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August 20, 2025, 04:51:10 pm

Author Topic: Practical Sac.. errmmm??  (Read 4850 times)  Share 

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saheh

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Practical Sac.. errmmm??
« on: February 16, 2012, 06:17:24 pm »
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Hey guys
So I've picked up 3/4 bio, and our first sac is coming up soon and it's a prac i think,
and i haven't done a prac since like year 9,
so....
any tips? :p
I've got a few notes on how to write up/respond to pracs
but does anyone have any good tips, cause I'll totally be freaking out otherwise...
thankyou :D
2012: 97.45
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LOLs99

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Re: Practical Sac.. errmmm??
« Reply #1 on: February 17, 2012, 06:02:41 pm »
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Revise the theory on chapter 2 if you are doing osmosis..
Make sure you have to make an accurate,reliable graph/table,
I think your hypothesis have to be relevant to what you observe.
You don't have to do a prac even haven't done one before, you are doing with a group, so I guess jump into the smart ones, btw u doing prac, then after that the real sac based on your experiment and theory related to it??
« Last Edit: February 17, 2012, 06:04:24 pm by wenhao »
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Bhootnike

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Re: Practical Sac.. errmmm??
« Reply #2 on: February 17, 2012, 08:54:51 pm »
0
Hey guys
So I've picked up 3/4 bio, and our first sac is coming up soon and it's a prac i think,
and i haven't done a prac since like year 9,
so....
any tips? :p
I've got a few notes on how to write up/respond to pracs
but does anyone have any good tips, cause I'll totally be freaking out otherwise...
thankyou :D
firstly,
no need to stress,!
biol pracs arent hard and unit 3 ones are basically dealing with bacteria and antibiotics
the aim of the experiment is , what you are trying to achieve? what are ur objectives?
hypothesis: your educated guess on what your results may be
materials: usually you can say refer to prac sheet, but if you cant, just list in COLUMNS the materials used.
method: usually you can say refer to prac sheet, but then again, if you have to write it out then list each step,of the procedure
results:
if you have a table, which you most likely will, be sure to title your table!!! otherwise you may lose a mark!
and rule up your table,
if a graph, then label each axes with correct units, a title and appropriate scale

discussion:
this is like where 90% of your sac marks  come from. there will be about 10-12 questions which you have to answer. clasically discussion is meant to be a discussion, but teachers will create questions to pretty much  include all areas which might be usually covered anyways. this is what you study for.
if required, might wanna discuss why some errors have occured in results,
conclusion  -restate aim and state if your aim was achieved or not, and summarise your results.

eg.
prac - effect of antibiotics: you will be using an antibiotic <antibiotic>  -sorry , just for your clarification, when i say <antibiotic>, it means its some type of antibiotic, eg. penicllin. you will create a lawn of ecoli on an agar plate and test if antibiotic is effective or not.
aim: to investigate the effect of <antibiotic> on e.coli bacteria and to determine if e.coli is suspectible to <antiobiotic>
hypothesis: ecoli will be suspectible to <antibiotic> and will therefore not be able to reproduce, thus a zone of inhibition will form in agar plates.
materials: refer to prac sheet
OR

2 agar plates                     ecoli                            lab glasses
2 sterile swabs                 antibiotic disk              lab coat
incubator                           gloves                        etc etc ettc

method.: refer to prac sheet
or..

1. In 1 agar plate, spread ecoli in lawn pattern.. this is your control... etc etc, in 2nd plate, spread ecoli and put antibiotic disk
2. et etc

results:

The effect of <antiobiotic> on ecoli
-----------------------------------|
___________________________________ |                                                         
|        |                   |                                |
|        |                   |                                 |
|        |                   |                                 |
|        |                   |                                  |
|        |                   |                                 | 
-----------------------------------

discussion.
q1) bla bla
q2) bla bla
...etc etc

conclusion:
the effect of <AB> on e.coli was that....
it was observed that a zone of inhibition was formed in the agar plate with the antiiotic, and thus showing that ecoli was suspectible to it.


done
- rough and quick and messy, but thats the general idea.

NOTE
use full names, so no e.coli. make sure you use the full name. so Estheriyayaya coli.
note the use of no caps on coli, since this is convention. Genus species, Homo sapiens,
so not Homo Sapiens, or Esther.... Coli

make sure you use a black or blue pen.some teachers can get picky if u use red pen for headings, and subheadings and for diagrams and stuff. and pencils too.

dont , and DONT use personal pronouns in conclusion, i.e., we found that, i found that, we saw that.


good luck and enjoy your year
2011: Biol - 42
2012: Spesh |Methods |Chemistry |English Language| Physics
2014: Physiotherapy
khuda ne jab tujhe banaya hoga, ek suroor uske dil mein aaya hoga, socha hoga kya doonga tohfe mein tujhe.... tab ja ke usne mujhe banaya hoga

Panicmode

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Re: Practical Sac.. errmmm??
« Reply #3 on: February 18, 2012, 01:06:06 am »
0
Hey guys
So I've picked up 3/4 bio, and our first sac is coming up soon and it's a prac i think,
and i haven't done a prac since like year 9,
so....
any tips? :p
I've got a few notes on how to write up/respond to pracs
but does anyone have any good tips, cause I'll totally be freaking out otherwise...
thankyou :D
firstly,
no need to stress,!
biol pracs arent hard and unit 3 ones are basically dealing with bacteria and antibiotics
the aim of the experiment is , what you are trying to achieve? what are ur objectives?
hypothesis: your educated guess on what your results may be
materials: usually you can say refer to prac sheet, but if you cant, just list in COLUMNS the materials used.
method: usually you can say refer to prac sheet, but then again, if you have to write it out then list each step,of the procedure
results:
if you have a table, which you most likely will, be sure to title your table!!! otherwise you may lose a mark!
and rule up your table,
if a graph, then label each axes with correct units, a title and appropriate scale

discussion:
this is like where 90% of your sac marks  come from. there will be about 10-12 questions which you have to answer. clasically discussion is meant to be a discussion, but teachers will create questions to pretty much  include all areas which might be usually covered anyways. this is what you study for.
if required, might wanna discuss why some errors have occured in results,
conclusion  -restate aim and state if your aim was achieved or not, and summarise your results.

eg.
prac - effect of antibiotics: you will be using an antibiotic <antibiotic>  -sorry , just for your clarification, when i say <antibiotic>, it means its some type of antibiotic, eg. penicllin. you will create a lawn of ecoli on an agar plate and test if antibiotic is effective or not.
aim: to investigate the effect of <antibiotic> on e.coli bacteria and to determine if e.coli is suspectible to <antiobiotic>
hypothesis: ecoli will be suspectible to <antibiotic> and will therefore not be able to reproduce, thus a zone of inhibition will form in agar plates.
materials: refer to prac sheet
OR

2 agar plates                     ecoli                            lab glasses
2 sterile swabs                 antibiotic disk              lab coat
incubator                           gloves                        etc etc ettc

method.: refer to prac sheet
or..

1. In 1 agar plate, spread ecoli in lawn pattern.. this is your control... etc etc, in 2nd plate, spread ecoli and put antibiotic disk
2. et etc

results:

The effect of <antiobiotic> on ecoli
-----------------------------------|
___________________________________ |                                                         
|        |                   |                                |
|        |                   |                                 |
|        |                   |                                 |
|        |                   |                                  |
|        |                   |                                 | 
-----------------------------------

discussion.
q1) bla bla
q2) bla bla
...etc etc

conclusion:
the effect of <AB> on e.coli was that....
it was observed that a zone of inhibition was formed in the agar plate with the antiiotic, and thus showing that ecoli was suspectible to it.


done
- rough and quick and messy, but thats the general idea.

NOTE
use full names, so no e.coli. make sure you use the full name. so Estheriyayaya coli.
note the use of no caps on coli, since this is convention. Genus species, Homo sapiens,
so not Homo Sapiens, or Esther.... Coli

make sure you use a black or blue pen.some teachers can get picky if u use red pen for headings, and subheadings and for diagrams and stuff. and pencils too.

dont , and DONT use personal pronouns in conclusion, i.e., we found that, i found that, we saw that.


good luck and enjoy your year

Actually, I think the first prac is usually one examining osmosis (maybe with a starch indicator). However, the same process (aim, hypothesis, equipment, method discussion) still applies.
2012 Biomedicine @ UoM

saheh

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Re: Practical Sac.. errmmm??
« Reply #4 on: February 20, 2012, 07:21:55 pm »
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ok thanks guys :D this is awesome

we get discussion questions etcetc and im not sure exactly what the sac is on :/ most likely osmosis but we haven't covered it in class (that's tomorrow(it's a slow class -.-))
2012: 97.45
Lit: 36 Further: 39 Eng: 41 Bio: 42 Revs: 42 Outdoor: 49

kensan

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Re: Practical Sac.. errmmm??
« Reply #5 on: February 20, 2012, 07:47:08 pm »
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Yeah I have a prac sac tomorrow, on osmosis, plasma membranes etc. I think we are putting bits of potatoes into different % NaCl solutions. Shouldn't be too bad.
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Bhootnike

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Re: Practical Sac.. errmmm??
« Reply #6 on: February 20, 2012, 07:53:57 pm »
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Yeah I have a prac sac tomorrow, on osmosis, plasma membranes etc. I think we are putting bits of potatoes into different % NaCl solutions. Shouldn't be too bad.

oh ok..
well, we did that in unit 1/2  :p
but doesnt really matter, my post above should still work out :)

good luck guys
2011: Biol - 42
2012: Spesh |Methods |Chemistry |English Language| Physics
2014: Physiotherapy
khuda ne jab tujhe banaya hoga, ek suroor uske dil mein aaya hoga, socha hoga kya doonga tohfe mein tujhe.... tab ja ke usne mujhe banaya hoga

kensan

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Re: Practical Sac.. errmmm??
« Reply #7 on: February 20, 2012, 07:56:28 pm »
0
Yeah I have a prac sac tomorrow, on osmosis, plasma membranes etc. I think we are putting bits of potatoes into different % NaCl solutions. Shouldn't be too bad.

oh ok..
well, we did that in unit 1/2  :p
but doesnt really matter, my post above should still work out :)

good luck guys
LOL, yeah we did that in 1/2 as well. Our school must be lazy :P
2013: BSc at UoM