Search found 12 matches

by amberdagp
Fri Dec 25, 2009 12:12 pm
Forum: Genetics
Topic: does sodium deoxycholate effect salmonella typhimurium
Replies: 3
Views: 4642

Re:

Thank you for your reply:) so what you are saying is that if the Salmonella typhimurium strain has a defective gene that cannot synthesise HIS, and the medium culture does NOT contain HIS then this mutation can be reversed, and so can grow back? But if a mutagen is grown with the bacteria, for the b...
by amberdagp
Fri Dec 25, 2009 11:28 am
Forum: Genetics
Topic: does sodium deoxycholate effect salmonella typhimurium
Replies: 3
Views: 4642

does sodium deoxycholate effect salmonella typhimurium

Hi there I hope everyone is well I really need help, I cant find the information I need.. Firstly, I know that crystal violet on filter paper, in the presence of wild type salmonella typhimurium strain creates inhibition around the filter paper, but also bacterial growth after and around the inhibit...
by amberdagp
Wed Apr 15, 2009 11:22 am
Forum: Molecular Biology
Topic: Rare cell division
Replies: 4
Views: 5728

Re:

from the above answer, 2) is correct, 1) is false. it's not that cells need to divide because they get too big. A lot of cells spend their time in G0, in a phase outside the cell cycle. only when they receive the proper signals do they reenter the cell cycle. the key thing to keep in mind is that m...
by amberdagp
Sat Apr 11, 2009 7:06 pm
Forum: Molecular Biology
Topic: Rare cell division
Replies: 4
Views: 5728

Thank you for your reply, the main thing is i cant really find any explanation on why some cells stop dividing, as you said nerve cells (mainly in the brain), cardiac cells and liver cells, why is it they stop dividing? are they just not programmed to do this?
by amberdagp
Sat Apr 11, 2009 1:37 pm
Forum: Molecular Biology
Topic: Rare cell division
Replies: 4
Views: 5728

Rare cell division

Hi,

Some cells in the body spend a large part of their time uncergoing cell division, whereas come cells rarely divide. Why is this? thank you in advance
by amberdagp
Mon Apr 06, 2009 2:21 pm
Forum: Off Topic Discussion
Topic: Equiliria
Replies: 1
Views: 2006

Equiliria

With the reaction between SO2 and O2 to make SO3 does the equilibrium favour the reactants or products?

Im not sure how to find the answer with no Keq values, how would i know how to work this out?

Thank you
by amberdagp
Mon Mar 23, 2009 9:25 pm
Forum: Human Biology
Topic: Oral Glucose Tolerance Test
Replies: 3
Views: 3667

Can anyone recommend any good books in reference to the Oral Glucose Tolerance Test?
by amberdagp
Mon Mar 23, 2009 6:10 pm
Forum: Human Biology
Topic: Oral Glucose Tolerance Test
Replies: 3
Views: 3667

Excellent answer:) thank you very much!
by amberdagp
Sun Mar 22, 2009 9:16 pm
Forum: Human Biology
Topic: Oral Glucose Tolerance Test
Replies: 3
Views: 3667

Oral Glucose Tolerance Test

I cant really understand this, can someone please help me, i have tried to think what the answer may be but I am not sure. In an Oral Glucose Tolerance Test, a patients blood (plasma) sample had to be diluted with water, whilst other samples were not. Firstly, does this dilution mean the amount of g...
by amberdagp
Tue Mar 17, 2009 7:19 pm
Forum: Molecular Biology
Topic: DNA GEL ELECTROPHORESIS
Replies: 5
Views: 6376

also why are base pair fragments different in number with haeIII in comparision to hindIII??
by amberdagp
Tue Mar 17, 2009 5:58 pm
Forum: Molecular Biology
Topic: DNA GEL ELECTROPHORESIS
Replies: 5
Views: 6376

Re: DNA GEL ELECTROPHORESIS

Ok thank you by the way, to measure the lanes where the fragments are undistingushable, and all you can see is a big shaded area in the lane, how would you measure in mm the distance of migration? this is as i need to get the average distance of a lane where the fragments are not separate and are al...
by amberdagp
Sat Mar 14, 2009 6:44 pm
Forum: Molecular Biology
Topic: DNA GEL ELECTROPHORESIS
Replies: 5
Views: 6376

DNA GEL ELECTROPHORESIS

Hi can you please help me... The question i have been asked in after doing my Electrophoresis practical is: measure how far each of the observable fragments move (mm), tabulate the data and constrct a fully labelled calibration curve of migration distance against log10 (fragment size) Firstly, how d...