As Unit 1 Biology AQA Jan 11

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Reply 40

woods.vanessa

Original post by manea

Stroke Volume = Cardiac Output / Heart Rate
so, it was 5000/55= 9.09

But isnt 5000/55 = 90.9
not 9.09 ??

Reply 41

Mathematix

Oops I meant 90.9 I actually put that in the exam

I put 9 for water molecule thing

And for the first one I reckon cell membrane NOT cell wall

Reply 42

EffKayy

Original post by Jorgeyy

Oops I meant 90.9 I actually put that in the exam

I put 9 for water molecule thing

And for the first one I reckon cell membrane NOT cell wall

god i just realised my silly mistakes! :frown:

I put cell wall.. :mad:

Reply 43

manea

Oh yes I remember now, it was sorry ^^

Reply 44

rozevans

Original post by EffKayy

You had to talk about loss of elasticity (1), permanently inflated (1) low gas exchange, so less oxygen to alveoli (1) . surface area is reduced (1), less oxygen into the alveoli so you cant respire and therefore will be tired (1)

ok so i probably lost twoo marks... i think i can live with that!!?

I cant remember i fi put 9.09 or 90.09 but yeah i didnt notice the cm3 to dm3 thing in the cardiac output question... so might have gotten that wrong... sneaky aqa!

Reply 45

Mathematix

The whole of the unit is all about cell membranes and their functions and stuff... if it's cell wall ****s gonna hit the fan

Reply 46

EffKayy

What did you get for the sucrose concentration being the same as the the water or whatever? :s-smilie:

Reply 47

343arcou

Yeah i got the same calculations.

What did people write for the bond between the two molecules and the question after saying what was in a triglycoride that wasnt in that????

Reply 48

EffKayy

Original post by rozevans

Think i got 5/5 and 5/5 but i lost the first mark as i put cellwall and i forgot sem disadvantages.. :frown:

Reply 49

KingofSpades

well well well how was it

what did everyone put for number of water molecules. I put 11

I know I definitely got the 15 cm3 and 5 cm3 one wrong

half the paper was how science works

how did everyone find the last two questions?

Reply 50

woods.vanessa

Original post by EffKayy

What did you get for the sucrose concentration being the same as the the water or whatever? :s-smilie:

.35
you?

Reply 51

KingofSpades

Original post by Robert McGeachan

Yeah i got the same calculations.

What did people write for the bond between the two molecules and the question after saying what was in a triglycoride that wasnt in that????

glycerol and 3 fatty acids

Reply 52

Superlogon

Original post by EffKayy

What did you get for the sucrose concentration being the same as the the water or whatever? :s-smilie:

The potato graph one? I put 0.35

Reply 53

manea

Yep it is the cell membrane because it's the most inner one.
They go in that order: cell membrane -> cell wall -> capsule

Reply 54

KingofSpades

Original post by woods.vanessa

.35
you?

woo

Reply 55

Superlogon

Original post by KingofSpades

glycerol and 3 fatty acids

the answer was ester bond

Reply 56

woods.vanessa

Original post by Robert McGeachan

Yeah i got the same calculations.

What did people write for the bond between the two molecules and the question after saying what was in a triglycoride that wasnt in that????