See also. 1  Concept inventory. 2  Constructive alignment. 3  Educational assessment. 4  Ipsative assessment. 5  Norm-referenced assessment. 6  Psychometrics. 7  Standardized test.
Enveloped viruses have a lipid-based membrane surrounding the protein capsid. This envelope is partly composed of the cell membrane within which the virus replicated, and it contains proteins and carbohydrates. Some of the proteins are from the host cell and some are from the virus..
Terminology â¢ Capsid (syn: coat): regular, shell-like structure composed of aggregated protein subunits which surrounds the viral nucleic acidâ¢â¢ Nucleocapsid (syn: core): viral nucleic acid enclosed by a capsidprotein coatâ¢ Envelope (syn: viral membrane): lipid bylayer containing viral glycoproteins.