ nitrogen(s).
2 hydrogen bonds are made between adenine and thymine/uracil - CORRECT
ANSWER: How many hydrogen bonds are made between adenine and its
complementary nucleotide?
2 rings, 2 nitrogens - CORRECT ANSWER: Purines have ________ ring(s), (each)
containing ______ nitrogen(s).
, 2-deoxyribose - CORRECT ANSWER: What pentose sugar is a constituent of DNA?
3 hydrogen bonds are made between G and C - CORRECT ANSWER: How many
hydrogen bonds are made between guanine and its complementary nucleotide?
3' end (at the top) - CORRECT ANSWER: Where does the amino acid attach to the
tRNA?
3'-CGTACTCGG-5' - CORRECT ANSWER: What is the complementary strand of DNA
for the base sequence of DNA 5'-GCATGAGCC-3'?
3'-CGUAGUCGG-5' - CORRECT ANSWER: What is the complementary strand of RNA
for the base sequence of RNA 5'-GCATGAGCC-3'?
35% - CORRECT ANSWER: What percentage of ribosomes does proteins make up?
5' end: phosphate
3' end: -OH group - CORRECT ANSWER: How can you tell the difference between the
5' and 3' ends of DNA?
5' to 3' - CORRECT ANSWER: How is the order of nucleotides in DNA written?
65% - CORRECT ANSWER: What percentage of ribosomes does rRNA make up?
A base, ribose, and phosphoric acid. - CORRECT ANSWER: The monomers of RNA
nucleic aids, called nucleotides, consist of 3 parts. What are those 3 parts?
A-T/U
