2.5 - DNA Structure Flashcards by Mia Fuller | Brainscape

Q

What is a mononuleotide consist of?

A

A phospahate
An organic nitogrnous base
A pentose sugar

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Q

What reaction joins mononucleotides together?

A

condensation reaction

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Q

What is released in a condensation reaction?

A

Releases water

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Q

What reaction breaks mononucleotides?

A

Hydrolysis

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Q

What is the pentose sugar in DNA?

A

Deoxyribose

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Q

What is the pentose sugar in RNA?

A

Ribose

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Q

What is the organic base in DNA?

A

Adenine, Thymine, Guanine, Cytosine

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Q

What is the organic base in RNA?

A

Adenine, Uracil, Guanine, Cytosine

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Q

What is a dinucleotide?

A

Is two monucleotides joined together

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Q

What is a polynucleotide?

A

A chain of nucleotides

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Q

What bond joins dinucleotides?

A

Phosphodiester bond

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Q

How are two monucleotides joined together?

A

Condensation reaction

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Q

Where do two nucleotides join?

A

between a deoxyribose sugar and phosphate group

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Q

What is a polynucleotide in DNA?

A

DNA is a double stranded that coils into a double helix.

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Q

What is a polynucleotide in RNA?

A

RNA is a single strand

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Q

How do polynucleotides join?

A

Phosphodiester bond

Q

What are the purines?

A

Adenine and Guanine

Q

What are the pyramidines?

A

Cytosine, thymine and uracil

Q

What is DNA complementary base pairing?

A

Adenine, Thymine, Guanine, Cytosine

Q

What is RNA complementary base pairing?

A

Adenine, Uracil, Guanine, Cytosine

Q

Which bases have two hydrogen bonds?

A

A and T

Q

Which bases have three hydrogen bonds?

A

C and G