The process by which cells can divide to produce two genetically identical cells.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

An overabundance of nutrients in a body of water, causing excessive plant growth.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

An organic compound required by organisms in very small quantities for growth and to maintain good health.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

A type of bone cell.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract concepts...

When a plant grows in a particular direction in response to an external stimulus.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Chemical substances produced in our bodies that act as messengers, communicating between our different cells and organs.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using...

A type of plant hormone that affects growth and development, often encouraging root or stem growth.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

The early stages of growth of a plant or fungus from a dormant seed or spore.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....

Melatonin regulates our sleep cycle and during puberty this hormone becomes imbalanced. Could this be why teenagers are moody? Biology - Being Human - Learning Points. The hormone melatonin regulates the circadian rhythm - the body's...

Bones are living, growing tissues. What are they made of and how do they develop from young to old? Biology - Human Body - Learning Points. Bones support the body and protect vital organs. When you are born you have around 300 bones,...

How Fibonacci came up with his sequence, and how it is repeated throughout nature, from flower's petals to snails' shells – and how it has inspired the financial and computing industries. Maths - Number A Twig Math Film. Reinforce and...

Salt was discovered thousands of years ago as a way of preserving food. How does it do this? And what else does salt preserve? Chemistry - Chemical Industries - Learning Points. Food rots because of bacteria and fungi. Salt is an...

Discover the magical world of fungi. Neither plant nor animal, they are a separate classification of living organism. Biology - Ecosystems - Learning Points. Fungi are neither plant nor animal. Most fungi are made up of networks of...

Plants produce oxygen and provide our food, but what do they need to live? Learn why nitrates, phosphates, potassium and magnesium are vital for plant health. Biology - Plants - Learning Points. Understanding how plants grow ensures we...

Discover how animals have adapted to survive in the extreme climates of the savannah. Biology - Ecosystems - Learning Points. The savannah is one of the most dynamic habitats on the planet. Areas of savannah can be found to the north and...

How scientists pieced together the life and death of an Allosaurus called "Big Al" by studying his bones. Biology - Adaptation And Evolution - Learning Points. Big Al is one of the most complete dinosaur skeletons ever discovered. His...

Lichens exist in extreme environments where other life struggles to survive. But these tough species cannot tolerate pollution, and reflect the health of ecosystems. Biology - Ecosystems - Learning Points. Lichens are organisms that can...

How energy is passed through living things can be described as a food chain. Journey through a food chain, from primary producers at the bottom to tertiary consumers at the top. Biology - Ecosystems - Learning Points. A 'food chain'...

Journey into the chloroplast, where photosynthesis takes place, to learn how plants convert sunlight into usable chemical energy - one of the most vital processes on Earth. Biology - Plants - Learning Points. Leaves are small...

Cancers claim more lives every year than any other disease, and come in many forms such as lung cancer, bowl cancer and breast cancer. Why are cancers so deadly and how can we treat them? Biology - Cells And DNA - Learning Points. There...

Discover which foods are vital for a healthy diet. What should you be eating, how much, and why? Biology - Healthy Living - Learning Points. You need a balanced diet to be healthy. A balanced diet is varied and contains different amounts...

Snow forms in the atmosphere as a result of water molecules attaching themselves to nuclei bacteria. But scientists have found ways to manipulate the freezing process of water and the production of these nuclei to create snow...

How an investigation into a skin disease in the American Deep South revealed the true value of a healthy diet - and what happens when you don't consume enough vitamins. Biology - Healthy Living - A lack of specific vitamins can cause...

Discover the hormones that dictate whether a plant grows downwards with gravity, towards water and nutrients, or upwards towards light. Biology - Plants - Learning Points. Tropisms allow plants to seek out the best conditions for...