Human Nervous System: Eye Function 👁 - GCSE ...

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 yield for your GCSE Chemistry exam. In this episode, he will look at what yield is, how to calculate it and why it is never 100%. Ideal for preparing your GCSE Chemistry exam.

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This episode outlines various origins of drinkable water. We identify fresh water as the simplest source to purify, requiring only filtering and sterilization. In contrast, seawater desalination is presented as the most energy-intensive and costly method. Finally, the text notes ...  Show more

In this episode, we will discuss reaction pathways.Efficient chemical reactions are favoured for their cost-effectiveness and minimal waste generation, as highlighted by the concept of atom economy, which measures the proportion of reactants incorporated into desired products. Ho ...  Show more

Hellolololololo there my beautiful butterfly 🦋✨ In this video, your kind and gentle nurse (me) does your eye exam. I will be conducting a series of tests to monitor the condition and health of your eyes and sight. I will be greeting you and checking you into your eye appointm ...