Biochem Module 6 Exam Questions and Correct
Answers | Latest Update
In DNA, adenine always pairs with Ans: thymine
In RNA, cytosine always pairs with Ans: guanine
In RNA, adenine always pairs with Ans: uracil
DNA is built from which of the following?
nucleosides
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genes
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purines
nucleotides
codons Ans: nucleotides
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The double helix of DNA is stabilized mainly by Ans: hydrogen bonds
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What pentose sugar is a constituent of DNA? Ans: 2-deoxyribose
What pentose sugar is a constituent of RNA? Ans: ribose
Pyrimidines have ________ ring(s), containing ______ nitrogen(s). Ans: 1
ring, 2 nitrogens
Purines have ________ ring(s), (each) containing ______ nitrogen(s). Ans: 2
rings, 2 nitrogens
What nucleic acid is responsible for using the encoded genetic
information to produce of proteins found in living organisms? Ans:
ribonucleic acid (RNA)
What are the complementary bases? Ans: A-T/U
C-G
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How many hydrogen bonds are made between guanine and its
complementary nucleotide? Ans: 3 hydrogen bonds are made between G
and C
How many hydrogen bonds are made between adenine and its
complementary nucleotide? Ans: 2 hydrogen bonds are made between
adenine and thymine/uracil
What is the complementary strand of DNA for the base sequence of DNA
5'-GCATGAGCC-3'? Ans: 3'-CGTACTCGG-5'
What is the complementary strand of RNA for the base sequence of RNA
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5'-GCATGAGCC-3'? Ans: 3'-CGUAGUCGG-5'
Which type of RNA functions to carry genetic information from the DNA
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to ribosome? Ans: mRNA
What is the set of three sequential nucleotides that encodes for a
particular amino acid? Ans: codon
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What type(s) of DNA has a right-handed helix? Ans: B-form and A-form
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Which of the following is a second messenger in cells?
FAD
cAMP
AMP
dATP
UTP Ans: cAMP
Which of the following acts a coenzyme?
FAD
ATP