Lecture 11: DNA Structure

Question 1

what is the single unit building block of the macromolecule DNA?

Answer 1

Nucleotide

Question 2

What is the bond between DNA?

Answer 2

phosphodiester bond

Question 3

what do phosphodiester bonds form?

Answer 3

polynucleotide= nucleic acid

Question 4

How is DNA strands synthesised?

Answer 4

5’ (5 prime) to 3’ (3 prime)

Question 5

What is a type of replication?

Answer 5

Semi-conservative:

each strand of the double helix is used as template stand for the synthesis of the two new strands

Question 6

Why does your cell replicate its DNA?

Answer 6

because your body needs to make more cells

Question 7

what are the building blocks of DNA?

Answer 7

a phosphate group, a sugar group and one of four types of nitrogen bases

Question 8

Does semi-conservative DNA replication allow genetic information to be passed onto newly synthesised
cells and the next generation?

Answer 8

The structure of the DNA double helix and self-propagation of DNA through semiconservative replication allows for storage and maintenance of both normal and abnormal genetic information, and transmission to daughter cells somatically and to the next generation through the germ-line.