$GFR$ (Glomerular Filtration Rate) is the amount of filtrate formed by the kidney per

Layers between the glomerular and Bowman's capsule through which the filtration takes place are:
$I.$ Endothelium of the glomerular blood vessel
$II.$ Middle lamella
$III.$ Basement membrane between the endothelium of glomerular blood vessels and epithelium of the Bowman's capsule
$IV.$ Epithelium of the Bowman's capsule

In the ornithine cycle,the enzyme arginase breaks down arginine into:

Which one of the following statements in regard to the excretion by the human kidneys is correct?

The ultrafiltrate generated by the glomerulus contains all the constituents of blood plasma except:

The $GFR$ in a healthy individual is