paper 3 (just excess)

Question 1

Why bacteria are able to use human DNA to produce human proteins:

Answer 1

• the genetic code is universal
• mechanisation of transcription is universal
• mechanisation of translation is universal

Question 2

Why bacteria are not able to produce every human protein:

Answer 2

• cannot splice, so cannot remove introns

Question 3

Purpose of a marker gene:

Answer 3

• allows detection of genetically modified cells

Question 4

Phosphocreatine:

Answer 4

• supply ATP for muscle contraction
• during intense exercise, it donates phosphate to ADP to produce ATP

Question 5

bonds in ATP:

Answer 5

phosphoanhydride bond