Snab Biology https://snabbiology.co.uk/ All 18 Core Practicals Thu, 05 Jan 2023 03:05:53 +0000 en-GB hourly 1 https://wordpress.org/?v=6.5.2 Resource Recommendations https://snabbiology.co.uk/resource-recommendations/ https://snabbiology.co.uk/resource-recommendations/#respond Sun, 11 Jun 2017 14:17:37 +0000 https://snabbiology.wordpress.com/?p=1412 The resource I recommend the most is the SNAB Biology A Revision Guide. Slimmer than the standard textbooks, this revision guide includes concise yet accurate notes on topics 1 to 8, tips on how to improve your exam skills & technique, and a good amount of sample questions to test your knowledge. You may have...

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]]> https://snabbiology.co.uk/resource-recommendations/feed/ 0 Investigating Habituation to a Stimulus https://snabbiology.co.uk/investigating-habituation-to-a-stimulus/ https://snabbiology.co.uk/investigating-habituation-to-a-stimulus/#respond Fri, 19 May 2017 16:03:04 +0000 https://snabbiology.wordpress.com/?p=1363 Core Practical 18 – From Topic 8 (Grey Matter) Aim To investigate habituation to a stimulus in snails. Independent Variable The number of pokes with a cotton wool bud Dependent Variable Time taken for the eye stalks to reemerge from the shell (measured in seconds using a stopwatch) Control Variables Age and size – snails...

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]]> https://snabbiology.co.uk/investigating-habituation-to-a-stimulus/feed/ 0 Using A Spirometer To Measure Tidal Volume And Breathing Rate https://snabbiology.co.uk/using-a-spirometer-to-measure-tidal-volume-and-breathing-rate/ https://snabbiology.co.uk/using-a-spirometer-to-measure-tidal-volume-and-breathing-rate/#comments Thu, 18 May 2017 17:29:29 +0000 https://snabbiology.wordpress.com/?p=1329 Core Practical 17 – From Topic 7 (Run For Your Life) Aim To investigate the effects of exercise on tidal volume, breathing rate, respiratory minute ventilation and oxygen consumption using data from spirometer traces. Equipment Spirometer Kymograph Disinfectant Eye protection Soda lime How Does A Spirometer Work? The general principle behind a spirometer is simple....

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]]> https://snabbiology.co.uk/using-a-spirometer-to-measure-tidal-volume-and-breathing-rate/feed/ 1 Measuring The Rate Of Oxygen Uptake https://snabbiology.co.uk/measuring-the-rate-of-oxygen-uptake/ https://snabbiology.co.uk/measuring-the-rate-of-oxygen-uptake/#respond Wed, 17 May 2017 23:21:11 +0000 https://snabbiology.wordpress.com/?p=1271 Core Practical 16 – From Topic 7 (Run For Your Life) Aim To investigate the rate of respiration. Control Variables Number of organisms – 5g of maggots will be used Temperature – same temperature used for each setup Time – Recordings of volume increase will take place every minute for 5 minutes Equipment  Respirometer Soda...

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]]> https://snabbiology.co.uk/measuring-the-rate-of-oxygen-uptake/feed/ 0 The Effect Of Different Antibiotics On Bacteria https://snabbiology.co.uk/the-effect-of-different-antibiotics-on-bacteria/ https://snabbiology.co.uk/the-effect-of-different-antibiotics-on-bacteria/#comments Thu, 11 May 2017 19:57:09 +0000 https://snabbiology.wordpress.com/?p=1225 Core Practical 15 – From Topic 6 (Immunity, Infection & Forensics) Aim To investigate the effect of different antibiotics on bacteria. Independent Variable The type of antibiotic used Dependent Variable Zone of inhibition left by antibiotic (area measured in cm²) Control Variables Same concentraton of antibiotic used Type and amount of bacteria used – E.coli will be...

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]]> https://snabbiology.co.uk/the-effect-of-different-antibiotics-on-bacteria/feed/ 2 Gel Electrophoresis https://snabbiology.co.uk/gel-electrophoresis/ https://snabbiology.co.uk/gel-electrophoresis/#respond Thu, 11 May 2017 17:33:47 +0000 https://snabbiology.wordpress.com/?p=1186 Core Practical  14 – From Topic 6 (Immunity, Infection & Forensics) Aim To use gel electrophoresis to separate DNA fragments of different length. The use of gel electrophoresis: DNA profiling involves making millions of copies from a DNA sample via PCR firstly and then carrying out gel electrophoresis. This is useful in forensic science for...

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]]> https://snabbiology.co.uk/gel-electrophoresis/feed/ 0 The Effect Of Temperature On The Hatching Success Of Brine Shrimp https://snabbiology.co.uk/the-effect-of-temperature-on-the-hatching-success-of-brine-shrimp/ https://snabbiology.co.uk/the-effect-of-temperature-on-the-hatching-success-of-brine-shrimp/#respond Fri, 05 May 2017 18:18:25 +0000 https://snabbiology.wordpress.com/?p=1122 Core Practical 13 – From Topic 5 (On The Wild Side) Aim To investigate the effects of temperature on the development of brine shrimp and their hatch rates. Independent Variable Temperature of each sample (water baths at 10°C, 15°C, 20°C, 25°C and 30°C will be used) Dependent Variable The number of hatched shrimps Control Variables Amount...

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]]> https://snabbiology.co.uk/the-effect-of-temperature-on-the-hatching-success-of-brine-shrimp/feed/ 0 The Effect Of Temperature On An Enzyme-Catalysed Reaction https://snabbiology.co.uk/the-effect-of-temperature-on-an-enzyme-catalysed-reaction/ https://snabbiology.co.uk/the-effect-of-temperature-on-an-enzyme-catalysed-reaction/#respond Thu, 04 May 2017 20:46:23 +0000 https://snabbiology.wordpress.com/?p=1119   Core Practical 12 – From Topic 5 (On The Wild Side) Aim To investigate the effect of temperature on the initial rate of an enzyme-catalysed reaction. Independent Variable Temperature of each enzyme solution (water baths at 10°C, 20°C, 30°C, 40°C and 50°C will be used) Dependent Variable Time taken for the solution to turn...

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]]> https://snabbiology.co.uk/the-effect-of-temperature-on-an-enzyme-catalysed-reaction/feed/ 0 The Hill Reaction https://snabbiology.co.uk/the-hill-reaction/ https://snabbiology.co.uk/the-hill-reaction/#comments Tue, 02 May 2017 21:03:45 +0000 https://snabbiology.wordpress.com/?p=988 Core Practical 11 – From Topic 5 (On The Wild Side) Aim To investigate photosynthesis using isolated chloroplasts (the Hill reaction). Independent Variable Light intensity reaching the chloroplast samples Dependent Variable Amount of DCPIP reduced (can be judged based on the colour of the mixture) Control Variables Use chloroplasts from the same species of plant...

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]]> https://snabbiology.co.uk/the-hill-reaction/feed/ 1 Observing Patterns By Ecological Sampling https://snabbiology.co.uk/observing-patterns-by-ecological-sampling/ https://snabbiology.co.uk/observing-patterns-by-ecological-sampling/#respond Mon, 01 May 2017 19:15:08 +0000 https://snabbiology.wordpress.com/?p=954 Core Practical 10 – From Topic 5 (On The Wild Side) Aim To carry out a study on the ecology of a habitat, such as using quadrats and transects to determine distribution and abundance of organisms, and measuring abiotic factors appropriate to the habitat. *The set-up of this practical is at the discretion of your...

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