Answer
The answer for #16 is transport maximum.
Work Step by Step
The transport maximum for glucose in serum is usually estimated at about 370 mg/min-- that is approximately a concentration of about 300 mg per ml. When glucose levels exceed threshold the excess glucose is excreted in the urine. The transport threshold and transport maximum depend on the levels of serum-glucose linked transporter proteins (SGLT2) in the proximal convoluted tubules (PCTs).