Circulatory System: Alveoli 🫁 GCSE Biology L...

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

In this episode, we will discuss plant hormone uses and light investigation.Plant hormones are valuable tools in agriculture and horticulture, manipulating plant growth for various purposes. Auxins find use as herbicides and rooting agents, whilst ethene regulates fruit ripening. ...  Show more

This episode reviews the topic of human gas exchange including: The process of breathing, the role of the alveoli in gas exchange and the effects of smoking on the respiratory system. This episode is suitable for all examination boards but more specifically geared to IGCSE Edexce ...  Show more

Respiratory system for USMLE 

Respiratory system for the USMLE

Every time you breathe, air travels down the trachea through a series of channels, and then reaches little clusters of air sacs in the lungs. These tiny sacs facilitate a crucial exchange: allowing oxygen from the air we breathe into the bloodstream and clearing out carbon dioxid ...  Show more