A molecule made up of a relatively short chain of amino acid building blocks.
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A Twig Science
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To change the shape of a protein or amino acid molecule, disrupting its normal biological activity, but without changing it chemically.
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A Twig Science
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Key scientific terms defined in just 60...

A protein found in muscle tissue that performs a similar role to haemoglobin in the blood, as a carrier of oxygen that releases it to cells when required
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A Twig Science
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Key scientific terms...

A protein found in red blood cells that binds and transports oxygen in the blood.
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A Twig Science
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Key scientific terms defined in just 60 seconds using stunning images and concise textual...

A protein produced by the immune system that attacks a harmful agent, such as a virus or bacteria.
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A Twig Science
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A molecule or fragment of a molecule that triggers an immune response, causing the body to produce specific antibodies against it.
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A Twig Science
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The ability of bacteria to survive exposure to an antibiotic, often by producing a protein that disables or prevents transport of the antibiotic into the cell.
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Large molecules that are polymers of amino acids, linked in long chains by peptide bonds, and usually folded into a rough ball.
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A Twig Science
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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...

DNA carries genetic information to produce proteins and build new cells: a process at the heart of all life on Earth. Biology - Cells And DNA - Learning Points. Deoxyribonucleic Acid (DNA) carry the genetic code required to make protein...

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...

Proteins are at the root of virtually all bodily functions, from growth to metabolism to transporting oxygen around the body. Learn how your body makes or ingests all the protein you need. Chemistry - Chemical Industries - Learning...

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...

What would happen if we removed one of our three basic food groups? Discover how reducing your intake of carbohydrates and increasing protein can affect your body. Chemistry - Chemical Industries - Learning Points. A low-carbohydrate,...

We use the enzyme pepsin and hydrochloric acid to simulate the conditions within the stomach in two boiling tubes. Cooked egg whites are ground and added to two boiling tubes of hydrochloric acid, but one is mixed with a crushed antacid...

We demonstrate denaturing by adding the enzyme trypsin to photographic film. Strips of photographic film are added to trypsin solution at different temperatures to determine the optimum conditions for the enzyme. In the right conditions...

Four foodstuffs are shown, but which is the odd one out and is not a source of protein?
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Life processes - Humans and other animals - Die
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Fish, nuts and chee
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Discover the key to a balanced diet.
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Life processes - Humans and other animals - Die
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A balanced diet contain
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all the nutrients the body needs.
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Obesity is a condition that can affect animals and humans.
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Life processes - Humans and other animals - Die
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/> Obesity can damage your health.
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Carbohydrates are measured indirectly, rather than using experimental methods. First, the amount of other nutrients in the food (protein, fats, water, ash, and alcohol) is determined individually. We then subtract the sum of these...

This chemistry science project compares the protein content of plant-based milk to dairy milk.

Dive into the fascinating world of eggs with Mac Lesggy as he explores how a single cell transforms into a culinary staple. Discover the structural and nutritional composition of eggs, their benefits as a meat alternative, and the...

Cancer prevention is a major goal in health research, and one major milestone was the HPV vaccine, which targets a virus that is responsible for different types of cancer, mainly cervical cancer. Now we’ve got some recent excitement in...

Discover how to read food labels and understand the role of various additives in your favorite foods. Learn about the natural and artificial additives found in everyday items like pizza, ketchup, and syrup, and gain insights into their...