L9 RNA

Question 1

Who provided the first indication that DNA was the inheritance factor?

Answer 1

Oswald T. Avery

Question 2

What experiment provided evidence for the semi-conservative model of DNA replication?

Answer 2

The Meselson-Stahl experiment

Question 3

What are the four nucleotide bases in DNA?

Answer 3

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

Question 4

What is the difference between the leading and lagging strands during DNA replication?

Answer 4

The leading strand is synthesized continuously, while the lagging strand is synthesized in short fragments (Okazaki fragments)

Question 5

What enzyme is responsible for joining Okazaki fragments?

Answer 5

DNA ligase

Question 6

What is the function of DNA primase in replication?

Answer 6

To synthesize short RNA primers to initiate DNA synthesis

Question 7

How many base pairs are there per turn of the DNA double helix?

Answer 7

10 base pairs

Question 8

What is the directionality of DNA strand synthesis?

Answer 8

5’ to 3’

Question 9

What type of bonds hold the two strands of DNA together?

Answer 9

Hydrogen bonds between complementary base pairs

Question 10

What hypothesis did Beadle and Tatum propose?

Answer 10

The ‘one gene-one enzyme’ hypothesis