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Helga [31]
3 years ago
7

What is the difference between a countercurrent multiplier system, such as the one involving the loop of Henle, and the counterc

urrent systems that maximize oxygen absorption by fish gills or reduce heat loss in endotherms?
A. A countercurrent multiplier system, such as the one involving the loop of Henle, involves movement of ions rather than movement of oxygen or heat transfer.
B. Unlike the other countercurrent systems, a countercurrent multiplier system, such as the one involving the loop of Henle, expends energy in active transport.
C. A countercurrent multiplier system, such as the one involving the loop of Henle, includes a capillary bed.
Biology
1 answer:
Bas_tet [7]3 years ago
3 0

Answer:

The CORRECT ANSWER IS B.

B. Unlike the other countercurrent systems, a countercurrent multiplier system expends energy in active transport.

Explanation:

The countercurrent multiplier system involving the loop of Henle uses up energy in the form of ATP to actively conduct NaCl out of the filtrate in the upper region of the ascending limb of the loop. This energy in the form of ATP that is being used uniquely differentiates a countercurrent multiplier system from the different forms of countercurrent systems.

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Answer:

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Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and  "Y" denotes weight of powder 2 added to the new mixture

Total weight of vitamin B1 in the mixture is equal to 80 mg

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Equation 1

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Equation 2

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Let us simplify the above two equations, we will get

10 X + 15 Y = 8000\\3X + 2Y = 2000

2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560

Substituting value of X in equation 2 we get

0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160

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