2.4.2 Gene Organization and Expression Flashcards Preview

Infectious Disease > 2.4.2 Gene Organization and Expression > Flashcards

Flashcards in 2.4.2 Gene Organization and Expression Deck (18)
Loading flashcards...
1

What are the characteristics of bacterial chromosomes and plasmids?

2

Why are bacterial genome structures considered to be heterogeneous?

3

What is horizontal gene transfer?

Acquiring DNA from environment

4

Describe the characteristics of pathogenecity islands.

5

Describe the process of replication for a bacterial chromosome.

6

Describe the replication of plasmids.

7

Describe the organization of Genes in bacteria.

8

What are the two types of regulators in bacterial gene regulation?

9

Describe the negative regulation of anabolic and catabolic operons.

10

What occurs to the lac operon in the presence of lactose?

 An inducer molecule binds to the repressor protein

Repressor can no longer bind to operator

Transcription occurs

11

Describe the negative regulation of the lac operon.

12

Describe the positive regulation of the lac operon by cAMP

13

Describe the activity of the lac operon at various concentrations of glucose and lactose.

14

Describe the Trp operon as an example of attenuation.

15

Describe the role of tRNA in the Trp operon.

16

Describe the importance to sensing the environment in the two component regulatory system.

17

Give an example of environment sensing.

18

What is quorum sensing.