D1.1 DNA Replication

Question 1

PCR (polymerase chain reaction)

Answer 1

Doubles DNA quantity
1. melting: breaks H bonds between DNA strands
2. annealing: cooling process which causes primers to bind
3. elongation: DNA polymerase assembles new strands

Question 2

Gel electrophoresis

Answer 2

Separates DNA by size and length in porous gel
- small molecules move further

Question 3

Proteosomes

Answer 3

Break down useless proteins

Question 4

Ubiquitin

Answer 4

Chains proteins which tag useless proteins (for proteosomes)