Question
Biology Question on excretory products and their elimination
Which of the following is true for excretion in humans?
A
Glucose and amino acids are reabsorbed in PCT by simple diffusion.
B
DCT is impermeable to water.
C
On an average, 25-30 gm of urea is excreted out per day.
D
Maximum reabsorption occurs in the loop of Henle.
Answer
On an average, 25-30 gm of urea is excreted out per day.
Explanation
Solution
Glucose and amino acids are reabsorbed in PCT by secondary active transport. Water, sodium and chloride ions are reabsorbed in DCT. It is permeable to water. Maximum reabsorption takes place within the PCT. Humans are ureotelic and excrete out 25-30 gm of urea per day.