Edexcel BIOLOGY Doubts!!!!

[Raaga]

can some1 tell me the saefty issues and variables and how to control them for A2 edexcel practicals.

thanks alot

[MKh]

Gumnam, Vicoden, Raaga and Booklover, I think u guyz r doing A2 written Alternative to practical on the 25th ryt? I am doing this paper also, so y don't v come online tonight and discuss this paper? It would be gud....v can share ideas and whatever few notes v have and any other resources so that v can ask each other questions v hav a doubt about....what do u guyz think and where do u live?

[MKh]

Raaga, plz be more specific and make urself more clearer....safety issues regarding what - core practicals (and which core practical) or the planning of investigation part? and what variables are u talking about? u mean all variables that may be dealt with in A2 level Biology? if u state which variable, then only i may help by suggesting how to control it....

[guMnam]

http://www.mediafire.com/?k362jo55hwseq3h

This posted by some other user, i find it great help to keep me in track on what im to do for practicle, i finish each experiment from there and read the same experiment from my guides. i think for practicles thats more than enough ..

here are some other notes i dono if you have them or no

thns alot

+rep

[guMnam]

Gumnam, Vicoden, Raaga and Booklover, I think u guyz r doing A2 written Alternative to practical on the 25th ryt? I am doing this paper also, so y don't v come online tonight and discuss this paper? It would be gud....v can share ideas and whatever few notes v have and any other resources so that v can ask each other questions v hav a doubt about....what do u guyz think and where do u live?

umm.. yea i m giving tht paper but i have chem exam tmrw so ill see if i get time and then we can discuss

[MKh]

if not today tomorrow?

[sgd]

Hi
I have the Biology unit 6B in 3 days, and i have absolutely no clue on what to do
Urgent help needed

[guMnam]

if not today tomorrow?

okay:)

[Ghayth]

Do we need to check up on all the experiments we did in Unit 3 Bio for Unit 6 or just some of them ?

[guMnam]

all ^

[ksitna]

Hi
I have the Biology unit 6B in 3 days, and i have absolutely no clue on what to do
Urgent help needed

here are the practicals
https://studentforums.biz/reference-material-83/edexcel-biology-a2-practicals/msg407188/?topicseen#new

[ibuprofen500]

MKH, i didnt check this post earlier or els i would have been online ,,, i love discussions, just tell me time and i will be there.

Raaga, for practicals the variables to control is everything that is not included in the experiment, and affects the overall results. This is basically the same for every experiment.
 
and for safety issues u got to be specific for which experiment you want.

[MKh]

ohhk vicoden so tonight 09:00 pm GMT time.

[sharleen07]

I have a problem in one of the questions from measuring rate of oxygen uptake..

It would have been better to set up a second, control tube that did not contain living
organisms but had everything else the same.
a. What could cause a movement of the liquid in the control tube towards the respirometer?
b. What could cause a movement of the liquid in the control tube away from the
respirometer?
c. What could you do to correct your estimate of oxygen uptake if the liquid in the
control had moved too?

What is the answer for part c?

[Assi1993]

I have a problem in one of the questions from measuring rate of oxygen uptake..

It would have been better to set up a second, control tube that did not contain living
organisms but had everything else the same.
a. What could cause a movement of the liquid in the control tube towards the respirometer?
b. What could cause a movement of the liquid in the control tube away from the
respirometer?
c. What could you do to correct your estimate of oxygen uptake if the liquid in the
control had moved too?

What is the answer for part c?

the distance moved by liquid in control should be subtracted from the distance moved due to experimental tube