Introduction to Medical Virology: Understanding Viruses

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GenuineNovaculite7213
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27 Questions

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

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

(+) polarity RNA viruses

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

Nucleus

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

Viral genome synthesis

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

  • Synthesis of late proteins

How do enveloped viruses leave the cell?

  • By budding from various host membranes

Where do DNA virus recovery occur?

  • Nucleus

Which of the following best describes a virus?

An acellular organism that depends on the host's metabolism

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

To replicate using the host's metabolism

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

They are completely inert outside living cells

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

The ability of the virus to enter the host cell

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

Viruses show a high degree of specificity to host cells

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

Complete dependence for replication and energy

Why are viruses classified as obligate intracellular parasites?

As they are completely dependent on cellular metabolism and energy

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

The presence of specific entry receptors on the host cell membrane

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

To ensure viral spread and infection within the host

What distinguishes viruses from cellular microorganisms?

The lack of their own metabolism and energy production

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

Capsid

What is the main function of a virion?

To transport the viral genome into the host cell

Which type of virus has a segmented genome?

RNA viruses

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

Length of the nucleic acid

Which type of symmetry is exhibited by large viruses with a diameter of 200-300 nm?

Complex symmetry

Where does the envelope of enveloped viruses originate from?

All of the above

What is the main structure that forms the envelope of enveloped viruses?

Lipid layer

This quiz provides an introduction to medical virology, focusing on the nature of viruses, their genetic makeup, and their dependence on host cells for metabolism and replication. It covers the basic characteristics of viruses and their classification as acellular organisms.

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