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Recent content by tornado

  1. T

    Biology AS Edexcel Unit 3

    sequence of observing mitosis and the reasons: 1- cut the final 5mm of a root tip from a plant such as onion or garlic bulb. this is where mitosis occurs in the root 2- add stain such as orcein and add an acid (hydrochloric acid) stain highlights chromosomes and acid soften the tissues 3- genty...
  2. T

    Biology AS Edexcel Unit 3

    hydrochloric acid is used to break down the pectins that holds the cells together ;)
  3. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    i think the answer is b??
  4. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    ok..... when the mixture was added to ethanol, their was still a residue, which means the mixture does not dissolve in ethanol (insoluble) when added to water, the crystals was obtained from the filtrate so the mixture dissolved (soluble)
  5. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    yes thanks but i don't understand the ionic equation
  6. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    no c you are correct :)
  7. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    i want to know the formula of the reaction of answer b (complete)
  8. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    yes about the surface area. increasing the surface area will speed up the reaction and more particles will be able to react
  9. T

    ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

    hi friend i want to know. is copper better to be the core or steel??
  10. T

    Biology paper 12 discussion

    what was the question exactly
  11. T

    Biology paper 12 discussion

    is ther any other question to discuss it???
  12. T

    Biology Paper 12 :D

    please me also
  13. T

    Biology paper 12 discussion

    hey add meeee
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