Mock Qu's

Question 1

Describe what happens during the planned/ programmed cell death. Name the process (6 marks)

Answer 1

Process: Apotosis
1. The cell dies at the end of its life, controlling the population of cells
2. Cell shrinkage
3. Plasma membrane blebbing
4. Formation of apoptotic bodies
5. phagocytosis

Question 2

Describe the key features of nerve signalling and give an example of a disease process which occurs because of nerve signalling failure (5 marks)

Answer 2

Disease: Parkins’s disease
1. Used exclusively by neurones
2. Uses neurotransmitters (1 mark) to send chemicals through a gap – synapse (1 mark) to another neurone or to a receptor cell eg. muscles (1 mark)
3. Fast, long-distance action (1 mark)

Question 3

qu- long and short distance reponses