If the actual cost is higher than the fixed cost, the cost variance is unfavorable. For example, your standard fixed overhead cost is $3 per unit. If your actual fixed overhead cost is $4 per unit, you have an unfavorable variance of $1.
The major histocompatibility complex and its functions. The function of MHC molecules is to bind peptide fragments derived from pathogens and display them on the cell surface for recognition by the appropriate T cells.
Explain the role of the major histocompatibility complex to T cell receptor binding. MHC molecules bind with a fragment of protein antigen within the cell and bring it to the cell surgace allowing a nearby T cell to detect the antigen and bind to it.