Chapter 10- Nucleotides and Nucleic Acids Flashcards

1
Q

3 Main components of DNA

A
  • Nitrogenous bases
  • Pentose
    Phosphate
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2
Q

Purine Ring system

A

aromatic 6 ring (2 N) attached to aromatic 5 ring (N and NH)

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3
Q

Pyrimidine ring

A

Aromatic 6 ring (2 N)

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4
Q

What happens when bases become charged?

A

they become soluble in water

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5
Q

Are bases soluble in water at pH 7?

A

NO (hydrophobic)

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6
Q

Bases can be charged at

A

very low or high pH

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7
Q

The double bond of bases absorb at

A

260 nm

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8
Q

Difference between RNA and DNA structure

A

2’ OH in DNA and 2’ H in RNA

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9
Q

Phosphate’s charge at physiological pH

A

negative

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10
Q

Nucleoside

A

Ribose + Base

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11
Q

Nucleotide

A

Ribose + Base + phosphate

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