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  1. X

    AS Physics P1 MCQs Preparation Thread.

    is the answer B? i guess its dne lyk dis:- atm=P0 so inside the tube the pressure will be 10% lesser, dat is 90% of the atm so pressure inside=9P0/10 pressure=rho*g*h so h=P/(rho*g) =9P0/10 divided by rho*g =9P0/(10*rho*g)
  2. X

    AS Physics P1 MCQs Preparation Thread.

    Q12 :- p(b4 collision)=3mv-2mv=mv total mass aftr collisn=m+3m=4m let the speed after collision be say x and v noe dat p(b4 collisn)=p(after collisn) thus, mv=4mx so x=mv/4m=v/4 ==> A Q.28:- first considr whts given so, wavelnth=7*10^-7m (red light) x=2mm= 2*10^-3m (we divided by 2 bcos 4 is...
  3. X

    AS Biology P1 MCQs Preparation Thread

    is the answer cholestrol? n according to me it cant be phospholipid bcos the hydrophilic heads of the phospholipid bilayer form hydrogen bonds with water molecules and thus help maintaining the membrane's stability in watery surroundings and not fluidity!
  4. X

    AS Biology P1 MCQs Preparation Thread

    oooooo....ok thnx! :)
  5. X

    AS Biology P1 MCQs Preparation Thread

    ya dat is wt d markscheme says bt how cum mRNA in present in all of dem? i thot its only present in the nucleus....
  6. X

    AS Biology P1 MCQs Preparation Thread

    which of the following cell components contain mRNA? 1. chloroplasts 2. mitochondria 3.nucleus 4.rough ER
  7. X

    AS Biology P1 MCQs Preparation Thread

    m/j/09 ==> it is obvious dat if semi-conservative replications takes place den the % of cells containing N15 will decrease and N14 will increase. so v hav to curves with a decrease in % cells containing N15...the answer can't b D bcos if the 2nd generation has 50% cells den the 3rd generation...
  8. X

    AS Biology P1 MCQs Preparation Thread

    in layman's language, fluidity basically refers to the viscosity of the membrane while stability is the ability of the membrane to be stable in watery surroundings...hope u got it! :p
  9. X

    AS Physics P1 MCQs Preparation Thread.

    Q18- we subtract the pressure bcos the pressure at the surface is 100kPa and not 0 kPa...so the total pressure has to be 450-100 kPa
  10. X

    How was your biology paper 22? I am so sad and devastated.

    what is soppers?
  11. X

    How was your biology paper 22? I am so sad and devastated.

    hehehe....kk...thnx! i noe m too late fr a reply! :p
  12. X

    AS Biology P1 MCQs Preparation Thread

    m havng a few doubts in 9700/11/O/N/11.... Q5, Q14, Q20, Q24, Q28, Q29, Q30, Q36 AND Q40 pls post explanations/solutions for these questions here's the link for the ppr and the ms.... paper==>...
  13. X

    AS Physics P1 MCQs Preparation Thread.

    what is the answr for this question...as in the markscheme? n vic year is this btw?
  14. X

    AS Physics P1 MCQs Preparation Thread.

    They have asked for no. of wavelengths per unit tym...so basically u hav to calculate the frequency so dat is speed/wavelength = (3*10^8)/(600*10^-9) =5*10^14 ==> C
  15. X

    AS Physics P1 MCQs Preparation Thread.

    guys can v discuss O/N/11 pls? m having many doubts is this paper... Q2, Q7, Q18, Q23, Q26, Q31, Q32, Q33 AND Q37 pls post explanations/ solutions for the following questions... here' s the link-...
  16. X

    How was your biology paper 22? I am so sad and devastated.

    isnt phosphodiester bond present only in phospholipids? and not between nucleotides? well....i jst thot so! :p :p
  17. X

    Biology Paper 22 ( How was it? )

    dats an enzyme...nt a bond!
  18. X

    Biology Paper 22 ( How was it? )

    and wht type of covalent bond is present between the 2 nucleotides?
  19. X

    Biology Paper 22 ( How was it? )

    which fruit wud b a "drought-resistant" fruit in Q.3?
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