A certain enzyme is synthesized whenever the solution in which some cells are growing lacks substance X.This phenomenon is most likely an example of a(n) _______ system.
A) inducible
B) positive
C) negative
D) repressible
E) positive-negative
Correct Answer:
Verified
Q29: Refer to the figure showing the initiation
Q30: A DNA sequence is several thousands of
Q31: What is the main difference between general
Q32: Refer to the figure showing the initiation
Q33: When an enhancer is bound, it
A) increases
Q35: If a mutation in a silencer makes
Q36: The trp operon
A) codes for proteins needed
Q37: How do negative regulation and positive regulation
Q38: Helix-turn-helix is a _ found in a
Q39: Which statement about TFIID is false?
A) It
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