BIOCHEM MODULE 6 EXAM ACTUAL
(UPDATED 2026) QUESTIONS AND
VERIFIED ANSWERS
thymine -CORRECTANSWER In DNA, adenine always pairs with
guanine -CORRECTANSWER In RNA, cytosine always pairs with
uracil -CORRECTANSWER In RNA, adenine always pairs with
nucleotides -CORRECTANSWER DNA is built from which of the following?
nucleosides
genes
purines
nucleotides
codons
hydrogen bonds -CORRECTANSWER The double helix of DNA is stabilized mainly by
2-deoxyribose -CORRECTANSWER What pentose sugar is a constituent of DNA?
ribose -CORRECTANSWER What pentose sugar is a constituent of RNA?
, 1 ring, 2 nitrogens -CORRECTANSWER Pyrimidines have ________ ring(s), containing
______ nitrogen(s).
2 rings, 2 nitrogens -CORRECTANSWER Purines have ________ ring(s), (each)
containing ______ nitrogen(s).
ribonucleic acid (RNA) -CORRECTANSWER What nucleic acid is responsible for using
the encoded genetic information to produce of proteins found in living organisms?
A-T/U
C-G -CORRECTANSWER What are the complementary bases?
3 hydrogen bonds are made between G and C -CORRECTANSWER How many
hydrogen bonds are made between guanine and its complementary nucleotide?
2 hydrogen bonds are made between adenine and thymine/uracil -CORRECTANSWER
How many hydrogen bonds are made between adenine and its complementary
nucleotide?
3'-CGTACTCGG-5' -CORRECTANSWER What is the complementary strand of DNA for
the base sequence of DNA 5'-GCATGAGCC-3'?
(UPDATED 2026) QUESTIONS AND
VERIFIED ANSWERS
thymine -CORRECTANSWER In DNA, adenine always pairs with
guanine -CORRECTANSWER In RNA, cytosine always pairs with
uracil -CORRECTANSWER In RNA, adenine always pairs with
nucleotides -CORRECTANSWER DNA is built from which of the following?
nucleosides
genes
purines
nucleotides
codons
hydrogen bonds -CORRECTANSWER The double helix of DNA is stabilized mainly by
2-deoxyribose -CORRECTANSWER What pentose sugar is a constituent of DNA?
ribose -CORRECTANSWER What pentose sugar is a constituent of RNA?
, 1 ring, 2 nitrogens -CORRECTANSWER Pyrimidines have ________ ring(s), containing
______ nitrogen(s).
2 rings, 2 nitrogens -CORRECTANSWER Purines have ________ ring(s), (each)
containing ______ nitrogen(s).
ribonucleic acid (RNA) -CORRECTANSWER What nucleic acid is responsible for using
the encoded genetic information to produce of proteins found in living organisms?
A-T/U
C-G -CORRECTANSWER What are the complementary bases?
3 hydrogen bonds are made between G and C -CORRECTANSWER How many
hydrogen bonds are made between guanine and its complementary nucleotide?
2 hydrogen bonds are made between adenine and thymine/uracil -CORRECTANSWER
How many hydrogen bonds are made between adenine and its complementary
nucleotide?
3'-CGTACTCGG-5' -CORRECTANSWER What is the complementary strand of DNA for
the base sequence of DNA 5'-GCATGAGCC-3'?
