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When the concentration of urine is low, the blood will reabsorb more water from the collecting duct. This is via the action of ADH increasing the permeability of the collecting duct walls (via aquaporins)...

The Bowman’s capsule, part of the filtration unit that removes glucose, salt, water, amino acids and urea out of the blood into the nephron.

Populations can still have low levels of genetic diversity if they have never been hunted. This can happen because the population is very small and isolated from other populations. Small populations may i...

Firstly, I advise that you spend a minimum of 40 minutes on this section. This will allow you enough time to make sure that you have answered all other questions and also give you time to plan and write y...

Let's say you have a bowl of water and you separate it into two compartments with a partially permeable membrane. This membrane does not allow proteins to pass through but it allows water to diffuse freel...