The Kidneys, Fluid and Electrolyte Balance, and Mechanisms of Urine Formation

Which of the following best describes the primary function of the glomerulus in the nephron?

Which process in the nephron is responsible for the selective movement of substances from the blood into the tubular fluid, often against a concentration gradient?

A patient has a glomerular filtration rate (GFR) of 120 mL/min. If the plasma concentration of a freely filtered substance is 1 mg/mL, what is the filtered load per minute? Use the formula $\text{Filtered Load} = \text{GFR} \times \text{Plasma Concentration}$.