Nucleic Acids

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In DNA, what is under the plane of carbon-2?
A hydrogen atom
1 of 18
In RNA, what is under the plane of carbon-2?
A hydroxyl (OH)
2 of 18
Where does the nitrogenous base attach to the ribose molecule?
C-1
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Where does the phosphate group attach to the ribose molecule?
C-5
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What is the bond between the phosphate group of one nucleotide and the ribose of another, and where?
Phosphodiester bond; C-3
5 of 18
Which nitrogenous bases are purines?
A and G
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How many rings do purines have?
2 double carbon rings
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How many rings do pyrimidines have?
1 double carbon ring
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Which nitrogenous bases are pyrimidines?
T, C, U
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Which are larger, purines or pyrimidines?
Purines
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How many hydrogen bonds form between A and T, or A and U?
2 hydrogen bonds
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How many hydrogen bonds form between C and G?
3 hydrogen bonds
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Why is it good that hydrogen bonds are weak?
Allow for easy replication and protein synthesis
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What else makes for easy replication?
Base pairing
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What are the backbones broken down by?
DNA helicase
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What does the phosphodiester backbone protect the DNA strand from?
Chemical reactions
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What is the length of RNA polynucleotide chains?
Short
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What does each backbone strand act as during replication?
A template
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Other cards in this set

Card 2

Front

In RNA, what is under the plane of carbon-2?

Back

A hydroxyl (OH)

Card 3

Front

Where does the nitrogenous base attach to the ribose molecule?

Back

Preview of the front of card 3

Card 4

Front

Where does the phosphate group attach to the ribose molecule?

Back

Preview of the front of card 4

Card 5

Front

What is the bond between the phosphate group of one nucleotide and the ribose of another, and where?

Back

Preview of the front of card 5
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