The advantages that retroviruses gain by using reverse transcriptase. Introduction: Retrovirus is defined as a single-stranded positive sense RNA virus with a DNA intermediate that act as an obligate parasite and targets host cell. When it is inside its host organisms, they use its reverse transcriptase enzyme to produce DNA from its DNA genome.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 13, Problem 11CT

Summary Introduction

To determine:

The advantages that retroviruses gain by using reverse transcriptase.

Introduction:

Retrovirus is defined as a single-stranded positive sense RNA virus with a DNA intermediate that act as an obligate parasite and targets host cell. When it is inside its host organisms, they use its reverse transcriptase enzyme to produce DNA from its DNA genome.

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Although many +ssRNA viruses use their genomr directly as mRNA retroviruses do not. instead their +RNA is transcribed into a DNA by a resverse transcriptase. what advantages do retroviruses gained by using reserve transcriptase?

Some retroviruses that have a wide host range have been developed for use in treatment of diseases or syndromes. These viruses do not result in a productive infection because they lack critical genes for viral replication, but they do carry DNA sequences that allow them to be packaged into infectious particles. Once in the host cell the viral DNA is released and integrates into the cell's genome. The advantage to this strategy is that the delivery of the DNA is very efficient. What is one possible problem of using a virus that can integrate into the human nuclear genome? Multiple Choice The virus carries genes that will interfere with host cell activities. The viral DNA sequences could still cause a disease. Since the viral DNA sequences no longer contain essential genes for viral replication the host cell may not be able to replicate either. The integration could disrupt an essential gene or genes.

Coronaviruses have a positive-sense single stranded RNA genome. a.) What is the genome replication strategy of this category of viruses? b.) How do you think this feature affects the stability of the viral genome? (hint use figure below) Mutation rates in different types of viruses. Estimates obtained for viruses belonging to the major indicated groups are shown as a function of genome size. This reveals an effect of genetic material (RNA/DNA) and genome size on viral mutation rates.

Answer 2

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 13, Problem 11CT

Summary Introduction

To determine:

The advantages that retroviruses gain by using reverse transcriptase.

Introduction:

Retrovirus is defined as a single-stranded positive sense RNA virus with a DNA intermediate that act as an obligate parasite and targets host cell. When it is inside its host organisms, they use its reverse transcriptase enzyme to produce DNA from its DNA genome.

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Answer 3

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 13, Problem 11CT

Summary Introduction

To determine:

The advantages that retroviruses gain by using reverse transcriptase.

Introduction:

Retrovirus is defined as a single-stranded positive sense RNA virus with a DNA intermediate that act as an obligate parasite and targets host cell. When it is inside its host organisms, they use its reverse transcriptase enzyme to produce DNA from its DNA genome.

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Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 13, Problem 11CT

Summary Introduction