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..
1. 1  Cell membranes are a lipid bilayer-The hydrophobic end of the lipid molecules is directed towards the interior of the membrane and the hydrophilic end of the lipid molecules is directed towards the inside or outside of the cell. ( 2 fig. 3  10-6ab, Lodish) .he Lipid Bilayer Membrane Cell membranes are a lipid bilayer-The hydrophobic end of the lipid molecules is directed towards the interior of the membrane and the hydrophilic end of the lipid molecules is directed towards the inside or outside of the cell.