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Original post by trrr
Go on page 1 of the OCR textbook.


I don't have the textbook :frown:


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Reply 241
Biodiversity what does it mean?
Original post by rival_
Biodiversity what does it mean?


The variety of life in a habitat / habitats!


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Reply 243
Original post by lauren1brown
The variety of life in a habitat / habitats!


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Alright thanks btw (to save you time in exams or in the future ) "habitat/s" is also correct punctuation :wink:
How is revision for the exam next week going guys? What have you gone over so far?
Original post by lauren1brown
I don't have the textbook :frown:


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Question 2 b)ii) in the january 2013 paper is basically all you need to know about protein synthesis, and knowing the roles of each form of RNA would also help :smile:
Reply 246
Can someone outline the differences between natural selection, evolution and adaptation? I really don't understand the difference. I don't think that evolution is a difficult concept to get your head around, but I think they add loads of pointless crap that has no practical use.
Also, could someone explain the key bits about conservation in/ex situ and international cooperation?
Hi, where can I find the January 2013 paper and mark scheme please?


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Original post by _JC95
well under the new spec i think the highest it has been out of 100 for full 150 ums is 86, so really you more than likely got full ums there


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How did you know this? And is there anywhere that shows how many raw marks you need for 100%, 90% etc ums, on the ocr website they only show each grade :/


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Original post by Liamnut
Can someone outline the differences between natural selection, evolution and adaptation? I really don't understand the difference. I don't think that evolution is a difficult concept to get your head around, but I think they add loads of pointless crap that has no practical use.
Also, could someone explain the key bits about conservation in/ex situ and international cooperation?


Natural selection is the driving force behind evolution, think of it as the survival of the fittest argument! Only well-adapted creatures will survive, therefore, those genes will be passed on to the next generations (assuming they reproduce successfully), as a result, evolution occurs.

Adaptations are just features, which species hold allowing them to adapt to their environments - fish have gills to breathe underwater.
Reply 250
Original post by otrivine
I dont have the book , which topic is that :smile:


Communication between cells :-) 2.2 number 10


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Original post by rival_
Alright thanks btw (to save you time in exams or in the future ) "habitat/s" is also correct punctuation :wink:


Thanks :smile:


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Original post by mtaki14
Question 2 b)ii) in the january 2013 paper is basically all you need to know about protein synthesis, and knowing the roles of each form of RNA would also help :smile:


Great, thank you :smile:


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After going through some past papers I feel like crying

Chemistry >>>>>Biology
Reply 254
Original post by rival_
It's not ridiculous enough :frown: I think the Domain King Curry Prawns Or Greasy Sausages might have done it haha. Thanks anyways.


How about
Donkey Kong Penis Curry Or Fat Greasy Sausages

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Can somebody explain the differences between 5 kingdoms and 3 domains please:smile:
Original post by Adil96m
How about
Donkey Kong Penis Curry Or Fat Greasy Sausages

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Katy Perry Came Over For Good Sex never fails me!


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Could someone tell me about tRNA? Not in the guide I have and don't have the textbook :frown:


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Reply 258
Original post by yasmin.mahfouz
Could someone tell me about tRNA? Not in the guide I have and don't have the textbook :frown:


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tRNA transfers the amino acids to the ribosomes in order to assemble different polypeptides
Reply 259
I don't actually understand what the word transcription means. Is that a synonym for protein synthesis or a specific part of the process?

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