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A level Biology: Post your doubts here!
Monoclonal antibodies are obtained from clones of single B cells. Unfortunately, B cells will not grow in culture and this problem is solved ONLY by fusing them with cancerous B cells..the hybridomas then grow in culture and secrete antibodies.. -
A2 mechanics doubt..
I did this following question on elasticity.. I wanna know why we dont double the compression since the force is acting at both ends... http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9709%20-%20Mathematics/9709_w09_ms_51.pdf (mark scheme) -
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Mathematics: Post your doubts here!
Thank you!! btw wat abt the 3rd part of my other q? -
Mathematics: Post your doubts here!
Marking scheme asks us to justify our statement..no particular reason given though.. -
Mathematics: Post your doubts here!
The ans is 2 nt 7. http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9709%20-%20Mathematics/9709_s04_qp_2.pdf -
Mathematics: Post your doubts here!
Another Q.. In relation to trapezium rule it is asked to state if its underestimate or overestimate along with a reason.. Wat's the reason that shoud be given? -
Mathematics: Post your doubts here!
can any1 pls help me solve the 3rd part of it.. -
A level Physics advice
Im doing my A2 in may/june inshaallah but did my As last year. For As physics u need to do a lot of MCQ questions as they are time consuming and u get like only 1.5mins per q's. Paper 2 is quite manageable, but last year we gt sumthing like "designing an experiment" (sumtin dat waz new... -
Physics: Post your doubts here!
in this case we don't need to consider Rf and R and complicate ourselves. Vout=Rf/R x( V2-V1) Vout=0, hence V2-V1=0 V2=V1 So why need to consider Rf and R? In the third part since Vout is not equal to zero we need to consider Rf and R and in that case they've given us... -
Mathematics: Post your doubts here!
OMG this iz like so easy.... thank you!!:) -
A level Biology: Post your doubts here!
http://www.xtremepapers.com/CIE/International A And AS Level/9700 - Biology/9700_s05_qp_4.pdf http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9700%20-%20Biology/9700_s05_ms_4.pdf question no 3b.. -
Mathematics: Post your doubts here!
walaikumusalam.. yes i did equate them to zero but dunno how to get the markscheme answers -
Mathematics: Post your doubts here!
can sumone help me wid the 2nd part of it.. -
A level Biology: Post your doubts here!
Can sum1 tell me the role of motor neurone in the reflex arc? I mean "explain" coz i dnt seem to understand the markscheme points.. -
------------*****Help with math M1*****------------
Walaikumusalam. In part i there are 2 different kinds of motion involved. For the first 20s its constant motion and for the next 4 its decelerating. For the first part apply speed=distance/time and u get the distance as 140m. For the second part uv gotta use equations of motion, where u=7, v=0... -
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Biology MCQ thread..!!
Cz u see there is no increase/decrease in the sizeof the strip. One is folded( i mean like curved), while the other is not folded. -