Biology (A) 9BN0/03 May June 2023 | Edexcel A Level Past Papers With Mark Scheme

Edexcel A Level Biology A (9BN0) Jun 2023

معلم موافق رایگان بودن است.

1. Cardiovascular System and Circulation: Importance of the heart in animals, reasons for continued heartbeats after removal, differences in atrial contractions.

2. Immunology and Pathogens: Role of neutrophils and monocytes in immune response, antigen presentation, cytokine production, and immune system evasion by Mycobacterium tuberculosis.

3. Genetics and Inheritance: Gene mutations, inheritance of traits in zebrafish (stripes vs. spots, fin length), Punnett square analysis, chi-squared statistical calculations.

4. Thermoregulation and Homeostasis: Role of sweating in temperature control, effects of environmental temperature and exercise on sweat rate, and how sweating is regulated.

5. Neurobiology and Disease: Role of myelination in nerve impulse conduction, impact of diabetic peripheral neuropathy on nerve function, risk factors like high triglycerides and smoking.

6. Molecular Biology and Transcription Factors: Function of STAT3 in immune regulation, effects of SNPs in the STAT3 gene on tuberculosis infection risk, and evaluation of allele impacts on immunity.