â¢ Kidney Disorders: Hematuria may also be caused by damage to the upper urinary tract or an infected kidney. â¢ Bladder and Kidney Cancer: The presence of blood in the urine might also indicate bladder cancer or kidney cancer. However, this is a more common concern in people older than 40 years of age.
Facilitated Diffusion. Facilitated Diffusion is another form of passive transport where many polar molecules diffuse with the help of integral proteins in the lipid bilayer. The two main types of this kind of transport are ion channels and gated channels.
Difference Between Active and Passive Transport. Main Difference â Active vs Passive Transport. Active and passive transport are two methods that transport molecules across the cell membrane. A cell membrane is a multi-task unit which gives structure to the cell while protecting the cytosolic content from the extracellular environment.