Which mechanism is responsible for the ability of the kidneys to produce concentrated urine?

Active transport

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Passive transport

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Counter current mechanism

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Diffusion

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Solution

The correct option is C
Counter current mechanism

The loops of Henle, the vasa recta, collecting ducts and interstitial fluid are involved in the countercurrent mechanism for concentrating the urine.

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The following list indicates certain molecules/ions and their mechanism of transport across the cell membrane. Determine the correct pair(s) from the list.

I. Diffusion - $N a^{+}$

II. Active transport - Amino acids

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IV. Facilitated diffusion - Glucose

Q. The function of counter current mechanism in kidney is

Q. Which of the following is responsible for mechanical support and enzyme transport?

Small amounts of monosaccharides like glucose, amino acids and some of electrolytes like chloride ions are absorbed by (i). However, some of the substances like fructose and some amino acids are absorbed by the mechanism called (ii). Various nutrients like amino acids and electrolytes like Na+ are absorbed into the blood by (iii).

a) i) facilitated transport ii) active transport iii) simple diffusion

b) i) simple diffusion ii) facilitated transport iii) active transport

c) i) active transport ii) facilitated transport iii) simple diffusion

d) i) simple diffusion ii) active transport iii) facilitated transport

Q. Which of the following organelles is responsible for mechanical support and enzyme transport?

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Which mechanism is responsible for the ability of the kidneys to produce concentrated urine?

The correct option is C Counter current mechanism The loops of Henle, the vasa recta, collecting ducts and interstitial fluid are involved in the countercurrent mechanism for concentrating the urine.

The correct option is C
Counter current mechanism

The loops of Henle, the vasa recta, collecting ducts and interstitial fluid are involved in the countercurrent mechanism for concentrating the urine.