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KS3 Biology

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1: Living Organisms

1: Cells and Organisation

Cells as a Fundamental Unit of Living Organisms

How to Observe, Interpret and Record Cell Structure Using a Light Microscope

Plant and Animal Cells

Diffusion

Unicellular Organisms: Structural Adaptations

Multicellular Organisms: Hierarchical Organisation

2: Skeletal and Muscular Systems

The Human Skeleton: Structure and Function

Biomechanics

Muscles: Function and Antagonistic Muscles

3: Nutrition and Digestion

The Content of a Healthy Human Diet

Consequences of Imbalances in the Human Diet

The Human Digestive System

Bacteria in the Human Digestive System

4: Gas Exchange Systems

The Human Gas Exchange System: Structure and Function

The Breathing Mechanism

Impact of Lifestyle and Health Conditions on the Gas Exchange System

5: Reproduction

Male and Female Reproductive Systems

The Menstrual Cycle

Reproduction in Humans

6: Health

Effects of Lifestyle on Human Health

Effects of Recreational Drugs

7: Plants

How Do Plants Obtain Nutrition and Water?

Gas Exchange in Plants

Reproduction in Plants

2: Material Cycles and Energy

1: Photosynthesis

Photosynthesis: Reaction and Its Importance to Life

Adaptations for Photosynthesis in Leaves

2: Cellular Respiration

Aerobic Respiration

Anaerobic Respiration

3: Biological Interactions

1: Relationships in an Ecosystem

Ecosystems

Food Webs

Human Food Security

The Effect of the Environment on Organisms

2: Inheritance Chromosomes DNA and Genes

Heredity

The DNA Model and Its Development

Differences Between Species

Variation Within Species

Competition, Natural Selection and Extinction

Importance of Maintaining Biodiversity

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Topic: 3: Nutrition and Digestion

Use the Figure to suggest why this person may develop muscle wastage even though they eat a lot of food.

(Marks: 3)

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