• Science
• Weblinks
• 7694 - Stretch & Challenge Articles for GCSE WJEC Biology Pack 1

Weblinks and videos for use with 7694 – Stretch & Challenge Articles for GCSE WJEC Biology Pack 1

The Very Hungry Eukaryote!

• Endosymbiosis

The Life and Times of Good Bacteria

• The Good Bacteria

Microscopes – from Spectacles to Single Atoms

• Electron Microscopes

The Life Osmotic

• Osmoregulation in Freshwater Fish

Digestive Enzymes, Clean Clothes and Smelly Cheese

• Industrial Uses of Enzymes

The Oxygen Apocalypse!

• The Origin of Oxygen in the Earth's Atmosphere

Lactic Acid – the Enemy of Athletes?

• Article: Lactic Acid Not Athlete's Poison

Catching a Breath

• Animal Respiration

Diseases of Blood: Sickle-cell Disease

• Sickle-cell Disease

Diets: Are All Diets Good Diets?

• NHS Choices: Live Well

Having a Change of Heart

• British Heart Foundation

Carnivores in the Plant World

• Carnivorous Plant Facts

The True Cost of a Meat-eating Diet

• Water and Food Security

Poison in the Ecosystem

• World Health Organization: Mercury and Health

(Formerly) The Cleanest Lake on Earth

• Hypoxia