Homogenisation - Study guides, Revision notes & Summaries
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AQA A level Biology 2022/2023 AQA with verified questions and answers
- Exam (elaborations) • 13 pages • 2023
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Explain why plasma membranes are said to have a fluid mosaic structure. 
1. Fluid because the phospholipids are constantly moving. 2. Mosaic because the proteins are scattered throughout the membrane-like tiles in a mosaic. 
 
 
 
What effect does cholesterol have on the cell membrane? 
1.Cholesterol molecules fit between the phospholipids and bind to the hydrophobic tails of the phospholipids. 2.Causes them to pack together more closely, restricting the movement of other molecules in the membra...
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Bioprocess engineering steps Questions and Answers
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Bioprocess engineering steps Questions and Answers 
As excess water and waste is removed, what happens? - CORRECT ANSWER-Volume 
decreases, purity increases 
Biochemical methods of cell disruption - CORRECT ANSWER-Enzymatic digestion 
Chromatography - CORRECT ANSWER-The separation of components of a mixture by 
difference in rates of movement 
Examples of bio processing - CORRECT ANSWER-MSD Brinney Cork- genetically 
engineered E. coli used to produce interferon alpha 2 beta to treat hepatitis a...
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Dissertation 2023- PMI Estimation: Conductivity
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This is my dissertation from last year for Forensic Science and Molecular Biology MSci. I got the grade of 69%. 
 
The main focus of the experiment in the dissertation was to discover if electrical conductivity of a pig pancreas can be used to estimate time of death over a 2 week period. This document has statistical analysis and an in-depth literature review of other studies. It was a very interesting topic to study and had never been done before (or at least not been documented) on pig tissue!...
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Introduction to Communication Science - Partial exam 1 Question and Answers
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Introduction to Communication Science - Partial exam 1 
Question and Answers 
Theory - Correct Answer:A systematic framework of ideas, concepts, and principles that seeks to explain and predict natural or social phenomena. Providing a way to understand and make sense of observed patterns, relationships, and behaviours. 
 
What does a theory do? - Correct Answer:- Helps to understand 
- Influence how we see certain things, emphasising certain aspects. 
- Guides us and shows a framework. 
 
4 tre...
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AQA A level Biology Revision Questions
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Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, 
such as sucrose. [3] - ,first reducing sugars test; boil with dilute HCl acid then Neutralise with 
NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present 
Describe a chemical test you could carry out to show that a piece of coconut contains lipids. [3] - 
(Crush in) ethanol / alcohol; Add (to) water (Order of adding is critical for this point); Emulsion...
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AS/A Level Biology, Unit 2A - Cell Organelles
- Summary • 1 pages • 2023
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Contains all the cells you need to learn for A Level Biology using different sources to make sure all the information is contained. Also includes information about Homogenisation and the steps involved as well as prokaryote and binary fission.
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AQA A level Biology Revision Questions.docx
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Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - correct answer ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present 
 
Describe a chemical test you could carry out to show that a piece of coconut contains lipids. [3] - correct answer (Crush in) ethanol / alcohol; Add (to) water (Order of adding is critic...
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AQA A level Biology Revision
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AQA A level Biology Revision 
 
. [2] - Answer- Active site / enzyme not complementary; Active site changes (shape) / is flexible; (Change in enzyme allows) substrate to fit / E-S complex to form; 
 
Describe one way that the lock and key model is different from the induced fit model. [1] - Answer- Active site does not change (shape) / is fixed (shape) / is rigid / does not wrap around substrate / (already) fits the substrate / is complementary (before binding); 
 
Explain why the rate of reacti...
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Culturally Responsible Tourism
- Presentation • 33 pages • 2022
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Culturally Responsible Tourism Presentation is about contemporary tourism, responsible tourism, characteristics of responsible tourism, whose responsibility, culturally responsible behaviour, the culturally responsible tourist (CRT), promoting culturally responsible tourist, CRT Education, globalisation and culture, cultural homogenisation, managing negative effects of globalisation in tourism, rules and guidelines for tourism responsible behaviour, understanding foreign rules of behaviour, code...
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Microscopy and Ultracentrifugation notes
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Notes and diagrams showing how optical microscopes, scanning electron microscopes and transmission electron microscopes work. Containing specifications, resolutions, magnifications and conditions for use for each microscope type, allowing for comparison as well as knowledge about each individually. Additionally, these notes have information on artefact introduction for microscopes and the usefulness of staining microscopy samples. There is also a diagram describing the processes of ultracentrifu...
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