With the aid of a diagram, explain the principles of gel filtration chromatography.

List the following reagents in the order in which they are added to an ELISA: secondary antibody, bodily fluid sample, enzyme substrate, primary antibody O Scondary antibody, bodily fluid sample, primary antibody, enzyme substrate O Enzyme substrate, primary antibody, secondary antibody, bodily fluid sample Bodily fluid sample, enzyme substrate, secondary antibody, primary antibody Bodily fluid sample, primary antibody, secondary antibody, enzyme substrate

Biochemical tests such as the fermentation test can be used when unknown bacterial cells are identified. true or false?

Porous dialysis tubing is used to create a "model cell" containing glucose and albumin, a protein. This "cell" is placed into a beaker containing water and Biuret reagent. Initially the "cell" is colorless and the beaker is light blue. At the end of the experiment, the "cell" is light purple and the beaker is still light blue. What accounts for the color change observed? O Biuret reagent entered the cell and reacted with protein. Glucose exited the cell and reacted with Biuret reagent. Biuret reagent entered the cell and reacted with glucose. O Protein exited the cell and reacted with Biuret reagent.