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#33 Food test 4 - Biuret test for Proteins | Biology Notes for IGCSE 2014
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Biology Notes for IGCSE 2014. 33 Food test 4 - Biuret test for Proteins. The Biuret Test is done to show the presence of. Which are the basis for the formation of. Hese bonds will make the. Add an equal amount of NaOH. To a solution of the food, mix carefully. Add a few drops of 1% CuSO. Do not shake the mixture. Is a positive result:. The reagent used in the Biuret Test is a solution of copper sulfate. OH is there to raise the pH. Of the solution to alkaline. Levels; the crucial component is the. IGCSE ...
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#156 Food tests observations | Biology Notes for IGCSE 2014
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Biology Notes for IGCSE 2014. 156 Food tests observations. Test 1: Starch test. Test 2: Benedict’s test for Reducing sugars. No reducing sugars present. Trace amounts of reducing sugars present. Low amounts of reducing sugars present. Moderate amounts of reducing sugars present. Large amounts of reducing sugars present. Test 3 Emulsion (Ethanol test) for Fat. Test 4: Biuret Test for Proteins. May 4, 2016 at 9:08 AM. October 14, 2016 at 11:25 AM. Subscribe to: Post Comments (Atom). UK Law Revision Notes.
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#139 Food chain | Biology Notes for IGCSE 2014
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Biology Notes for IGCSE 2014. Is a chart showing the flow of energy. Food) from one organism to the next beginning with a producer. A food chain usually starts with a. Which gains its energy from the Sun. Used to link each organism to the next represent the direction of energy flow. They always points towards the ‘eater’, and away from the plant. The feeding level is known as the. They make/produce food for other organisms). Animals that eat plants are primary consumers. May 10, 2015 at 5:46 AM. IGCSE Ch...
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#81 Question 4 | Biology Notes for A level
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Biodiversity, classification, conservation. The diagrams below show five molecules found in living organisms. Give the letter of one molecule that fits each of these descriptions. You can use each letter once, more than once or not at all. The form in which carbohydrates are transported through phloem tissue in plants. The form in which carbohydrates are stored in animals. A molecule that is insoluble in water. A molecule that links together with others to form a polypeptide. B) In a water molecule, the ...
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#82 Question 5 | Biology Notes for A level
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Biodiversity, classification, conservation. The diagram below shows a small part of a human lung as it appears through a microscope. Name the type of blood vessel in which the red blood cell is present. Describe and explain two ways in which the structure of the alveoli, shown in the diagram, enables gas exchange to take place rapidly. Explain why large organisms such as mammals need specialised gas exchange surfaces, whereas small organisms such as a single-celled Amoebo do not. This is correct. 1/1.
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#80 Question 3 | Biology Notes for A level
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Biodiversity, classification, conservation. The diagrams show a cell in various stages ofthe mitotic cell cycle. Name the stage represented by each diagram, and arrange them in the correct sequence. Describe the role of spindle microtubules in mitosis. (3 marks). The graph below shows the changes in the mass of DNA per cell and total cell mass during two cell cycles. Different vertical scales are used for the two lines. Describe the roles of mitosis In living organisms. A metaphase, ü. B prophase, ü.
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#55 Infectious diseases and Antibiotics | Biology Notes for A level
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Biodiversity, classification, conservation. 55 Infectious diseases and Antibiotics. An infectious disease is one that can be passed between one person and another. Infectious diseases are caused by pathogens. These are usually microorganisms such as viruses, bacteria, fungi or protoctists. A non-infectious disease cannot be passed between people and is not caused by pathogens. Examples include sickle cell anaemia and lung cancer. Cholera is caused by a bacterium, Vibrio cholerae. Which inject saliva to p...
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Business Studies Notes For IGCSE: Interesting Reads
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Business Studies Notes For IGCSE. Here's a list of books I have read and found interesting, and maybe you will love it too! If I have time, I'll write a review for these later. If you guys find a particularly good book please share it with everyone in the comments below. Thanks! The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change. PDF version can be found here. A Short History of Nearly Everything. One Summer: America, 1927. Why Do Drug Delars Still Live with Their Moms? Blog: ht...
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Introduction | Biology Notes for IGCSE 2014
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Biology Notes for IGCSE 2014. Hello, this is the summary of IGCSE Biology (Cambridge) for 2014 exam. As a student, I have always enjoyed learning Biology and want to make it a fascinating subject for others as well! As references, I am using the following books. And other resources from Internet, including:. Credits to authors of pictures used for illustration purpose on this blog. I'm no expert on Biology so just feel free to leave a comment or any suggestions that could help me improve this blog. Thank...
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Business Studies Notes For IGCSE: August 2012
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Business Studies Notes For IGCSE. Saturday, August 25, 2012. Chapter 1: The purpose of Business Activity. The economics problem: needs and wants. Basically, all humans have needs. Needs are things we cant. Live without, while wants are simply our desires that we can. Live without. We all have unlimited wants. Which is true, since all of us want a new PC, a car, new graphics card, etc. that we actually do not need to live. Businesses produce goods. To satisfy needs and wants. Are people who combine. Almos...
