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Virus Replication Introduction

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Questions and Answers

What is the characteristic of the genome of (+)ssRNA viruses?

It is similar to mRNA and can be immediately translated into proteins (correct)

It consists of a double-stranded RNA

It must be converted to positive sense RNA by RNA polymerase before translation

It is complementary to mRNA

Which of the following viruses have a broad host range?

Coronavirus

Rabies virus (correct)

Influenza virus

Smallpox virus

What is the first step in the viral replication cycle?

Uncoating

Attachment (correct)

Synthesis of viral genome

Penetration

What is the role of the host in viral replication?

To facilitate the replication of the virus (A) Signup and view all the answers

What determines the host range of a virus?

The specificity of the viral receptor (B) Signup and view all the answers

What is the term for the classification of viruses based on their genome type?

Viral classification (C) Signup and view all the answers

What is the primary mechanism of virus penetration into host cells for non-enveloped viruses?

Endocytosis (A) Signup and view all the answers

What is the term for the removal of the viral capsid to release the genome into the host cell?

Uncoating (B) Signup and view all the answers

Where do RNA viruses typically replicate in the host cell?

Cytoplasm (B) Signup and view all the answers

What is the term for the specificity of a virus to infect a particular host or range of hosts?

Host range (B) Signup and view all the answers

What is the function of cellular receptors in the process of viral infection?

To facilitate viral attachment and entry (C) Signup and view all the answers

What is the result of the uncoating process in the viral life cycle?

The release of the genome into the host cell (C) Signup and view all the answers

What is the stage of the virus life cycle where the virus becomes infectious?

Maturation (D) Signup and view all the answers

What is the primary purpose of virus cultivation?

To isolate and identify viruses in clinical samples (C) Signup and view all the answers

What type of viruses are typically released from the host cell by budding?

Evolved viruses (C) Signup and view all the answers

What is the process of packaging viral proteins with the newly replicated viral genome into new virions?

Assembly (C) Signup and view all the answers

What is the result of lysis in viral release?

The host cell dies (A) Signup and view all the answers

Why are viruses cultured in living cells?

Because they are obligate intracellular parasites (C) Signup and view all the answers