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