Biology Key Stage 3

Contents

Structure and Function of Living Organisms

Living Creatures

• Organism
• MRS GREN

Cells

Multicellular Organisms

• Animal Cells
• Plant Cells

Unicellular Organisms

• Bacteria
• Amoeba
• Euglena

Cell Structure

• Chloroplast
• Cell Membrane
• Cell Wall
• Cytoplasm
• Mitochondrion
• Nucleus
• Vacuole

Specialised Cells

Specialised Animal Cells

• Muscle Cell
• Nerve Cell
• Ciliated Epithelial Cell
• Red Blood Cell
• White Blood Cell
• Sperm Cell
• Egg Cell

Specialised Plant Cells

• Palisade Cell
• Spongy Mesophyll Cell
• Guard Cell
• Xylem Cell
• Root Hair Cell

Tissues

Organs

Organ Systems

Skeletal System

• Making Blood Cells

Muscular System

• Antagonistic Muscles

Digestive System

Organs in the Digestive System

• Mouth
• Oesophagus
• Stomach
• Small Intestine
  • Villi
• Large Intestine
• Rectum
• Anus

Animal Nutrition

• Diet
• Balanced Diet
• Carbohydrate
• Lipid
• Protein
• Mineral
• Vitamin
• Fibre
• Obesity
• Starvation
• Deficiency Disease

Digestion

• Enzymes
• Bacteria in Digestion
• Absorption

Plant Nutrition

• Photosynthesis
• Root Absorption

Gas Exchange Systems

Breathing System

• Mouth
• Trachea
• Bronchi
• Bronchioles
• Lungs
  • Alveoli

Breathing

• Exercise
• Asthma
• Smoking

Gas Exchange in Plants

• Photosynthesis
• Stomata

Reproductive System

Female Reproductive System

• Ovary
• Oviduct
• Uterus
• Cervix
• Vagina

Male Reproductive System

• Testes
• Sperm Duct
• Reproductive Gland
• Penis

Reproduction in Mammals

• Menstural Cycle
• Intercourse
• Ejaculation
• Gametes
• Fertilisation
• Gestation
  • Foetus
  • Placenta
  • Umbilical Cord
  • Amnion

Plant Reproductive System

• Flower
  • Stamen
  • Stigma
  • Pollen
• Fruit
• Seed

Reproduction in Flowering Plants

• Pollination
• Fruiting

Health

• Drugs

Material Cycles and Energy

Photosynthesis

• Leaf
• Chloroplasts
• Chlorophyll

Photosynthesis and the Atmosphere

Cellular Respiration

• Aerobic Respiration
• Anaerobic Respiration
  • Fermenation

Interactions and Interdependencies

Relationships in an Ecosystem

• Food Chains
• Food Webs
• Pollination
• Pollution
  • DDT

Genetics and Evolution

Inheritance, Chromosomes, DNA and genes

Inheritance/Heredity

• DNA
• Chromosome
• Gene

Evolution

• Variation
  • Discontinuous Variation
  • Continuous Variation
• Natural Selection
• Adaptation
• Extinction
• Biodiversity
  • Gene Banks

Fossils