questions Flashcards
1
Q
describe the base- pair rule
A
There are four letters called ATC and G. A is always with T and C is always with G.
2
Q
what are the 4 things that make up a necleotide?
A
deoxyribose, a phosphate group and a base
3
Q
what does anti-parallel mean?
A
it means the strands go in opposite directions
4
Q
why do we add salt and washing up liquid to the extraction fluid when extracting DNA?
A
because it’s very good at breaking down fat and grease
5
Q
why do we add ethanol to the mixture?
A
to precipitate the dna/ help see the dna
6
Q
why do we add protease enzyme solution to the DNA extraction practical?
A
to break down proteins in the chromosomes/ DNA
7
Q
suggest how using blend the fruit/ use a pestle and mortar increases the rate of reaction
A
increases the surface area of the fruit
