Biology WBI11/01 January 2020 | Edexcel International AS Level Past Papers With Mark Scheme

Edexcel International AS/A Level Biology (WBI) Jan 2020

معلم موافق رایگان بودن است.

1. DNA vs mRNA comparison: nucleotide components, structural differences, complementary base pairing

2. Enzyme kinetics: substrate concentration effect, Michaelis-Menten equation, activation energy changes with enzymes

3. Solubility of compounds in blood: temperature effect on sodium chloride vs glucose, molecular mass calculation, polarity influence on solubility

4. Osmoregulation in unicellular organisms: contractile vacuole activity in different solutions, water potential gradients, membrane permeability

5. Lactose hydrolysis: enzyme specificity, energy profile of catalyzed vs uncatalyzed reactions, enzyme-substrate interactions

6. Heart structure and cardiovascular health: coronary arteries, atherosclerosis, myocardial infarction causes, diet impact on blood vessels