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

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All of the content that you need to know for the "Cell recognition and the immune system" chapter of AQA A Level Biology. The content crosses over with other exam boards too. I get straight to the facts with no waffling. Content includes: cell recognition, phagocytosis, cell-mediated response, humoral response, vaccination, monoclonal antibodies and the ELISA test.
I also go through a few exam-style questions and their mark schemes.
Images taken from:
BioNinja
Study Rocket

Опубликовано:

5 авг 2024

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Комментарии : 56

@AlevelBiologyHelp 4 года назад

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

@rubygrellier9163 Год назад

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

@betul-ev2fu 3 года назад

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 🤩

@SH-bt3rw 3 года назад

Thank you SOOO much for this video!!

@AlevelBiologyHelp 3 года назад

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 🙂

@manalbani5447 2 года назад

omg your a life saver, thanks!❤

@katietaylor2804 3 года назад

very helpful, thank you

@olusk6457 2 месяца назад

What an amazing video

@fatoumattatouray806 3 года назад

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?

@AlevelBiologyHelp 3 года назад

Sounds good to me :)

@rip_6998 2 месяца назад

did u get a star g

@django5794 3 года назад

This was really helpful thank you!

@AlevelBiologyHelp 3 года назад

You're very welcome!

@kunchaako3848 3 года назад

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

@AlevelBiologyHelp 3 года назад

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! ☺️

@DG-yw8fb 2 года назад

Helpful thank you

@Sohamsta 3 года назад

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

@AlevelBiologyHelp 3 года назад

Hi, the playlist is complete :)

@Sohamsta 3 года назад

@@AlevelBiologyHelp okay thank you!!

@Tristilax Год назад

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

@AlevelBiologyHelp Год назад

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! :)

@ollyharvey5308 2 года назад

Thanks!

@user-jg3jb8rp7g 11 месяцев назад

Thank you😊

@jenicejacob8786 3 года назад

Soooo helpful !

@AlevelBiologyHelp 3 года назад

Glad I could help i

@yuniqecrypt7818 2 года назад

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

@AlevelBiologyHelp 2 года назад

Hi, this was mentioned in the antigens section :)

@jayhoa8249 Год назад

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

@AlevelBiologyHelp Год назад

Hi, it basically means that they develop i.e. grow :)

@gaanavmanyam9214 Год назад

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

@AlevelBiologyHelp Год назад

Just what I mentioned in the video :)

@khaadi1807 2 года назад

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 2 года назад

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

@khaadi1807 2 года назад

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

@jasonsingh9698 Год назад

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

@jasonsingh9698 Год назад

@Joshwa Roy Np

@displayfail5432 2 года назад

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...

@jayhoa8249 Год назад

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

@AlevelBiologyHelp Год назад

Hi, yes I would recommend knowing that. :)

@sophie-np2cx Год назад

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

@jayhoa8249 Год назад

@haleemahaj Год назад

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

@AlevelBiologyHelp Год назад

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!!