F216 - OCR Biology Coursework

Exactly that

Exactly that

Thank you! Is this a required calculation for the quantitative (leaf variation in terrestrial plants) or am I reading too far into this?

Last question: what would be the units of leaf density. Number of spiked doesn't have a unit so it just cm^-1 ??

Yes, but mm^-1 is the better alternative (and the one they ask you to measure in)


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My teacher told me to revise chi squared. I do this in maths so I know how to do it in general but I'm not sure how I could do this for spine density/spine number in leaves? What would be the expected number? Am I given this or do I calculate it by (row total* column total ) / grand total ?

The last one. Honestly don't worry! They guide you through that calculation like you're stupid


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Fantastic!! Thanks for the help and quick replied. I'm just kinda stressed. I have 3 in one day on Tuesday.

I've done the quantitative and evaluative for yeast/NaCl. I also did my qualitative but for some reason I can't remember what it was about. If someone knows what all three possible qualitative tasks are, it'll probably jog my memory.

How do you calculate spine density of a leaf? Number of spines / length of leaf??

Or do I have to calculate approximate area or circumference of the leaf?

Hi I'm doing the qualitative on kidneys next week and thats literally all we've been told about it...I'd appreciate any help you can give me on what do and what it consists of. Thanks

Same here.

Yeah its no of spines/ leaf length, i did it today and it tells you how to work out the spine density in the booklet thats given to you

hey guys, I am afraid I cant help with the kidney task. I am yet to do my first one!

is anyone able to give me any info on the 'investigating leaf variation' - i have it on Tuesday and have no idea what to expect

Thanks

I can't say too much as we are not allowed to discuss specifics.
This one is very easy, the worst that could happen is that you prick yourself on the leaves (Happened to me so many times). Most of it is just numbers and calculations.
I would revise abiotic and biotic factors and learn how to draw a table.

You'll be fine.

Hi I'm doing the qualitative on kidneys next week and thats literally all we've been told about it...I'd appreciate any help you can give me on what do and what it consists of. Thanks

Thank you so much for the advise - maybe I'll wear gloves. I am new to this site and have now realised how it works in terms of being able to offer general advise but not specifics!

have you covered osmosis in red blood cells and/or ion concentration with model plant cells?

Thank you - you've put my mind at rest!

Does anyone know anything about the yeast eval? I need an a* and really need help as we've not been through it in class! Thanks!