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..
Some viruses are enveloped, meaning that the capsid is coated with a lipid membrane known as the viral envelope. The envelope is got by the capsid from an intracellular membrane in the virus' host; such as the inner nuclear membrane, the golgi membrane, or the cell's outer membrane.ome viruses are enveloped, meaning that the capsid is coated with a lipid membrane known as the viral envelope. The envelope is got by the capsid from an intracellular membrane in the virus' host; such as the inner nuclear membrane, the golgi membrane, or the cell's outer membrane.