Biology 9700/23 May June 2023 | Cambridge AS Level Past Papers With Mark Scheme

- Cell cycle stages: mitosis phases, chromosome behavior, interphase functions, DNA ligase role, telomere maintenance.
- Tuberculosis factors: biological influences, social determinants, economic impacts, HIV correlation, antibiotic resistance strategies.
- Blood cell types: white blood cells, red blood cells, carbonic anhydrase function, substrate concentration effects, competitive inhibition.
- Gluten structure: glutenin, gliadin, protein levels, intron absence effects, glycoprotein synthesis roles.
- Phloem and xylem transport: sucrose movement, respiration inhibition effects, semi-quantitative analysis, color change indicators.
- Oligosaccharides and glycoproteins: nystose structure differences, cell surface membrane roles, rough endoplasmic reticulum, Golgi body functions.