Search found 11 matches

by Jesskat14
Thu Apr 07, 2005 1:14 pm
Forum: General Discussion
Topic: A2 biology coursework
Replies: 18
Views: 42533

Just because there's an experiment doesn't mean it's gonna be interesting! :wink:
Loads of the expeiments i did were to do with how well an enzye catalyses a reaction, which meant cutting up loads of liver :? Considering i'm vegetarian i didn't really appreciate it! :wink:
by Jesskat14
Thu Apr 07, 2005 1:12 pm
Forum: Genetics
Topic: Quadrats
Replies: 1
Views: 12264

The gridded frame would be better than the point quadrat as it gives percentage cover which is easier to analyse. It doesn't matter how tall the plants are because you would look at where the roots are in the quadats ad so it would be easy to determine whether they are in the quadrat or not. Sorry n...
by Jesskat14
Thu Apr 07, 2005 1:09 pm
Forum: General Discussion
Topic: quadrat investigation
Replies: 19
Views: 22582

I'm going to have to write it out in words because I can't put the symbols in! T = The modulus of x1 - x2, where x1 and x2 are the means of the 2 populations. all divided by the square root of: ( the variance (sd squared) of population 1 divided by the number of measurements in population 1) + (the ...
by Jesskat14
Tue Apr 05, 2005 12:27 pm
Forum: General Discussion
Topic: A2 biology coursework
Replies: 18
Views: 42533

I prefer it because you can get relatively easy marks and get a better grade YAY!! :D
by Jesskat14
Tue Apr 05, 2005 11:48 am
Forum: General Discussion
Topic: A2 biology coursework
Replies: 18
Views: 42533

You know the 16-18 education? its called AS for the 1st year and A2 for the second year.
Do you have coursework in America? I don't wanna sound patronising! It's like a REALLY long essy with an experiment in it! :)
That help? :P
by Jesskat14
Tue Apr 05, 2005 11:42 am
Forum: General Discussion
Topic: A2 biology coursework
Replies: 18
Views: 42533

Our coursework was on microbes and disease. We had E. coli and S.albus and grew them in a bacterial lawn. Then we placed on discs of penicillin and streptomycin and compared the effect with statstical tests etc.
Does tht help?

Ps. Our teacher gave us help, have you been given an aim or anything?
by Jesskat14
Mon Apr 04, 2005 1:05 pm
Forum: Cell Biology
Topic: Respiration and Kreb's Cycle
Replies: 2
Views: 9973

I hope I can write this in a way that makes sense! You have Acetyl coenzyme A (2 carbons) from the link reaction. The Acetyl coenzyme A binds with an acid acceptor (4 carbons) producing an acid (6 carbons). 2 molecules of CO2 are removed producing the initial acid acceptor (4 carbons) and is able to...
by Jesskat14
Mon Apr 04, 2005 12:42 pm
Forum: General Discussion
Topic: quadrat investigation
Replies: 19
Views: 22582

I would say to use square quadrats and then use a percentage cover of each quadrat. Point quadrats would take other species of plant into account. For the number it depends on the length of the transect, and for the size of the quadrat 1 metre square would probably be ok. When I did an ecology case-...
by Jesskat14
Sun Apr 03, 2005 2:49 pm
Forum: General Discussion
Topic: quadrat investigation
Replies: 19
Views: 22582

You could use the quadrats in a belt transect. The abundance of the 2 species would be noted as a percentage cover of the quadrat. Cover the area in a straight line from one side to the other and make a note of the water content of the soil. The data can then be compared using a t-test. You would fi...
by Jesskat14
Thu Mar 31, 2005 2:33 pm
Forum: Zoology Discussion
Topic: Ethics of non-Killing ! ! !
Replies: 44
Views: 37281

There are places that don't use products tested on animals. Lush and the Body Shop both don't use products tested on animals and Body Shop is funding ways of testing without animals involved at all. There are other developments such as computer programs that can simulate how the product will affect ...
by Jesskat14
Thu Mar 31, 2005 2:02 pm
Forum: General Discussion
Topic: Enzymes
Replies: 12
Views: 15563

Re: Enzymes

Allosteric enzymes: Inhibitor is the garage door. It is not competing with the substrate for the fixation site, it just blocks the acces to the active site for the substrate. Is this the same as non-competitive inhibition? It's not competing for the active site but the name's thrown me slightly! No...