biology practical

[dumb human]

Very Good stuff there! Thanks *God Bless*
If you do get some info on our variant slip it in here! II can be sure all of us would defo pray you (Y)

awwww ^_^
thank you
Gob bless all of you =D

i will try =P

 

[Dukeofwin]

The last pic =D

Which variant of Oct/Nov 2013 is this?
Plus what were you guys asked to draw in your variant?

 

[dumb human]

Which variant of Oct/Nov 2013 is this?
Plus what were you guys asked to draw in your variant?

i gtg sorry
i will be back at night, and i will answer all your questions =D

mom is calling you know =P
take care ^_^

 

[Dukeofwin]

i gtg sorry
i will be back at night, and i will answer all your questions =D

mom is calling you know =P
take care ^_^

We are in no rush! Still have 2 days...

 

[redd]

Well.. i knew because my teacher told me =P

Ohhokay, well, i personally think that yeast thing might not be there this time. Well lets see what it brings for us. May Allah help us all. Ameen

 

[MYLORD]

Hey guys
I had a doubt if some1 would help it would be a great help !!
In the microscopy part when they ask u to contrast between 2 figures what should be the main things that should contrasted on ?
like arrangement of vascular bundle . Pls add to this list bcuz i get confused here .

 

[dumb human]

Ohhokay, well, i personally think that yeast thing might not be there this time. Well lets see what it brings for us. May Allah help us all. Ameen

Ameeen Suma Ameeeeeeeeeeeen Ya Rab =D

 

[dumb human]

We are in no rush! Still have 2 days...

Oh sorry..i had to go..mom you know...ahh....
Well i think my teacher wrote the wrong year...i searched for all 2013, but its not there...
but did you understand how do draw a plan diagram?
its like you should only draw the layers of different cells, and the lines should be all straight and you have to mark at-least 3 things on your drawing, if they dont really specify that mark vascular bundle(for example)

 

[princessnoor]

which school r u from?

 

[redd]

Ameeen Suma Ameeeeeeeeeeeen Ya Rab =D

Please help me with this, why are there two answers to the (V) part and the second one has no relation with the question itself.
W10/35

 

[princessnoor]

guys just one day left for 34...!!!

 

[aaaamfa]

I need help in the following question paper:
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w13_qp_35.pdf
In question # 2 b onwards

Need help urgently any explanation would be great favor

 

[dumb human]

Please help me with this, why are there two answers to the (V) part and the second one has no relation with the question itself.
W10/35

I think the second answer is for those candidates who tried to correct the error! which was supposed to be an improvement!

 

[dumb human]

I need help in the following question paper:
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w13_qp_35.pdf
In question # 2 b onwards

Need help urgently any explanation would be great favor

i will reply you, just lemme read the questions carefully okay wait a bit... =)

 

[dumb human]

i will reply you, just lemme read the questions carefully okay wait a bit... =)

Okay! as it says-->The smallest measurement on this stage micrometer is 0.1 mm.
(b)(i) Therefore, Your RADIUS is 0.5 (half of the scale)
Formula for Area is given---> πr2
Therefore, 3.14 x 0.5 (square) = 0.785 = 0.8 (Round the number to the nearest decimal point)

 

[dumb human]

(b)(ii) sample number of stomata in the quarter of the field of view shown in Fig. 2.3. = 16 ( i got 16 complete stomata) and you Mark clearly on Fig. 2.3 each of the stomata counted okay? =)
Then you have to multiply your answer into 0.1 (as The smallest measurement on this stage micrometer is 0.1 mm)
Therefore, 16 x o.1 = 1.6
Now divide your answer by (b)(i)'s Area
That is, 1.6 / 0.8 = 2

Now that you know the area of quarter of the field, you can Calculate the number of stomata per mm2. (the whole diagram)
Therefore multiply your answer into 4 to give the total.
That is, 2 x 4 = 8

 

[dumb human]

(b)(ii) sample number of stomata in the quarter of the field of view shown in Fig. 2.3. = 16 ( i got 16 complete stomata) and you Mark clearly on Fig. 2.3 each of the stomata counted okay? =)
Then you have to multiply your answer into 0.1 (as The smallest measurement on this stage micrometer is 0.1 mm)
Therefore, 16 x o.1 = 1.6
Now divide your answer by (b)(i)'s Area
That is, 1.6 / 0.8 = 2

Now that you know the area of quarter of the field, you can Calculate the number of stomata per mm2. (the whole diagram)
Therefore multiply your answer into 4 to give the total.
That is, 2 x 4 = 8

And (C) The table is perfectly given in MARK SCHEME =)


I hope you understood now =D

 

[aaaamfa]

Okay! as it says-->The smallest measurement on this stage micrometer is 0.1 mm.
(b)(i) Therefore, Your RADIUS is 0.5 (half of the scale)
Formula for Area is given---> πr2
Therefore, 3.14 x 0.5 (square) = 0.785 = 0.8 (Round the number to the nearest decimal point)

How did u get 0.5 as the radius

 

[aaaamfa]

(b)(ii) sample number of stomata in the quarter of the field of view shown in Fig. 2.3. = 16 ( i got 16 complete stomata) and you Mark clearly on Fig. 2.3 each of the stomata counted okay? =)
Then you have to multiply your answer into 0.1 (as The smallest measurement on this stage micrometer is 0.1 mm)
Therefore, 16 x o.1 = 1.6
Now divide your answer by (b)(i)'s Area
That is, 1.6 / 0.8 = 2

Now that you know the area of quarter of the field, you can Calculate the number of stomata per mm2. (the whole diagram)
Therefore multiply your answer into 4 to give the total.
That is, 2 x 4 = 8

I totally understood this part

Excellent explanation i have been trying to solve this since 2days but finally got it now
If i knew u explained so well i would have posted this question the first day itself.

 

[dumb human]

How did u get 0.5 as the radius

The smallest measurement on this stage micrometer is 0.1 mm.
So every line is 0.1
and half radius is 5 lines.....that is 5 x o.1 = 0.5