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Introductory Biology Midterm - Part 3 of 3!
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Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15
Problem 16
Problem 17
Problem 18
Problem 19
Problem 20
Problem 21
Problem 22
Problem 23
Problem 24
Introductory Biology Midterm - Part 3 of 3!
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11. How Genes Are Controlled / Gene Regulation in Bacteria / Problem 2
Problem 2
Which of the following best describes the genes and their functions in the lac operon?
A
The lac operon contains one gene: lacI, which encodes the repressor protein.
B
The lac operon contains four genes responsible for glucose metabolism.
C
The lac operon contains two genes: lacY and lacA, both involved in tryptophan synthesis.
D
The lac operon contains three genes: lacZ, lacY, and lacA. LacZ encodes β-galactosidase, lacY encodes permease, and lacA encodes transacetylase.
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