Describe how mRNA is produced in the nucleus of a cell
Helicase (an enzyme) breaks the hydrogen bonds between the DNA resulting in two strands. Only one strand acts as a template. RNA nucleotides attracted to exposed bases according to base pairing rules (A-U, G-C). RNA polymerase joins nucleotides together.
RN
Related Biology A Level answers
All answers ▸What is the structure of DNA?
How is insulin released in response to raised plasma glucose?
Describe how bacteria are used to genetically modify crops. Describe two examples of GM crops. Describe the reasons why some are opposed to GM crops
Suggest why some animals (such as snakes) can go for longer periods of time without eating, than humans?