Chapter 10 -1 Flashcards
1
Q
What is an operon?
A
units that regulate transcription
2
Q
What is the operon system?
A
promotor, operator, and groups of genes transcribed together
3
Q
What does the operator do?
A
control sequences that bind regulatory proteins
4
Q
What do regulatory proteins respond to?
A
environmental changes (food)
5
Q
What are repressors?
A
negative control over transcription
6
Q
What are inducers?
A
positive control over transcription
7
Q
What produces enzymes only when lactose is present?
A
lac operon
8
Q
What does gene control begin with?
A
embryonic development
9
Q
What is cellular differentiation?
A
cells become specialized
10
Q
Cells have the same what and difference in what?
A
same genome
differences in gene expression
