286355
Through the thick segment of ascending limb of Henle's loop the
1 $\text{NaCl}$ can pass by active transport from filtrate to the interstitial fluid.
2 $\text{NaCl}$ can pass by passive transport into interstitial fluid.
3 $\text{NaCl}$ cannot pass from the filtrate to interstitial fluid.
4 Water can pass freely from filtrate to interstitial fluid.
Explanation:
(a) The ascending limb of loop of Henle has a thin and a thick segment. The thin ascending limb is found in the medulla of the kidney, and the thick ascending limb can be divided into a part that is in the renal medulla and a part that is in the renal cortex. Through the thick segment of ascending limb of loop of Henle, the $\text{NaCl}$ can pass by active transport from the filtrate to the interstitial fluid. The medullary ascending limb remains impermeable to water. Sodium, potassium $\left( {{\text{K}}^{+}} \right)$and chloride $\left( \text{C}{{\text{l}}^{-}} \right)$ions are reabsorbed by active transport. ${{\text{K}}^{+}}$is passively transported along its concentration gradient through a ${{\text{K}}^{+}}$leak channel in the apical aspect of the cells, back into the lumen of the ascending limb.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286356
In distal convoluted tubule of the nephrons:
2 Secretion of ${{\text{K}}^{+}}$ions does not require energy.
3 Water reabsorption requires energy.
4 Ammonia is secreted.
Explanation:
(a) Reabsorption of $\text{Na}+$ in the tubules is an active process.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286357
The reabsorption of water in the following part of nephron is obligatory
1 DCT.
2 PCT
3 Collecting tubule
4 All of these
Explanation:
(c) The water absorption from DCT and collecting tubule is facultative.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286358
The maximum amount of electrolytes and water $\left( 70-80\text{ }\!\!%\!\!\text{ } \right)$ from the glomerular filtrate is reabsorbed in which of the following part of the nephron?
1 Ascending limb loop of Henle
2 Distal convoluted tubule
3 Proximal convoluted tubule
4 Descending loop of Henle
Explanation:
(c) During glomerular filtration in kidneys, ultrafiltration of blood occurs as almost all the constituents of plasma except proteins pass onto the Bowman's capsule. Then nearly $99\text{ }\!\!%\!\!\text{ }$ of the filtrate is reabsorbed by renal tubules. Proximal convoluted tubûles shows maximum reabsorption and nearly all the essential nutrients and $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water are reabsorbed by this segments.
286355
Through the thick segment of ascending limb of Henle's loop the
1 $\text{NaCl}$ can pass by active transport from filtrate to the interstitial fluid.
2 $\text{NaCl}$ can pass by passive transport into interstitial fluid.
3 $\text{NaCl}$ cannot pass from the filtrate to interstitial fluid.
4 Water can pass freely from filtrate to interstitial fluid.
Explanation:
(a) The ascending limb of loop of Henle has a thin and a thick segment. The thin ascending limb is found in the medulla of the kidney, and the thick ascending limb can be divided into a part that is in the renal medulla and a part that is in the renal cortex. Through the thick segment of ascending limb of loop of Henle, the $\text{NaCl}$ can pass by active transport from the filtrate to the interstitial fluid. The medullary ascending limb remains impermeable to water. Sodium, potassium $\left( {{\text{K}}^{+}} \right)$and chloride $\left( \text{C}{{\text{l}}^{-}} \right)$ions are reabsorbed by active transport. ${{\text{K}}^{+}}$is passively transported along its concentration gradient through a ${{\text{K}}^{+}}$leak channel in the apical aspect of the cells, back into the lumen of the ascending limb.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286356
In distal convoluted tubule of the nephrons:
2 Secretion of ${{\text{K}}^{+}}$ions does not require energy.
3 Water reabsorption requires energy.
4 Ammonia is secreted.
Explanation:
(a) Reabsorption of $\text{Na}+$ in the tubules is an active process.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286357
The reabsorption of water in the following part of nephron is obligatory
1 DCT.
2 PCT
3 Collecting tubule
4 All of these
Explanation:
(c) The water absorption from DCT and collecting tubule is facultative.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286358
The maximum amount of electrolytes and water $\left( 70-80\text{ }\!\!%\!\!\text{ } \right)$ from the glomerular filtrate is reabsorbed in which of the following part of the nephron?
1 Ascending limb loop of Henle
2 Distal convoluted tubule
3 Proximal convoluted tubule
4 Descending loop of Henle
Explanation:
(c) During glomerular filtration in kidneys, ultrafiltration of blood occurs as almost all the constituents of plasma except proteins pass onto the Bowman's capsule. Then nearly $99\text{ }\!\!%\!\!\text{ }$ of the filtrate is reabsorbed by renal tubules. Proximal convoluted tubûles shows maximum reabsorption and nearly all the essential nutrients and $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water are reabsorbed by this segments.
286355
Through the thick segment of ascending limb of Henle's loop the
1 $\text{NaCl}$ can pass by active transport from filtrate to the interstitial fluid.
2 $\text{NaCl}$ can pass by passive transport into interstitial fluid.
3 $\text{NaCl}$ cannot pass from the filtrate to interstitial fluid.
4 Water can pass freely from filtrate to interstitial fluid.
Explanation:
(a) The ascending limb of loop of Henle has a thin and a thick segment. The thin ascending limb is found in the medulla of the kidney, and the thick ascending limb can be divided into a part that is in the renal medulla and a part that is in the renal cortex. Through the thick segment of ascending limb of loop of Henle, the $\text{NaCl}$ can pass by active transport from the filtrate to the interstitial fluid. The medullary ascending limb remains impermeable to water. Sodium, potassium $\left( {{\text{K}}^{+}} \right)$and chloride $\left( \text{C}{{\text{l}}^{-}} \right)$ions are reabsorbed by active transport. ${{\text{K}}^{+}}$is passively transported along its concentration gradient through a ${{\text{K}}^{+}}$leak channel in the apical aspect of the cells, back into the lumen of the ascending limb.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286356
In distal convoluted tubule of the nephrons:
2 Secretion of ${{\text{K}}^{+}}$ions does not require energy.
3 Water reabsorption requires energy.
4 Ammonia is secreted.
Explanation:
(a) Reabsorption of $\text{Na}+$ in the tubules is an active process.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286357
The reabsorption of water in the following part of nephron is obligatory
1 DCT.
2 PCT
3 Collecting tubule
4 All of these
Explanation:
(c) The water absorption from DCT and collecting tubule is facultative.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286358
The maximum amount of electrolytes and water $\left( 70-80\text{ }\!\!%\!\!\text{ } \right)$ from the glomerular filtrate is reabsorbed in which of the following part of the nephron?
1 Ascending limb loop of Henle
2 Distal convoluted tubule
3 Proximal convoluted tubule
4 Descending loop of Henle
Explanation:
(c) During glomerular filtration in kidneys, ultrafiltration of blood occurs as almost all the constituents of plasma except proteins pass onto the Bowman's capsule. Then nearly $99\text{ }\!\!%\!\!\text{ }$ of the filtrate is reabsorbed by renal tubules. Proximal convoluted tubûles shows maximum reabsorption and nearly all the essential nutrients and $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water are reabsorbed by this segments.
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Excretory Products and Their Elimination(NCERT)
286355
Through the thick segment of ascending limb of Henle's loop the
1 $\text{NaCl}$ can pass by active transport from filtrate to the interstitial fluid.
2 $\text{NaCl}$ can pass by passive transport into interstitial fluid.
3 $\text{NaCl}$ cannot pass from the filtrate to interstitial fluid.
4 Water can pass freely from filtrate to interstitial fluid.
Explanation:
(a) The ascending limb of loop of Henle has a thin and a thick segment. The thin ascending limb is found in the medulla of the kidney, and the thick ascending limb can be divided into a part that is in the renal medulla and a part that is in the renal cortex. Through the thick segment of ascending limb of loop of Henle, the $\text{NaCl}$ can pass by active transport from the filtrate to the interstitial fluid. The medullary ascending limb remains impermeable to water. Sodium, potassium $\left( {{\text{K}}^{+}} \right)$and chloride $\left( \text{C}{{\text{l}}^{-}} \right)$ions are reabsorbed by active transport. ${{\text{K}}^{+}}$is passively transported along its concentration gradient through a ${{\text{K}}^{+}}$leak channel in the apical aspect of the cells, back into the lumen of the ascending limb.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286356
In distal convoluted tubule of the nephrons:
2 Secretion of ${{\text{K}}^{+}}$ions does not require energy.
3 Water reabsorption requires energy.
4 Ammonia is secreted.
Explanation:
(a) Reabsorption of $\text{Na}+$ in the tubules is an active process.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286357
The reabsorption of water in the following part of nephron is obligatory
1 DCT.
2 PCT
3 Collecting tubule
4 All of these
Explanation:
(c) The water absorption from DCT and collecting tubule is facultative.
NCERT Page-294 / N-209
Excretory Products and Their Elimination(NCERT)
286358
The maximum amount of electrolytes and water $\left( 70-80\text{ }\!\!%\!\!\text{ } \right)$ from the glomerular filtrate is reabsorbed in which of the following part of the nephron?
1 Ascending limb loop of Henle
2 Distal convoluted tubule
3 Proximal convoluted tubule
4 Descending loop of Henle
Explanation:
(c) During glomerular filtration in kidneys, ultrafiltration of blood occurs as almost all the constituents of plasma except proteins pass onto the Bowman's capsule. Then nearly $99\text{ }\!\!%\!\!\text{ }$ of the filtrate is reabsorbed by renal tubules. Proximal convoluted tubûles shows maximum reabsorption and nearly all the essential nutrients and $70-80\text{ }\!\!%\!\!\text{ }$ of electrolytes and water are reabsorbed by this segments.
