Biology (A) 8BN0/02 May June 2017
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1. Cellulose and Plant Cell Walls – Identifying the monomer of cellulose, glycosidic bonding patterns, and the role of calcium pectate in middle lamella.
2. Lignin and Secondary Thickening – Determining plant tissues containing lignin and explaining how lignification affects water permeability and strength.
3. Starch Structure and Function – Analyzing how amylose and amylopectin contribute to starch’s efficiency as a storage molecule.
4. Genetics of Lupus – Examining polygenic inheritance, environmental factors affecting lupus development, and the genetic impact of X-linked recessive alleles.
5. Conservation Biology – Evaluating the genetic consequences of interbreeding in Scottish wildcats and the effectiveness of captive breeding programs.
6. Mitosis and Cancer Treatment – Calculating the mitotic index, investigating the impact of herbicides on mitotic rates, and explaining how chemotherapy disrupts spindle fiber function.
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