From what other environments might E. coli bacteriophages be readily isolated?

Q: What is the natural habitat of E.coli?

A: In this question we will discuss about the natural habitat of E.coli.

Q: Discuss the establishment and maintenance of lysogeny in bacteriophage lamb

A: Lytic and lysogenic cycles are viral multiplication methods in which the former is much more common…

Q: What method is used by bacteriophages to release from the infected host cell? O 1) budding O 2)…

A: Answer is option 4.)lysis.

Q: How was the process of bacterial transformation discovered?

A: The reception of bare DNA fragments from the external environment and the manifestation of that…

Q: How do we know that intergenic exchange occurs in bacteriophages?

A: Bacteriophages are the type of viruses which infects the bacteria and have a DNA or RNA molecule in…

Q: What is conjugation? What role do plasmids play in conjugation?

A: Bacteria are the most important microorganisms to the food processor. Some bacteria are beneficial…

Q: Is natural bacterial transformation efficient?

A: Bacterial transformation is the process by which a bacterium takes up naked DNA from the…

Q: All of the following apply to Luria and Delbruck’s 1943 study of mutation rates in E. Coli and T1…

A: The Luria-Delbruck Experiment ---This experiment performed in 1943  demonstrate that in bacteria…

Q: There are plenty of different phages that will kill Pseudomonas aeruginosa bacteria.  Why did the…

A: Note:- Sorry, as per the honor code, referring to external citations is not allowed. However, we…

Q: How did Anton de Bary prove that a microbe was the cause of the Irish Potato Famine? Why did other…

A: Irish potato famine is a type of infection found on potato which is otherwise called a potato blight…

Q: Explain how bacterial conjugation differs fromtransformation and transduction.

A: In genetics, the bacterial conjugation is defined as the process which involves in the transfer of…

Q: How are bacteria-free phage particles obtained?

A: In the Transduction mechanism, the gene transfer from one bacteria to another occurs through a…

Q: How do we know that intergenic exchange occurs in bacteriophages?

A: Intergenic interaction is a process which is basically shown by the polygenes. This type of…

Q: Which molecules does E. coli not have to synthesize when grown in LB, compared to minimal media?…

A:

Q: S. aureus is gram positive. What differences in strains might account for differences in phage…

A: Bacteria are microscopic single-celled organisms that thrive in diverse environmental conditions.…

Q: An enzyme used to synthesize the amino acid tryptophan is most likelya) constitutive.…

A: Answer is c.) repressible.

Q: How do bacteriocins benefit bacteria in their natural habitat?

A: Bacteriocins are the protein substances, which are toxic to the other closely related strains of the…

Q: DNA Ligase, used in recombinant DNA technology is obtained froma) E.coli onlyb) E.coli and also…

A: Recombinant DNA  (rDNA) technology:  It’s a process in which we genetically modify or alter the…

Q: How many bacteriophage particles were isolated from a single plaque? Howmany different strains of…

A: Bacteriophages, which are mainly infected bacteria are going through the lytic or the lysogenic…

Q: Should the DNA sequence encoding human pathogens be freely available online? and Why?

A: DNA sequencing is technique which helps in identification of exact sequence of bases (A,C,G and T)…

Q: Which of the following statements regarding transduction is FALSE? A) transduction reduces genetic…

A: A virus moves its genetic information from one bacterium to another through a process called…

Q: Scientists at the SEA Phages lab were asked to find a phage that might infect a strain of M.…

A: Bacteriophages or phages are the viruses that infect bacterias and destroys the host bacterial cell.…

Q: E. coli

A: Bacterial Strain LE392 is used for both genomic and cDNA cloning. LE392 lacks the E. coli K…

Q: What advantage do quorum-sensing systems confer onbacterial cells?

A: Quorum sensing is a way of communication between cells. It is a signaling pathway. Quorum sensing is…

Q: After sequencing E.coli ROAR340 strain and using Silico Clermont Phylotyper tools show that is it…

A: Escherichia coli, also known as E. coli, is a gram-negative, facultative anaerobic, rod-shaped…

Q: Describe the experiment done by Frederick Griffith in 1928, where the non-lethal (rough) strain of…

A: Frederick Griffith  was a British bacteriologist.He was a physician, pathologist and a…

Q: Site directed mutagenesis facilitated research ona) Carbohydratesb) Proteinsc) Lipidsd) Fats

A: Site-directed mutagenesis is a technique of molecular biology that involves the induction of…

Q: What is the purpose of Agrobacterium cell duplication?

A: Agrobacterium tumefaciens is a pathogenic bacteria that usually causes crown gall disease in plants.…

Q: 16. Which of the following methods may introduce foreign DNA into a recipient? A) transduction B)…

A: A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell's…

Q: A4-month-old infant had been running a moderate fever for36 hours, and a nervous mother made a call…

A: Antibiotics are products produced naturally by microbes or semi-synthetically industrially which…

Q: A4-month-old infant had been running a moderate fever for36 hours, and a nervous mother made a call…

A: Antibiotics are antimicrobial agents in the form of chemical or drugs that are used to treat an…

Q: Synthesis of new bacteriophages in a bacterial host involves the use of   a.) Host cell encoded…

A: Phages that only infect bacteria are known as bacteriophages. Phage are available in a wide range of…

Q: Which of the following images shows a phage with a Siphoviridae morphotype? A) B) C)

A: Siphoviridae viruses are double stranded DNA viruses which belong to order Caudovirales. this family…

Q: To which phage types was this strain of S. aureus susceptible?

A: Staphylococcus aureus is a Gram-positive bacterium. It has a cocci morphology and forms grape-like…

Q: Describe in general terms how bacteriophage lambda regulates the switch between lytic and lysogenic…

A: Bacteriophages are very small viral particles that infect bacterial host cells. The replication of…

Q: Why must the top agar be supplemented with MgSo4 A) it is required to induce the production of cro…

A: The preparation of top agar is done by taking a low concentration of agar as compared to normal…

Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.