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 is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input.Unlike active transport, it does not require an input of cellular energy because it is instead driven by the growth of entropy of the system.assive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input.