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Unit 4 of 6

Unit 4: Energy, Environment, Microbiology and Immunity

Edexcel IAL Biology · Linear · 29 lessons · 5 quizzes

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4.1

Unit 4 — Complete A Level and AS source20 min

4.1

Photosynthesis20 min

4.2

Ecosystems & Energy Transfer20 min

4.3

Climate Change20 min

4.4

Evolution20 min

4.5

Microorganisms & Immunity20 min

4.6

Forensics20 min

4.8

Unit 4 - Assignment: Energy, Environment, Microbiology and Immunity20 min

4.1.1

Plant Cell Structure20 min

4.1.2

Electron Microscopy of Plant Cells20 min

4.1.3

Starch and Cellulose: Structure and Function20 min

4.1.4

Properties of Cellulose and Plant Fibres20 min

4.1.5

The Vascular Structure of Plants20 min

4.1.6

Core Practical 7: Identifying Tissue Types Within Stems20 min

4.2.1

Plant-Based Products for Sustainability20 min

4.2.2

Water and Inorganic Ions in Plants20 min

4.2.3

Core Practical 8: Determining the Tensile Strength of Plant Fibres20 min

4.3.1

Bacterial Growth Conditions20 min

4.3.2

Plant Products with Antimicrobial Properties20 min

4.3.3

Core Practical 9: Antimicrobial Properties of Plants20 min

4.3.4

Development of Drugs and Drug Testing20 min

4.4.1

The Three Domains of Life20 min

4.4.2

The Variety of Life20 min

4.4.3

Biodiversity and Endemism20 min

4.4.4

Species Richness and Heterozygosity Index20 min

4.4.5

Index of Biodiversity20 min

4.4.6

Ecological Niches and Adaptations20 min

4.4.7

Hardy-Weinberg Equation20 min

4.4.8

Roles of Seed Banks and Zoos in Conservation20 min

Practice for this unit

Photosynthesis - Check yourself

Marked questions with instant feedback and a full review.

Ecosystems & Energy Transfer - Check yourself

Marked questions with instant feedback and a full review.

Evolution - Check yourself

Marked questions with instant feedback and a full review.

Microorganisms & Immunity - Check yourself

Marked questions with instant feedback and a full review.

4.6 Forensics – Exam questions

Marked questions with instant feedback and a full review.