1.6 Nucleic Acids Flashcards

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1
Q

What are the components of a nucleotide?

A

Pentose sugar
Phosphate
Nitrogenous organic base

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2
Q

Which neucleotide bases are purines and which are pyrimidines?

A

Purines: adenine and guanine
Pyrimidines: cytosine, uracil and thymine

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3
Q

How are nucleotide bases linked?

A

Linked by condensation reactions to form polymers (RNA and DNA)

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4
Q

What is DNA made of?

A

2 chains liked via the base pairs (G - C & A - T)

Base pairs linked by hydrogen bonds to form a double helix

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5
Q

What is RNA made of?

A

C - G & A - U (uracil)

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6
Q

What are the major functions of DNA?

A

Replication in dividing cells.

Carrying the information for protein synthesis in all cells.

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7
Q

What is replication necessary for?

A

It allows accurate copying of DNA for mitosis and meiosis.

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