OCR Gateway Biology B456 12 June?
Biology exam discussion - share revision tips in preparation for GCSE, A Level and other biology exams and discuss how they went afterwards.
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Re: OCR Gateway Biology B456 12 June?Thankyouu(Original post by QuantumSuicide)
Menstrual cycle: FSH, LH, oestrogen, progesterone etc.
Adrenaline makes the heart beat faster...
Pituitary gland...
Growth hormone > dwarfism, giantism
Anti-diuretic hormone.
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Same! These Are helping loads!(Original post by chelseafan)
The cgp books help imessenly. Today im just doing past papers and reading over the cgp book. What are the things likely to come up?
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Re: OCR Gateway Biology B456 12 June?Yeah i think so, all the past papers have been around 42. Trouble is im scraping A's with past papers and i really need a/a*...(Original post by KatiexZoe)
I'm doing it, is it me or are the boundaries really Low? Pretty sure it's only around 42/60 to get an a*? ...
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Re: OCR Gateway Biology B456 12 June?Lol, which question? What did you get for the percentage question? Luteinising graph? Which part of the heart was it in the diagram? What did you write for plastic bag question?(Original post by chelseafan)
Actually pretty easy for most of it. But i had no clue for the last page.Last edited by QuantumSuicide; 12-06-2012 at 13:58. -
Re: OCR Gateway Biology B456 12 June?I got 5% for the percentage one!(Original post by QuantumSuicide)
Lol, which question? What did you get for the percentage question? Luteinising graph? Which part of the heart was it in the diagram? What did you write for plastic bag question?
I wasn't at all sure about the luteinising graph thingy, I just did it like a hill, [down up down] and made it peak on day 14 but I doubt that's right!
And for the heart I put atria but I don't think that's right either!
Plastic bag: I put about less heat so less random water molecule movement and therefore less transpiration. And about less air movement so less water expelled from stomata. -
Re: OCR Gateway Biology B456 12 June?Yes, 5% is right for the trophic question. I did the same as you for the lutenising graph too which is also probably correct (google LH graph) and for the heart I put pulmonary artery. I think that's correct, it can't have been aorta. Totally messed up the plastic bag question. At first I wrote it decreases and then changed my mind. How many marks for that question?(Original post by helloyou)
I got 5% for the percentage one!
I wasn't at all sure about the luteinising graph thingy, I just did it like a hill, [down up down] and made it peak on day 14 but I doubt that's right!
And for the heart I put atria but I don't think that's right either!
Plastic bag: I put about less heat so less random water molecule movement and therefore less transpiration. And about less air movement so less water expelled from stomata.
Restriction enzyme for the last question?
15% bone risk for Barry?
Magnesium deficiency = yellow leaves?
Ladybird question?
Snake question?
Kidney & liver for the two choices from the organs?Last edited by QuantumSuicide; 12-06-2012 at 14:17. -
Re: OCR Gateway Biology B456 12 June?Luteinising graph = really slight curve, but a dramatic peak at day 14, and then a slight curve (it's hard to explain)(Original post by QuantumSuicide)
Lol, which question? What did you get for the percentage question? Luteinising graph? Which part of the heart was it in the diagram? What did you write for plastic bag question?
Percentage = 5% I think? And 15% for the 72 year old man one.
Pulmonary Artery
At first I had a little panic but I figured it out. I put it will move 3cm as there will be no air movement and the air will become humid meaning more water vapour will surround the leaves of the plant and therefore water won't be lost through osmosis. I put something about the temperature, how that will increase but the other two factors will outweigh it, or something.
What did ya'll put for the water-logged disadvantages for the plant? -
Re: OCR Gateway Biology B456 12 June?First question was 4 marks. I think it did decrease?(Original post by QuantumSuicide)
Yes, 5% is right for the trophic question. I did the same as you for the lutenising graph too which is also probably correct (google LH graph) and for the heart I put pulmonary artery. I think that's correct, it can't have been aorta. Totally messed up the plastic bag question. At first I wrote it decreases and then changed my mind. How many marks for that question?
Restriction enzyme for the last question?
15% bone risk for Barry?
Magnesium deficiency = yellow leaves?
Ladybird question?
Snake question?
Kidney & liver for the two choices from the organs?
Yes, yes and yes, can't remember, can't remember, yes. (I think) -
Re: OCR Gateway Biology B456 12 June?Removes nitrates so photosynthesis slows down.(Original post by zangorou)
Luteinising graph = really slight curve, but a dramatic peak at day 14, and then a slight curve (it's hard to explain)
Percentage = 5% I think? And 15% for the 72 year old man one.
Pulmonary Artery
At first I had a little panic but I figured it out. I put it will move 3cm as there will be no air movement and the air will become humid meaning more water vapour will surround the leaves of the plant and therefore water won't be lost through osmosis. I put something about the temperature, how that will increase but the other two factors will outweigh it, or something.
What did ya'll put for the water-logged disadvantages for the plant? -
Re: OCR Gateway Biology B456 12 June?
I think I mentioned something about nutrients, structure and god knows what else (I wrote a whole paragraph for that in the hope something would be right)
Cholera is spread by the contamination of water which has usually been contaminated by faeces.(Original post by QuantumSuicide)
What about cholera and how it is spread and about Britain?
Britain doesn't experience many cholera outbreaks as natural disasters are rare and people often have fresh water supplies. -
Re: OCR Gateway Biology B456 12 June?Wrote exactly the same thing.(Original post by zangorou)
I think I mentioned something about nutrients, structure and god knows what else (I wrote a whole paragraph for that in the hope something would be right)
Cholera is spread by the contamination of water which has usually been contaminated by faeces.
Britain doesn't experience many cholera outbreaks as natural disasters are rare and people often have fresh water supplies. -
Re: OCR Gateway Biology B456 12 June?nitrifying bacteria - nitrosomonas and nitrobacter(Original post by QuantumSuicide)
How did you join up the nitrifying bacteria?
The top two go down and the bottom two go to the top box?
nitrigen fixing bacteria - azobactor, rhizibium, clossidium(?) can't remember which two out of them were there