Question

the following prompts may be helpful as you analyze the data.

1. which solute(s) (salts, glucose, or urea) stay the same in the blood both in and outside of the kidney regardless of the water intake of the person exercising? why do you think this is the case?

Explanation:

The body tightly regulates blood glucose levels to maintain energy supply for cells (especially brain cells). The kidneys reabsorb all filtered glucose back into the blood via active transport mechanisms (like SGLT and GLUT transporters) to ensure glucose isn’t lost in urine, and this regulation is independent of water intake changes during exercise. Salts (electrolytes) can change due to fluid shifts/sweating, and urea (a waste) can vary with water - related changes in urine concentration.

Answer:

Glucose stays the same in the blood both in and outside of the kidney regardless of water intake during exercise.