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bio coursework help

Asked by abeda | Mar 27, 2007 | A Level > Biology > Coursework
abeda
abeda asks:

ok, i have a few questions.

1. what would be a good method to find out how different species of plants effect the rate of starch synthesis in destarched leafs discs?

2. could someone name few species of plants found in the uk.

3. would the prediction " different species of plants effect the rate of starch synthesis in destarched leaf discs differently" then i could say after my results how they differed or guess coz obviously i dont know this.

any suggestion or anything (please) will help. this is duw in a few days and there is no first draft etc. n apparently my coursework is more for first year of uni, so its very hard.

please please help.


etutor answers:
I can't believe that this coursework is university level, as it appears to be a very weird experiment. I don't see the point of comparing starch synthesis in different species! There is no hypothesis possible because there is no known relationship between plant species and rate of starch formation. Leaves with a bigger surface area would produce more starch,in total, but just because they are bigger! There are thousands of species of plant in Britain!!! Possible ones that are fairly easy to use include geranium, primula, pansy - these will probably be available at garden centres. I really think you need to discuss tghis with your teracher, to try to find out exactly what the point of this experiment is! What general priciple is he/she expecting to establish? (Because I can't see one!).

8 student responses

abeda
abeda

i've done it and possiblt failed it coz wot you said was wot everyone was saying.

thanks anyway.

responded Mar 29, 2007 1:02:40 PM BST
A1iyah
A1iyah

i'm doing more or less the same coursework and using geraniums (grow inside), Radish seedlings (small and grow outside), broad beans, and sunflowers (grow outside). hw are u planning to measure the rate of starch synthesis?

responded Apr 17, 2007 10:32:38 PM BST
danjellis
danjellis

im really not sure how to measure the rate of starch synthesis!

responded Apr 18, 2007 4:46:43 PM BST
danjellis
danjellis

im really not sure how to measure the rate of starch synthesis!

responded Apr 18, 2007 4:51:25 PM BST
zabe khurram
zabe khurram

are you sure this is for uni

responded Apr 25, 2007 8:51:52 PM BST
bmack
bmack

This coursework isn't university level, it's A level. I'm also doing the different species of plants, but can't find anything. Maybe the cells inside the leaf are adapted to uptake more glucose if the plants they come from are bigger, as they will need more energy for active transport etc?

responded Apr 29, 2007 2:34:43 PM BST
shaun_holley56
shaun_holley56
How would you measure the rate of starch synthesis? help!
responded May 5, 2007 10:10:53 AM BST
Hazyknuf
Hazyknuf

heya you can use the disks and have say 20 then you take one out and boil it in water then in ethanol then add iodine.  You then put it in a colorimeter and measure the transmission and that will show you the concentratyion of starch found in the leaves. repeat that 5 mins or so later for next disk etc

responded May 13, 2007 6:11:59 PM BST
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abeda
abeda
Last online Thu Mar 29 2007 1:5 PM GMT
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