Unit 1 Topic 1- Structure Of DNA Flashcards
1
Q
What unit is DNA comprised of?
A
Neuclotides
2
Q
What do neuclotides consist of?
A
A phosphate, a deoxyribose sugar and a base
3
Q
What a sugar-phosphate backbone?
A
The bonds between one phosphate and the deoxyribose sugar of another
4
Q
What are bases held together by?
A
A weak hydrogen bond
5
Q
What is a eukaryote?
A
Usually multicellular organisms, they have a nucleus and contain membrane bound organisms. For example yeast, plant and animal cells
6
Q
What is a prokaryote?
A
Single cell organisms with no neucleus and contain circular chromosomes. For example bacteria
7
Q
What is the protein that DNA is wrapped around when it is arranged into chromosome to ensure it doesn’t tangle?
A
Hystone
8
Q
Where are the circular chromosomes held in eukaryotic cells?
A
Mitochondria and chloroplasts
