Introduction to Medical Virology: Understanding Viruses

Which type of RNA viruses have to synthesize mRNA to the host cell?

(-) polarity RNA viruses

Where do RNA viruses assemble?

Cytoplasm

In which stage the viral structure components, called capsid and peplomers are synthesized.

Synthesis of late proteins

How do non-enveloped viruses leave the cell?

By disrupting the cytoplasm membrane Signup and view all the answers

What are viruses that use their own RNA as mRNA called?

(+) polarity RNA viruses Signup and view all the answers

Where do protein building blocks of DNA viruses migrate to for recovery?

Nucleus Signup and view all the answers

In which stage of replication does the synthesis of replication enzymes occur?

Viral genome synthesis Signup and view all the answers

What is the term for the stage in which viral structure components, called capsid and peplomers, are synthesized?

<ul> <li>Synthesis of late proteins</li> </ul> Signup and view all the answers

How do enveloped viruses leave the cell?

<ul> <li>By budding from various host membranes</li> </ul> Signup and view all the answers

Where do DNA virus recovery occur?

<ul> <li>Nucleus</li> </ul> Signup and view all the answers

Which of the following best describes a virus?

An acellular organism that depends on the host's metabolism Signup and view all the answers

What is the primary reason why viruses must live in a host cell?

To replicate using the host's metabolism Signup and view all the answers

What is the main characteristic of viruses in terms of their metabolic activity outside living cells?

They are completely inert outside living cells Signup and view all the answers

What is the key factor affecting the diversity of hosts for viruses?

The ability of the virus to enter the host cell Signup and view all the answers

Which statement best describes the relationship between viruses and host cells?

Viruses show a high degree of specificity to host cells Signup and view all the answers

What is the nature of a virus's dependence on the host's metabolism?

Complete dependence for replication and energy Signup and view all the answers

Why are viruses classified as obligate intracellular parasites?

As they are completely dependent on cellular metabolism and energy Signup and view all the answers

What determines the ability of a virus to enter a host cell?

The presence of specific entry receptors on the host cell membrane Signup and view all the answers

What is the primary reason why viruses replicate inside a host cell?

To ensure viral spread and infection within the host Signup and view all the answers

What distinguishes viruses from cellular microorganisms?

The lack of their own metabolism and energy production Signup and view all the answers

Which structure of the virus allows naked viruses to attach to the host cell?

Capsid Signup and view all the answers

What is the main function of a virion?

To transport the viral genome into the host cell Signup and view all the answers

Which type of virus has a segmented genome?

RNA viruses Signup and view all the answers

What determines the length of the nucleocapsid in viruses with helical symmetry?

Length of the nucleic acid Signup and view all the answers