Explain how negative gene regulation is utilised in bacterial lactose metabolism. 5 marks!!!

Explain how negative gene regulation is utilised in bacterial lactose metabolism.

5 marks!!!

Expert Solution

gladiator answered 1 year ago

why is gene regulation important for bacterial cells what is the difference between positive and negative...

why is gene regulation important for bacterial cells what is the difference between positive and negative control. What is the difference between inducible and repressible operons

11. The lacZ gene, responsible for lactose metabolism is an inducible gene regulated by a repressor...

11. The lacZ gene, responsible for lactose metabolism is an inducible gene regulated by a repressor protein. Answer the following questions regarding how this gene is regulated (3 pts each) a. What is the default setting in reference to the expression of lacZ? b. What role does lacI play in regulating the system? c. What happens when the system is exposed to lactose? d. What happens after the cell digests the lactose supply

Explain whether the results on the effect of lactose reflect an adaptive mechanism of gene regulation....

Explain whether the results on the effect of lactose reflect an adaptive mechanism of gene regulation. Does it make biological sense for lactose to have this effect? Why? Is it adaptive for glucose to alter the ability of lactose to induce the enzymes needed for lactose breakdown? Explain.

What is the role of lac repressor molecule in bacterial gene regulation? Explain. Explain the term...

What is the role of lac repressor molecule in bacterial gene regulation? Explain. Explain the term disruptive selection in evolution giving a suitable example. What are sister chromatids? Which protein hold them together during cell division? What is the phenomenon of nondisjunction? What are the functions of topoisomerases and DNA polymerases in DNA replication? What are photosystems ? Where exactly the splitting of water and generation of oxygen occur during light dependent reaction of photosynthesis?

In gene regulation in bacteria lactose is required to turn on the cell and permease brings...

In gene regulation in bacteria lactose is required to turn on the cell and permease brings lactose into the cell,how does it work?

Bacterial operons & regulating metabolic pathways Two kinds of control: enzyme regulation vs. gene regulation. Why?...

Bacterial operons & regulating metabolic pathways Two kinds of control: enzyme regulation vs. gene regulation. Why? trp operon. How does the presence of tryptophan prevent the synthesis of more tryptophan (2 different ways)? lac operon. Compare & contrast with trp. Why are operons for catabolic and anabolic pathways regulated differently? Positive vs. negative gene regulation. Why would both be used for the same operon? AraC mechanism. Is AraC an inducer or a repressor?

1. Please describe negative control in terms of transcriptional regulation of gene expression? 2. Please explain...

1. Please describe negative control in terms of transcriptional regulation of gene expression? 2. Please explain the regulation of Trp operon when Trp-tRNA is available in the cell? 3. What are the classes of Transcription factors based on their regulatory responsibilities? Please explain if this distinction is absolute or not? 4. Please explain the mitochondrial protein synthesis by indicating the mitochondrial protein synthesis apparatus, the mitochondrial genetic code and so on? 5. Please explain the two hybrid assay? 5. Please...

Explain how gene regulation occurs using the lac operon as an example.

Explain how gene regulation occurs using the lac operon as an example

Make a diagram to explain how a human gene can be cloned into a bacterial plasmid....

Make a diagram to explain how a human gene can be cloned into a bacterial plasmid. You should represent the events that need to occur in order to: Clone the insulin gene into a bacterial plasmid, Transform the plasmid into E. coli Include definitions or descriptions of the following terms/components: Restriction enzyme(s) Ligase Plasmid DNA Human mRNA (the mRNA for insulin) Reverse transcriptase Transformation E. coli marker genes (an antibiotic resistance gene) Cloning vector

Question