Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
Investigating how sugars are metabolised by yeast
Member rating: No Rating | Words: | Submitted: Mon Mar 21 2005
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Investigating how sugars are metabolised by yeast. Aim The aim of this experiment is to investigate which of the five different forms of sugars namely; glucose, fructose, sucrose, maltose and lactose undergo the most metabolisms by yeast. Variables Independent Variable Type of sugar Controlled Variables Temperature of water Amount of yeast Time of reaction Dependant Variable Amount of Carbon dioxide produced during the metabolic reaction Apparatus List Electronic Stopwatch Thermometer 10cm³ syringe Burette Thin rubber tubing Hot Water bath Stirring rod Clamp Stand Diagram Method * Prewarm Yeast and sugars in water bath at fixed temperature of 50°C. * When reached at required temperature, measure out 6cm³ of yeast, with the help of a syringe, as well as 10cm³ of glucose solution, first. * Pour into a boiling tube and fit with the rubber tubing. * Take the other end of the tubing and place under the upturned burette,...
To see the full version of this document, and 144,847 others
