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  1. G

    dont even mention it! Good Luck to you too :D

    dont even mention it! Good Luck to you too :D
    • geek101
    • Profile post comment
  2. G

    AS Biology P1 MCQs Preparation Thread

    w 09 40) ok now the bag with the smallest net size did not have any change, this means that decomposers (microorganisms) are not an important factor here, since microorganisms are small enough to be present in all net sizes. so B and D are gone. now from A and C....A is the most likely one...
  3. G

    ok gimme a minute ill post em up!

    ok gimme a minute ill post em up!
    • geek101
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  4. G

    AS Biology P1 MCQs Preparation Thread

    can someone put up the link for june or nov 2001?? thanx a ton!
  5. G

    sorry i just logged in, i think someone has answered though....

    sorry i just logged in, i think someone has answered though....
    • geek101
    • Profile post comment
  6. G

    AS Biology P1 MCQs Preparation Thread

    n no problemo! Good luck (y)
  7. G

    AS Biology P1 MCQs Preparation Thread

    nov 06 15) as the concentration of sucrose decreases the water potential outside decreases as compared to inside so water moves in. At 0.1 the water potential outside is lesser than inside so water moves it and the %change in length increases. june 06 6) the actual length of the layer is 8nm...
  8. G

    sure....gimme a minute though...

    sure....gimme a minute though...
    • geek101
    • Profile post comment
  9. G

    AS Biology P1 MCQs Preparation Thread

    hmm, ok so looking at the equation again... wp = sp + pp, in the sieve element the water potential is more negative, which means the solute potential is even more negative according to the equation, so if the water potential is lowering cuz of the assimilates the solute potential is even lower...
  10. G

    AS Biology P1 MCQs Preparation Thread

    for a plant cell the water potential = solute potential + pressure potential since pressure potential = 0 so water potential = solute potential (remember thats not the case always) so due to the high conc of assimilates the water potential decreases and so the solute potential also decreases.
  11. G

    AS Biology P1 MCQs Preparation Thread

    cuz the amylopectin part of starch is still not broken yet....so that wouldn't really confirm the reaction cuz a slight blue black color might appear. the best way it so check whether the amylose has broken down to reducing sugar.
  12. G

    AS Biology P1 MCQs Preparation Thread

    huh, i mean.....for sure its wrong!
  13. G

    AS Biology P1 MCQs Preparation Thread

    yep this question has officially proved to be wrong on the paper that was uploaded for this year! the Y is actually X the Z is Y and X is Z
  14. G

    AS Biology P1 MCQs Preparation Thread

    16 - it the question it says the enzyme concentration is constant.... initially the rate of the reaction increases because there are free molecules of enzymes and es complexes form. After some time at X....all the active sites are occupied....so increasing the substrate wont make a difference...
  15. G

    AS Biology P1 MCQs Preparation Thread

    32 - antibodies in plasma actually means that they are antibodies against that blood group, so if the antigens of the blood group enter the body, the body will generate a response against that blood group. for example...Blood group A has antibodies to B, or antibodies against B....so it cannot...
  16. G

    AS Biology P1 MCQs Preparation Thread

    amylase will break down the amylose part of starch into its monomers, which are glucose molecules...and these are reducing sugars...this happens when the reaction takes place. The test for reducing sugars is the Benedicts test. And gives a positive result, a brick red ppt, with reducing sugars...
  17. G

    A question for Psychology students from a non - psychology student...

    well an answer from a non - psychology student...http://voices.yahoo.com/how-photographic-memory-even-if-werent-1877484.html see this! or this...http://www.wikihow.com/Improve-Your-Memory
  18. G

    AS Biology P1 MCQs Preparation Thread

    ok since the DNA has 6000 nucleotides and their are an equal number on each strand (2 strands) so each strand will have 6000 / 2 = 3000 nucleotides. The mRNA is constructed from one strand so the nucleotides on the mRNA is also 3000. Now a codon consists of 3 nuclotides and each codon represents...
  19. G

    AS Biology P1 MCQs Preparation Thread

    no problem at all! here condensation would mean that a peptide bond is being formed....which form after most of translation, which includes the attaching of mRNA to the ribosome, then attachment of the complementary tRNA.....when two tRNA molecules' anticodons join to the codons, a condensation...
  20. G

    AS Biology P1 MCQs Preparation Thread

    16 - here they mean that the molecules are too large to even pass through transporter proteins...and all other processes require movement of molecules through the cell membrane except endocytosis...although this requires the cell membrane but nothing passes through. 13 - its gonna be a protein...
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