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:

Induction of Beta-galactosidase Aim: This investigation aims to induce and measure the production of the enzyme beta-galactosidase by E. coli. Scientific Background: Cells only express genes when the protein products they code for are needed, thus conserving energy and resources within the cell. The bacteria Escherichia coli (E. coli) can use different carbohydrates as a food source. If lactose, the disaccharide found in milk, is present in the growth medium it must be broken down into the monosaccharide glucose and galactose before it can be utilized as an energy source in respiration. E. coli has a gene for an enzyme called Beta-galactosidase that breaks down the lactose. The presence of the lactose switches on this gene so the enzyme is produced. Beta galactosidase is the enzyme responsible for the first step in the breakdown of lactose. Since beta-galactosidase is a protein, its structure is determined by the information stored in...

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 146,871 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