Which of the followings are characteristics of all living organisms? a. breathing, photosynthesis and transpiration
b. circulation, excretion and nutrition
c. digestion, growth and movement
d. respiration, reproduction and sensitivity

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.