OCR • Biology A
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2025 OCR AS LEVEL BIOLOGY A| (H020_01|question paper| June 2025
2025 OCR AS LEVEL BIOLOGY A| (H020_02| final mark scheme| June 2025
2025 OCR AS LEVEL BILOLOGY A| (H020_01| final mark scheme| June 2025
2025 OCR AS LEVEL BILOLOGY A| (H020_02| question paper| June 2025
This document explains the fundamental properties and functions of enzymes, focusing on how they catalyze biochemical reactions in cells. It covers enzyme structure, active sites, specificity, factors affecting enzyme activity, and the role of enzymes in metabolic pathways.
This document covers the structure and function of the plasma membrane, including its composition, organization, and role in maintaining cellular homeostasis. Key topics include the fluid mosaic model, membrane lipids and proteins, membrane fluidity, and mechanisms of transport across the membrane.
A-LEVEL OCR 2025 BIOLOGY A PAPER 3 MARK SCHEME
A-LEVEL OCR 2025 BIOLOGY A PAPER 3
A-LEVEL OCR 2025 BIOLOGY A PAPER 2 MARK SCHEME
A-LEVEL OCR 2025 BIOLOGY A PAPER 2