OCR Biology F212 Revision [3rd June 2013] (Now Closed)

Remember domain.. then King Prawn Curry Or Fat Greasy Sausages!!!!!!!! Lol

Posted from TSR Mobile

Can someone explain to me about the Three Domains and what we need to know about it ?

Specific heat capacity is the amount of energy needed to raise the temperature by 1 degree. So Water has a high specific heat capacity, meaning it needs a lot of energy to change it's temperature. Therefore the temperature remains mostly stable, ensuring optimum conditions for enzyme and other metabolic activities.

Latent heat of vaporization is to do with the evaporation of water, you can remember it more easily by thinking of it as Latent heat of 'evaporation'. Water uses up a lot of energy, or absorbs, a lot of energy when it is evaporated. Therefore humans sweat a lot, due to it being an efficient cooling mechanism. Evaporation takes up a lot of energy, so it removes a lot of heat from the surface.

Both of these characteristics of Water molecules rise primarily from Hydrogen bonding. Hydrogen bonding is 'weak', but there are lots of hydrogen bonds, which is crucial.

Hope this helped

Do we need to know dietary reference values? The graph for it etc?

The 3 domains are eukaryotes, archaea and bacteria


In the classification system scientists grouped the eukaryotes and the archaea together while the bacteria was separated from those 2 groups because they are different.


The classification was based on the ribosomal RNA,
It showed that the archea and eukaryotes were similar in terms of their internal function and processes that take place such that, there are proteins that are bound to their genentic material, use similar (Same) enzyme RNA polymerase and have similar mechnaism for the DNA replication.


The bacteria has no proteins bound to their genetic material, different flagella structure, different internal structure and uses different enzyme and undergoes different DNA replication.


Does this answer your question ?

Anyone thought of any good ways to revise in the last week? I've made mind maps, gone through the specification and done past papers averaging 69%.... Also have a CPG revision book... Not sure what to do now really.

Hi could someone please help me by summing up the information on pages 170-171? I just can't seem to get my head around it all and I'm just stressing out because I don't know it


Posted from TSR Mobile

Could anybody tell me how much detail we need to know about protein synthesis? (In relation to DNA and RNA)

On the specification is says 'must be considered in outline only'


Posted from TSR Mobile

Could anybody tell me how much detail we need to know about protein synthesis? (In relation to DNA and RNA)

On the specification is says 'must be considered in outline only'


Posted from TSR Mobile

Guys I need mnemonic to remember the way organisms(living) are classified - taxonomy.

King Peter Can't Overlook Fat Gordon's Socks

That was in the last paper, explaining three roles of RNA. Would be surprised if they touched on it.

All you need to know is the pathway through the cell the protein takes, and the different stages. So mRNA to ribosomes, through rough ER, and then through Golgi apparatus. Then exocytosed


Posted from TSR Mobile