GCSE Biology - Rate of Reaction

In this episode, we will discuss the alveoli in the circulatory system.Alveoli are microscopic air sacs within the lungs where the crucial exchange of oxygen and carbon dioxide occurs between air and blood through diffusion. Their structure is highly adapted for this vital proces ...  Show more

In this episode, we look at transportation in cells. We will explain how substances move into and out of cells, highlighting three key mechanisms. Diffusion is described as the movement of particles from high to low concentration areas. Osmosis is presented as a specific type of ...  Show more

Richard looks at displacement reactions for your GCSE Chemistry exam. In this episode, he will look at when and why displacement reactions occur. Suitable for AQA, OCR, Edexcel, CIE and WJEC exam boards. Ideal for preparing your GCSE Chemistry</ ...

Richard looks at acids, alkalis & redox reactions for your GCSE Chemistry exam. In this episode, he will look at what acids and alkalis are and how electrons are transferred in redox reactions. Suitable for AQA, OCR, Edexcel, CIE and WJEC exam boards. Ideal for preparing y ...

Don’t panic - it’s organic! In this additive-free episode, Jono covers EVERYTHING you need to about organic chemistry for your GCSE chemistry exam. Not to be CRUDE, but this episode is CRACKING. Saturate your brain with knowledge as Jono covers alkanes, alkenes, fractional dis ...

This week, Emma's got the lowdown on facilitated diffusion and polarized membranes for your AP Bio exam. She looks at how molecules diffuse through carrier proteins or channel proteins in membranes. Perfect for AQA, Edexcel and OCR exam boards. Ideal for preparing you for your A ...  Show more