AP BIOLOGY

Detailed explanation-1: -A capsid is the protein shell of a virus, enclosing its genetic material. It consists of several oligomeric (repeating) structural subunits made of protein called protomers. The observable 3-dimensional morphological subunits, which may or may not correspond to individual proteins, are called capsomeres.

Detailed explanation-2: -(A) Virus capsids are composed of viral protein subunits that form structural units.

Detailed explanation-3: -The outer protein coat of a virus is known as the capsid. It consists of several oligomeric structural subunits made of a protein called protomers which cover the nucleic acid which is present in the virus and protects it when virus inserts itself into the host.

Detailed explanation-4: -The capsid is made up of subunits made up of proteins called capsomere. The capsomere encloses double-stranded DNA in it. There are approximately 2000 capsomeres located in the head of bacteriophage.

Detailed explanation-5: -The capsid enclosing nucleic acid is referred to as nucleocapsid, which can be considered as an infectious and functional virus. Envelope-In some viruses, the nucleocapsid is covered with another layer of proteins and fats called as glycoproteins.