1. a)Using a well labelled diagram outline the functions of eukaryotic cell organelles. (13 marks)
b)By providing appropriate examples,explain the concept of homeostasis (12 marks)

2. a)Discuss the initiation and the propagation of an action potential. (13 marks)
b)Discuss the process involved in transmission through a chemical synapse. (12 marks)

3. a)Draw a nephron and clearly label it. (6 marks)
b)List the functions of a nephron (4 marks)
C)Define the term “glomerular filtration rate (GFR) and outline the factors that influence it (10 marks)
d)Define the following terms with reference to the kidney (5 marks)
i)Re-absorption
ii)Secretion
iii)Excretion
iv)Ultrafiltration

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