1 If CAP could not bind to its CAP site due to a mutation th

1. If CAP could not bind to its CAP site due to a mutation, then what would be the reaction. Assume lactose is present in each scenario

a.transcription would be difficult to repress in the presence of glucose

b.transcription would be difficult to activate in the presence of glucose

c.transcription would be difficult to activate in the absence of glucose

d.transcription would be difficult to repress in the absence of glucose

2. Which of the following is not true regarding operons?

a.they encode for mRNA that contains coding sequence for two or more species

b.they have one stop codon

c.they have one promoter

d.they coordinately regulate a group of genes then encode proteins with a common functional goal

e.they have a single transcription sequence

Solution

Question 2:

The answer is b. They have one stop codon. As the operon composed with more no of funtioncal genes, each functinal gene will code for each peptide.So, each gene will have both start and stop codon. So, the answer b is wrong.

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