Does anyone have b1 b2 b3 ocr 21st century exam tomorrow? Watch

DDan123
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#81
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Oh for the fetal cells question, I put that one advantage of extracting it directly was that scientists can collect a larger sample of fetal cells to test from? And What did everyone write about that section about pulse rates and the heart??


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Pandorax
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#82
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I'm just reading and learning my revision guide, it's like 6 pages for each topic so it's easier to learn (for chemistry)
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Pandorax
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(Original post by DDan123)
Oh for the fetal cells question, I put that one advantage of extracting it directly was that scientists can collect a larger sample of fetal cells to test from? And What did everyone write about that section about pulse rates and the heart??


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i wasn't really sure about that section, for the first part I said measuring pulse on wrist, and then for the maths one and finding the name, I got that wrong because I forgot to recheck it, it's only 2marks so xP And then I wasn't sure on the last part, I said other factors needed to be taken into account, for example age, fitness levels vary depending on the age and so does the heart rate etc. not sure if that's right though
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SSJ97
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(Original post by Pandorax)
i wasn't really sure about that section, for the first part I said measuring pulse on wrist, and then for the maths one and finding the name, I got that wrong because I forgot to recheck it, it's only 2marks so xP And then I wasn't sure on the last part, I said other factors needed to be taken into account, for example age, fitness levels vary depending on the age and so does the heart rate etc. not sure if that's right though
i put exactly those as well. I found the 6 mark antibiotic area thing annoying i think i messed that
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Pandorax
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(Original post by SSJ97)
i put exactly those as well. I found the 6 mark antibiotic area thing annoying i think i messed that
Same, I screwed up that one, hopefully I might get one mark or two, but If I'm lucky. xD Everyone screwed up that question I think, or found it difficult
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ToLiveInADream
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(Original post by Pandorax)
Same, I screwed up that one, hopefully I might get one mark or two, but If I'm lucky. xD Everyone screwed up that question I think, or found it difficult
It was a good question if you broke it down tbh. All it was about was comparing strength of the antibiotics because of the diameter. The one with the same as the water may have not worked because the bacteria was resistant or it was simply crap lol.

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Pandorax
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(Original post by ToLiveInADream)
It was a good question if you broke it down tbh. All it was about was comparing strength of the antibiotics because of the diameter. The one with the same as the water may have not worked because the bacteria was resistant or it was simply crap lol.

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Yeah, but It was quite early on in the paper so I figured it wouldn't matter too much and I will just continue on in the paper,xD Plus, conclusions and things such as that in tests are one of my weakness, I keep forgetting to revise on how to answer them xp
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DDan123
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(Original post by Basim97)
The antibiotic question was rather easy the greater the area of the clear circle the more effective the antibiotic. C had stayed the same as water so the antibiotic was not effective at all. B was the most effective.
Woops lol I didn't explicitly mention the area of the clear circle. All i wrote about was the order of the the effectiveness of the antibiotics. I think i suggested that C was the least effective because perhaps most of the bacteria were resistant to the antibiotic.
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BarneyMartin
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Is there a thread about today's Chemistry?
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It's-Ruby
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(Original post by BarneyMartin)
Is there a thread about today's Chemistry?
Yeh it's called like OCR 21st century science CPB1-7
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BarneyMartin
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(Original post by It's-Ruby)
Yeh it's called like OCR 21st century science CPB1-7
Thanks! Can you post a link please?
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Kitty260
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http://www.thestudentroom.co.uk/show...0c2%20c3%20ocr
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romaiseb
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(Original post by BarneyMartin)
Thanks! Can you post a link please?
http://www.thestudentroom.co.uk/show...light=ocr+chem - Here it is
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jemilicious98
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(Original post by monisj1)
Is it just me that liked the antibiotic question?
Omds I loved it toooo

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monisj1
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(Original post by jemilicious98)
Omds I loved it toooo

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thank god! i was scared that i might have done it wrong since everyone was confused
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Mari1
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#96
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Does anyone have this pper i.e. June 2014 really want to go through it!
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