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Explain the role of the loop of Henle in producing concentrated urine.

Na+ ions are actively transported from ascending limb this lowers the water potential in the medulla water diffuses out go the descending limb, but not the ascending limb as it is impermeable water also leav...
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Answered by Maisha H. • Biology tutor
2915 Views

What is the process of diffusion?

Diffusion is the movement of a substance from an area of high concentration to an area of low.For example, imagine spraying a deodorant can. The substance coming out of the can is at high concentration and o...
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Answered by Charles H. • Biology tutor
3078 Views

How is the small intestine adapted for efficient absorption?

Diffusion is the main mechanism for absorption within the small intestine, so effective diffusion is the key to sufficient nutrient absorption. The small intestine has a very large surface area, created by f...
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Answered by Michelle L. • Biology tutor
8879 Views

How is the effectiveness of gaseous exchange surfaces in humans increased?

Gaseous exchange in humans takes place in the alveoli in the lungs, the aim is to remove carbon dioxide from the lungs and increase oxygen content of the blood.Increased surface area of the exchange surface ...
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Answered by Lowri P. • Biology tutor
3275 Views

What is the equation for respiration?

Oxygen+glucose=Carbon dioxide+water6O2 +C6H12O6=6CO2+6H2OATP (universal energy currency) is released/formed alongside this reaction
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Answered by Isabel D. • Biology tutor
4543 Views