TED-Ed
TED-ED: How do drugs affect the brain? - Sara Garofalo
Most people will take a pill, receive an injection, or otherwise take some kind of medicine during their lives. But most of us don't know anything about how these substances actually work. How can various compounds impact the way we...
Curated Video
GCSE Biology - Structure of a Leaf and Stomata #50
In this video we cover how plants are organised, and then take a closer look at the leaf. We consider the different parts of a leaf and how it is adapted for its functions. We re-uploaded this video as the original had some unedited...
Curated Video
NASA in Silicon Valley: Sharmila Bhattacharya on Studying How Biology Changes in Space
A conversation with Sharmila Bhattacharya, senior scientist in the Space Biosciences Research branch at NASA's Ames Research Center in Silicon Valley.
Curated Video
GCSE Biology - DNA Part 1 - Genes and the Genome #63
In this video we recap chromosomes and then explain what DNA is, what genes and the genome are, and how we can use them to track the migrations of early humans.
Schooling Online
Biology Skills: Accuracy
The royal archery contest begins! Everyone expects Robin Hood to win, since he is an accurate and reliable archer. But what do the terms accuracy and reliability mean? This lesson will explore accuracy and systematic errors, including...
Curated Video
GCSE Biology - What is Cancer? 'Benign' and 'Malignant' Tumours Explained #43
Benign and malignant tumours are very different problems. In fact only malignant ones are considered tumours. Find out why, and explore the risk factors for cancer.
Schooling Online
IB Biology Skills: Accuracy
The royal archery contest begins! Everyone expects Robin Hood to win, since he is an accurate and reliable archer. But what do the terms accuracy and reliability mean? This lesson will explore accuracy and systematic errors, including...
Curated Video
GCSE Biology - What Is a Virus? - Examples of Viral Disease (HIV, Measles & TMV) #36
This videos covers what viruses are and how they cause disease; specifically, we consider the cause, symptoms and treatments of Measles, HIV and Tobacco Mosaic Virus (TMV).
Curated Video
GCSE Biology - Sexual vs Asexual Reproduction - What is Asexual Reproduction? #71
How do organisms reproduce? Well it depends on the organism. We explore the two main types - sexual and asexual and consider the consequences of each.
Curated Video
GCSE Biology - Osmosis #8
In this video, we cover: - What osmosis is - How osmosis works - How to understand water concentration Exam board specific info: AQA - Suitable for everyone IGCSE Edexcel - Suitable for everyone Edexcel - Suitable for everyone OCR 21st...
Curated Video
GCSE Biology - Genetic Engineering #82
Genetic engineering allows us to move genes between different organisms and even different species. This has revolutionised agriculture and potentially saved millions of lived. Learn how it all works and why some people still don't like it.
Curated Video
GCSE Biology - What is Microscopy? #5
In this video, we cover: - The different parts of a microscope - What the terms image, object, magnification and resolution mean Exam board specific info: AQA - Suitable for everyone IGCSE Edexcel - Suitable for everyone Edexcel -...
Curated Video
GCSE Biology - What are DNA Mutations? #67
This video covers: - What genetic mutations are - What causes mutations e.g. carcinogens and harmful radiation - What the consequences can be - The 3 types of mutations: substitution, addition, deletion Exam board specific info: AQA -...
Curated Video
GCSE Biology - What Are Bacterial Diseases? - Treatment and Prevention #37
We cover the bacterial diseases Salmonella and Gonorrhoea. Learn their causes, symptoms and treatments.
Curated Video
GCSE Biology - Gas Exchange and Lungs #26
Learn how the lungs and alveoli are adapted to carry out gas exchange.
Curated Video
GCSE Biology - Why We Inherit Diseases From Our Family - Polydactyly & Cystic Fibrosis #75
In this video we take a look at the conditions polydactyly and cystic fibrosis, and use genetic diagrams to see how they can be inherited.
Curated Video
GCSE Biology - What is IVF? How Does IVF Work and What Are The Risks? IVF Explained #62
Learn how we can boost fertility using the hormones LH and FSH, with a focus on 'In Vitro Fertilisation' - including how it works and it's pros and cons.
Curated Video
GCSE Biology - Control of Blood Glucose Concentration #56
Learn how the body controls it's blood glucose concentration using the hormones insulin and glucagon. We'll also see how these two hormones interact in a negative feedback loop.
Curated Video
Biology - How the Kidneys Work - (Kidneys Part 1/3) #27
This video covers: - The 3 main functions of the kidneys: 1) removing waste, 2) regulating levels of ions, and 3) regulating levels of water - How the kidneys can achieve all of this using filtration and selective reabsorption - How...
Curated Video
GCSE Biology - What Is The Difference Between Light And Electron Microscopes? #6
In this video, we cover: - How light microscopes work - How electrons microscopes work - The pros and cons of each Exam board specific info: AQA - Suitable for everyone IGCSE Edexcel - Suitable for everyone Edexcel - Suitable for...
Curated Video
GCSE Biology - Type 1 vs Type 2 Diabetes - What is Diabetes and How to Treat It #57
Type 1 and type 2 diabetes are both caused by problems with insulin. Learn the differences between the two and how we can treat them.
Curated Video
GCSE Biology - Transport in plants - Translocation (Phloem) and Transpiration (Xylem) #51
Learn how plants transport sugars via the phloem (translocation) and water via the xylem (transpiration) between the roots and leaves. We also cover the factors that affect the rate of transpiration: light intensity, temperature,...
Curated Video
GCSE Biology - Plant Hormones - Uses of Auxin, Gibberellin and Ethene #53
This video covers: - How we can use plant hormones to control growth in plants - How we can use Auxins to stimulate plants to grow, or kill weeds - Uses of Gibberellin to control dormancy, induce flowering and grow larger fruit - How we...
Curated Video
GCSE Biology - Photosynthesis #48
Photosynthesis. What is it? How does it work? Why do plants do it? What is all that glucose used for?
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