IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: chiwawa on June 07, 2009, 03:08:50 pm

Title: biology
Post by: chiwawa on June 07, 2009, 03:08:50 pm

P3 oct/nov 2005 second variant
Q.6c

Title: Re: biology
Post by: magician007 on June 07, 2009, 03:39:53 pm

you have to talk about that intracellular and extracellular enzyme crap...

points you have to talk about are that:

-you need a fermenter
-you need a source from where enzymes can be collected (eg yeast)
-you need a feedstock which contains molasses
-conditions - 27 celsius and alkaline pH
-mention a paddle to stir liquid

then finally say what is required to obtain intra/extracellular

intra - feedstock filtered, microorganisms filtered. its then crushed and extracted
extra - feedstock filtered and extracted

thats it...write this and u are assured full marks on any type of this question