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CIE
AS & A Level
Biology (9700)
Biology 9700/13 May June 2024
1. Eyepiece graticule calibration necessary for accurate microscopic measurements in relation to magnification.
2. Differentiation of eukaryotic and bacterial features, including ribosomal structure, DNA form, and respiration mechanisms.
3. Functional properties of phospholipid bilayers analyzed through their polar and nonpolar interactions with water.
4. Structural adaptations of cellulose and lignin in plant cells for rigidity and water transport.
5. Enzymatic reaction rates explored using turnover numbers, inhibition types, and Michaelis-Menten constant implications.
6. Role of hydrogen bonding in water's cohesive properties, high specific heat capacity, and solvent capabilities.
7. Comparison of gas exchange mechanisms in alveoli, linked to partial pressure gradients and diffusion efficiency.
8. Immune system responses, focusing on primary responses, antigen presentation, and B-lymphocyte activation.
9. Pathogen resistance characteristics in tuberculosis and influenza explained through antigen variability and immune memory limitations.
10. Structural distinctions in Gram-positive and Gram-negative bacteria influencing antibiotic susceptibility.
CIE
AS & A Level
Biology (9700)
Jun
2024
Biology (9700) directory
Laura Bellini
Classification: Paper 1
Page count: 20
Viewed: 376
Last update: 5 months ago
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