Physics, Chemistry and Biology: Post your doubts here!

[sj0007]

So in my paper, (bio - 61) we had to describe any visible differences between the cross section of an artery and vein
So I mentioned the lumen, the muscular wall and the elastic wall.............. my ques is that are muscular wall and the elastic wall two different things????
Thnx.............

 

[sj0007]

Hey what did you write for that question in which you had to modify the experiment ??

(hope u dont mind me answering the ques) I wrote a wider range of pH values and shorter time intervals............ what abt u?

 

[My Name]

So in my paper, (bio - 61) we had to describe any visible differences between the cross section of an artery and vein
So I mentioned the lumen, the muscular wall and the elastic wall.............. my ques is that are muscular wall and the elastic wall two different things????
Thnx.............

The answers for that can be the following points:
Thick muscular walls of artery
Narrow lumen as compared to vein
The middle layer in artery is thicker than in vein

By elastic you mean flexible?If yes, then that would (in my opinion) be wrong since you can't SEE it.

 

[sj0007]

The answers for that can be the following points:
Thick muscular walls of artery
Narrow lumen as compared to vein
The middle layer in artery is thicker than in vein

By elastic you mean flexible?If yes, then that would (in my opinion) be wrong since you can't SEE it.

Hmm ur points are pretty good
By the elastic, I didnt really elaborate anything, I just wrote Elastic walls (under the feature)............ thick (arteries) and thin (veins)
Thanx though........... (I knew my that point would be wrong )

 

[skyangel]

Guyzz little time left have bio paper 3 on 1r may how should I revise everything in short time and also have a fear if I forget something in exam and ya do the last 2 chap are soo important cuz didnt yet study them

 

[skyangel]

H

I wrote that........but everything was controlled in that experiment so I guess there were many options...............

Hey i wrote repeat the experimant is it ok

 

[Mr.Physics]

H

Hey i wrote repeat the experimant is it ok

No I don't think so !! You had to write the variables which were controlled

 

[Mr.Physics]

The answers for that can be the following points:
Thick muscular walls of artery
Narrow lumen as compared to vein
The middle layer in artery is thicker than in vein

By elastic you mean flexible?If yes, then that would (in my opinion) be wrong since you can't SEE it.

Lol I mentioned lumen and wall but left the 3rd block blank !! Btw how did you guyz make that table which was in the end ?? I spent almost 20 min on that !!

 

[Muaaz Iqbal]

(hope u dont mind me answering the ques) I wrote a wider range of pH values and shorter time intervals............ what abt u?

I wrote PH and Volume of crushed Fruit.

 

[My Name]

Hmm ur points are pretty good
By the elastic, I didnt really elaborate anything, I just wrote Elastic walls (under the feature)............ thick (arteries) and thin (veins)
Thanx though........... (I knew my that point would be wrong )

Lol I mentioned lumen and wall but left the 3rd block blank !! Btw how did you guyz make that table which was in the end ?? I spent almost 20 min on that !!

You people are talking about 2015 M/J exam?
DON NOT DISCUSS THE EXAM until 24 hours. [XPC rules]

 

[My Name]

Guyzz little time left have bio paper 3 on 1r may how should I revise everything in short time and also have a fear if I forget something in exam and ya do the last 2 chap are soo important cuz didnt yet study them

Hey you can check out this website for revision
http://biology-igcse.weebly.com/pdf.html ( its according to 2014 syllabus so check your syllabus and follow that)
There is still time you will do great In Sha Allah don't worry.
What I suggest is that when you revise don't have lets just get this over with mode but take the time to absorb the thing.After you are done revising a few chapters solve papers so you'll see how much clear you are in that topic and then just continue.

PS it also depends on when you have your paper if you have it like tomorrow then you should go for the chapter you haven't studied.

 

[Wâlèé Atèéq]

will the chems paper 61 will be totally changed like the bio one was..??

 

[sohaib ul haq]

do any one have candidate response booklet of following :

ict 0417
physics 0625
chemistry 0620

if so then plz upload it over here or email me at [email protected] plz if anyone hav it plz giv b/c i hav no time

 

[sj0007]

Lol I mentioned lumen and wall but left the 3rd block blank !! Btw how did you guyz make that table which was in the end ?? I spent almost 20 min on that !!

I did it like this:

 

[sj0007]

will the chems paper 61 will be totally changed like the bio one was..??

No, I don't think so............ all the syllabus is changing in 2016
But the bio paper wasn't that different................. right?

 

[sj0007]

That seems so right. Congrats!

Thanks!!!! How was ur paper???

 

[sj0007]

I wrote PH and Volume of crushed Fruit.

In modifying the experiment?

 

[sohaib ul haq]

what does transaction mean and what is transaction file plz reply fast

 

[Mr.Physics]

I did it like this:
View attachment 53290

You didn't mention increase in heart rate as this was the main part of the question !!

 

[Mr.Physics]

No, I don't think so............ all the syllabus is changing in 2016
But the bio paper wasn't that different................. right?

It was really different !! no graphs no food tests ! They were piece of cakes !!