Question

10.
If a fructan compound is obtained from the roots of
Dahlia is injected into human blood, to which of the
following steps of urine formation will it be
subjected?
(1) Ultrafiltration
(2) Selective secretion
(3) Tubular reabsorption
(4) Tubular secretion
​

Answer 1

Ultrafiltration is the step of urine formation that it will be subjected to.

Explanation:

• The unwanted substances of kidney is filtered through glomerulus.
• The injection of inulin from the roots of Dalhia in the blood of humans gets excreted through the renal tube of kidney which takes place by filtration of glomerulus.
• It has been seen that inulin doesn’t get reabsorbed by the tube.
• This clearance of inulin initiates the clearance of waste substances from kidney and subjects the formation process of urine.
• It has been considered as the GFR marker.

Know more about ultrafiltration:

Explain ultrafiltration.

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Learn more about inulin:

What is inulin

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Answer 2

Answer:

Inulin is a polymer of fructose obtained from the roots of Dahlia.