Monthly Archives: June 2007

Bi-uret’s test

ive all along pronounced this test for protein as beu-rets test.

and today while i was at my course, i was wondering why the lecturer kept saying bi-urets test…. and was laughing at the pronunciation, until she explained why that test required NaOH to be added first and then followed by CuSO4…..

you see, the purplish/violet/lilac colouration that you see in a positive biuret’s test is because of the formation of this molecule known as uret. and this molecule comes in pairs. which is why its known as bi-uret.

so why add NaOH first and not the other way round?

because the for CuSO4 to react with the proteins present in the sample, you need an alkaline medium. so the NaOH is meant to create the necessary condition for the reaction.

you can still add CuSO4 first and then add in NaOH. but it’s just more right to prepare the condition first before adding the reagent needed for the reaction.

so there you go….

and then one of the guys sitting in my group laughed.

“tell this to my students and they’ll say, ‘ah ya la ya la… just tell us the steps can already lah…’ no need to waste my breath… just teach them how to do the steps and read results can already…”


i mean, i kind of agree with him to a certain extent. students need to be at a certain level of maturity to understand the concepts behind why certain things are done. though it doesnt mean im not going to try…. i’d probably tell my kids this rationale when they are in sec 4 when they can take in more abstract concepts. but tell this to sec 1s when they are learning food tests? its really not the time…..

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Posted by on June 28, 2007 in i-Bio


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Posted by on June 28, 2007 in i-Happy


National Monument missing

apparently some suitcase which Dr Goh Keng Swee buried under the National Stadium got lost somewhere…. i remember Dr Goh Keng Swee. i learnt abt him in history. but more than that, i learnt abt him in History of Nation building module in NUS.

ya… one of the ppl who made Singapore what it is today…

sad that important stuff like these got lost. imagine how many more National secrets like Defense and Finance stuff are being hidden, without public announcements…

now im pretty sure that there are a bunch of ppl looking for this suitcase, other than the official ones assigned to the task…. if they still dont find it, perhaps 200 yrs later, if Singapore isnt already sunken under sea, digging up old records will stimulate the search again. and maybe then, someone will find something abt Singapore’s foreign policies then. and financial transactions.

scary right….

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Posted by on June 26, 2007 in i-Reflect



according to wikipedia, indigestion is caused by excessive acid accumulation or excessive comsumption of alcohol. now, since i dont take alcohol. my stomach pains must be caused by excessive acid accumulation.

and i do have pain in the xiphoid region, which makes me certain that i probably have indigestion.

the most common way to counter this is to take antacids.

but you know me… i dont like taking pills. so i’d rather find some other natural way to get rid of this excess HCl.

the problem now is this. why is there excessive acid accumulation?

it could be an ulcer in my stomach, or some reflux thingy. or some peristalsis problem. eating too much. eating too quickly. eating high-fat foods, eating during stressful situations.

it cant be that im so highly stressed that my digestive system is revolting right? i dont eat too fast. i do eat too much…. cos i take small amts all the time. overall, it should be too much. but it isnt too much at one go. reflux thing? i dont think so, cos i dont have heartburn. peristalsis problem… maybe.



i really dont want to go for checkups…..

so, im going to give myself 2 mths to get my stomach back in shape.

thats going to include me shitting and peeing at regular intervals. eating regularly. drinking more milk.

talking abt regular excretion and egestion… guess what… on tuesday i have 7 periods, and on wednesday i have 8 periods…. in a day, there’s a total of 10 periods. which means, tues and weds are automatically be my bad mood days…

though i know they will come up with another draft… but still the increase in my deployment will mean i’ll have more periods in a day…. oh well… i still got to take care of my health isnt it…

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Posted by on June 23, 2007 in i-Bio, i-Typical


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Posted by on June 19, 2007 in i-Typical


AHHHhhh i cant stand this!!!!!

oh man!!!! im so so high now!!!!

the Prison Break soundtrack is one hell of a piece of work!!! i want to keep hearing it again and again and again!!! it’s gorgeous!!!!!

it’s my ringtone now!!!! now i wish more ppl will call me!!!! i love that song!!!!!!!!! oooohhh la la!!!!!

listen to the beats, the music coming in and more percussions added on at the later part… oh man… super sexy soundtrack! gives me the creeps!

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Posted by on June 19, 2007 in i-Blabber, i-Typical


in sick and in sick…

im ill….

i used to have low blood pressure. once i started teaching, i have normal blood pressure. give a few more yrs and i may have high blood pressure.

i hear a ringing sound in my ear now and then…. either my right or my left…  thats bad right…

and then, sometimes when i sneeze, i have this sharp pain below the abdomen. usually on the right. i think i may have appendicitis. but then, those kinds of pains are supposed to persist for hours.. mine’s a sharp, rather short one. maybe one of my kidney’s failing.

and recently, ive gotten gastric pains. and worse, the pains get more severe after i eat. cos all the acids are released? there was one day in sch, when my collegue ordered Mc for breakfast. and after i had my burger, i had terrible pains. i think this is what they call dyspepsia. maybe its peptic ulcer. and i have been having more fart recently. something must be bloating in my body. do i have stomach cancer???

look, this is not meant to be a funny post. seriously, health is the most important thing to a person… and i seriously dont want to be sick in any part of my body.

my healthy diet regime is going good. great. but my exercise regime kind of hasnt even started. im worried man…. whats going on inside that body of mine???

time to go for a checkup.. blood tests…. (eeeeeeuuuuuuu…. needle-o-phobia) endoscopy? not in a million yrs. can you imagine a tube going down your oesophagus, into your stomach, and the whole time you got to sit there with your head straight up…. reminds me of the time when i was learning to do oral feeding for mice. what i tried to put it, usually came out…

to all the mice i’ve (mis)handled

“i am sorry for all that sin ive committed when i was learning to handle you. but i did stop trying to orally feed you the drugs i was experimenting with when i realised i couldnt get it down your throat. im sorry. pls do not come to haunt me. i promise to say a silent prayer before i kill other animals. actually i always do. but im sorry anyway.”

i repeat, this is a serious post. i am honestly getting worried abt my health… 😦

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Posted by on June 18, 2007 in i-Typical

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