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..
Lipid bilayer. The lipid bilayer is used to describe the membranes of animal and plant cells in which the organization of the phospholipids are essential in cell membrane functions, such as the selective permeability to ions and molecules between the cell and the environment.