AS Biology P1 MCQs Preparation Thread

[1357911]

o/n 2010 varient 11 ques 22 anyone help???

 

[Alicee]

èWhen a macrophage engulfs a pathogen, it can expose the antigen to a T-helper cell which releases cytokines.
èThis stimulates the B cells to divide into plasma cells and secrete antibodies. Other B cells become memory cells.

èKiller T-Cells search for foreign antigens on cells, and attach to it, releasing toxic substances.

thanks a lot!!

 

[1357911]

o/n 2010 varient 11 ques 22 and 38 anyone help.... Plzzzz

 

[Ikram Khaliq]

o/n 2010 varient 11 ques 22 anyone help???

you have too many questions on the last day. open up the examiner report for each paper. it has explanations of all difficult questions.

 

[1357911]

you have too many questions on the last day. open up the examiner report for each paper. it has explanations of all difficult questions.

Thanks and sorry. If u cant help its okay.......

 

[SalmaXXXX]

O/N12 p13 the answer is D btw i don't get it waisay. how can less elastic alveoli be seen? xD

I had the same argument with my teacher

 

[SalmaXXXX]

june 2007 Question 3 please !
http://papers.xtremepapers.com/CIE/...and AS Level/Biology (9700)/9700_s07_qp_1.pdf

 

[darkxangel]

Can someone tell me how to solve this question? !

 

[Zarif009]

Can someone tell me how to solve this question? !View attachment 28952

The answer is C because one cardiac cycle lasts for .75 seconds...
One minute has 60 seconds so divide 60 by .75 and the answer will be 80

 

[1357911]

The answer is C because one cardiac cycle lasts for .75 seconds...
One minute has 60 seconds so divide 60 by .75 and the answer will be 80

Zarif009 o/n 2010 varient 11 ques 22 and 38 can u plzz help....

 

[Zarif009]

Zarif009 o/n 2010 varient 11 ques 22 and 38 can u plzz help....

In question 38 multiply all the quantities of each row together to get the total energy... then arrange that total value in ascending order

In question 22 in 3 when uracil is present C is 'nil' so thats thymine. Then B is always matching in composition with Uracil or Thymine so B is adenine
because of base pairing of A with T/U
hope it helped

 

[1357911]

Thanks. Got it.
Can i ask u one more question
m/j 2010 varient 11 question 14

 

[selena]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w08_qp_1.pdf q1 plz

 

[kingos3111]

guys do we need a ruler tell me please

 

[Xainab]

Yes,

guys do we need a ruler tell me please

Yes, to measure observed length of diagrams and all.

 

[1357911]

guys do we need a ruler tell me please

Its required. You may get a ques to find out the magnification

 

[white rose]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w08_qp_1.pdf q1 plz

luk greatest no.og cells will only be seen when magnifiacation is least...so least for eyepiece is x5 n for objective it is x10.
hope u get it

 

[darkxangel]

?????

 

[kiran11]

please help w11 variant 11 Q24

 

[Pwincessajwa]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_12.pdf q 2,4,8,9 ,20 anyone plz ???? have exam tmorw