A-Level Biology: Nitrogen & Phosphorus Cycles - Exam Q and As

A clear and set of slides covering the nutrient cycles as required for the AQA A-Level Biology specification. This resource is designed to simplify the biochemical stages of each cycle while providing plenty of opportunities for exam practice.

Core Topics:

• The Nitrogen Cycle: Covers nitrogen fixation, ammonification, nitrification, and denitrification, including the roles of specific bacteria.
• The Phosphorus Cycle: Explains the role of weathering, absorption by plants, and the importance of mycorrhizae.
• Fertilisers & Eutrophication: A breakdown of how nutrient runoff affects ecosystems.
• Biological Molecules: Brief links to why these cycles are essential for the production of DNA, ATP, and proteins.

Key Resource Features:

• Embedded Exam Questions: Includes actual AQA past paper questions to check understanding as you go.
• Answers Included: Mark schemes are provided on the following slides for immediate feedback and self-assessment.
• Visual Aids: Uses clear diagrams to help students visualise the flow of nutrients through an ecosystem.