What are the 7 different groups of viruses?

Published by Charlie Davidson on

What are the 7 different groups of viruses?

Viruses can be placed in one of the seven following groups:

  • I: dsDNA viruses (e.g. Adenoviruses, Herpesviruses, Poxviruses)
  • II: ssDNA viruses (+)sense DNA (e.g. Parvoviruses)
  • III: dsRNA viruses (e.g. Reoviruses)
  • IV: (+)ssRNA viruses (+)sense RNA (e.g. Picornaviruses, Togaviruses)

What are the morphology of virus?

Virus morphology includes the size and shape of the virion, number of capsomers, symmetry of capsid and presence or absence of envelope, all of which can be determined using EM.

What are the 3 structures of a virus?

Viruses are further classified into families and genera based on three structural considerations: 1) the type and size of their nucleic acid, 2) the size and shape of the capsid, and 3) whether they have a lipid envelope surrounding the nucleocapsid (the capsid enclosed nucleic acid).

What are the 3 types of viruses biology?

The Three Categories of Viruses The cylindrical helical virus type is associated with the tobacco mosaic virus. Envelope viruses, such as influenza and HIV come covered in a protective lipid envelope. Most animal viruses are classified as icosahedral and are nearly spherical in shape.

What are the 6 classes of viruses?

Overview

  • Group I: double-stranded DNA viruses.
  • Group II: single-stranded DNA viruses.
  • Group III: double-stranded RNA viruses.
  • Group IV: positive sense single-stranded RNA viruses.
  • Group V: negative sense single-stranded RNA viruses.
  • Group VI: single-stranded RNA viruses with a DNA intermediate in their life cycle.

What are the 4 shapes of viruses?

Viruses are classified into four groups based on shape: filamentous, isometric (or icosahedral), enveloped, and head and tail.

What are 5 characteristics of a virus?

These are: 1) attachment; 2) penetration; 3) uncoating; 4) replication; 5) assembly; 6)release. As shown in , the virus must first attach itself to the host cell.

What three characteristics do viruses have?

Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.

What are the features of virus?

Non-living.

  • Non-cellular.
  • Contain a protein coat called the capsid.
  • Have a nucleic acid containing either DNA or RNA.
  • Capable of reproducing only when inside a HOST cell.
  • How do you classify a virus?

    Viruses are classified into four groups based on shape: filamentous, isometric (or icosahedral), enveloped, and head and tail. Many viruses attach to their host cells to facilitate penetration of the cell membrane, allowing their replication inside the cell.

    Categories: Blog