1 - Structure of DNA Flashcards
1
Q
3 Components of a Nucleotide
A
Phosphate
Deoxyribose sugar
Base
2
Q
Types of bonds holding bases of DNA strands together…
A
(Weak) Hydrogen bonds
3
Q
DNA strands are…
A
Antiparallel
4
Q
Prokaryotes
A
No distinct nucleus; DNA organised into rings and plasmids
e.g. Bacteria
5
Q
Eukaryotes
A
Linear chromosomes in nucleus (coiled with protein)
e.g. Fungi, green plants and animals
6
Q
Eukaryotic DNA associated with proteins?
A
Yes
7
Q
Prokaryotic cells associated with proteins?
A
Few or None
8
Q
Where is DNA found in circles?
A
Chloroplasts and Mitochondria
9
Q
Purpose of DNA replication…
A
To ensure that exact copies of the DNA are passed onto new cells
10
Q
What is a BASE?
A
A nitrogenous substance, part of a nucleotide
11
Q
What is a PROKARYOTIC CELL?
A
A cell that has no distinct nucleus
