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Messenger RNA, or mRNA, is used to carry or contain the information that DNA contains. DNA is too large to be carried out of the nucleus, so mRNA is used to transport the necessary inf...

1. DNA is double-stranded in the form of a double helix, whereas RNA is much more commonly found in single-stranded form.

2. The pentose (5 carbon) sugar found in DNA is deoxyribose, wher...

Transcription is the process of transcribing the DNA code into another type of code or message - mRNA (messenger RNA). 

An enzyme called RNA polymerase binds to ...

Enzymes are proteins that are folded into specific shapes to allow for certain 'substrates', the other molecule involved, to bind. This area of binding is known as the 'active site', as it's where all ...

All of this is to do with moving stuff over a barrier called a cell membrane.

I want you to imagine the cell membrane to be like a border of a country and the stuff to be different pizzas...