Unit 1: Cell Biology

Cell Structure

Animal and Plant Cells

Fungal and Bacterial cells

Practical: Microscopy

Transport Across Membranes

The Cell Membrane

Practical: Membrane Permeability

Diffusion

Osmosis

Practical: Osmosis and Diffusion

Active Transport

DNA and the Production of Proteins

DNA Structure & Function

Protein Synthesis

Proteins

Protein Structure & Function

Enzyme Structure & Function

Practical: Enzyme Action

Factors Affecting Enzyme Activity

Practical: Factors Affecting Enzyme Activity

Genetic engineering

Genetic Engineering

Respiration

Respiration in cells

Practical: Energy Content of Food

Aerobic Respiration

Fermentation

Comparing Aerobic Respiration and Fermentation

Practical: Investigating Respiration

Unit 2: Multicellular Organisms

Producing New Cells

Mitosis

Practical: Observing Mitosis

Stem Cells

Organisation of Cells

Control and Communication

Nervous Control

The Reflex Arc

Practical: Reflex Actions

Hormonal Control

Blood Glucose Regulation

Reproduction

The Gametes

Fertilisation

Variation and Inheritance

Types of Variation

Practical: Variation in Organisms

Key Terms in Genetics

Monohybrid Inheritance

Transport Systems in Plants

Transport System Structure in Plants

Practical: Stomatal Density

The Xylem and Phloem

Practical: The Xylem

Transpiration

Practical: Transpiration

Transport Systems in Animals

The Blood

Red Blood Cells

White Blood Cells

Circulatory System

The Heart

Practical: Heart Dissection

Blood Vessels

Absorption of Materials

Exchange Surfaces

Adaptations of Exchange Surfaces

Gas Exchange

Practical: Lung Dissection

Nutrient Absorption

Unit 3: Life on Earth

Ecosystems

Key Terms in Ecology

Ecosystems & Niches

Competition

Practical: Competing for Resources

Distribution of organisms

Factors Affecting Distribution

Measuring Abiotic Factors

Sampling Organisms

Practical: Ecological Sampling

Using Keys

Indicator Species

Biodiversity

Photosynthesis

The Process of Photosynthesis

Practical: Factors Affecting Starch Production

Using the Products of Photosynthesis

Limiting Factors

Practical: Limiting Factors

Energy in ecosystems

Energy Transfers

Ecological Pyramids

Food production

Farming Methods

Nitrates

Excess nitrates

Pesticide accumulation

Evolution of species

Mutations

Natural Selection

Speciation

Study tools

• SQA National 5 Biology · Past Papers

Related links

• National 5 Biology · Revision Notes
• National 5 Biology · Past Papers
• SQA National 5 Biology · Exam specification