CHAPTER 1

Question 1

How many base pairs are needed to make a helical turn in A-DNA

Answer 1

11

Question 2

According to Chargaff’s rule, the base of both chains lie parallel to the axis, and they are stacked on one another

Answer 2

False

Question 3

What linkage is seen in nucleic acids?

Answer 3

Phosphodiested bonds

Question 4

What is the most common form of DNA?

Answer 4

B

Question 5

How many rules are there in Chargaff’s rule?

Answer 5

9

Question 6

According to Chargaff’s rule, 3 long polynucleotide chains are coiled around a central axis, forming a right-handed double helix

Answer 6

False

Question 7

According to Chargaff’s rule, the 2 DNA strand are antiparallel, that is, their 5’ to 3’ orientation runs in opposite directions

Answer 7

True

Question 8

What is the building blocks of nucleic acids?

Answer 8

Nucleotides

Question 9

Who is the person responsible for the discovery of transforming principle?

Answer 9

Frederick Griffith

Question 10

What means of DNA denaturation is used in PCR?

Answer 10

High temperature

Question 11

According to Chargaff’s rule, each complete turn of helix is 20 A degree long

Answer 11

False

Question 12

DNA strand cannot be separated by heat

Answer 12

False

Question 13

What “tags” were used in the experiment of Hershey and Chase?

Answer 13

Sulfur and Phosphorus

Question 14

According to Chargaff’s rule, the nitrogenous bases of opposite chains are paired as the result of the formation of a hydrogen bond in DNA

Answer 14

True

Question 15

RNA can be double stranded

Answer 15

True