DNA

Question 1

Eukaryotic DNA structure

Answer 1

Linear
Associated with histones
Contains introns before translation

Question 2

Prokaryotic DNA structure

Answer 2

Circular
Not associated with histones
Doesn’t contain introns

Question 3

What type of DNA do chloroplasts and mitochondria have?

Answer 3

DNA like prokaryotic DNA

Question 4

DNA structure

Answer 4

Double stranded
Helical structure
Large molecule
Sugar phosphate backbone
Complementary base pairing - Thymine, guanine, adenine, cytosine
Many weak hydrogen bonds

Question 5

Complementary base pairing in DNA

Answer 5

Adenine - Thymine
Guanine - Cytosine

Question 6

DNA structure and its function

Answer 6

Double stranded SO they can act as a template in semi conservative replication
Helical Structure SO compact
Large molecule SO stores a lot of information
Complementary base pairing SO accurate replication can take place
Sugar phosphate backbone SO it has strength
Many weak H bonds SO is a stable molecule

Question 7

How does the seperation of strands occur in transcription?

Answer 7

DNA helicase unwinds the two strands
By breaking hydrogen bonds between base pairs