AS Biology P34 Guesses

[Chucky]

Question 1

Investigation of breakdown of glucose by yeast/ involves serial dilution of the glucose into different concentrations and probably carrying out the Benedict's test afterwards.
OR
Something like this:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s09_qp_32.pdf
OR this:
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w12_qp_35.pdf
Question 2

Drawing the graph of a given relationship between two quantities (Apply normal graph drawing rules here)

Question 2/3
Drawing microscope slides already provided (easy) labeling one or two parts and then making a table to compare two different slide images??
For comparison in the table, always make one column called "features" and two other columns under which you describe the differences. (check mark scheme to see what I mean).

Feel free to use this thread for Practical notes (credits to the writer):
https://www.xtremepapers.com/community/threads/biology-practical-notes.4718/

Use this thread at your own risk. PM ME OTHER ADDITIONS THIS BY TONIGHT AND HELP THE COMMUNITY

 

[mahady]

Chu

Question 1

Investigation of breakdown of glucose by yeast/ involves serial dilution of the glucose into different concentrations and probably carrying out the Benedict's test afterwards.
OR
Something like this:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s09_qp_32.pdf
OR this:
http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w12_qp_35.pdf
Question 2

Drawing the graph of a given relationship between two quantities (Apply normal graph drawing rules here)

Question 2/3
Drawing microscope slides already provided (easy) labeling one or two parts and then making a table to compare two different slide images??
For comparison in the table, always make one column called "features" and two other columns under which you describe the differences. (check mark scheme to see what I mean).

Feel free to use this thread for Practical notes (credits to the writer):
https://www.xtremepapers.com/community/threads/biology-practical-notes.4718/

Use this thread at your own risk. PM ME OTHER ADDITIONS THIS BY TONIGHT AND HELP THE COMMUNITY

Chucky youre a life saver man .. Best hou

 

[thinkahead]

any idea about the microscope slide?

 

[Chucky]

any idea about the microscope slide?

Relax, it's not that difficult. They'll ask us to draw a power plan diagram. Just look at that notes link I gave in the first post and you'll get an idea on how to draw slides easily.

 

[mahady]

Relax, it's not that difficult. They'll ask us to draw a power plan diagram. Just look at that notes link I gave in the first post and you'll get an idea on how to draw slides easily.

Dude how do we carry out serial dilutions??

 

[Chucky]

Dude how do we carry out serial dilutions??

Quoting a post from another thread:

There are two methods of serial dilution:

First one is that you use dynamic sources, meaning for example initially you have 20 cm3 of 1% sucrose conc., then you want to reduce the concentration by half in each successive dilution. So what you do is that in the second beaker, you add 10 cm3 of 1% solution and 10 cm3 of water, halving the concentration to 0.5%. Then using this second beaker as source, take 10 cm3 of solution in this beaker, and add it to a new beaker, and add 10cm3 water, so it again gets halved, 0.25%, on and on...

Second method is that in an experiment you're asked to investigate effect of concentration (of e.g. sucrose), and you're given at least 50 cm3 of 1% conc. sucrose. What you want to do is to use this source wisely so you have a range of 1% to 0% of sucrose.
So for that, you make a table, and depending on how many beakers they have provided (usually 5), you choose your dilutions.
Total volume must be kept constant (e.g. 20cm3), and so you start with 20cm3 of sucrose (1%), and no water, then dilute by e.g. 5cm3 sucrose 15cm3 water (0.25%), and finally 0 cm3 of sucrose and 20cm3 of water (0%).

 

[sam1234]

http://papers.xtremepapers.com/CIE/Cambr

Chu

Chucky youre a life saver man .. Best hou

idge International A and AS Level/Biology (9700)/9700_s09_qp_32.pdf
in queston 1 is it even asking for serial dilution? niether is it mentioned in the question to perform serial dilutions?

 

[mrnt3250]

http://papers.xtremepapers.com/CIE/Cambr

idge International A and AS Level/Biology (9700)/9700_s09_qp_32.pdf
in queston 1 is it even asking for serial dilution? niether is it mentioned in the question to perform serial dilutions?

Making different concentrations (the table) means dilution

 

[sam1234]

Making different concentrations (the table) means dilution

I meant SERIAL DILUTION.

 

[faizay warsi]

there are chances of stem and roots slides ........

 

[Sheikh Nahiyan]

Question 1

Investigation of breakdown of glucose by yeast/ involves serial dilution of the glucose into different concentrations and probably carrying out the Benedict's test afterwards.
OR
Something like this:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s09_qp_32.pdf
OR this:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w12_qp_35.pdf
Question 2

Drawing the graph of a given relationship between two quantities (Apply normal graph drawing rules here)

Question 2/3
Drawing microscope slides already provided (easy) labeling one or two parts and then making a table to compare two different slide images??
For comparison in the table, always make one column called "features" and two other columns under which you describe the differences. (check mark scheme to see what I mean).

Feel free to use this thread for Practical notes (credits to the writer):
https://www.xtremepapers.com/community/threads/biology-practical-notes.4718/

Use this thread at your own risk. PM ME OTHER ADDITIONS THIS BY TONIGHT AND HELP THE COMMUNITY

CHUCKY CHUCKY CHUCKY! THANKS BRO <3

Bro. Just tell me this. What slide may come? Plant cell or stem or root? Can you plz just specify it? Plzzzzz?

 

[faizay warsi]

CHUCKY CHUCKY CHUCKY! THANKS BRO <3

Bro. Just tell me this. What slide may come? Plant cell or stem or root? Can you plz just specify it? Plzzzzz?

there are chances of stem and root....

 

[Sheikh Nahiyan]

there are chances of stem and root....

You sure bro? Plz tell me

 

[terry jefferson]

You sure bro? Plz tell me

yeah mate.....i heard it would be monocot and dicot roots and stems as well

 

[Sheikh Nahiyan]

yeah mate.....i heard it would be monocot and dicot roots and stems as well

GREAT BRO THANKS

 

[redd]

do we have to show stomata wen drawing plan diagrams of leaves??
n wat is the uncertainity in a mm ruler wen measuring lengths??

 

[Sheikh Nahiyan]

do we have to show stomata wen drawing plan diagrams of leaves??
n wat is the uncertainity in a mm ruler wen measuring lengths??

No. No stomata when drawing plan diagrams. As far as I know. We only draw it in detailed diagram!

Uncertainty is +- 0.5mm I guess :L

 

[Dukeofwin]

And I thought I was in a Lost World when No one came up with anything till Yesterday! But this post just made my Day! Thanks a big to CHUCKY.

Question 1

Investigation of breakdown of glucose by yeast/ involves serial dilution of the glucose into different concentrations and probably carrying out the Benedict's test afterwards.
OR
Something like this:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s09_qp_32.pdf
OR this:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w12_qp_35.pdf
Question 2

Drawing the graph of a given relationship between two quantities (Apply normal graph drawing rules here)

Question 2/3
Drawing microscope slides already provided (easy) labeling one or two parts and then making a table to compare two different slide images??
For comparison in the table, always make one column called "features" and two other columns under which you describe the differences. (check mark scheme to see what I mean).

Feel free to use this thread for Practical notes (credits to the writer):
https://www.xtremepapers.com/community/threads/biology-practical-notes.4718/

Use this thread at your own risk. PM ME OTHER ADDITIONS THIS BY TONIGHT AND HELP THE COMMUNITY

Also not forgetting this post, Might come in Handy Thanks FAIZAY WARSI

there are chances of stem and roots slides ........

 

[redd]

No. No stomata when drawing plan diagrams. As far as I know. We only draw it in detailed diagram!

Uncertainty is +- 0.5mm I guess :L

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s12_qp_32.pdf

q#1 a(iv) they say it is =/- 1.0mm ??

 

[Sheikh Nahiyan]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s12_qp_32.pdf

q#1 a(iv) they say it is =/- 1.0mm ??

Lol.. forgot to mention it! Its 0.5%