$\begin{matrix} S u b s t a n c e & A m o u n t I n i t i a l l y f i l t e r e d o u t o f b l o o d s t r e a m & A m o u n t r e t u r n e d t o b l o o d s t r e a m W a t e r & 100 L & 99 L G l u c o s e & 370 g & 364 g U r e a & 30 g & 10 g \end{matrix}$

Calculate the percentage of each substance absorbed into the blood.

Percent absorbed by blood = $\frac{A m o u n t r e t u r n e d t o b l o o d s t r e a m \times 100}{A m o u n t i n i t i a l l y f i l t e r e d o u t}$

Water = 99.9%, Glucose = 98.8%, Urea = 33.3%

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Water = 99.9%, Glucose = 98.3%, Urea = 33.3%

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Water = 97.9%, Glucose = 98.8%, Urea = 33.7%

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Water = 69.9%, Glucose = 58.8%, Urea = 33.3%

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Solution

The correct option is B
Water = 99.9%, Glucose = 98.3%, Urea = 33.3%

Using the formula,

Percent absorbed by blood = $\frac{A m o u n t r e t u r n e d t o b l o o d s t r e a m \times 100}{A m o u n t i n i t i a l l y f i l t e r e d o u t}$

Percent absorbed by blood(Water) = $\frac{99 \times 100}{100}$ = 99%

Percent absorbed by blood(Glucose) = $\frac{364 \times 100}{370}$ = 98.3%

Percent absorbed by blood(Urea) = $\frac{10 \times 100}{30}$ = 33.3%

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Similar questions

$\begin{matrix} S u b s t a n c e & A m o u n t I n i t i a l l y f i l t e r e d o u t o f b l o o d s t r e a m & A m o u n t r e t u r n e d t o b l o o d s t r e a m W a t e r & 100 L & 99 L G l u c o s e & 370 g & 364 g U r e a & 30 g & 10 g \end{matrix}$

Calculate the amount of each substance left in the urine.

Q. The substance which is not reabsorbed into the blood capillaries surrounding the tubule of a nephron is mainly:
(a) glucose
(b) amino acid
(c) urea
(d) water

Q. Following are four statements. Find out the correct combination.
1. Glucose has high threshold value.
2. Urine is concentrated in Henles loop.
3. Haemodialyser removes urea, uric acid, glucose and proteins.
4. In glomerulus, urea, uric acid, water, glucose and plasma proteins are filtered out

Match the following based on the composition of urine.

$\begin{matrix} S . N o & S u b s t a n c e & U r i n e 1 & W a t e r & a .0 2 & G l u c o s e & b .2 3 & U r e a & c . 0.6 4 & S a l t & d .95 \end{matrix}$

Match the following:

$\begin{matrix} Column I & Column II i. Pressure filtration & a. Urea and uric acid ii. Selective reabsorption & b. Penicillin iii. Tubular secretion & c. Water, glucose, amino acids iv. Excretion & d. Water, glucose, urea \end{matrix}$

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SubstanceAmount Initially filtered out of bloodstreamAmount returned to bloodstreamWater 100L 99LGlucose 370g 364gUrea 30g 10g Calculate the percentage of each substance absorbed into the blood. Percent absorbed by blood = Amount returned to bloodstream×100Amount initially filtered out