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Biology 1 Honors > DNA Replication > Flashcards

DNA Replication Flashcards

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1
Q

What does DNA stand for

A

Deoxyribonucleic Acid

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2
Q

Who is credited with discovering what DNA looks like

A

Watson and Crick

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3
Q

Who is known for taking “Image 51”

A

Rosalind Franklin

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4
Q

What does DNA look like

A

A double helix/twisted ladder

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5
Q

What are the four bases

A

Adenine (A), Thymine (T), Guanine (G), and Cytosine (C)

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6
Q

What base is paired with Adenine (A)

A

Thymine (T)

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7
Q

What base is paired with Guanine (G)

A

Cytosine (C)

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8
Q

What are the ‘rungs’ of the ladder made of

A

Base pairs

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9
Q

What are the base pairs held together by

A

Weak hydrogen bonds

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10
Q

What are the ‘sides’ of the ladder made of

A

Phosphate groups and deoxyribose sugars

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11
Q

What is the base unit of a DNA strand

A

Nucleotide

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12
Q

What are the two types of nucleotides

A

Purines and pyrimidines

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13
Q

Purines

A

Double ring, adenine (A) and guanine (G)

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14
Q

Pyrimidines

A

Single ring, cytosine (C) and thymine (T) [Technically also uracil (U)]

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15
Q

What direction do the two sides face

A

Anti-parallel, opposite directions

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16
Q

How many bonds are there between adenine (A) and thymine (T)

A

Two

17
Q

How many bonds are there between guanine (G) and cytosine (C)

A

Three

18
Q

What protein “unzips” the DNA strands

A

Helicase

19
Q

What protein attaches new nucleotides and proofreads the new DNA strands

A

Polymerase

20
Q

What are the two new DNA strands called

A

Identical daughter strands

21
Q

What kind of replication is DNA replication

A

Semiconservative replication

Biology 1 Honors (7 decks)

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