Which of the following is not a constituent of urine?

Question

a. nitrogenous wastes

b. hormones

c. pigments

d.plasma proteins

Answer 1

d. plasma proteins

This is because your kidneys filter your blood and the filtered stuff goes into the urine to be excreted, but the glomerulus of the kidney is set so that large things like proteins  in your blood are not able to be filtered into the urine so that you keep them, b/c they are important, and not waste.

Answer 2

Think about what the kidney does, and that will give you your answer.