Human kidneys can produce urine nearly "...

Human kidneys can produce urine nearly `"______"` times concentrated then the initial filtrate formed.

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Human kidneys can produce urine nearly ____A____times concentrated than initial filtrate formed . Select the option which correctly describes 'A' in the above statement.

Assertion :- Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed. Reason :- Counter current mechanism helps to maintain a concentration gradient in the medullary interstitium.

Which of the following statements is INCORRECT? I. Human kidneys can produce urine nearly six times more concentrated than the initial filtrate formed. II. An increase in body fluid volume can switch on the osmoreceptors and stimulate ADH. III. Substance like glucose, amino acids, Na^+ , etc., in the filtrate, are reabsorbed actively by the renal tubule whereas the nitrogenous wastes are absorbed by passive transport IV. Each kidney has nearly one million complex tubular structures called nephrons which are the functional units.

In kidneys, urine is produced by three processes

Assertion: In terrestrial animals,counter current mechanism helps in the concentration of the filtrate to pass out concentrated urine. Reason: Descending limb is impermeable to water while ascending limb is impermeable to Na^(+)

Read the following statements and find out the INCORRECT statement . (a) During urine formation, the tubular cells secrete substance like H^+, Na^+ and HCO_3^- into the filtrate. (b) As glomerular filtrate move down in descending limb of Henle it gets concentrated and as concentrated filtrate pass upward in ascending limb of HL it gets diluted. (c) Conditional reabsorption of Na^+ and water takes place in PCT. (d) Reabsorption in ascending limb of HL is minimum.

Assertion : Human insulin can be produced into bacterial cells using biotechnology Reason : To produce human insulin the A, B and C polypeptides of the human insulin are produced separately in the bacterial cells, extracted and combined by creating disulphide bonds

The rate constant of a first order reaction is 3 xx 10^(-6) per second. If the initial concentration is 0.10 M , the initial rate of reaction is

For the reaction A + B rarr C + D , doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B ismply doubles the reaction rate. What is the rate law for the reaction ?

Ram can see the purple colour of an acidic indicator below pH=5.5 only and the blue colour only above pH=8.50 .How many times that of acidic form, must the concentration of the basic form at least be for Ram to see the end point of titration of HCl with NaOH ?

CENGAGE BIOLOGY ENGLISH-EXCERETORY PRODUCTS AND THEIR ELIMINATION-ARCHIVES

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