Arrange the level of cell organization from the simplest to the most complex, with 1 belng the simplest and 5 being the most complex.
1. 1
organism level
2. 2
cellular level
3. 3
tissue level
4. 4
system level
5. 5
organ level

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.