9700 AS BIO DIFFICULT MCQ S SOLVED VIDEO ONE

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  • Опубликовано: 4 янв 2025

Комментарии • 14

  • @hannah-graceehab8128
    @hannah-graceehab8128 Год назад +1

    thank you, you are the best

  • @HadiaFarid-d7j
    @HadiaFarid-d7j Месяц назад

    Aoa ma'am, in which video did you teach the method of finding surface area to volume ratio?

    • @docsaira
      @docsaira  Месяц назад

      @@HadiaFarid-d7j
      A level
      Cell membrane chapter

  • @joudmansour8777
    @joudmansour8777 Год назад +1

    Hi, thank you for the video, but why isn't the answer for q 21 is B , in school they taught us that cholesterol increases the fluidity

    • @docsaira
      @docsaira  Год назад

      Reducing the packing increasing the fluidity …..Read the question carefully
      Understand that is scientifically that is wrong

    • @gurlstobit
      @gurlstobit Год назад

      Cholesterol generally REDUCES the fluidity.
      In cold temperatures, the fluidity of membranes decreases, causing the phospholipid tails to come closer together but cholesterol stops them from coming too close together. So, in COLD TEMPERATURES, cholestrol increase the fluidity, but not by that much.

    • @alizakhalid472
      @alizakhalid472 Год назад

      B says reducing the packing, increasing the fluidity.
      How is this wrong

    • @gurlstobit
      @gurlstobit Год назад

      @@alizakhalid472 it can be true but we are talking about cholesterol binding with the phospholipid tails. When it binds with them, the packing increases

  • @mubii69
    @mubii69 Год назад +1

    Ah yes,last minute grind