biology practical

S

sunstar

Messages
22
Reaction score
23
Points
13
dumb human said:
HERE YO GO!I CAME TO KNOW ABOUT IT FROM MY FRIEND.

*Its like Yeast in gonna be there in both Question(1&2)--->(Serial dilution and Slide)

1) We are gonna have YEAST, to which you will add 1 drop Methyl-Blue, then check under Microscope, if cells are BLUE--->then the cells are DEAD, but if cells are YELLOW--->they are LIVING.

2)They may ask to state about:-
#MODIFICATION:-Use calorimeter(to find the end-point), Repeat more than once.
#RELIABLE RESULTS:-Repeat the experiment and calculate the Mean, Increase the range of Concentrations, Record the result in shorter intervals.
#ACCURACY:-Use Stopwatch, use Digital-Thermometer, use Calorimeter, use a temperature to control Water-bath.

3)Serial-Dilution of yeast okay...
Click to expand...


well, This is about V33... can you help me in V32? I have been begging for help from everybody and no one replies :(
so if you please could help me with any guess... I would be too grateful
Thnx in advance :)
Good luck with ur exams (Y)
 
dumb human

dumb human

Messages
338
Reaction score
868
Points
93
sunstar said:
well, This is about V33... can you help me in V32? I have been begging for help from everybody and no one replies :(
so if you please could help me with any guess... I would be too grateful
Thnx in advance :)
Good luck with ur exams (Y)
Click to expand...


I am not sure about 32, But most probably u will have food test, because we didn't have that,
graph of course,
then these====>#MODIFICATION:-Use calorimeter(to find the end-point), Repeat more than once.
#RELIABLE RESULTS:-Repeat the experiment and calculate the Mean, Increase the range of Concentrations, Record the result in shorter intervals.
#ACCURACY:-Use Stopwatch, use Digital-Thermometer, use Calorimeter, use a temperature to control Water-bath.

well just go through past-papers of variant 32 you know.
if i come to know anything, i will surely tell you =)
 
S

sunstar

Messages
22
Reaction score
23
Points
13
dumb human said:
I am not sure about 32, But most probably u will have food test, because we didn't have that,
graph of course,
then these====>#MODIFICATION:-Use calorimeter(to find the end-point), Repeat more than once.
#RELIABLE RESULTS:-Repeat the experiment and calculate the Mean, Increase the range of Concentrations, Record the result in shorter intervals.
#ACCURACY:-Use Stopwatch, use Digital-Thermometer, use Calorimeter, use a temperature to control Water-bath.

well just go through past-papers of variant 32 you know.
if i come to know anything, i will surely tell you =)
Click to expand...

ThanQ you so much.... But I dont think food test going to come cuz v31 already had food test...
They had to carry out semi-quantitative experiment with glucose by carrying serial dilution and to find 2 unknowns
That's why I was wondering which exp may come especially that my teacher refused to help and all she told me was it maybe enzymes , and as you got the yeast exp I couldnt predict any of the exp... :(
Anyways thnx for ur help and I will be waiting ur reply asasp ;)
I appreciate ur reply
 
dumb human

dumb human

Messages
338
Reaction score
868
Points
93
sunstar said:
ThanQ you so much.... But I dont think food test going to come cuz v31 already had food test...
They had to carry out semi-quantitative experiment with glucose by carrying serial dilution and to find 2 unknowns
That's why I was wondering which exp may come especially that my teacher refused to help and all she told me was it maybe enzymes , and as you got the yeast exp I couldnt predict any of the exp... :(
Anyways thnx for ur help and I will be waiting ur reply asasp ;)
I appreciate ur reply
Click to expand...


oh!!! then i think you must refer through everything you know!!
i think 32 is a mixture of 31 and 33 lol =P
 
MYLORD

MYLORD

Messages
324
Reaction score
537
Points
103
sunstar said:
ThanQ you so much.... But I dont think food test going to come cuz v31 already had food test...
They had to carry out semi-quantitative experiment with glucose by carrying serial dilution and to find 2 unknowns
That's why I was wondering which exp may come especially that my teacher refused to help and all she told me was it maybe enzymes , and as you got the yeast exp I couldnt predict any of the exp... :(
Anyways thnx for ur help and I will be waiting ur reply asasp ;)
I appreciate ur reply
Click to expand...
so r u 100% sure that enzymes is coming??
after doing our last pactical on food tests in april our teacher gave us an extra paper on enzymes reaction which had amylase thingy related ?
Any guesses??
It will be a GREAT help !!:D
 
A

aaaamfa

Messages
201
Reaction score
222
Points
53
S

sunstar

Messages
22
Reaction score
23
Points
13
Guys, I just wanted to ask if anyone could draw a plan diagram of how stomata look like in upper epidermis and that at lower epidermis as they appear on an imprint using nail varnish and microscope :(
This question is present in oct/nov 2006
Thnx in advance
 
DeViL gURl B)

DeViL gURl B)

Messages
528
Reaction score
1,241
Points
153
dumb human said:
I am not sure about 32, But most probably u will have food test, because we didn't have that,
graph of course,
then these====>#MODIFICATION:-Use calorimeter(to find the end-point), Repeat more than once.
#RELIABLE RESULTS:-Repeat the experiment and calculate the Mean, Increase the range of Concentrations, Record the result in shorter intervals.
#ACCURACY:-Use Stopwatch, use Digital-Thermometer, use Calorimeter, use a temperature to control Water-bath.

well just go through past-papers of variant 32 you know.
if i come to know anything, i will surely tell you =)
Click to expand...

So dude we should only practice of variant 32 or the others as well?
Plus of u've got any tips on plan diagram please share :(
And max how much pastpapers should be practiced?
Thank you :)
 
You must log in or register to reply here.
Top