Science Coursework B 2008/2009

ahaaha

here are a few links to sites with info, procedures and results for the JC Science Coursework B investigations

Biology

http://www.associatedcontent.com/article/8679/the_effect_of_temperature_on_amylase.html?cat=5

Chemistry

http://www.hsc.csu.edu.au/chemistry/options/shipwrecks/2731/ch964Dec2_03.htm

http://www.fi.edu/guide/bond/sc1.html

sh1tin-a-brick

Cheers those are class! Really helpfull The biology especially

ahaaha

sh1tin-a-brick wrote: »

Cheers those are class! Really helpfull The biology especially

just be careful with the biology one - most of the time those enzymes experiments dont work at all. id reccomend doing the chem and physics investigations:)

Fad

ahaaha wrote: »

just be careful with the biology one - most of the time those enzymes experiments dont work at all. id reccomend doing the chem and physics investigations:)

Having done Enzyme experiments in LC Bio, I can safely say you are wrong

They have never not worked for me, and I'm not exactly the most attentive Scientist:pac:

ahaaha

Fad wrote: »

Having done Enzyme experiments in LC Bio, I can safely say you are wrong

They have never not worked for me, and I'm not exactly the most attentive Scientist:pac:

am i said most of the time. and i stand by what i said - the physics and chem experiments this year are easiest

Fad

ahaaha wrote: »

am i said most of the time. and i stand by what i said - the physics and chem experiments this year are easiest

You said most of the time the dont work at all!

AND THE DO!:D

RONOC08

can any1 give me the actual name of the biology 1
i have 2 have a draught done 4 2moro and i kinda lost the names

Hiccuper

Ha, we did the biology and we're doing the chem tomorrow, biology didn't really work out too well, the iodine wouldn't work on starch at 60 degrees so we couldn't tell whether the amylase was working or not.

It's an absolute bitch filling out the booklet yoke though, you have to put in waaay too much detail.

Fad

Hiccuper wrote: »

Ha, we did the biology and we're doing the chem tomorrow, chem didn't really work out too well, the iodine wouldn't work on starch at 60 degrees so we couldn't tell whether the amylase was working or not.

If it doesnt turn a blue/black colour that means there's no starch, I dont really now how else you could read that result......What exactly happened/what do you mean by wouldnt work?

Hiccuper

Fad wrote: »

If it doesnt turn a blue/black colour that means there's no starch, I dont really now how else you could read that result......What exactly happened/what do you mean by wouldnt work?

Well the starch turned blue black when we put in the iodine, but we used 60 degrees as one of the temperatures we were varying, so the iodine didn't work well on starch at that temperature and the blue-black colour faded, it was denatured or some **** like that, the control(test tube without amylase) even lost the blue-black colour.

I've just phrased that horribly badly, basically, iodine doesn't turn starch blue/black at high temperatures.

Fad

Hiccuper wrote: »

I've just phrased that horribly badly, basically, iodine doesn't turn starch blue/black at high temperatures.

Nah, its supposed to,but 60 degree isnt too much higher then the 37.

Did you use bought in amylase? (Like from a chem supplier)

RHRN

Thanks for the Chemistry ones, pity I'm not doing Biology though.
My teacher said what some people have been saying here, that the enzyme experiment is inconsistent etc..

Hiccuper

Fad wrote: »

Nah, its supposed to,but 60 degree isnt too much higher then the 37.

Did you use bought in amylase? (Like from a chem supplier)

I have no idea where we got the amylase from, it was in solution of 5% amylase, 95% water, or something along those lines.

Piste

Fad wrote: »

Having done Enzyme experiments in LC Bio, I can safely say you are wrong

They have never not worked for me, and I'm not exactly the most attentive Scientist:pac:

I'd be inclined to believe the other guy, my sister did hers the other day and said they didn't work out at all. Also the enzyme experiments at JC and LC level are totally different.

Fad

Piste wrote: »

I'd be inclined to believe the other guy, my sister did hers the other day and said they didn't work out at all. Also the enzyme experiments at JC and LC level are totally different.

JC investigations are generally seem to just be leaving cert experiments.

That said I did the old course......

ahaaha

It's an absolute bitch filling out the booklet yoke though, you have to put in waaay too much detail.[/quote]

i agree the booklet is a bitch but honestly it gets you 25% -you'll prob come out with between 15-20% along with your 10% for lab copy you will definately go up a grade, D's become C's, even better E's become D's. it helps the weaker student providing they have help to fill in the booklet.

and its not the students fault -this style of investiagtion is prob completely new to most people.
technically each experiment you do should be done like this and teachers need to adapt their way of performing investigations to get kids used to it... but all this takes too much time for such a large curriculum.

should you do fewer experiments and study less topics in order to imrove on your investigative and analytical skills? i think so - thats mostly what science is...

littlebsci

ahaaha wrote: »

and its not the students fault -this style of investiagtion is prob completely new to most people.
technically each experiment you do should be done like this and teachers need to adapt their way of performing investigations to get kids used to it... but all this takes too much time for such a large curriculum.

And yet (without wanting to sound too critical) you post links to websites that reduce the amount of researching time any student who sees this thread has to do! The idea is that students are supposed to figure out themselves how they might go about carrying out the investigation and although I'm well aware that it's pretty easy to find the sites listed below (and other similar ones) surely finding them is all part of the research process.

Just a thought because overall I agree fully with your point about not having enough time to approach practicals the way they really should be!

lynnx

We did ours last week, everything turned out fine, we used our own amylase samples, which was probably why ours worked fine, the other class in the school used the 5% amylase, 95% water solution and theirs didn't work out. Using your own is probably your best bet.

Zipp101

Do you think that you'd get away with taking some of the biology/chem experiments down word for word??
Because we got mock booklets to fill out.

Alibear

Gah, why did I have to spot this so late? Finished my booklet before the Easter holidays...

Alibear

Zipp101 wrote: »

Do you think that you'd get away with taking some of the biology/chem experiments down word for word??
Because we got mock booklets to fill out.

The "real" booklets are due in after the Easter Holidays... I'd be wary about writing down experiments word for word, as I know of some cases where they've had to "investigate" students who they believed copied work...

shanec1928

did anybody do the physics 1?if so what did you think of it? i thought it was pretty easy

soccymonster

forza rovers wrote: »

did anybody do the physics 1?if so what did you think of it? i thought it was pretty easy

i did the chemistry and biology one but half my class did the physics one..
they said it was easy enough! but they did have to draw a couple of graphs while for bio, we ddnt have to draw any!!!!:D:D
was it just me or did anyone elses biology experiment end up turning green when the benedicts solution was added to the amylase???

shanec1928

soccymonster wrote: »

i did the chemistry and biology one but half my class did the physics one..
they said it was easy enough! but they did have to draw a couple of graphs while for bio, we ddnt have to draw any!!!!:D:D
was it just me or did anyone elses biology experiment end up turning green when the Benedicts solution was added to the amylase???

ye had a choice the class was made do the same experiment

jw93

Can someone please help me I have to have the biology and chemistry experiments fully written out by Monday and I dont have the slightest clue what to write for any of it as the teacher is making us write everything out ourselves:eek:, in our own words as the class is to badly behaved for her to help us out I am f**K*D as I cant do it on my own as I didnt take down any of the results and all my friends are the same as she didnt tell us to take any of our results down and I cant remeber in detail the procedure that was followed in the investigation:oCAN ANYBODY HELP ME?

soccymonster

forza rovers wrote: »

ye had a choice the class was made do the same experiment

yea we had a choice thank god!!!!

Zipp101

Anyone any explanations on physics experiment?

animalcrazy

We did chem and physics, haven't a clue how to do any of them and haven't a clue how to fill out the booklet, oh well