Genetics: Lac operon, beta-galactosidase, allolactose, etc.

Question 1










What is the DNA element where the lac repressor binds?
Answer





Selected Answer:

B.

operator




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 Question 2










Which gene codes for beta-galactosidase?
Answer





Selected Answer:

E.

lacZ









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 Question 3










Which of the following describes a protein?
Answer





Selected Answer:



repressor









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 Question 4










Which of the following describes a region of DNA?
Answer





Selected Answer:



operator









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 Question 5









In derepression, which molecules bind to each other?
Answer





Selected Answer:



allolactose to repressor