Explain the sliding filament model of muscular contraction including the roles of troponin, tropomyosin, calcium ions and ATP
1 Answer Describe the ultrastructure of striated muscle with reference to sarcomere structure using electron micrographs and diagrams
1 Answer Describe the roles of neuromuscular junctions, the T-tubule system and sarcoplasmic reticulum in stimulating contraction in striated muscle
1 Answer Describe the structure of a cholinergic synapse and explain how it functions, including the role of calcium ions
1 Answer Explain the importance of the refractory period in determining the frequency of impulses
1 Answer Describe and explain the rapid transmission of an impulse in a myelinated neurone with reference to saltatory conduction
1 Answer Describe and explain changes to the membrane potential of neurones, including: • how the resting potential is maintained • the events that occur during an action potential • how the resting potential is restored during the refractory period
1 Answer What is the Difference between nervous system and the endocrine system?
1 Answer Explain the principles of operation of test strips and biosensors for measuring the concentration of glucose in blood and urine, with reference to glucose oxidase and peroxidase enzymes
1 Answer Explain how negative feedback control mechanisms regulate blood glucose concentration, with reference to the effects of insulin on muscle cells and liver cells and the effect of glucagon on liver cells
1 Answer 
BNO Team
BNO Team
BNO Team
BNO Team
BNO Team
BNO Team
Sourav Pan
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