The following is a list of possible steps in B cell activation: i. activation ii. antigen presentation iii. produce memory cells, plasma cells and antibodies iv. sensitization v. costimulation The correct sequence of these steps is

Which of the following is a reason by protein catabolism is an impractical source for quick energy?

_____ – process where arterial smooth muscles contract and the diameter decreases, resistance increases, flow decreases

Water moves across the cell membrane by:

_____ – AV valves are closed, this chamber relaxes and fills with blood

_____ – process where arterial smooth muscles relax and the diameter increases, resistance decreases, flow increases

An antigen is a molecule produced by B-cells that stimulate an immune response. 

You want to make a 7-fold dilution of a sample with a total final volume of 1 mL in a new test tube. How much sample (in uL) would you add to a new tube? Round to the nearest tenth.

List four things that can be visualized in a urine sediment. [blank1] [blank2] [blank3] [blank4]

Which of the following containers would be appropriate for a urine specimen? Select all that apply.