CELL RECOGNITION + THE IMMUNE SYSTEM - AQA A LEVEL BIOLOGY + EXAM QUESTION RUN THROUGH

Поділитися
Вставка
  • Опубліковано 18 лис 2024

КОМЕНТАРІ • 58

  • @AlevelBiologyHelp
    @AlevelBiologyHelp  4 роки тому +55

    00:35 = Cell recognition and antigens
    02:50 = Phagocytosis
    05:28 = B and T cells
    06:06 = Cell-mediated response
    07:09 = Antibody structure
    08:47 = Humoral response
    12:00 = Vaccination
    13:51 = Active and passive immunity
    14:55 = Monoclonal antibodies
    16:00 = ELISA test
    18:09 = HIV structure and replication
    21:05 = How HIV causes AIDS
    22:28 = Why antibiotics are ineffective against viruses
    23:06 = Exam questions and mark schemes

  • @AlevelBiologyHelp
    @AlevelBiologyHelp  3 роки тому +26

    In cell-mediated immunity, it is helper T cells that bind to the antigen-presenting cell, but you just need to know it as "T cell" for AQA 🙂

  • @rubygrellier9163
    @rubygrellier9163 Рік тому +6

    you are actually a lifesaver!! this helped me so much, thank you!!!

  • @betul-ev2fu
    @betul-ev2fu 3 роки тому +13

    if you film these type of videos for *CAIE exam board* , believe me tons of ppl would come here and start watching your videos since our online recources for CAIE(CIE) is veryy limited 😔. anyways, still love your videos 🤩

  • @fatoumattatouray806
    @fatoumattatouray806 3 роки тому +21

    This video was so helpful, thank you so much! Do you think that watching your videos and making notes from it as well as using active recall with those notes, spaced repetition and practise questions would be enough for me to get an A* in Biology?

  • @django5794
    @django5794 4 роки тому +24

    This was really helpful thank you!

  • @Tristilax
    @Tristilax Рік тому +3

    Great video, very helpful and concise!
    Do we need to know the two main types of phagocytes for AQA (Macrophages and Neutrophils)?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  Рік тому +2

      That isn't necessary for the exams, but when you come to do the synoptic essay in A2, you could mention those as it would count as extra reading so you'll get higher marks! :)

  • @Kat.lmr15
    @Kat.lmr15 25 днів тому

    This was SO HELPFUL THANK YOUU

  • @kunchaako3848
    @kunchaako3848 3 роки тому +9

    do you think just revising and taking notes from this and doing exam questions is enough revision? Love your videos thank you

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  3 роки тому +8

      Sounds good to me! Make sure that you do plenty of active recall with your notes though! You could make flashcards, with a question on one side (e.g. what is the structure of cellulose) and the answer on the other side! Do as many exam questions as you can too! ☺️

  • @jayhoa8249
    @jayhoa8249 Рік тому +1

    Hi miss do you need to know the fact that antibiotics target the bacterial ribosomes and enzymes?

  • @aneesakahn7728
    @aneesakahn7728 3 роки тому +4

    Whats the difference between self and non self?
    Great video

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  3 роки тому +2

      Self is just another word for your body's own cells, and non-self is another word for foreign substances ☺️

    • @aneesakahn7728
      @aneesakahn7728 3 роки тому +1

      @@AlevelBiologyHelp are all foreign substances bad for the body?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  3 роки тому +2

      @@aneesakahn7728 Yes, if the body recognises it as foreign, which would initiate an immune response ☺️

  • @SH-bt3rw
    @SH-bt3rw 3 роки тому +1

    Thank you SOOO much for this video!!

  • @manalbani5447
    @manalbani5447 2 роки тому +1

    omg your a life saver, thanks!❤

  • @Sohamsta
    @Sohamsta 3 роки тому +3

    Hi is your cells playlist completed fully or will you add more videos or is the content for cells covered entirely already?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  3 роки тому +1

      Hi, the playlist is complete :)

    • @Sohamsta
      @Sohamsta 3 роки тому

      @@AlevelBiologyHelp okay thank you!!

  • @jayhoa8249
    @jayhoa8249 Рік тому +1

    Hey miss what does like mature mean like when B cells mature in the bone marrow , thanks

  • @olusk6457
    @olusk6457 5 місяців тому

    What an amazing video

  • @displayfail5432
    @displayfail5432 3 роки тому

    i just saw this video for my paper 3 tmr, and when i saw the whooping qn i realise it came out for my paper 2 exactly...

  • @katietaylor2804
    @katietaylor2804 4 роки тому +3

    very helpful, thank you

  • @dipure9972
    @dipure9972 3 роки тому +3

    Hello this is very helpful when can you finish the whole of A level biology please ?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  3 роки тому +3

      Hi, I have already uploaded every topic for A Level Biology:)

  • @gaanavmanyam9214
    @gaanavmanyam9214 Рік тому

    For AQA, do we need to know about both direct and indirect ELISA?

  • @haleemahaj
    @haleemahaj Рік тому

    How many hours a week of revision should we be doing at this point please ? As a year 13

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  Рік тому +1

      Hi - it honestly differs for each person (might make a video on this?). I would recommended 2 hours outside of lessons on weekdays and about 5-6 on weekends. If you have extracurricular activities, then please keep them up as they are so important for your wellbeing and sanity!!

  • @DG-yw8fb
    @DG-yw8fb 2 роки тому +1

    Helpful thank you

  • @khaadi1807
    @khaadi1807 2 роки тому

    Hi, thank you very much for the video! Do we need to know that the receptors are CD4 receptors or can we just say receptor proteins on the cell surface of T helper cells?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  2 роки тому +1

      The specification doesn't mention CD4 specifically but if I were you, I would remember it to guarantee marks :)

    • @khaadi1807
      @khaadi1807 2 роки тому

      @@AlevelBiologyHelp Thank you!!!!!!!

    • @jasonsingh9698
      @jasonsingh9698 Рік тому

      @Joshwa Roy Name of receptors on t-helper cells. HIV binds to these receptors in order to invade and undergo replication

    • @jasonsingh9698
      @jasonsingh9698 Рік тому

      @Joshwa Roy Np

  • @sophie-np2cx
    @sophie-np2cx Рік тому

    isn't clonal selection when the antibodies attach to the antigen?

  • @yuniqecrypt7818
    @yuniqecrypt7818 2 роки тому

    Im not sure if i missed but was antigenic variation mentioned?

  • @SofiyaPretty
    @SofiyaPretty 8 місяців тому

    lam getting interested and want to know more.
    9:30pm

  • @SonikaStudy
    @SonikaStudy Рік тому

    Thank you😊

  • @MohammedHussain-ss6kj
    @MohammedHussain-ss6kj 2 роки тому

    is this vid for AS or A level

  • @ollyharvey5308
    @ollyharvey5308 2 роки тому

    Thanks!

  • @jenicejacob8786
    @jenicejacob8786 3 роки тому

    Soooo helpful !

  • @mattharris1930
    @mattharris1930 3 роки тому +13

    its pronounced fay-go-site

    • @AlevelBiologyHelp
      @AlevelBiologyHelp  3 роки тому +16

      Haha I tend to interchange between both pronunciations 😁

    • @ij9349
      @ij9349 Місяць тому

      Shut up