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Evaluation: Osmosis on potato cylinders

Asked by sheep2684 | Jul 8, 2003 | GCSE Level > Biology > Coursework
sheep2684
sheep2684 asks:

According to the AQA syllabus, to gain the E.6b mark on my evaluation i need to, "describe, in detail, further work to provide additional relevant evidence".
What further investigation should i talk about to gain this mark and could you please explain how this is relevant . The investigation you suggest must be linked to Osmosis.
THANKS FOR READING THIS! :)

etutor answers:
The trouble is, the firther investigation has to be linked with the ACTUAL investigation you have done, not just with the same topic (i.e. osmosis). You do not say exactly WHAT variable to do with osmosis that you have investigated, or have you just investigated 'factors' that affect osmosis?
If you have just investigated factors, then you could describe an experiment to investigate a SECOND factor, e.g. if you have investigated surface area, you could investigate substrate concentration. Your description of the experiment would have to be detailed, though, e.g. apparatus, method (including control of variables).
If your investigation is (e.g.) specifically on surface area, then you would have to do a further investigation which is specifically to do with surface area. For example, if you have 'measured' surface area by just how many discs a potato cylinder is cut up into, you could measure tha actual surface area to try to establish a mathematical relationship between surface area and rate of reaction.
If this does not help, you will need to send in more details of exactly what you investigated and how, so I can give more specific help.

7 student responses

Shahzadee
Shahzadee
Hi
responded Aug 19, 2003 8:18:37 PM BST
Blaze301
Blaze301
hi
responded Aug 23, 2004 5:01:52 PM BST
carla isari
carla isari
hi!!
responded Jun 6, 2005 7:13:37 PM BST
yungcent
yungcent

hi

responded Nov 10, 2005 6:03:15 PM GMT
aderemi67
aderemi67

help on result for osimosis

 

responded Dec 7, 2005 2:00:02 PM GMT
Jenny2
Jenny2
Hi
responded Jan 8, 2006 11:12:42 PM GMT
beauty56
beauty56

POPOOLA U CANT EVN SPEL OSMOSIS PROPERLY NE WAY WAT DO WE AVE 2 INCLUDE 4 DA OSMOSIS COURSEWORK

responded Apr 16, 2006 4:44:48 PM BST
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