This quiz reinforces the meaning of key words in the topic of biodiversity and ecosystems, including allopatric speciation, binomial nomenclature, bioinformatics, conservation, reporductive isolation and diversity indices.

A detailed diagram of a cell and organelles for students to label with the name of the structure and its function. Structures include rough and smooth endoplasmic reticulum, vacuole, ribosome, Golgi apparatus, cell wall, nucleus, chloroplast and mitochondrion.

A crossword covering enzyme action, inhibition, and activation energy.

This quiz reinforces the definitions of key terms in genetics, including polymerase chain reaction (PCR), types of mutation, DNA ligation, DNA amplification, gel electrophoresis, stem cells, recombinant DNA, vectors, restriction enzymes.

This quiz reinforces students use of key terms, including phospholipid bilayer, osmosis, active transport, transmembrane protein, ion pump, facilitated diffusion, endocytosis and fluid mosaic model.

This Nuffield Working with Science unit aimed to draw on the popularity of bird watching to develop skills of observation and investigation.

Guidance for teachers and technicians appears in...

The Birmingham Institute for Forest Research (BIFoR) is home to the BIFoR FACE facility, one of the world's largest climate change experiments where 150 parts per million extra of carbon dioxide is added to areas of the oak forest, to predict the impact on the ecosystem 50 years into the future.

BIFoR has...

This Catalyst article describes how, as two tectonic plates separate, wide fissures appear in the ground in northern Ethiopia. Eventually a new ocean will form in the area affected. The Earth’s surface is not stable or permanent. The tectonic plates that form our planet’s outer crust are constantly moving around,...

This Catalyst article looks at orchids, their breeding, and why they have great commercial value. The family of Orchidaceae is one of the largest plant families, with about 900 genera and 25,000 species. Orchids are amongst the oldest flowering plants. After a long evolution, they have developed a very intimate...

Produced by Twig, this animated video is a clear and accessible explanation of how the Solar System fromed. The video describes how:

* the solar system grew from a ball of gas which formed the Sun

* gravity caused heavy material to cluster together and eventually form planets

* the inner...

This series of activities from NASA take a mathematical approach to looking at black holes. They are intended as supplementary problems for students looking for additional challenges in the maths and physical science post-16 curriculum. Problems consist of a student page and an answer sheet. Students need to be...

Black holes provide an important tool for testing the fundamental laws of the universe. This resource from the Institute of Physics, looks at the extreme physics associated with black holes, how we can spot them, and what roles they may play in galaxy formation.

This guide looks at stellar black holes and...

This article explores the relationship between black holes and gravitational waves.

Catalyst is a science magazine for students aged 14-19 years. Find out more about Catalyst magazine: www.stem.org.uk/catalyst