Biology 9700/13 Oct Nov 2014 | Cambridge AS Level Past Papers With Mark Scheme
1. Microscope calibration using stage micrometers and eyepiece graticules for cell measurements.
2. Density gradient centrifugation for separating cellular structures like nuclei, chloroplasts, and ribosomes.
3. Properties and roles of polysaccharides, proteins, and lipids in biological systems.
4. Mechanisms of enzyme action, including competitive inhibition and quaternary structure in proteins like haemoglobin.
5. Transport processes in plants, focusing on water potential and active transport in xylem and phloem.
6. Immune responses, including the production and role of macrophages, stem cells, and types of immunity.
باز نشر محتواها در فضای مجازی، ممنوع است.

باز نشر محتواها در فضای مجازی، ممنوع است.