12/13 Flashcards

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0
Q

What are nucleotides made of?

A

Phosphate, sugar, base

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1
Q

What are the three roles of DNA?

A

Storing information
Transmitting information
Copying information

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2
Q

What are the four bases and how do they pair up?

A

Adenine, thymine, guanine, cytosine

A with t and g with c

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3
Q

What shape is DNA?

A

Double helix

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4
Q

What does Chargaff’s rule explain?

A

Base pairing

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5
Q

What do hydrogen bonds do?

A

Connects bases

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6
Q

What’s replication?

A

The copying or duplication of DNA?

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7
Q

How does replication occur in prokaryotes?

A

Starts at one point, proceeds in two directions

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8
Q

How does replication occur in eukaryotes?

A

Begins at hundreds or dozens points, then proceeds in two directions

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9
Q

What did Rosalind Frank discover?

A

Spiral shape of DNA using X-rays

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10
Q

What did Watson and Crick discover?

A

Double helix shape

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11
Q

What does RNA stand for

A

Ribonucleic acid

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