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Biology 30 > Unit 2 > Flashcards

Unit 2 Flashcards

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1
Q

Who is known for discovering the double helix structure of DNA?

A

James Watson and Francis Crick

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2
Q

What technique did Rosalind Franklin use to study DNA?

A

X-ray crystallography

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3
Q

True or False: Chargaff’s rules state that the amount of adenine equals the amount of thymine in DNA.

A

True

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4
Q

Fill in the blank: The two strands of DNA are held together by __________ bonds.

A

hydrogen

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5
Q

What did Erwin Chargaff contribute to the understanding of DNA?

A

He discovered the base pairing rules.

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6
Q

Which scientist proposed the idea of the DNA double helix before Watson and Crick?

A

Linus Pauling

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7
Q

What are the four bases found in DNA?

A

Adenine, Thymine, Cytosine, Guanine

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8
Q

True or False: DNA is a type of protein.

A

False

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9
Q

What is the significance of the base pairing in DNA structure?

A

It allows for the accurate replication of DNA.

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10
Q

Who first suggested that DNA carries genetic information?

A

Frederick Griffith

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11
Q

Multiple choice: Which scientist’s work was crucial in understanding the helical structure of DNA? A) Watson B) Franklin C) Mendel D) Darwin

A

B) Franklin

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12
Q

What is the shape of the DNA molecule?

A

Double helix

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13
Q

Fill in the blank: The sugar in the backbone of DNA is __________.

A

deoxyribose

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14
Q

Who were awarded the Nobel Prize for their discovery of the DNA structure?

A

James Watson, Francis Crick, and Maurice Wilkins

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15
Q

True or False: DNA can be found in both the nucleus and the cytoplasm of a cell.

A

False

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16
Q

What does the term ‘antiparallel’ refer to in the context of DNA structure?

A

The two strands run in opposite directions.

17
Q

What role did Maurice Wilkins play in the discovery of DNA structure?

A

He provided X-ray diffraction images of DNA.

18
Q

Multiple choice: Which scientist used X-ray diffraction to capture images of DNA? A) Watson B) Franklin C) Wilkins D) Chargaff

A

B) Franklin

19
Q

True or False: The discovery of DNA structure was a collaborative effort among several scientists.

A

True

20
Q

What year was the structure of DNA published by Watson and Crick?

A

1953

21
Q

What is the primary function of DNA?

A

To store and transmit genetic information.

22
Q

Fill in the blank: The complementary base pairs in DNA are __________ and __________.

A

Adenine and Thymine; Cytosine and Guanine

23
Q

Which scientist’s research laid the groundwork for the concept of DNA as the genetic material?

A

Avery, MacLeod, and McCarty

24
Q

What is the importance of the hydrogen bonds in DNA?

A

They allow the strands to separate during replication.

25
Q

True or False: DNA replication is a conservative process.

A

False

26
Q

What is the primary building block of DNA?

A

Nucleotide

Biology 30 (2 decks)

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