Place the following in the most likely order for biosynthesis of a bacteriophage: (1) phage lysozyme; (2) mRNA; (3) DNA; (4) viral proteins; (5) DNA polymerase.
a. 5, 4, 3, 2, 1
b. 1, 2, 3, 4, 5
c. 5, 3, 4, 2, 1
d. 3, 5, 2, 4, 1
e. 2, 5, 3, 4, 1

Question

Place the following in the most likely order for biosynthesis of a bacteriophage: (1) phage lysozyme; (2) mRNA; (3) DNA; (4) viral proteins; (5) DNA polymerase.

a. 5, 4, 3, 2, 1

b. 1, 2, 3, 4, 5

c. 5, 3, 4, 2, 1

d. 3, 5, 2, 4, 1

e. 2, 5, 3, 4, 1

Accepted Answer

Hi, everybody. Let's take a look at the next question, which of the following events occurs only during the lysogenic pathway of bacteria, phages, a immediate lysis of the host cell. After viral attachment, B integration of viral DNA into the host genome, C release of viral progeny following viral replication or d production of viral proteins and assembly assembly of new Vons. So let's recall that bacteria phages have two pathways of reproducing themselves and infecting cells. And there's the lysogenic pathway versus the lytic pathway. And in that lysogenic pathway after the virus attaches to the cell and releases its DNA that DNA incorporates into the bacterial cell genome, it then gets replicated along with the host DNA. And it just continues along fairly peacefully. Uh Every, every time the cell divides and replicates the viral DNA S along with along for the ride versus the lytic pathway from the word lice in which the virus attaches, injects its DNA, new viruses that DNA just replicates new viruses are assembled. And when enough are assembled, the cell is laced or burst and they all flood out and go on to infect other cells. So cell or we'll say host cell is laced after viral reproduction and assembly. So with that in mind, let's evaluate our answer choices. We're looking for the event that occurs only during the lysogenic pathway and not analytic pathway. So shall I say immediate lysis of the host cell after viral attachment? Well, this actually occurs in neither pathway. The lytic pathway involves lysis lice excuse me, lysis of the host cell, but not until the virus has replicated itself and assembled new viruses. Then choice B integration of viral DNA into the host genome. This is only occurring in a lysogenic pathway in the lytic pathway that DNA remains separate from the host genome. Just to be thorough. We've got our answer choice, but we'll look at the remaining two choices. Choice C says release of viral progeny following viral replication. Well, this would be just the lytic pathway. Since in the lysogenic pathway, the viral progeny are not released immediately. They just, the DNA keeps on replicating. The capsid proteins are floating around. It's not until something clicks that cell, that virus back into the lytic pathway, that viral progeny get released from the cell. So choice C is not correct. And then finally, Joyce d production of viral proteins and assembly of new Vons. Well, this happens in both pathways obviously that there are in both cases production of viral proteins. Although we would say assembly of new Vons is followed by immediate release only in a lytic pathway in the lysogenic pathway, those viral particles remain dormant in the cells until something triggers that switch to the lytic pathway for them. So that's why twisty isn't correct. So again, the event that occurs only during the lysogenic pathway of bacteriophages is choice B integration of viral DNA into the host genome. See you in the next video.

Place the following in the most likely order for biosynthesis of a bacteriophage: (1) phage lysozyme; (2) mRNA; (3) DNA; (4) viral proteins; (5) DNA polymerase.
a. 5, 4, 3, 2, 1
b. 1, 2, 3, 4, 5
c. 5, 3, 4, 2, 1
d. 3, 5, 2, 4, 1
e. 2, 5, 3, 4, 1

Verified Solution

Key Concepts

Bacteriophage Life Cycle

Viral Replication and Transcription

Role of Phage Lysozyme

Place the following in the most likely order for biosynthesis of a bacteriophage: (1) phage lysozyme; (2) mRNA; (3) DNA; (4) viral proteins; (5) DNA polymerase.a. 5, 4, 3, 2, 1b. 1, 2, 3, 4, 5c. 5, 3, 4, 2, 1d. 3, 5, 2, 4, 1e. 2, 5, 3, 4, 1

Verified Solution

Key Concepts

Bacteriophage Life Cycle

Viral Replication and Transcription

Role of Phage Lysozyme

Place the following in the most likely order for biosynthesis of a bacteriophage: (1) phage lysozyme; (2) mRNA; (3) DNA; (4) viral proteins; (5) DNA polymerase.
a. 5, 4, 3, 2, 1
b. 1, 2, 3, 4, 5
c. 5, 3, 4, 2, 1
d. 3, 5, 2, 4, 1
e. 2, 5, 3, 4, 1