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  1. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    4 P700/P1, absorbs at 700(nm) ; 5 P680/P11, absorbs at 680(nm) ; what does this means
  2. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    ok dont forget
  3. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    Describe the structure of a myelinated sensory neurone. [7] (b) Explain how an action potential is transmitted along a sensory neurone. [8] [Total18 1 nucleus in cell body ; 2 (long) dendron ; R plural 3 (shorter) axon ; 4 many mitochondria (in cell body) ; 5 many RER/nissl’s granules, (in cell...
  4. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    i want notes for serial and simple dilution please
  5. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    i want help in understanding counter current multiplier also notes for distal convoluted tubule
  6. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    in gene theary does the vector insert gene into host genome
  7. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    thanks for all ur help i hope u continue ur success in higher studies
  8. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    i want notes for bio informatics please
  9. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    50 to 100 taste receptor cells are for 5 tastes 5types of taste receptors but 50-100 cells in each taste bud
  10. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    ok its written in text book that tongue is covered by many papillae and each papilla has many taste buds does each taste bud contain 5 different taste receptors
  11. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    if my answer exceed given lines in q will the examiner correct it my hard writing is big and dont fit space
  12. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    yes and please afasp
  13. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    thanks for help
  14. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    i want notes please for random and systematic sampling species fre and densitry and simpson index of diversity
  15. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    also its written in book that 1 if deploraisation of receptor is greater than threshold action potential will be sent and 2 if stimulation of sensory neurone is above threshold impulse will travel to brain i think if 1 occured 2 will certainly occur
  16. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    it is written in text book that glucose aminoacide pass through cotranspoter in microvilli of proximal convoluted tuble through cotransporter are chloride ions vitamine in absorbed in the same way
  17. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    also in anaerobic respiration there is lactic acid and alcoholic fermentation which one is reversible and why
  18. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    in refractory period where Na ion channels become unresponisve can a strong stimulus stimulate it to open
  19. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    u will find q in textbook saq which is very similar to past papr photosynsis
  20. mohmed ahmed soliman

    A level Biology: Post your doubts here!

    can u show address of question
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