Beetroot practical - Study guides, Revision notes & Summaries

Beetroot practical

Biology: Edexcel Ial Unit 3 - Past Paper Qustions With Complete Solutions Variables that should be controlled in the beetroot practical and how this could be done. 1) volume of water (in the boiling tube) ; 2) suitable method e.g. measuring cylinder/pipette / eq. 3) reference to rinsing; 4) until clear/fixed time for all. 5) similar {variety/density/eq} of beetroot. 6) method to ensure same variety e.g. same beetroot. 7) pre-treatment e.g. storage. 8) detail of above. 9) (use same) ...

1. Why do we use beetroot cells to measure the effect of different variables on membrane permeability? 2. If a lot of pigment leaks out, what does this tell us about the membrane permeability? 3. If only a little amount of pigment leaks out, what does this tell us about membrane permeability? - ANSWER1. Because beetroot cells contain a coloured pigment (dark red/ purple), that leaks out. 2. High membrane permeability 3. Low membrane permeability State the independent variable, d...

Students’ Lab Book for AQA AS & A-Level Biology 7401/7402 Covers the complete CPAC requirements for the investigation skills relevant to examinations 2 CONTENTS How to use this Lab Book – notes to teachers 9 - notes to students 12 - Practical and mathematical skills grid 13 Skills development requirements 14 Mathematical requirements & exemplifications 16 Glossary of terms 19 Suggested templates for skills development 21 (research, planning, concluding & evalu...

CONTENTS How to use this Lab Book – notes to teachers 9 - notes to students 12 - Practical and mathematical skills grid 13 Skills development requirements 14 Mathematical requirements & exemplifications 16 Glossary of terms 19 Suggested templates for skills development 21 (research, planning, concluding & evaluating) Data Tables 27 Significant figures 28 Uncertainties 29 Graphs/Bar Charts/Histograms 32 Biological drawings 41 Statistical tests 43 PART 1 AS and A-Level Investigati...

A guide for Biology practicals at AS- a summary of practical investigations from across the year. This is designed for AS3, but involves content from across the course. Colour coded document. Includes the following: Biochemical Food Tests Chromatography and Rf Values Effect of Temperature, pH, and Enzyme Concentration on Enzyme Action Dilution (Simple and Serial) Using a Colorimeter (including Calibration Curves) The Impact of Temperature on the Permeability of Cell Membranes in Beetroot...

2.5 Biological Membranes YOUR NOTES 2.5.1 THE CELL SURFACE MEMBRANE Roles of Membranes Membranes are vital structures found in all cells The cell surface membrane creates an enclosed sp ace separating the internal cell environment from the external environment Intracellular membranes (internal membranes) form compartments within the cell, such as organelles (including the nucleus, mitochondria and RER) and vacuoles Membranes not only separate different areas but also control the exchange of mate...

The information provided discusses a series of laboratory practical tests designed for AQA Biology students. These tests cover topics such as membrane permeability using beetroot pigment release and investigating the effectiveness of antimicrobial substances on bacterial growth, providing hands-on experience aligned with the AQA Biology curriculum.The document contains detailed procedures for various AQA Biology practical experiments, including steps for conducting each experiment, identifying i...

Full CPAC 3 write up which achieved passing grade and fulfilled all necessary criteria for Biology Edexcel