Physics, Chemistry and Biology: Post your doubts here!

[sj0007]

In bio p6, when they ask us to make a large labelled drawing of an organism, to what magnification do they expect us to draw?

My teacher told me to draw it at least to the magnification of 1.5 or if the space is too much u can also do it twice..... Hope it helps...

 

[sj0007]

In ON2013 61, question 1c, there is a range for the magnification. So..

Is there??

 

[sj0007]

Hello Everyone
My question is about physics
paper: 0625/61/O/N/12
Question: 1 (c)
In part (b) I got 210 (which is correct) and when I tried to use it in the equation mentioned in part (c) I got the answers:
11, 19, 31, 39, 50
while the correct answers are:
1, 9, 21, 29, 40

Thanks

Maybe the answers in the ms are wrong?? But anyways u will get marks for those answers cuz it says that even incorrect D values were allowed.....

 

[sj0007]

Ummm does anyone know any thread that is about the paper 6 of bio? Or if someone has any helpful notes, can you please attach it here? Thnx

 

[My Name]

Ummm does anyone know any thread that is about the paper 6 of bio? Or if someone has any helpful notes, can you please attach it here? Thnx

Check the attached file,it'll help you for revision.

 

[sj0007]

Check the attached file,it'll help you for revision.

THANKU SOOO MUCH!!!!!
This is exactly what I was looking for!!!!!!

 

[My Name]

THANKU SOOO MUCH!!!!!
This is exactly what I was looking for!!!!!!

Welcome.
Glad I could help.

 

[sj0007]

Welcome.
Glad I could help.

How many sub are u giving this may/june?

 

[My Name]

How many sub are u giving this may/june?

0

 

[sj0007]

0

Okay.............lol.............so u r done with ur IG's ? and u r in Alevels?

 

[My Name]

Okay.............lol.............so u r done with ur IG's ? and u r in Alevels?

Yep. I'm done with them.
Yes.

 

[sj0007]

Yep. I'm done with them.
Yes.

Good luck for them, I heard they r pretty hard............... but I am sure u can ace them!! In Shaa Allah

 

[My Name]

Good luck for them, I heard they r pretty hard............... but I am sure u can ace them!! In Shaa Allah

Thank you.
Best of Luck for your O levels! ^_^ Enjoy em while you still can. ,_,
In Sha Allah and In Sha Allah your result will be full of A*s!

 

[sj0007]

Thank you.
Best of Luck for your O levels! ^_^ Enjoy em while you still can. ,_,
In Sha Allah and In Sha Allah your result will be full of A*s!

THANKS!!!
Same to u!!

 

[sj0007]

Whenever they ask for chromatography in paper 6, how do we know exactly what solvent we have to use like it's either water or ethanol (mostly)??
Thnx.........

 

[My Name]

How to solve Q 2 (c) (ii) of 0610/62/O/N/10 ?? This question is getting my nerves !!! We are asked to calculate the actual length of the shell but the magnification isn't given. My Name

I was looking for something and juts saw this did NOT get the tag alert!
Anyway I'm not sure if someones answered but here is how it goes
Below the shell they gave you a scale bar that says 3.omm when you measure this with your ruler you will get 2.5cm=25mm Okay?

So you know that 3mm is actually going to be 25mm
Now measure the shell in Fig 2.2 you'll get it as 3.8cm=38mm but thats how it is in the figure and not the ACTUAL lenght.

So the actual size will be the new length/magnification so do the math ( you know how we say if 3 mm is 25 mm then how much will 38mm be) it'll be like this:
38x3/25 and you get an answer approx 4.56mm
Hope that helps.

 

[My Name]

Whenever they ask for chromatography in paper 6, how do we know exactly what solvent we have to use like it's either water or ethanol (mostly)??
Thnx.........

Yes,it is water and ethanol mostly.
If the question asks you about grass then remember : Grass with ground with ethanol rather than water because chlorophyll is more soluble in ethanol.

 

[sj0007]

Yes,it is water and ethanol mostly.
If the question asks you about grass then remember : Grass with ground with ethanol rather than water because chlorophyll is more soluble in ethanol.

Thanks............. again!!

 

[qwertypoiu]

Thanks............. again!!

where in KSA are u from?

 

[qwertypoiu]

Thanks............. again!!

btw organic compounds usually dissolve well in ethanol, and polar substances (or non-organic) dissolve well in H2O