Unit 1 Topic 1- Structure Of DNA Flashcards

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1
Q

What unit is DNA comprised of?

A

Neuclotides

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2
Q

What do neuclotides consist of?

A

A phosphate, a deoxyribose sugar and a base

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3
Q

What a sugar-phosphate backbone?

A

The bonds between one phosphate and the deoxyribose sugar of another

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4
Q

What are bases held together by?

A

A weak hydrogen bond

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5
Q

What is a eukaryote?

A

Usually multicellular organisms, they have a nucleus and contain membrane bound organisms. For example yeast, plant and animal cells

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6
Q

What is a prokaryote?

A

Single cell organisms with no neucleus and contain circular chromosomes. For example bacteria

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7
Q

What is the protein that DNA is wrapped around when it is arranged into chromosome to ensure it doesn’t tangle?

A

Hystone

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8
Q

Where are the circular chromosomes held in eukaryotic cells?

A

Mitochondria and chloroplasts

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