Formative Practice 13.2 (Form 4 Biology Textbook Exercise and Answer)

Question 1:
In which part of the kidney can the proximal convoluted tubule, loop of Henle and distal convoluted tubule be found?

The proximal convoluted tubules and distal convoluted tubules are found in the cortex, whereas the loop of Henle is found in the medulla.

Question 2:
Suggest two possible activities that can cause the walls of the collecting duct to become more permeable to water.

Eating salty foods and drinking less water

Question 3:
State how Na+ ions, water and glucose are reabsorbed into the proximal convoluted tubule.

Water is reabsorbed through osmosis. The reabsorption of sodium ions and glucose occurs through active transport.

Question 4:
An individual suffers damage in one kidney. Does the individual need to undergo haemodialysis?
Suggest steps that this individual needs to take in order to go through his daily life without problems.

The individual does not need undergo haemodialysis. The individual only needs to reduce food rich in protein and salt as well drink enough water.

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