MCQ ON FUNCTION OF TUBULES class 11 for NEET | FUNCTION OF TUBULES class 11 | MCQ FUNCTION OF TUBULES with Answer | Check the below NCERT MCQ question for class 11 Biology based on the with Answers.
MCQ on FUNCTION OF TUBULES class 11 Biology with answers were prepared based on the latest pattern.We have provided class 11 Biology MCQs question with Answers to help students understand the concept very well.
MCQ ON FUNCTION OF TUBULES is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM/ KVS PGT BIOLOGY / NVS PGT BIOLOGY EXAM 2023-2024 ,2025
INTRODUCTION:-
FUNCTION OF TUBULES :-
PROXIMAL COONVULATED TUBULE is lined by simple cuboidal brush border epithelium which increases the surface for reabsorption. Nearly old essential nutrients and 70 to 80% of electrolytes in water are reabsorbed by this segment.
Pct also helps to maintain the pH and ionic balance of the body fluid by selective secretion of hydrogen ions ammonia and potassium ions into the field trade and by the absorption of bicarbonate from it.
Loop of Henle :- reabsorption in this segment is minimum.
This region plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid.
The descending limb of loop of Henle is permeable to water and almost impermeable to electrolytes.
This concentrates the filtrate as it moves down.
The ascending limb is impermeable to water but allows transport of electrolytes actively or passively.
DISTAL CONVOLUTED TUBULE:-
It helps in the conditional reabsorption of sodium ions and and water takes place in the segment. The DCT is also capable of reabsorption of bicarbonate ions and selective secretion of hydrogen and potassium ions.
Collecting duct:- this long dog extends from the cortex of the kidney to the inner parts of the medulla. Large amounts of water could be reabsorbed from this region to produce a concentrated urine. This sigment allows passage of small amounts of India into the medullary interstitium to keep up the osmolarity.
Urine formation involves three main processes namely glomerular filtration, reabservation and secretion, that takes place in different parts of the nephron.
The first step in urine formation is the filtration of blood, which is carried out by the Glomerular and is called glomerulus filtration.
On in average 1100 to 1200 ml of blood is filtered by the kidney per minute which constitution roughly 1/ 5 of the blood pump out by each ventricle of the heart in a minute. The glomerular capillary blood pressure causes filtration of blood through three layers the endothelium of glomerular blood vessels, the epithelial of bowman’s capsule and basement membrane between these two layers.
Bloody is filtered so finally through the basement membrane that allow almost all the constituent of the plasma except the protein pass on to the lumen of the bowman’s capsules. Therefore it is considered as a process of ultra filtration.
The amount of filtrate formed by the kidney per minute is called Glomerular filtration rate.
GFR in healthy individual is approximately 125 ml per minute that is 180 liters per day.
The kidney have built in mechanism for a regulation of glomerular filtration rate.
One such efficient mechanism is carried out by justa glomerular apparatus.
JGA is a special sensitive region formed by cellular modification in the DCT.
MCQ FUNCTION OF TUBULES class 11 for NEET/KVS PGT BIOLOGY / NVS PGT BIOLOGY EXAM 2023-2024,2025
1. Which is the lined by the simple cuboidal brush border epithelium which increases the surface area for reabsorption ?
(a) PCT
(b) reabsorption
(c) secretion
(d) all the above
Ans (a) PCT
2. Which is the function of PCT ?
(a) maintain the pH
(b) maintain ionic balance of the body fluid
(c) selective secretion of hydrogen ions
(d) all the above
Ans. (d) all the above
3. Which segment reabsorbed all essential nutrients and 70 to 80% of electrolytes and water ?
(a) PCT
(b) DCT
(c) GFR
(d) CD
Ans. (a) PCT
4. Reabsorption in this segment is minimum.
(a) PCT
(b) CD
(c) DCT
(d) Henle’s loop
Ans.(d) Henle’s loop
5. Which segment of renal tribule play the significant role in the maintenance of high osmolarity of medullary in interstitial fluid?
(a) PCT
(b) DCT
(c) Henle’ sloop
(d) GFR
Ans.(c) Henle’s loop
6. It is permeable to water but almost impermeable to electrolytes.
(a) ultra filtration
(b) glomerular filtration
(c) descending limb of loop of Henle
(d) ascending limb of loop of Henle
Ans.(c) descending limb of loop of Henle
7. Which is impermeable to water but allows transport of electrolytes actively of passively
(a) glomerular filtration rate
(b) the descending limb of loop of Henle
(c) ascending limb of loop of Henle
(d) ultrafitration
Ans.(c) ascending limb of loop of Henle
8. Conditional reabsorption of sodium ion and water takes place in this segment
(a) PCT
(b) DCT
(c) loop of Henle
(d) collecting duct
Ans.(b) DCT
9. Which is capable of reabsorption of bicarbonate ion and selective secretion of hydrogen and potassium ions?
(a) PCT
(b) DCT
(c) JGA
(d) UFR
Ans. (b) DCT
10. Which part of segment of renal tubule maintain the pH and sodium potassium balance in the blood?
(a) PCT
(b) DCT
(c) GFR
(d) Bowman’s capsule
Ans. (b) DCT
11. Which is the long duct extends from cortex of the kidney to the inner parts of medulla?
(a) Collecting duct
(b) PCT
(c) DCT
(d) rennin
Ans.(a) Collecting duct
12. Large amount of water could be reabsorbed from this region to produce a concentrate urine
a) vasa recta
b) Henle loop
c) renal tubule
(d) collecting duct
Ans . (d) collecting duct
13. Which place a key roll in maintenance of PH and ionic balance of blood by selective secretion of hydrogen ion and potassium ions
(a) ultrafiltration
(b) secretion
(c) reabsorption
(d) collecting duct
Ans.(d) collecting duct
14. In humans the excretory system consists of
(a) a pair of kidneys
(b) a pairs of ureters
(c) urinary bladder, urethra
(d) all the above
Ans. (d) all the above
15. Kidney are which shaped structure
(a) longitudinal
(b) oval shape
(c) bean shaped structure
(d) cylindrical
Ans.(c) bean shaped structure
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16. Inner to the hilum is a broad funnel shaped space called the
(a) renal pelvis
(b) reabsorption
(c) tubular secretion
(d) passive transport
Ans.(a) renal pelvis
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