Podcast
Questions and Answers
What is one reason why gene expression in bacteria needs to be controlled precisely?
What is one reason why gene expression in bacteria needs to be controlled precisely?
- To decrease the ATP consumption
- To prevent wasteful synthesis of unnecessary materials (correct)
- To promote adaptation to a wide range of environments
- To increase the synthesis of structural proteins
How many genes are typically needed by bacteria at any one time?
How many genes are typically needed by bacteria at any one time?
- 500-700
- 700-9000
- 1000-2000
- 600-800 (correct)
Which of the following bacteria has a much higher number of proteins that regulate its response to different stimuli?
Which of the following bacteria has a much higher number of proteins that regulate its response to different stimuli?
- Helicobacter pylori
- Escherichia coli
- Pseudomonas aeruginosa (correct)
- Staphylococcus aureus
What kind of proteins does a bacterial cell need to produce at very high levels?
What kind of proteins does a bacterial cell need to produce at very high levels?
What is the approximate ATP consumption per protein during gene expression in bacteria?
What is the approximate ATP consumption per protein during gene expression in bacteria?
Why does Helicobacter pylori have a small number of proteins that regulate its response to different stimuli?
Why does Helicobacter pylori have a small number of proteins that regulate its response to different stimuli?
What is the main factor influencing the expression of individual genes in bacteria?
What is the main factor influencing the expression of individual genes in bacteria?
Which regulatory factor determines the amount of specific mRNA produced in a cell?
Which regulatory factor determines the amount of specific mRNA produced in a cell?
Which post-translational effect is especially important as a mechanism for regulating the function of specific proteins?
Which post-translational effect is especially important as a mechanism for regulating the function of specific proteins?
What is necessary for the conversion of polypeptide chains into a biologically active conformation?
What is necessary for the conversion of polypeptide chains into a biologically active conformation?
What is likely to be higher when there are several copies of a gene?
What is likely to be higher when there are several copies of a gene?
Which factor mainly determines the efficiency with which the gene is transcribed in bacteria?
Which factor mainly determines the efficiency with which the gene is transcribed in bacteria?
What affects the rate of translation mainly in bacteria?
What affects the rate of translation mainly in bacteria?
What is important for the metabolism and physiology of a cell?
What is important for the metabolism and physiology of a cell?
Which type of RNA has considerably more stability due to a high degree of secondary structure?
Which type of RNA has considerably more stability due to a high degree of secondary structure?
When does gene copy number become important for controlling the normal metabolic activities in a bacterial cell?
When does gene copy number become important for controlling the normal metabolic activities in a bacterial cell?
