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Title: Biology (Additional Unit 2) (DNA structure and simple definitions)
Description: Information on extraction of DNA included along with DNA diagram and brief explanation that is vital for someone to know if they are taking a biology exam. ideal for GCSE revision.
Description: Information on extraction of DNA included along with DNA diagram and brief explanation that is vital for someone to know if they are taking a biology exam. ideal for GCSE revision.
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REVISION NOTES
DNA: Topic 3: Biology: Additional exam
Definitions:
This is the structure of DNA
...
The four bases are
paired up specifically
...
The DNA
strands are held together by
weak hydrogen bonds
...
1
...
They
have an x –shaped structure
...
Humans have a pair of 23 chromosomes, in total 46
...
2
...
You have genes for your characteristics
...
Can determine your
hair colour or skin colour
...
DNA is a long twisted molecule that is made up of strands
...
The process of extracting DNA:
1
...
Helps by breaking
open the cells and releasing DNA
2
...
Helps to break up the proteins in cell membranes
...
Iced ethanol is then poured down the tube adding
to the mixture separating the DNA from the liquid
Title: Biology (Additional Unit 2) (DNA structure and simple definitions)
Description: Information on extraction of DNA included along with DNA diagram and brief explanation that is vital for someone to know if they are taking a biology exam. ideal for GCSE revision.
Description: Information on extraction of DNA included along with DNA diagram and brief explanation that is vital for someone to know if they are taking a biology exam. ideal for GCSE revision.