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 Phospholipid Bilayer. Cells are encased by. membranes composed of a bilayer of phospholipid. The Lipid Bilayer Is Fluid. Because individual. phospholipid molecules do not bind to one another, the lipid. bilayer of membranes is a fluid. 6.2 Proteins embedded within the plasma membrane.