Biology WBI14/01 June 2023 | Edexcel International A Level Past Papers With Mark Scheme

Edexcel International AS/A Level Biology (WBI) Jun 2023

معلم موافق رایگان بودن است.

1. magnesium ion uptake–oxygen presence effect, active transport evidence, role in chlorophyll synthesis and enzyme function
2. antibiotic mechanisms–bacteriostatic vs bactericidal comparison, Rf value analysis using chromatography, treatment identification accuracy
3. microbial symbiosis–panda gut microbiota aiding cellulose digestion, glycosidic bond type, Streptococcus abundance via sequencing
4. photosynthesis enhancement–PBF dye increasing oxygen production in algae, mass gain correlation, green light absorption impact
5. malaria vaccine trials–sporozoite-based immunization, immunity across strains, chemicals ensuring safety during clinical testing
6. whale ecosystem role–nutrient recycling, nitrogen contribution, phytoplankton growth promotion, carbon dioxide removal, reforestation policy integration