For a one-sample multivariate test, the hypothesis is that the mean vector () is equal to a given vector (). The test statistic is Hotelling's T 2 : where n is the sample size, is the vector of column means and is a sample covariance matrix.
Remember these key points: 1  Cell membranes or plasma membranes consist of a phospholipid bilayer with proteins embedded in the membrane. 2  Most of the functions of plasma membranes are handled by the proteins. 3  This arrangement of proteins and phospholipids is often called the fluid mosaic model for a cell membrane.
Explain why the plasma membrane described as a fluid mosaic model. - The plasma membrane is described as a fluid mosaic model because its made up of a phospholipid bilayer, allowing it easily to bend and move along without breaking or ripping the membrane due to the hydrophobic and hydrophilic poles of the bilayer.