1. During striated muscular contraction:
- The sarcomere lengthens, the H zone remains the same size, the A and I bands both shorten
- The sarcomere, I band and H zone become narrower, the A band maintains its width
- The sarcomere and H zone become narrower, the A and I bands maintain their
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2. What does it mean to suffer from 'Type I' diabetes mellitus?
- Type I diabetics do not produce sufficient insulin, suspected to be due to an autoimmune response to pancreatic cells and must inject insulin to maintain their BGC.
- Type I diabetics have cells which are unresponsive to insulin (often due to obesity), and so must manage their carbohydrate intake to maintain their BGC
3. The chemo- and pressure receptors responsible for keeping the heart rate in check are found where?
- In the aortic arch
- In the carotid arteries
- In the brain stem
4. If a  mutates it may become a  which stimulates , leading to uncontrolled cell division, or a 
- 1: proto-oncogene, 2: oncogene, 3: cell division, 4: tumour
- 1: tumor suppressor gene, 2: oncogene, 3: cell division, 4: tumour
- 1: oncogene, 2: excitatory oncogene, 3: autolysis, 4: tumour
5. Consider the following reaction pathway: A -> D -> 4C -> 2B -> X. Which of the following would cause the system to display negative feedback?
- X decomposes into a sixth species, E
- X inhibits one or more of the enzymes involved in the pathway
- X promotes one or more of the enzymes involved in the pathway
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