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..
The cell membrane (or plasma membrane) is the âskinâ that surrounds the entire cell. This porous membrane is made of a double layer of phospholipids (phospholipid. bilayer). The membrane allows the passage of nonpolar and small. uncharged polar molecules via diffusion, while other larger polar.