STEM CELLS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 8

  • @AlevelBiologyHelp
    @AlevelBiologyHelp  4 роки тому +8

    00:26 = What are stem cells?
    01:22 = Totipotent stem cells
    02:35 = Pluripotent stem cells
    04:20 = Multipotent + Unipotent stem cells
    05:21 = iPS cells
    07:09 = Exam questions and mark schemes

  • @AlevelBiologyHelp
    @AlevelBiologyHelp  3 роки тому +37

    Hi everyone! It has come to my attention that my explanation for the question at 10:50 was pretty poor/incorrect! The answer is 5:1 because if you look at the table, plantlets are produced at a cytokinin concentration of 50 and an auxin concentration of 10 (plantlets are what we want because that shows papaya growth), so if you cancel that down, it gives a ratio of 5:1!! Hope this makes more sense to you all :)

  • @tiffanyj3086
    @tiffanyj3086 4 роки тому +15

    This videos are life savers thank you so much!

  • @AvaSun-yo2wy
    @AvaSun-yo2wy 2 роки тому +8

    I just discovered u and now I love u

  • @KashHoniyar-vz1bm
    @KashHoniyar-vz1bm 9 місяців тому

    Hi thank you for all your help, just wanted to ask if all your topic videos are according to the specifications needs and if watching them is enough for covering content then off to exam questions ?
    Thank you!

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  9 місяців тому +1

      Hi - yes my videos are all according to the specification so everything that you need to know!!