perf3c7ion

2009-02-15T19:09:00.003+08:00

HEY PEOPLE!
YOU ARE OUTDATED IF YOU ARE STILL VISITING THIS BLOG!!
CLICK HERE FOR THE LATEST BLOG!!

see you soon!!

Chalet

2008-11-09T23:19:00.006+08:00

Chalet!!

chalet was over..
ermm..so soli as there is no activities planned..
but still i hope you all have enjoyed this year's chalet..^.^

if u have any comments or on how to improve on this year's chalet, plz tag..

2008-10-30T20:13:00.003+08:00

Chalet

Chalet will be on 6nov, 2days 1 night.we will be having BBQ in the night!!
so i need people to help buy snacks and drinks all that before the chalet..can i have some volunteers to help?? Need carry heavy things..and can anyone bring water dispenser?? just reply at the tag board..thankyou for your help!!

And 1 more thing, anyone de parent who have NTUC card can help to collect key for us?? reply at tag board also.. or sms me also can..thankz! ^_^

2008-10-20T22:59:00.004+08:00

Real meaning behind expression F T W

FTW actually stands for " FOR THE WIN " , an expression of enthusiasm . People usually misunderstood the expression as some sort of vulgarity ( F*** THE WORLD .... F*** THE WALL etc. ) . People are advised to use the expression wisely and in fact, it is useful in times of fast communication . Words and expression like this one includes the commonly use " LOL " .

2008-09-15T20:27:00.005+08:00

hey pple! mam mathews de birthdae is coming le.. anione gt ani suggestion for wat to giv her and how to celebrate, plz post or tag.. thanx ^.^
jiayou for your oral exams!=p

2008-08-22T19:31:00.003+08:00

yay. i can finally log in to post this video..
Denzel,Rudy,Prasad, Farid and Shahari's performance during the Mother Tongue Week, Karaoke Finals..
(Credits to Eddy, video isn't taken by me ^^)
Song: Love Me by Collin Raye :)
(no title) -

2008-08-18T21:49:00.002+08:00

guys showing off their prize!

2ND for Amazing Race

Congrats to our class for achieving 2nd for the amazing race held today!well done guys!
credits to:Shahari,Farid,Denzel,Roodee and Prasad!You guys are really pro to make us proud!

CD thru the arts

2008-08-09T15:31:00.003+08:00

GOT into FINALS!CD thru the arts

we are too pro to get into the final!
congrats!and oso congrats to 3/4 & 3/1!
Thanx for the effort put by everione!Gd job guys!
thanx all actors:zubaidah,natasha,azura,hawa,mojo,dmelissa,prasad,farid,roodee,shahari,aizal,jiajun,juztin!
thanx humairah for the script and thanx shimin for the music and all 3/7-ers for your support!Ms chitra said the JJ is pretty outstanding!well done!
the finals will be on 26 Aug,during H^3 period,at hall!
so be prepared!after common test,we will hav to rehearse again!this tym will be presenting to all sec 3s students!so we hav to be well-prepared!tis tym round we will have to use mic,so we hav to find ways to do it..
Jiayou!for ur common test oso!

Young Marine Biologist Award!!

2008-08-07T10:56:00.003+08:00

Dear all,

Anyone interested to take part in the competition? :-)

2008-07-27T16:27:00.009+08:00

Racial Harmony Day 3/7 OWNS IT!

WOW! Every single one wears ethnic costume! 3/7 TOTALLY ROCKS TO THE CORE! yeah!
Almost everyone wear different races' ethnic costume! we are pro right? PRO-ERS!
3/7 is damm unite! thanx everyone for the effort! PERF3C7ION!
we enjoy ourself right?! sure de lah..

<''beloved'' wu>

<''the tall purple!''>

Answers for Prac. Investigations

2008-07-21T17:35:00.001+08:00

Investigation 5.2 What Happens during Starch Digestion

Procedure:
1 Test all the solutions for starch and reducing sugar using the iodine test and Benedict’s test respectively. Use about 2 cm3 of each test solution (S1 to S5) for starch test and reducing sugar test. By comparing the intensity of blue-black coloration and the amount of orange-red precipitate, the amount of starch and reducing sugar present can be estimated. To test for starch, add a few drops of iodine solution to 2 cm3 of each test solution. Observe for blue-black precipitate. To test for reducing sugar, add 2 cm3 of Benedict’s solution to 2 cm3 of each test solution. Mix well. Put the mixture in a boiling water bath for about 5 min. Observe for orange-red precipitate. Starch is digested to maltose, a reducing sugar, in the gut. So the lesser the amount of starch and the greater the amount of reducing sugar in a solution, the more digestion has occurred.
2 The volume/amount of all solutions and reagents used, the amount of time the mixture of Benedict’s solution and test solution are put in the boiling water bath, the heating temperature for each solution
3
Results of starch test
Sample
Observations
Conclusions
S1

S2

S3

S4

S5

4 By looking at the colour changes and amount of precipitate produced.
5
Results of reducing sugar test
Sample
Observations
Conclusions
S1

S2

S3

S4

S5

6 Arrange from the most starch and least reducing sugar to the least starch and most reducing sugar.
S4, S5, S1, S3, S2 (order in which digestion occurs)

Questions:
1a) Any of the following:
- Colour changes may be hard to distinguish or judge and varied among the observers.
- The amount of starch and reducing sugar is just an estimation based on the observation of colour or intensity of the chemical reactions.
- The exact amount of starch or reducing sugar cannot be determined by observation on the intensity of the colour or the amount of precipitate.
- The quantity of starch or reducing sugar cannot be determined accurately by the qualitative observation of colour intensity or amount of precipitate.
b) Use a colorimeter; compare with a standard.

Conclusion:
Starch is digested to maltose, a reducing sugar, in the alimentary canal. The lesser the amount of starch and the greater the amount of the reducing sugar in a solution, the more digestion has occurred.

Investigation 5.3 Absorption of Carbohydrates in the Mammalian Alimentary Canal
Results:

Samples taken at
Iodine test
0 min
5 mins
10 mins
20 mins
Observations
iodine remains brown
iodine remains brown
iodine remains brown
iodine remains brown
Deductions
starch absent
starch absent
starch absent
starch absent

Samples taken at
Benedict's test
0 min
5 mins
10 mins
20 mins
Observations
solution remains blue
yellow/green precipitate formed
yellow/green precipitate formed
orange/red precipitate formed
Deductions
glucose absent
little glucose present
little glucose present
more glucose present

Questions:
1 Any of the following:
· Reverse the liquids with distilled water inside Visking tubing and solution of glucose and starch outside (test to show that only glucose enters tubing).
· Use a permeable membrane to show that both starch and glucose are capable of diffusion.
· Use an impermeable membrane (e.g. rubber/plastic membrane) to show that no diffusion can occur.
· Test for starch in Visking tubing at the end of the experiment.
2a) Starch is present in the mammalian diet. Starch molecules are large and cannot diffuse across the gut wall. Enzymes in the mammalian body hydrolyse starch to maltose and then to glucose. Glucose molecules are small and soluble and can pass through the gut wall, hence they can be absorbed in the gut.
b) Name any two enzymes that digest carbohydrates and where you can find them (see
chapter 5 of the textbook). Examples include salivary amylase found in buccal cavity; pancreatic amylase found in duodenum; intestinal maltase found in duodenum.
3 Blood plasma/blood.

Conclusion:
Visking tubing asts as small intestine in mammalian alimentary canal. Starch has to be digested into small and soluble glucose by enzymes so that it can be absorbed.

Investigation 6.1 How Can We Test for Starch in a Leaf?
Procedure:
6 The leaf turns blue-black.

Questions:
1 Enzymes are protein in nature. At high temperatures, the weak bonds in proteins are broken, causing the proteins to be denatured. The active site configuration is lost.
2a) Colourless
b) Green
3 It removed the chlorophyll and decolourised the leaf.
4 Starch is present in the leaf.

Conclusion:
Photosynthesis has taken place since starch is present in leaf.

Investigation 6.6A Effect of Different Light Intensities on the Rate of Photosynthesis?
Procedure:
1 Rate of oxygen produced. Oxygen produced can be measured as gas bubbles from
a water plant.
2 Vary the distance of the light bulb from the plant and measure its effect.
8 Less bubbles are produced as the distance between lamp and plant increases.
10 The rate of bubbling increases as the distance between the lamp and the plant
decreases.

Questions:
1 Photosynthesis
2 Light intensity increases as distance of the lamp from the plant decreases.
3 Rate of photosynthesis increases as the light intensity increases.
4 To provide carbon dioxide to the plant.
5 The size of the bubbles may vary. The rate at which oxygen is evolved cannot be
accurately measured, thus this would not be an accurate measurement of the rate of
photosynthesis.
6 Cut end of plant facing upwards in test tube; average number of bubbles taken from 2
readings each.

Conclusion:
Rate of photosynthesis is affected by light intensity. The higher the light intensity, the higher the rate of photosynthesis and vice versa.

Biology Workbook Ans_Transport in Plants

2008-07-21T17:34:00.000+08:00

Biology Workbook
Structured Questions (Page 77)

1 (a) The lower leaf surface, because when the jelly was on the upper leaf surface only, the weight loss was the highest.

(b) Lower leaf surface, because the weight loss was the highest when the jelly was placed only on the upper leaf surface. When there are less stomata, less water is lost.

(c) Thyme loses less water than mint plant. This could be because thyme has smaller leaves, that is, smaller surface area, or because it has fewer stomata.

(d) Thyme because the percentage water loss is lower compared with mint.

3 (a) Plant A
(b) Any two of the following:
Rolled up leaf to make the air around the stomata saturated with water vapour /
Reduce the surface area exposed to the dry air. /
Sunken stomata to make the air around the stomata saturated with water vapour / Trichomes (hair) to trap water vapour. / Thick cuticle (impermeable / water proof) to prevent excessive water loss by evaporation.

4 (a) Transpiration
(b) It measures the amount of water absorbed by the plant.
(c) Any two of the following:
• water taken up by the plant will be used in photosynthesis
• water taken up may be used in reactions such as hydrolysis
• water taken up may be used to maintain plant turgidity
(d)Any two of the following:
Temperature / Wind speed / velocity / Humidity / Light intensity

Free response questions: (page 81)
1 (a)They are dead structures. [1] They do not contain protoplasm. [1]

(b) They transport water and dissolved mineral salts [1] from the roots to the stem and l eaves, and provide mechanical support to the plant. [1]

(c)The xylem does not have any cross walls and protoplasm. This enables water to move easily through the lumen. [1] Lignin deposited on the walls helps strengthen the walls and prevent the vessel from collapsing. [1] When bundled together, the xylem vessels provide mechanical support to the plant. [1]

2008-07-14T16:06:00.004+08:00

HEY GUYS!!
good job for the R^3 day ok?
pictures are currently uploaded into MY photobucket account.
sorry i took so long. cause our dear Chairperson took 169 pictures.
and i can't post all of them here cause i need to resize them.
so. please go see and take yourself ok??

and anyways. there are quite a few repeated ones.
due to my computer's technical error.
SORRY!!

photobucket link: http://s271.photobucket.com/albums/jj124/Edwardx33/perf3c7ion08/
guest password: shiminXD
just bear with it and pretend it isn't there.. >< here are some of the pics.. =D

lols Mr Chong.

FORM TEACHERS NOT DOING ANYTHING..

.
THE BOYS.

THE GIRLS.

GROUP SHOTS

Loading of rubbish

that's all!!
and good luck to those having their LC tomorrow =D

shi min =X

PS: CHOW SHU LI AND MANDY TAN!!
stop annoying me over this matter le ok!!

2008-07-07T20:23:00.002+08:00

I noticed that this blog is dying. Anyway, for all those taking o level oral tommorow, all the best! Don't be nervous. Hope you guys score well.

-zZi Yangz-

2008-06-25T17:06:00.003+08:00

What's requested to be done has been done. I don't get why Yoshi can't do it because he's the only one that visits this blog on a daily basis (I think). Anyway, the blog song is only temporary till I find a regular quality studio edition one.

Should've done something but I've done it enough
by the way your hands were shaking rather waste some time with you.

Let's see...I guess everyone knows what homework there is so I dont see a need to post it.

-zZi Yangz-

2008-06-22T14:21:00.002+08:00

yo!..tml follow e old timetable,tue onwards den follow new one..plz go to sch website to look for e new timetable..
rmb to bring ur report bk..
it's a new semester!..let's work hard together as a class and jiayou in everithing u do!

2008-06-05T19:15:00.002+08:00

It's me again~ Anyone wants to have an outing during the holidays? It's damn boring at home, and I don't want to get started on the holiday homework yet.

-zZi Yangz-

confirmed meeting!

2008-05-31T14:02:00.003+08:00

Meeting on CD
there will be a miting
date:3 june 08
day:tuesday
venue:community club beside sch
time:1 pm
things to bring:brain

*tis is a serious thing..hope ur go there le dun joke joke
plz think of ideas for CD at home..ty
oso help to spread tis news

2008-05-30T18:25:00.001+08:00

The blog song has been changed due to the request of yoshi. It's Check Yes Juliet by We The Kings. If any of you hate this song or something please tell me.

-zZi Yangz-

Meetings!

2008-05-29T22:56:00.002+08:00

MEETINGS
hav ur read about e CD thingy?
so..
everyone has to participate(",)
plz..everyone has to help to brainstorm!
dun lyk camp tat time,las min den tink..
im goin to hold a miting nex wik at e community club beside e sch
i noe tat all of ur hav activities during e holidaes,but at least try to cum
especially drama club members(can write skit?),dancers(make movements?),humurous gang(entertain us?),nth to do at home de ppl(to spend ur time?),creative pple(hav creative ideas?),gd in art de ppl(help to do props if doin skit?),class committee(hav to cum!)..
hey!tis is a class but nt an individual matter!everyone plz cooperate!
i nid to noe when are ur free nex wik and plz reply in e tag blog or sms mi(",)
for those hu visit tis blog plz oso inform ur frenz about tis thing!tank cute!

CD through the arts

2008-05-29T21:49:00.003+08:00

CD Through the Arts
Hey guys!attention here plz!

there is again a "big project" to do le..
it is an inter-class competition.
we are to prepare a 10 mins item based on "Application of RSpIrit in daily life through the use of SE competencies" through any of the performing arts platforms.
however,we canot sing a song or do a dance and say it shows team spirit as the application in real life is not shown.

we hav to use recycled materials for props and presentation.

we will perform in the afternoon on 31July (thursday),3.35pm.
based on the performance, 3 classes per level will be selected for the finals to be performed during the H3 lesson on 26August

Prizes will be given away to the top 3 classes and points will oso be added up towards the Display of RSpIrit overall class championships.

The judging criteria is as follows:

Ability to deliver intended msg 40%

(is the msg clear through the performing arts selected?does the skit,songs,dance etc convey your msg clearly?)

Team spirit displayed by class during performance 25%

(audience support from classmates will oso count towards team spirit)

Creativity in presentation and use of props 25%

(ability to use props creativity despite the limited resource)

Entertainment value 10%

(ability to captivate the audience attention through the performance)

homeworks (" ,)

2008-05-29T21:19:00.002+08:00

HOMEWORKS (" ,)
ENGLISH
summary
comprehension
pulic speaking
vocab practice-confusing words
writing task-topic 'success'

E.MATH
TYS
portfolio-congruence & similarities

BIOLOGY
chap 7 assignments

PHYSICS
TYS(refer to e list)

HISTORY
2 SBQ

No bio xtra lesson

2008-05-23T20:35:00.002+08:00

Pls note that there will b no extra bio lesson on monday.Thx

2008-05-15T10:39:00.005+08:00

Howdy!
Hidey-Ho!
Wa Ha Ha!

On behalf of 3/7, i would like to sing "Happy b'day song" to people whose b'day falls in the June holiday(24 May - 22 June). -#LOL#-

I know is kind of early but i don't care..........

To Mei Xia (14-6):

Happy b'day to you
Happy b'day to you
Happy b'day to Mei Xia
Happy b'day to you!

To Sze Hui (6-6):

Happy b'day to you
Happy b'day to you
Happy b'day to Sze Hui
Happy b'day to you!

To Prasad (30-5):

Happy b'day to you
Happy b'day to you
Happy b'day to Prasad
Happy b'day to you!

To Kang min(17-6):

Happy b'day to you
Happy b'day to you
Happy b'day to Kang Min
Happy b'day to you!

-lol-LOL-lol-LOL-lol-
Jia Jun

2008-05-14T21:57:00.001+08:00

HEY PPL OUT THERE((:

exams FINALLY over..hahaz..
agree with ziyang tt we should haf gathering during th hols..
thn ziyang pay for th expenses!!!

2008-05-12T12:01:00.002+08:00

MYE has been over for so long and no one has posted yet. It's damn boring at home, someone organise a gathering or something. I don't care what, just get me out of my house. Please~

Okay, that sounded really despo.

Dying of boredom
-zZi Yangz-

Physics

2008-05-07T18:38:00.005+08:00

PHYSICS

reminders:
files,theory wkbk and tys has to be handed in by tml(8/5)

topics tested is wat we hav learn until nw..
jiayou everione!..add more oil!..2 more papers to go onli!..

Chemistry (tue-6/5)

2008-05-03T14:56:00.003+08:00

Chemistry (tue-6/5)

Chap 1 Kinetic Particle Theory
Chap 2 Measurement and Experimental Teachniques
Chap 3 Separetion Teachniques
Chap 4 Elements,Compounds and Mixtures
Chap 7 Writing Equations
Chap 8 The Mole

History (tue 6/5)

2008-05-03T14:10:00.003+08:00

History (tue 6/5)

Section A-SBQ (compulsory)
Topics:Rise of Stalin & Stalin's five-years plans (chap 3)
Skills tested:
-infer message of source
-infer motive of source
-compare and contrast

Section B (SEQ-compulsory)
Topic:Establishing Peace (chap 2)

social studies (mon-5/5)

2008-05-03T13:34:00.007+08:00

Social Studies (mon-5/5)

Section A (SBQ-compulsory)
Topic:Governance in Singapore (chap 2)
Skills tested:
-infer message of source (1 Qn)
-infer motive/purpose of source (1Qn)
-compare & contrast (1Qn)

Section B (SEQ-choose 1 out of 2)
Topics:
1.Governance in Singapore
-Population Policy
OR
2.Managing Healthcare in Singapore & Britain

2008-05-01T22:41:00.001+08:00

GOOD LUCK FOR MYE PPL((:

2008-05-01T17:59:00.005+08:00

Looks like our administrator is a very shy person. Why don't you tell us who you are? Anyway, good luck for Mid-year everyone~ And Prasad, is that a song? I can't seem to find it on imeem.
"edit" Blog Song is up, it's All That I've Got by The Used.

-zZi Yangz-

2008-05-01T15:59:00.003+08:00

hellos, 3/7.
I am the administrator of the blog
you don't have to know who I am, but I will be posting the homework list on MOST days.

-English files of the selected 10 people must submit your files by tomorrow, 02.05 to Mrs Yeo
(you should know who you are, I am not very sure, sorry)
-History students, please be reminded that your SEQ is due tomorrow, 02.05 to the History rep
-Physics file, theory workbook, practical workbook, and the TYS have to be handed in to Mrs Low
on 08.05
-Chemistry theory workbook, files and TYS have to be handed in to the respective people on 06.05
>Shu Li - Chemistry file
>Shi Min - Chemistry TYS
>Humairah - Chemistry Workbook

that should be all, if there is any mistakes or anything I have missed out,
please kindly post at the tagboard or edit this post.
if you want to post at this blog, please contact Zi Yang or Shu Li.
we will add you as the author.

please do work hard for the upcoming MYE exams.
and good luck.. JYJY =]

Thank you and bye bye

and as a dedication to our chairperson.
please visit this website. click here

2008-04-28T20:26:00.003+08:00

The class blog is up and ready at last! The username and password can be gotten from me. If you want to be linked, make a request at the tagboard. Suggestions to improve this blog are welcome as well. Oh yeah, I'm the 1st to post! XD

-zZi Yangz-