20: Excretion (IGCSE/GCSE)

This episode reviews the topic investigating biological molecules, including: How to test for the presence of reducing sugars, non-reducing sugars, starch, proteins and lipids. This episode is suitable for all examination boards but more specifically geared to AQA A-Level Biology ... Show More

This episode reviews the topic of Proteins, including: The structure of an amino acid and the formation of a peptide bond, the levels of the protein structure and the relationship between the structure and the function of proteins. This episode is suitable for all examination boa ... Show More

This episode reviews the topic of Lipids, including: the structure and the roles of Triglycerides and Phospholipids. This episode is suitable for all examination boards but more specifically geared to AQA A-Level Biology. 

In this episode, we’ll explore homeostasis, the process organisms use to maintain stable internal conditions. We’ll discuss how this regulation is essential for responding to changes in both internal and external environments. Using enzyme function as an example, we’ll examine ho ... Show More

In this episode, Jamie explores the fascinating world of prokaryotic cells, focusing on their unique features such as plasmids, the absence of mitochondria and chloroplasts, and their distinctive way of storing genetic material. This discussion is particularly valuable for studen ... Show More

Liz looks at thermoregulation for your GCSE Biology exam. In this episode, she will look at how the changes to body temperature are detected and what the responses to these temperature changes are. Liz looks at the role of receptors and blood vessels in thermoregulation. Perfect ... Show More

In this episode, Jamie investigates the role of protists as single-celled, eukaryotic parasites and how they cause diseases such as malaria. Learn how protists interact with vectors and the severe impacts they can have on their hosts. Don't miss out on subscribing for more ed ... Show More

In this episode, Jamie explores the intriguing nature of fungi, including their structure and how they spread, with a focus on the fungal disease rose black spot. Discover how this disease affects plants and the approaches to managing its impact. Don't miss out on subscribing ... Show More

Emma goes through the different types of plant hormones for your GCSE Bio exam. She looks at the role auxins, gibberellins and ethene as hormones in plants. Perfect for AQA, Edexcel, OCR, WJEC and CIE exam boards. Ideal for preparing you for your GCSE Biology exam. Click here for ... Show More

In this episode, we’ll describe the human nervous system, focusing on its role in responding to environmental changes. We’ll talk about the system's key components: the brain, the spinal cord and the neurones. The entire system works together to protect the organism. We’ll di ... Show More

In this episode, we’ll explore the distinct characteristics of prokaryotic cells and what sets them apart from more complex cell types. We’ll discuss the presence of plasmids—small DNA rings that enable genetic information exchange. We’ll examine how prokaryotic cells lack membra ... Show More

In this episode, we’ll explore the fundamental building blocks of life: cells. We’ll distinguish between the two main cell types—eukaryotic and prokaryotic. Eukaryotic cells, found in organisms like plants and animals, are typically larger, while prokaryotic cells, such as bacter ... Show More

In this episode, Jamie delves into the world of bacteria, explaining how they cause harm and discussing examples such as Salmonella and Gonorrhoea. Learn about how these bacterial diseases spread and the measures we can take to prevent infection. Don't miss out on subscribing ... Show More