AP BIOLOGY

Detailed explanation-1: -Reabsorption of useful substances from glomerular filtrate occurs in proximal convoluted tubule (PCT). PCT is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.

Detailed explanation-2: -Maximum reabsorption of useful substances from glomerular filtrate occurs in proximal convoluted tubule (PCT).

Detailed explanation-3: -The proximal tubule also completes the reabsorption of glucose, amino acids, and important anions, including phosphate and citrate, because it is the sole site of transport of these filtered solutes.

Detailed explanation-4: -Glucose, amino acids, NaCl and other essential salts are reabsorbed in the second step of urine formation i.e Tubular Reabsorption. These essential substances are filtered from blood in the first step called glomerular filtration and are reabsorbed as they are vital for body function.

Detailed explanation-5: -In the nephron, selective reabsorption occurs in the proximal convoluted tubule because it is highly permeable.