Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Identifying Variables Independent Dependent Control Enzyme concentration - in my experiment, I used different concentration of enzymes (1%, 0.75% 0.5% 0.25%) to see how the rate of reaction affects by the concentration of enzymes Rate of reaction - time taken milk to be cleared - temperature ( room temperature) PH - I didn't control it and it might have changed Volume of enzyme - 5cm3 Volume of substrate which is marvel casein - 5cm3 Start timing as soon as enzyme's added Shake the concentration of marvel and enzyme gently and occasionally which is not very controlled What are the reasons for controls? * We did the experiment at the same temperature of room temperature the reason that temperature affects the rate of reaction. In fact over a range or 0 - 40 degree the rate of an enzyme controlled reaction doubles for every rise of 10 degree. Because according to Collision theory, heat increases molecular motion, thus the reactants...

Get instant access

• Instant, unlimited access to our documents in full
• Swap your work for free access, or pay £4.99
• To see the full version of this document and 147,309 others

OR

Receive email updates for this category

• Simply tell us your email address and receive a weekly Study Help Email for FREE
• Receive 3 FREE essay views with each email
• Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk