Past Papers
Multimedia
Forum
QuizHub
Tutorial
School

Biology (A) H020/01 June 2023

1. Antibody structure recognition, enzyme activity vs. pH, protein secretion pathway, cytoskeleton functions, prokaryotic traits, glucose and cellulose structure, nucleotides and ADP composition, stem cell potential, hydrophyte adaptations, catalytic rate analysis

2. Gas exchange system anatomy (alveoli, capillaries), chitinase enzyme mechanism (induced fit hypothesis), percentage error in pipetting, pipette accuracy selection, TLC Rf calculation, amino acid polarity inference

3. Evolution evidence from fossil record (diatom cell wall width change), phylogeny validation via Spearman′s rank (rs = 0.979), domain classification and taxonomic terminology, membrane fluidity regulation by cholesterol

4. Heart and circulation: human and bird heart comparison, ECG trace interpretation, double circulatory system function, metabolic enzyme epigenetics (TET, CH3 removal), vitamin C as cofactor

5. Cell organelle classification (membrane-bound, lipid synthesis), carbohydrate function comparison (glucose vs. starch vs. glycogen), intracellular vs. extracellular enzymes (catalase, trypsin, TET), phosphodiester and target cytosine base annotation in DNA diagram

omer uner

Classification: OCR Paper 1
Page count: 28
Viewed: 6
Last update: a month ago
Crash report
Create Quiz

Related Past Papers