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.
Passive transport further helps in maintaining the dynamic equilibrium of gases, waste, water etc. No net equilibrium is maintained after the process of diffusion or osmosis. Key Differences. Active transport requires energy in the form of ATM while passive transport does not. In active transport molecules move against the concentration gradient but in passive transport, molecules move from high to low concentration.. Types of active transport are endocytosis, exocytosis.