Biology B (Advancing Biology) H022: Cells and microscopy Topical Past Paper Questions
OCR AS Biology B (Advancing Biology) (H022) past-paper questions on Cells and microscopy, free. This topic is frequently examined across 4 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Amino acids have the same general structure with four different chemical groups attached to a central carbon atom. The structure of the amino acid valine is shown in the diagram. (a) One of the chemical groups in valine has been labelled on the diagram Circle and label two other…
Tuberculosis is a disease caused by the pathogen Mycobacterium tuberculosis. M. tuberculosis is a prokaryotic cell which does not contain plasmids. (a) Describe two structural differences between an erythrocyte and a prokaryotic cell such as M. tuberculosis. Difference 1 ..... Di…
A student was using an eyepiece gratricule and a stage micrometer to calculate the length of a human cheek epithelial cell. The following calibration and measurements were recorded: • magnification of eyepiece lens = ×10 • magnification of objective lens = ×10 • 20 eyepiece divis…
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