awesometmartin
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1) Name one other way trees may lead to global warming - I said about the 'locked up' carbon and how it's released into the atmosphere
2)Left ventricle
3)Pulmonary vein
4)What's the use of valves - To prevent backflow of blood
I don't remember the rest but leave your answers
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Gggg121
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What did you get for the blood cell question? I got that the body cells would shrink and lose water when the concentrated sports drink was drank as water moved out of the cell by osmosis !

(Original post by awesometmartin)
1) Name one other way trees may lead to global warming - I said about the 'locked up' carbon and how it's released into the atmosphere
2)Left ventricle
3)Pulmonary vein
4)What's the use of valves - To prevent backflow of blood
I don't remember the rest but leave your answers
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Pratikattwal
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(Original post by Gggg121)
What did you get for the blood cell question? I got that the body cells would shrink and lose water when the concentrated sports drink was drank as water moved out of the cell by osmosis !
I wrote they would become inefficient due to swelling
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awesometmartin
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(Original post by Gggg121)
What did you get for the blood cell question? I got that the body cells would shrink and lose water when the concentrated sports drink was drank as water moved out of the cell by osmosis !
Oh no, I said the blood cells would burst would that count??
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haseebj49
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I wrote that : because of diffusion, the concentration would increase in the cell. I was confused because they didn't mention the concentration of what so I didn't include anything about osmosis 😑

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allude741
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(Original post by awesometmartin)
Oh no, I said the blood cells would burst would that count??
I don't think so because water would move out of the cell. Not into the cell.
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Ifailedagain
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I put that water moves out of cell by osmosis due to higher concentration in cell compared to drink
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Nudeshot
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(Original post by awesometmartin)
1) Name one other way trees may lead to global warming - I said about the 'locked up' carbon and how it's released into the atmosphere
2)Left ventricle
3)Pulmonary vein
4)What's the use of valves - To prevent backflow of blood
I don't remember the rest but leave your answers
It was aorta not pulmonary vein
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Domsebhill
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(Original post by awesometmartin)
1) Name one other way trees may lead to global warming - I said about the 'locked up' carbon and how it's released into the atmosphere
2)Left ventricle
3)Pulmonary vein
4)What's the use of valves - To prevent backflow of blood
I don't remember the rest but leave your answers
pretty sure its the aorta??
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MMJ007
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(Original post by Ifailedagain)
I put that water moves out of cell by osmosis due to higher concentration in cell compared to drink
Yeah but the cell had a conc of 280 and the drink was 480
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eur0visi0n
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(Original post by awesometmartin)
1) Name one other way trees may lead to global warming - I said about the 'locked up' carbon and how it's released into the atmosphere
2)Left ventricle
3)Pulmonary vein
4)What's the use of valves - To prevent backflow of blood
I don't remember the rest but leave your answers
Hmm... for 1) I put machinery to remove the trees and for 3) I put aorta..
Nervous now!! I found B2 a breeze compared to B3 which is terrifiying but I suppose the exam board makes B3 harder on purpose..
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awesometmartin
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(Original post by Nudeshot)
It was aorta not pulmonary vein
It showed the one going in in the left atrium
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Domsebhill
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(Original post by awesometmartin)
It showed the one going in in the left atrium
nah man it was the one going out
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MoTheCucumber
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(Original post by MMJ007)
Yeah but the cell had a conc of 280 and the drink was 480
I'm not sure of the truth in this, but I wrote:

Due to the sports drink having a higher concentration than the red blood cells, the sports drink particles moved through the red blood cell's partially permeable membrane and into the cell by osmosis (going along the concentration gradient). This caused the red blood cell to swell and expand, as it gains the sports drink particles, to the point of potential bursting.

I can't make sense of this, becuause the diagrams seem to contradict the explaination: http://www.bbc.co.uk/education/guide...gk7/revision/5
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Stevie patten
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(Original post by Domsebhill)
pretty sure its the aorta??
defo was Aorta
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Stevie patten
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(Original post by MMJ007)
Yeah but the cell had a conc of 280 and the drink was 480
The water concentration in the cell was more dilute than in sorts drink, water moved out of the cell through semi permeable membrane by osmosis. i think?
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geffo123
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(Original post by awesometmartin)
1) Name one other way trees may lead to global warming - I said about the 'locked up' carbon and how it's released into the atmosphere
2)Left ventricle
3)Pulmonary vein
4)What's the use of valves - To prevent backflow of blood
I don't remember the rest but leave your answers
For Q3, It was aorta not pulmonary vein
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Stevie patten
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(Original post by MoTheCucumber)
I'm not sure of the truth in this, but I wrote:

Due to the sports drink having a higher concentration than the red blood cells, the sports drink particles moved through the red blood cell's partially permeable membrane and into the cell by osmosis (going along the concentration gradient). This caused the red blood cell to swell and expand, as it gains the sports drink particles, to the point of potential bursting.

I can't make sense of this, becuause the diagrams seem to contradict the explaination: http://www.bbc.co.uk/education/guide...gk7/revision/5
The water concentration wasn lower inside the cell, causing water to move out, as water moves out the cell looses mass. If the cells were placed in pure water, then water would be drawn into the cell causing it to burst.
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Harrison.B 15
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(Original post by haseeb_jarral786)
I wrote that : because of diffusion, the concentration would increase in the cell. I was confused because they didn't mention the concentration of what so I didn't include anything about osmosis 😑

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That's exactly what I thought. They never said what the concentration was of, it could have been ions, glucose, water anything. That's the only question I had very little clue as to the answer.

Edit: it definitely was Aorta not pulmonary vein, I remember the arrow facing out not going in.
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iLegend123
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(Original post by haseeb_jarral786)
I wrote that : because of diffusion, the concentration would increase in the cell. I was confused because they didn't mention the concentration of what so I didn't include anything about osmosis 😑

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(Original post by Harrison.B 15)
That's exactly what I thought. They never said what the concentration was of, it could have been ions, glucose, water anything. That's the only question I had very little clue as to the answer.
The concentration of the drink is the ions and glucose. If you think about it, concentration of the 'drink' can't be water. Water moves out because the ions it is a lower concentration outside.
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