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

(N/A) $\Rightarrow$ Glomerular filtrate is formed by the process of ultrafiltration in the glomerulus. It contains a large amount of $H_{2}O$,glucose,amino acids,urea,uric acid,creatinine,$Na^{+}$,$K^{+}$,vitamins,and hormones.
- Urine is the final product formed after the processes of selective reabsorption and tubular secretion in the renal tubules.
- During these processes,essential substances like glucose,amino acids,and a significant portion of water and electrolytes are reabsorbed back into the blood,while additional wastes like ammonia and hydrogen ions are secreted into the filtrate.
- Consequently,the composition of urine is significantly different from that of the glomerular filtrate,as it is more concentrated and contains specific metabolic waste products.