tanisha04
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Who's sitting the OCR biology paper tomorrow afternoon? How prepared do you feel and what questions do you think are likely to come up?
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XxxvatxxX
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Are you doing OCR A?? I'm doing B and that's next week
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zana54
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Sooooo unprepareddd!!! Buttt, i am sure itll be fineeeee, i mean its b1 b2 b3, and it cant be tht hard...compared to some of the others right? Buttt, i think that...
- evolution
- genetic tree diagrams
- phagocytosis
- herd immunity
- artificial cloning
- effectiveness/side effects of long term drugs
- interdependence and food chains
this is all based on the last year examiners report for ocr twenty frist century science, b1b2b3, and other forums, but i hope yall pass, and get the grades you want. Praying for all yr 11s rnnnn! Xxx
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XxxvatxxX
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(Original post by zkhan54)
Sooooo unprepareddd!!! Buttt, i am sure itll be fineeeee, i mean its b1 b2 b3, and it cant be tht hard...compared to some of the others right? Buttt, i think that...
- evolution
- genetic tree diagrams
- phagocytosis
- herd immunity
- artificial cloning
- effectiveness/side effects of long term drugs
- interdependence and food chains
this is all based on the last year examiners report for ocr twenty frist century science, b1b2b3, and other forums, but i hope yall pass, and get the grades you want. Praying for all yr 11s rnnnn! Xxx

Wait what do you mean based on the last examiners report?? Do they slightly hint at what may be asked the following year?
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zana54
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Every year, the exam board write an examiners report and go through each question on the ppaer that was set that year, so the examiners report tells you what questions were answerd badly as a whole on that paper by the whole country, and i looked at that, and picked out what was answered badly and thought they might come up this year if they werent answered too well rpeviosuly. However i cant be too sure because obviously ocr is ocr, and i dont like them! And they dont like me! So theyre weird are exam boards, they just hate kids tbh...buttttt, anything could come up, im going baed on what was answered not too well last year, although anything could happen. X
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tanisha04
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(Original post by zkhan54)
Sooooo unprepareddd!!! Buttt, i am sure itll be fineeeee, i mean its b1 b2 b3, and it cant be tht hard...compared to some of the others right? Buttt, i think that...
- evolution
- genetic tree diagrams
- phagocytosisr
- herd immunity
- artificial cloning
- effectiveness/side effects of long term drugs
- interdependence and food chains
this is all based on the last year examiners report for ocr twenty frist century science, b1b2b3, and other forums, but i hope yall pass, and get the grades you want. Praying for all yr 11s rnnnn! Xxx
what on earth is phagocytosisr pls
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tanisha04
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(Original post by zkhan54)
Sooooo unprepareddd!!! Buttt, i am sure itll be fineeeee, i mean its b1 b2 b3, and it cant be tht hard...compared to some of the others right? Buttt, i think that...
- evolution
- genetic tree diagrams
- phagocytosis
- herd immunity
- artificial cloning
- effectiveness/side effects of long term drugs
- interdependence and food chains
this is all based on the last year examiners report for ocr twenty frist century science, b1b2b3, and other forums, but i hope yall pass, and get the grades you want. Praying for all yr 11s rnnnn! Xxx
and herd immunity what's that? omg i'm panicking
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tanisha04
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(Original post by XxxvatxxX)
Are you doing OCR A?? I'm doing B and that's next week
OCR 21C
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XxxvatxxX
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(Original post by tanisha04)
OCR 21C
Ahh ok, I'm doing Gateway
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suckass
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white blood cells that engulf and digest microbes- phagocytosis
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zana54
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(Original post by tanisha04)
and herd immunity what's that? omg i'm panicking
AWWW, DONT PANIC. ILL HELP YAS. SO...

PHAGOCYTOSIS IS JUST ANOTHER FANCY WORD FOR THE WHOLE PROCESS OF THE WBC DETECTING FOREIGN BODIES, AND ENGULFING, THEN DIGESTING THEM, THEYRE NON SPECIFIC SO THEY ATTACK ANYThING THATS NOT MEANT TO BE THER, AND THEN THERES SPECIFIC WBC, WHICH HAVE RECEPTORS CALLED ANTIGENS(TRIGGER IMMUNE RESPONSES). THE WBC PRODUCE THE ANTIBODIES, AND THEY USE THE LOCK AND KEY MECHANISM TO LATCH ONTO INVADING MICRO ORGANISMS, AND THEN MEMORY CELLS ARE PRODUCED SO THAT NEXT TIME THE ANTIGEN ENTERS THE BODY, ANTIBODIES REPRODUCE VERY QUICKLY- IMMUNITY.

HERD IMMUNITY IS BASICALLY VACCINATING A LARGE PERCENTAGE OF THE POPULATION TO PREVENT EPIDEMICS.

SEE? NO BIGGIE! YOULL BE FINE FOR TOMORROW, DONT YOU WORRY. X
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TheMightyBadger
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(Original post by tanisha04)
and herd immunity what's that? omg i'm panicking
Phagocytosis is one of the processes that white blood cells, more specifically phagocytes can carry out in the immune system. This is where white blood cells engulf the microorganism and digest it by excreting enzymes onto it. This is one of the ways that people's immune systems defend them from infections.

Herd immunity is where a very large proportion of a population has been vaccinated against a certain disease. This means that because so many people would have become immune to it (due to being infect with a dead or weakened strain of said microorganism), it would be very hard for the disease to spread because there would be fewer people that could catch it. This can hep to prevent epidemics because the disease will spread more slowly and it will help to contain it and control how much it spreads, as there will be fewer people to treat.

I hope this makes sense. Epidemics are big outbreaks of a disease.
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tanisha04
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(Original post by zkhan54)
AWWW, DONT PANIC. ILL HELP YAS. SO...

PHAGOCYTOSIS IS JUST ANOTHER FANCY WORD FOR THE WHOLE PROCESS OF THE WBC DETECTING FOREIGN BODIES, AND ENGULFING, THEN DIGESTING THEM, THEYRE NON SPECIFIC SO THEY ATTACK ANYThING THATS NOT MEANT TO BE THER, AND THEN THERES SPECIFIC WBC, WHICH HAVE RECEPTORS CALLED ANTIGENS(TRIGGER IMMUNE RESPONSES). THE WBC PRODUCE THE ANTIBODIES, AND THEY USE THE LOCK AND KEY MECHANISM TO LATCH ONTO INVADING MICRO ORGANISMS, AND THEN MEMORY CELLS ARE PRODUCED SO THAT NEXT TIME THE ANTIGEN ENTERS THE BODY, ANTIBODIES REPRODUCE VERY QUICKLY- IMMUNITY.

HERD IMMUNITY IS BASICALLY VACCINATING A LARGE PERCENTAGE OF THE POPULATION TO PREVENT EPIDEMICS.

SEE? NO BIGGIE! YOULL BE FINE FOR TOMORROW, DONT YOU WORRY. X

Omg thank you so much! Did you know this from the top of your head or did you use a textbook. YOU explained it SO WELL.
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tanisha04
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(Original post by zkhan54)
Sooooo unprepareddd!!! Buttt, i am sure itll be fineeeee, i mean its b1 b2 b3, and it cant be tht hard...compared to some of the others right? Buttt, i think that...
- evolution
- genetic tree diagrams
- phagocytosis
- herd immunity
- artificial cloning
- effectiveness/side effects of long term drugs
- interdependence and food chains
this is all based on the last year examiners report for ocr twenty frist century science, b1b2b3, and other forums, but i hope yall pass, and get the grades you want. Praying for all yr 11s rnnnn! Xxx
Evolution is like natural selection and selective breeding right?
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zana54
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(Original post by tanisha04)
omg thank you so much! Did you know this from the top of your head or did you use a textbook. You explained it so well.
thank you. X. And no, i just kinda said whatever came in my mind tbh, although dw, i know its correct, i mean b1 is literally the only confident topic i know, so dw about there being mistakes, cos trust me there are none! Good luck for tomorrow btw.
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zana54
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(Original post by tanisha04)
evolution is like natural selection and selective breeding right?
yeah, thts right! Seeeeee, youre fineeee.
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adam.00
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I'm so stressed for tomorrow. I don't know what to revise
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zana54
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(Original post by adam.00)
I'm so stressed for tomorrow. I don't know what to revise
im not even stressed, just like really really worried about what the future could potentially hold!,,,is that another form of stress? hahaha, idkkkkk
HELP ON B3 ANYBODY? XXX
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tanisha04
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(Original post by zkhan54)
im not even stressed, just like really really worried about what the future could potentially hold!,,,is that another form of stress? hahaha, idkkkkk
HELP ON B3 ANYBODY? XXX
omg please PM me and we can revise together
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MasterShub
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b123 is like the easiest of all sciences so good luck everyone, although knowing OCR, they'll make it the hardest they can because it is the last time for this spec
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