Biology; Chemistry; Physics: Post your doubts here!

[Nibz]

are there some chapters that will definatly not come in ATP?? please tell them because im doing last minute prepration today... need help!!!

Just practice past papers.

 

[ashiqbal]

www.practicalbiology.org
good site!

 

[Nizo]

can someone give me notes about, skin hair and sweat for biology ( but not core ) thanks =)

 

[ayeshaK]

Any difficult questions for biology atp ?

 

[guitarist112]

help needed for bio atp ringing experiments and visking tubing

 

[NIM]

guys 2morow is my BIO practical p52.....
i really need something good about teeth's .......
guys really need help.....

 

[SilverCrest]

for bio atp..if the points dont fit in the given graph..can we start without zero?for example in
http://www.xtremepapers.com/papers/...onal O Level/Biology (5090)/5090_s09_qp_6.pdf
question 1 can we start with 3.5 on the x-axis?

 

[ayeshaK]

for bio atp..if the points dont fit in the given graph..can we start without zero?for example in
http://www.xtremepapers.com/papers/...onal O Level/Biology (5090)/5090_s09_qp_6.pdf
question 1 can we start with 3.5 on the x-axis?

Yes u can do that !!

 

[Fallen316]

for bio atp..if the points dont fit in the given graph..can we start without zero?for example in
http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Biology (5090)/5090_s09_qp_6.pdf
question 1 can we start with 3.5 on the x-axis?

you can , but better to start with zero .

 

[ashiqbal]

you can , but better to start with zero .

but yaar in the ms they have mentioned that
clear, correct plotting ; R if from 0
so does this mean that .....what ?

 

[Fallen316]

but yaar in the ms they have mentioned that
clear, correct plotting ; R if from 0
so does this mean that .....what ?

R means something good , thats all i know

 

[convent2012]

i need bio atp notes . help me !!
thanks in advance

 

[SilverCrest]

R means something good , thats all i know

doen't R mean reject?

 

[Vogue]

doen't R mean reject?

yes R means reject

 

[ALI HUSSAIN]

Describe, with practical details, how you would make a stained, temporary slide of pollen from the flower..
plz any1 tell me jaldi. ..

 

[ALI HUSSAIN]

plz smone tell me yrrr. ..wont anyone help me out???

 

[luckywang]

can someone tell me how to test for non-reducing sugar? i remember i saw it at somewhere else but i cant find it now... and is muscle important in bio atp? will there any question about muscle contraction like biceps and triceps...

 

[ashiqbal]

plz smone tell me yrrr. ..wont anyone help me out???

these points will come:
-cut open anther with scalpel
-add dye to pollen grains eg: iodine solution or methylamine blue
-sandwich some pollen between cover-slips
-hold cover-slips together by elastic bands
-make sure there are no air bubbles by lowering cover-slips at angle/remove any air bubbles
-place cover-slips on glass slides

please correct me or add any point missing.

 

[SilverCrest]

Describe, with practical details, how you would make a stained, temporary slide of pollen from the flower..
plz any1 tell me jaldi. ..

add a drop of water on the slide as a mountant
brush off pollen onto slide
add few drops of methylene blue to stain it
now lower the coverslip at an angle to prevent air bubbles

can someone tell me how to test for non-reducing sugar? i remember i saw it at somewhere else but i cant find it now... and is muscle important in bio atp? will there any question about muscle contraction like biceps and triceps...

first heat the non-reducing sugar in HCl..this will break it down to REDUCING SUGAR
then add NaOH to neutralise it
then perform the benedict's test

 

[ashiqbal]

can someone tell me how to test for non-reducing sugar? i remember i saw it at somewhere else but i cant find it now... and is muscle important in bio atp? will there any question about muscle contraction like biceps and triceps...

for non-reducing sugar? you mean starch or if a reducing sugar is not present?

and muscle contraction of biceps and triceps is not so much important. just read it once