Which major process occurs in the given structure?

The glomerular filtrate contains . . . . . . .

The glomerular filtrate contains

Which of the following defines the net filtration pressure $(NFP)$?

Which of the following statements are $INCORRECT$?
$i$. Glomerular capillaries are extremely thin-walled.
$ii$. Diameter of afferent arteriole is greater than that of efferent arteriole.
$iii$. Glomerular filtrate is deproteinised plasma and is acidic in nature.
$iv$. $PCT$ cells reabsorb low threshold substances like sulphates,nitrates actively against concentration gradient.
Select the correct option from given.

The composition of glomerular filtrate and urine is not the same. Comment.