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lcj0503
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#3681
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#3681
how many essays have people done in preparation? or are essay plans better to do, anyone else thinking the lack of nervous system in 2012 paper will mean more in tomorrows? oestrous cycle always seems to come up as well. I am so nervous for tomorrow!!
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rm.xo
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#3682
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#3682
(Original post by YWArtist)
Ads and disads of in vivo vitro?
pg 225 NT textbook
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JessicaTSR
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#3683
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#3683
(Original post by rubix1)
Examples of use of active transport?
If this is for the essay, a good unit 1 example is the active transport of sodium into the blood from the epithelial cells, this creates a conc gradient for the co-transport of glucose with sodium from the lumen of the small intestines into the epithelial cells where it can diffuse out into the blood by facilitated diffusion
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rubix1
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#3684
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#3684
(Original post by YWArtist)
Ads and disads of in vivo vitro?
In vivo (bacteria) - accurate, little chance of contamination
In vitro (PCR) - rapid, no cultural techniques due to use of living organisms.
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tilownii
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#3685
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#3685
Guys I need c in this unit as I need ABB for pharmacy I'm afraid I might end up with ABC cos I might scre up in biol5 any idea how to do good in this unit thx
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Ryan_m_10
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#3686
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#3686
Essay on Diffusion, I'd talk about:

Gas exchange in fish
Movement of IAA in plant shoots
Local chemical mediators
Gas exchange in lungs

Anyone else got any other things you'd include if given this question?
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rubix1
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#3687
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#3687
(Original post by pjanoo)
Definitely don't blag anything because they'll see right through it!! Be sharp and concise, don't waffle or it'll be obvious
So if i can only get 2/3 relevant points its better i use them, than 'making up' a extra point?
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rubix1
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#3688
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#3688
(Original post by Ryan_m_10)
Essay on Diffusion, I'd talk about:

Gas exchange in fish
Movement of IAA in plant shoots
Local chemical mediators
Gas exchange in lungs

Anyone else got any other things you'd include if given this question?
Acetylcholine across the synapse
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pjanoo
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#3689
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#3689
(Original post by rubix1)
So if i can only get 2/3 relevant points its better i use them, than 'making up' a extra point?
I personally wouldn't because you never know how grumpy your examiner will be haha, there's always the possibility that you'd get away with it but more often than not they'd see right through it and it won't do you any good
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Chewy29
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#3690
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#3690
(Original post by tilownii)
Guys I need c in this unit as I need ABB for pharmacy I'm afraid I might end up with ABC cos I might scre up in biol5 any idea how to do good in this unit thx
Realistically to get a C you only need about 55 marks which you can get just from the questions as long as you know all the unit 5 content. I wouldn't worry too much as the grade boundaries are generally low but if I were you I would make sure my unit 5 knowledge was up to scratch before concentrating on synoptic stuff and how to tackle the essay.

Posted from TSR Mobile
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rubix1
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#3691
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#3691
Anyone want a copy of the exam paper?....














Heres how to get it...






















1 easy step...

















Email me at [email protected]

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Blob2491
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#3692
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#3692
Do you think we'll be asked to draw a restriction map?
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MLogan
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#3693
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#3693
Is it me or was the June 12 paper the perfect paper anyone could get? Essays were actually good and the questions were relatively better than previous papers :| Oh how i wish i was a year older!!!
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master y
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#3694
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#3694
(Original post by rubix1)
Anyone want a copy of the exam paper?....














Heres how to get it...






















1 easy step...

















Email me at [email protected]

cool story bro
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Nessie133
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#3695
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#3695
(Original post by rubix1)
Anyone got any specific/generic examples for the use of enzymes (for the essay)?

THANKS
chemical digestion- e.g. starch digestion
hydrolysis of ATP
synaptic transmission- acetyl cholinesterase
phagocytosis- lytic enzymes released
DNA technology- restriction endonucleases/reverse transcriptase/DNA ligase
DNA replication- DNA helicase and DNA polymerase
protein synthesis- DNA helicase, RNA polymerase

Hope this helps
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F1's Finest
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#3696
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#3696
The Wolves question on the June 10 paper is pissing me off.
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stoppy123
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#3697
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#3697
(Original post by Ryan_m_10)
Essay on Diffusion, I'd talk about:

Gas exchange in fish
Movement of IAA in plant shoots
Local chemical mediators
Gas exchange in lungs

Anyone else got any other things you'd include if given this question?
Water potential
Different types
Define it
Gas exchange everywah
Synapses
Apoplast and Symplast pathways.
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Fergy94
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#3698
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#3698
I'm so screwed for this paper tomorrow :L
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Nessie133
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#3699
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#3699
(Original post by Ryan_m_10)
Essay on Diffusion, I'd talk about:

Gas exchange in fish
Movement of IAA in plant shoots
Local chemical mediators
Gas exchange in lungs

Anyone else got any other things you'd include if given this question?
Chemiosmosis in aerobic respiration- diffusion of protons from intermembrane space to matrix and formation of ATP.
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Tikara
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#3700
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#3700
Past Essay titles:

Spoiler:
Show

From Past Spec

The functions of nucleic acids.

The factors which influence the concentration of glucose in the blood.

Relationships between animals and plants

How the structure of cell organelles is related to their functions

The process of diffusion and its importance in living organisms.

Maintaining constant conditions in the body.

The many causes of human disease.

The different ways in which living organisms obtain their nutrients.

The factors which determine an organism’s phenotype.

The different ways in which organisms use ATP

How the structure of cells is related to their function

How bacteria affect human lives

The biological importance of water

The structure and functions of carbohydrates

Cycles in biology

How carbon dioxide gets from a respiring cell to the lumen of an alveolus in the lungs.

The transfer of energy between different organisms and between these organisms and their environment

Ways in which different species of organisms differ from each other

Negative feedback and its importance in biology.

Condensation and hydrolysis and their importance in biology.

Inorganic ions include those of sodium, phosphorus and hydrogen.
Describe how these and other inorganic ions are used in living organisms.

Bacteria affect the lives of humans and other organisms in many ways.
Apart from causing disease, describe how bacteria may affect the lives of humans and other organisms.

Polymers have different structures. They also have different functions. Describe how the structures of different polymers are related to their functions.

Heat and many different substances are transferred within the body and between the body and the environment. Explain how surface area is linked to this transfer.

The different ways in which organisms use ATP.

How the structure of cells is related to their function.

The biological importance of water.

The movement of substances within living organisms.

The structure and functions of carbohydrates

Cycles in biology

How the structure of proteins is related to their functions

The causes of variation and its biological importance

The process of osmosis and its importance to living organisms.

Energy transfers which take place inside living organisms.

Enzymes and their importance in plants and animals

Negative feedback in living organisms

Mean temperatures are rising in many parts of the world. The rising temperatures may result in physiological and ecological effects on living organisms. Describe and explain these effects.

Cells are easy to distinguish by their shape. How are the shapes of cells related to their function?

Mean temperatures are rising in many parts of the world. The rising temperatures may result in physiological and ecological effects on living organisms. Describe and explain these effects.

The causes of variation and its biological importance.

From Current Spec

Mean temperatures are rising in many parts of the world. The rising temperatures may
result in physiological and ecological effects on living organisms. Describe and explain
these effects.

The causes of variation and its biological importance.

Carbon dioxide may affect organisms directly or indirectly. Describe and explain these
effects.

The causes of disease in humans.

Using DNA in science and technology

A cycle is a biological pathway or process in which the end product of one cycle
becomes the starting point for the next cycle. Write an essay about cycles in biology.

The importance of shapes fitting together in cells and organisms.

How bacteria can affect the lives of humans and other organisms.

Essay guidance essay examples from AQA website
• The different ways in which organisms use ATP

• How the structure of cells is related to their function

• The structure and functions of carbohydrates

• How bacteria affect human lives

• The biological importance of water

• The ways in which different species of organisms differ from each other

• Describe how the structures of different polymers are related to their
functions.

• Why offspring produced by the same parents are different in appearance.

• The importance of hydrogen bonds in living organisms


These are all the essay titles from exam pro, thankfully we get to choose between two in the exam. One is usually broader than the other.
You can see that some crop up more than others and some look much harder than others- but in the end there are many many things they can ask you about.

also, omg I'd love an essay on enzymes and their importance :P
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