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November 01, 2025, 11:54:15 am
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Author Topic: Miss Martoman's questions  (Read 5023 times)  Share 

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Mao

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Re: Miss Martoman's questions
« Reply #30 on: May 31, 2010, 01:55:41 am »
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1) read: http://vcenotes.com/forum/index.php/topic,24973.msg254034.html#msg254034

2) not in the course. The only thing you need to know is the pentose sugar is ribose in RNA, and 2-deoxyribose in DNA

3) I'd assume it'll be combination of the three different ones (3!=6)
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Martoman

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Re: Miss Martoman's questions
« Reply #31 on: June 01, 2010, 08:26:31 pm »
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Again with the NEAP 2010 electrophoresis question.

Glutamic acid will be of a -2 charge, and serine with a -1 charge and serine is lighter. BUTTTT won't the acid be more attracted to the +ve electrode and hence we have an ambiguity here?
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stonecold

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Re: Miss Martoman's questions
« Reply #32 on: June 01, 2010, 08:39:56 pm »
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^ I knew there was a reason why I had them the wrong way around.  FU NEAP!
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kenhung123

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Re: Miss Martoman's questions
« Reply #33 on: June 04, 2010, 07:38:26 am »
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I think they are trying to confuse us? Like charge is not as important as weight maybe?
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Martoman

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Re: Miss Martoman's questions
« Reply #34 on: June 04, 2010, 12:47:20 pm »
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Yeah my teacher agrees with me. He said however that NEAP are right as the difference in the molecular weight is enough to overcome the charge..... but then said how on EARTH are we VCE'ers meant to now this? We aren't. Its a bad question. Like it begs the question as the what is the minimum difference in molecular weight needed to overcome a difference of 1 charge in electrophoresis?

« Last Edit: June 04, 2010, 08:17:21 pm by Martoman »
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Martoman

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Re: Miss Martoman's questions
« Reply #35 on: June 04, 2010, 08:17:55 pm »
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ALSO:

Is the peptide link a functional group 0.o?
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stonecold

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Re: Miss Martoman's questions
« Reply #36 on: June 04, 2010, 08:22:02 pm »
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i think it is called an amide group... like if you are referring to as a functional group.
« Last Edit: June 04, 2010, 08:23:56 pm by stonecold »
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Martoman

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Re: Miss Martoman's questions
« Reply #37 on: June 04, 2010, 08:23:29 pm »
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Oh *sigh*
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superflya

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Re: Miss Martoman's questions
« Reply #38 on: June 04, 2010, 08:23:43 pm »
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Quote from: stonecold on June 04, 2010, 08:22:02 pm
i think it is called an amide group...

yes.
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Martoman

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Re: Miss Martoman's questions
« Reply #39 on: June 04, 2010, 08:28:37 pm »
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Yeah I can be soooo silly sometimes.

Also, decreasing the heat will NOT denature enzymes?
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stonecold

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Re: Miss Martoman's questions
« Reply #40 on: June 04, 2010, 08:30:32 pm »
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According to google and yahoo questions, no it will not denature. Even if it is frozen!
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Martoman

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Re: Miss Martoman's questions
« Reply #41 on: June 04, 2010, 08:33:21 pm »
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I was going to say what if it were frozen!??!?

So even frozen it  still will catalyse reactions?

Wow my understanding of enzymes are very bad.
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cindyy

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Re: Miss Martoman's questions
« Reply #42 on: June 04, 2010, 08:38:11 pm »
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enzymes can only be denatured when the temperature rises and it breaks the bonds between the molecules, and then the structure changes, which makes the enzyme unable to bond to the protein.  However when it is frozen, the bonds between the molecules in the enzyme do not break, so thats why when it goes back to optimal temperature, it is still able to function!

i hope that helped :S haha
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Martoman

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Re: Miss Martoman's questions
« Reply #43 on: June 04, 2010, 08:41:21 pm »
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haha yeah i was thinking how could still operate whilst frozen? Yeah i guess its like cryogenically freezing someone. ok.
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cindyy

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Re: Miss Martoman's questions
« Reply #44 on: June 04, 2010, 08:43:52 pm »
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lol i guess you could say that xD
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