BIOLOGICAL CLASSIFICATION
VIRUSES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
nucleic acid and a sheath
|
|
protein coat and tail fibers
|
|
protein coat and a base plate
|
|
protein coat and nucleic acid
|
Detailed explanation-1: -All viruses contain nucleic acid, either DNA or RNA (but not both), and a protein coat, which encases the nucleic acid. Some viruses are also enclosed by an envelope of fat and protein molecules. In its infective form, outside the cell, a virus particle is called a virion.
Detailed explanation-2: -All viruses have two basic components: a protective, protein coat, and inside this a strand, or two, of DNA or RNA (the genome) – the basic building blocks of life. Many viruses also have an outermost layer made up of a fatty membrane, called the envelope.
Detailed explanation-3: -Virus genomes All viruses have genetic material (a genome) made of nucleic acid. You, like all other cell-based life, use DNA as your genetic material. Viruses, on the other hand, may use either RNA or DNA, both of which are types of nucleic acid.
Detailed explanation-4: -A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat.
Detailed explanation-5: -A virus is made up of genetic material that is encased with a protective protein coat called the capsid. The capsid also helps the virus to infect host cells by binding to the host receptor proteins and releasing its genetic material.