1. Give an example of a structural protein that DNA codes for:
- Haemoglobin and Cellulose
- Collagen and Keratin
- Fibre and Hooves
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2. what is meant by the code is almost universal?
- the same sequences of bases, code for the same amino acids in all organisms
- the genetic code exists all over the world
- every organism has the same proteins
- all DNA is the same
3. What is meant by the term Reference Strand?
- An enzyme used to catalyse mRNA production
- A template for translation
- A strand of DNA that mRNA uses as a template in transcription
- A strand that people refer to when wanting to know which bases code for what protein
4. what is meant by the term 'stop codon'?
- a codon that does not code for an amino acid, but instead indicates the end of a polypeptide chain
- a codon that stops the production of ATP within a cell
- a codon that stops all metabolic functions within a cell
- a codon that doesnt stop working
5. What evidence is there to suggest that the genetic code evolved early on?
- it is non-overlapping
- it is very long
- it is almost universal
- it is degenerate