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A wave model of sound

These diagnostic questions and response activities (contained in the zip file) support students in being able to:

  • Recognise that as a sound wave travels forward, the medium it travels through does not.
  • Describe the movement of each ‘particle’ of a longitudinal (sound) wave as the wave moves...

Waves on water and ropes

These diagnostic questions and response activities (contained in the zip file) support students in being able to:

  • Recognise that as a transverse wave travels forward, the medium through which it travels does not.
  • Describe the movement of each ‘particle’ of a transverse wave as the wave moves...

Diet and Exercise

These diagnostic questions and response activities (contained in the zip file) support students in being able to:

  • Explain what humans need in their diet and why.
  • Identify short-term and long-term effects of exercise on the human body.
  • Predict the possible outcomes of eating too much or...

Health and Climate Change

Published by the Wellcome Trust, the 'Big Picture' explores issues around biology and medicine. The Earth's climate is changing ever faster, and human activities play a role in speeding up this change.

The Earth’s climate is changing. In fact, it has always been changing. What is different now is the speed...

Drugs

Published by the Wellcome Trust, the 'Big Picture' explores issues around biology and medicine. While providing immense benefits, drugs are not the perfect solution.

They only work on a proportion of patients, sometimes they harm us, and we're not very good at taking them as we should. For some diseases,...

Plants

This issue of Big Picture provides lots of interesting information about flowering plants and their uses. 

The plant hormones animation explores the action of indole-3-acetic acid (IAA) and shows how scientists used experimental evidence to explain the role of auxins in a phototrophic response.

The...

Enzymes are Proteins

Enzymes are proteins that speed up the reactions by acting as catalysts. They increase the rate of reaction without being consumed or permanently altered by themselves. In Greek enzymes are divided into sections “En” which means “in” and second part is “zyme” means living. The study of enzymes is known as...

How To Know Your Thread Is Not Good Anymore

Definitely, the thread is not something like the metal that will last forever in your closet. You should replace it once it is too old to use or when it is about to end. Many sewing beginners must be thinking that their best basic sewing...

Food Technology - Careers

A Catalyst article about careers in the food industry. The food and drink industries are part of a chain linking farming and growing through to food processing, manufacture and finally to the sale of food in supermarkets and restaurants. This article describes some of the many career areas in food technology...

BRAF: from gene to cancer therapy

This film tells the story of how DNA sequencing was used to identify the gene BRAF. Clinical researcher Ultan McDermott tells the story of how scientists at the Wellcome Trust Sanger Institute discovered a specific mutation in the BRAF gene, which is found in around half of malignant melanoma cases. He...

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