biology practical

[dumb human]

It asks you to use the line between J and R and eye piece graticule scale to find the length. Which means you have to start all your reading from J and count the number in divisions it takes from J to L/M/N/P.

From P to L it should be 2 units! Do the rest and you'll know

mahabaloch like this.....the way Dukeofwin explained...... =P

 

[dumb human]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s13_qp_35.pdf

how we do question 2 part a?

i tagged you in a comment, do check that out!

 

[malk mohamed]

how can we draw cell under go mitosis from under microscope how we can draw can some one draw it for us

 

[dumb human]

how can we draw cell under go mitosis from under microscope how we can draw can some one draw it for us

CIE wont ask such question
Or they do?
like i never saw them asking this in practicals =P

 

[mahabaloch]

i tagged you in a comment, do check that out!

sorry but i don't get that

 

[Karim Nabil]

joanna omar here you go..

 

[Dukeofwin]

I personally don't think it can come!

Well with what assumption you support it with? Because with our teachers Visking tub experiment is taken way too seriously

 

[joanna omar]

joanna omar here you go..

Thankss a Bunch !

 

[redd]

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

But we aint using any kind of enzyme in the question?

 

[Omer malik]

are you there on facebook?
if you are, send me the link...i will message you there!

where should i send you my link? you send yours ill msg you

 

[MYLORD]

Here in this table when making the serial dilutions , can some1 help me to complete this table. We use C1V1=C2V2 Formula but can some1 help me with this i really get confused.

 

[MYLORD]

Xerophytes

 

[joanna omar]

Here in this table when making the serial dilutions , can some1 help me to complete this table. We use C1V1=C2V2 Formula but can some1 help me with this i really get confused.

View attachment 43926

see here I guess ..you have to make up any volume of glucose and any of water but thier addition togther should add up to 20 cm3

like he gave you in last one 12 and 8

we kan make 6 and 14 and so on

 

[MYLORD]

Food tests

 

[MYLORD]

see here I guess ..you have to make up any volume of glucose and any of water but thier addition togther should add up to 20 cm3

like he gave you in last one 12 and 8

we kan make 6 and 14 and so on

Thnx soo much !!!

 

[joanna omar]

see here I guess ..you have to make up any volume of glucose and any of water but thier addition togther should add up to 20 cm3

like he gave you in last one 12 and 8

we kan make 6 and 14 and so on

Noo.... sorrry here also they gave the conc %


so according to table it gonna be like that

6 glucose and 14 water
then 8 glucose and 12 water
then 10 glucose and 10 water

 

[redd]

(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

hey, well i couldnt get u here, i didnt do it this way
now that we have 16 stomata(as in ur case) in 1/4 part so for the whole we have 16x4=64.
so there are 64 stomata in 0.8 mm^2 and per 1 mm^2 we should divide 64 by o.8mm^2 to get for 1mm^2.
isn't it?

 

[redd]

Thanks for the help dumb human

I need help in the following paper:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s13_qp_33.pdf
Question #2a1 thats it

Just count the div of eyepiece for each layer and then adjust them accordingly so that they all add up to the total no given to us. then according to those div draw in the next part proportionally.

 

[redd]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s13_qp_35.pdf

how we do question 2 part a?

Count the eye div for each layer, like for J i think they are 5, then for M they are 7 and so on, write the div and make sure that they all sum up to 43(Div given from K to R) and then make the diagram in the next part accordingly

 

[MYLORD]