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High powered image of T Cells attacking cancer cells. Eukaryotic cells  In this post Jayne explains the names and functions of the organelles in a eukaryotic cell. As an A level Biology student, you may be asked to explain the relationship between the functions of different organelles in a eukaryotic cell. As long as you know the functions of individual organelles, you can soon see how they ...
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A high power image of bacterial cells. Comparing Eukaryotic and Prokaryotic Cells In this post Jayne explains how to compare and contrast Eukaryotic and Prokaryotic cells. At A Level there is often a question asking you to give the differences between the two types of cells. Interestingly, the word 'eu' means 'true' and the word 'karyon' refers to 'nucleus.' So 'Euka...
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Explaining Biology Clearly - you tube.  Jayne now has a youtube channel where she is sharing her "no frills" explanations of the major biological ideas, concepts and knowledge to be found in the current A level courses.  These are simple, no frills explanations produced live by Jayne with her pen, her whiteboard and her calm, clear, ...
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Carbohydrates in one form or another are found in in very many foods. Carbohydrates or "Carbs" are not only essential components of a balanced diet, providing energy and fibre, but can also provide the raw materials to produce useful, biodegradable "eco"polymers .  Jayne explains.. The truth about carbs - NHS Carbohydrates are the body's main source of energy, but the idea that "car...
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Biodiesel: used cooking oils and fats can be used as an alternative to fossil fuels to power vehicles.  In this post, Jayne gives examples of different types of lipids and explains what they are composed of and their corresponding functions in the human body. There are different types of Lipid found in living organisms. Triglycerides, phospholipids and sterols are those you are likely to come across at A Level. A typical question may ask you to descr...
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 An image of a virus particle Viruses cause diseases such as the common cold, COVID-19, mumps, measles, HIV and Polio to name but a few. It is common at A Level to be asked why viruses are classed as 'non-living' or why antibiotics are not used when someone is infected by them. In this post, we will discuss the answers to t...
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