DNA Structure & Function Flashcards by Hugh Alley | Brainscape

Q

Name the 4 base pairs in DNA

A

adenine, thymine, guanine, cytosine

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Q

Which base pairs bond with one another?

A

adenine:thymine guanine:cytosine

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Q

What are the basic components in DNA?

A

Each unit is made of a base, a sugar, and a phosphate

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Q

Sketch out a purine base & name them

A

adenine, guanine

2 rings on base

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Q

Sketch out a pyramidine base and name them

A

thymine, cytosine (shown)

1 ring

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Q

What makes DNA acidic?

A

Phosphate groups on nucleotides are acidic

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Q

Name the complement to:

5’-GCAT-3’

A

3’-CGTA-5’

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Q

What nucleotide bonds are strongest? AT vs GC

A

AT has two H bonds

GC has three H bonds, therefore stronger

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Q

Name the Pyramidine bases

A

Pyramids have sharp edges so they CUT

Cytosine

Uracil

Thymine

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Q

Name the Purine bases

A

Guanine

Adenine

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Q

What are the basics of the Watson-Crick model?

A

DNA is a right handed double helix

sugar-phosphate backbone (phosphodiester bonds)

antiparallel strands

H-bonds hold the strands together

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Q

What are histones?

A

globular proteins around which DNA is wound

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