Biology WBI14/01 January 2022 | Edexcel International A Level Past Papers With Mark Scheme
Edexcel
International AS/A Level
Biology (WBI)
Jan
2022
2. chloroplast pigments–absorption vs action spectra, pigment variety advantage, chlorophyll a/b role, amino acid synthesis from light-independent reaction products
3. HIV replication–immune suppression, reverse transcriptase/integrase inhibition, combination therapy benefits, viral load rebound post-therapy
4. λ phage infection–J protein binding to maltoporin, E. coli entry, sugar channel exploitation, host-pathogen co-evolutionary dynamics
5. DNA analysis–nuclear vs mitochondrial DNA, PCR amplification steps and timing, genetic relationship via mtDNA sequence similarity
6. photosynthesis efficiency–RUBISCO activity and GP formation in chloroplast, Spartina vs Leucopoa temperature response, ecological adaptation correlation
معلم موافق رایگان بودن است.
1. polar bear adaptations–metabolic water generation, genetic diversity reduction from habitat fragmentation, evolutionary traits for Arctic survival2. chloroplast pigments–absorption vs action spectra, pigment variety advantage, chlorophyll a/b role, amino acid synthesis from light-independent reaction products
3. HIV replication–immune suppression, reverse transcriptase/integrase inhibition, combination therapy benefits, viral load rebound post-therapy
4. λ phage infection–J protein binding to maltoporin, E. coli entry, sugar channel exploitation, host-pathogen co-evolutionary dynamics
5. DNA analysis–nuclear vs mitochondrial DNA, PCR amplification steps and timing, genetic relationship via mtDNA sequence similarity
6. photosynthesis efficiency–RUBISCO activity and GP formation in chloroplast, Spartina vs Leucopoa temperature response, ecological adaptation correlation
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