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laym
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#4001
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#4001
(Original post by Scienceisgood)
Did you mention anything about negative pressure?
nope, ive never seen that on a mark scheme before
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Secret.
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#4002
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#4002
For the controls could you say "amount of lipid on paper"?
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v_nelson
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#4003
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#4003
Hey Guys! Help!! I put cetromere instead of ceNtromere, will I still get the mark? i have no idea what i was doing then
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rumpelstiltskin1
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#4004
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#4004
ah, the best thing about that biology paper was my answer to this question: Suggest 2 advantages of a male snake breeding with a long tailed female.
- gets to spend a longer night with female
-
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Jaydude
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#4005
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#4005
(Original post by walkers38)
I swear its species diversity decreasing and not increasing.
Yep, my mistake, i didnt remember the question. I'll edit the post so people stop telling me this
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LaLady
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#4006
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#4006
(Original post by laym)
nope, ive never seen that on a mark scheme before
they might accept negative pressure for tension
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Blobar
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#4007
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#4007
(Original post by laym)
nope, ive never seen that on a mark scheme before
You just talk about

Active transport Endodermis, Transports mineral ions into xylem, lowers water potential in xylem, water moves into xylem because of water gradient, this is root pressure. Transpiration in the leaves through the stomata due to water gradient between leaf and air, creates tension in xylem, water moves from xylem to leaves due to water gradient, water molecules stick together by hydrogen bonding and form a column of water - cohesion tension. That would get you all the marks I'd say.
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haidaralinasir
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#4008
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#4008
(Original post by vigneshsb)
because, my fricking 'uncle who is a doctor' has a ****ing phd in oncology *****; stop acting smart
easy flexer...!
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laym
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#4009
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#4009
(Original post by Blobar)
You just talk about

Active transport Endodermis, Transports mineral ions into xylem, lowers water potential in xylem, water moves into xylem because of water gradient, this is root pressure. Transpiration in the leaves through the stomata due to water gradient between leaf and air, creates tension in xylem, water moves from xylem to leaves due to water gradient, water molecules stick together by hydrogen bonding and form a column of water - cohesion tension. That would get you all the marks I'd say.
okay thanks, i think i missed out some key facts like Hydrogen bonding between the water molecules but hopefully I think I'll have got 4/6 marks
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khalidpatel
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#4010
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#4010
How water moves across the endodermis into the xylem and into the leaves? 6 marks.

Can somebody write a full detailed answer worth 6 marks on this please, im kinda confused on what people are saying
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WheezyT
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#4011
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#4011
For the question about the amino acids missing I put the mutation may have cause a stop codon to be produced?

Posted from TSR Mobile
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robertfischer
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#4012
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#4012
Answer is 7.5 checked with my tutor


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Pataiiii
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#4013
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#4013
(Original post by haidaralinasir)
easy flexer...!
Who are you, your the flexer, hardcore!
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Pataiiii
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#4014
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#4014
Can you explain why ?
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haidaralinasir
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#4015
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#4015
(Original post by v_nelson)
Hey Guys! Help!! I put cetromere instead of ceNtromere, will I still get the mark? i have no idea what i was doing then
as long as you spelt your name right 'tis all good :P
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Pataiiii
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#4016
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#4016
(Original post by robertfischer)
Answer is 7.5 checked with my tutor


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Can you explain why?
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elja1905
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#4017
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#4017
(Original post by khalidpatel)
How water moves across the endodermis into the xylem and into the leaves? 6 marks.

Can somebody write a full detailed answer worth 6 marks on this please, im kinda confused on what people are saying
Ions actively transported with ATP into the xylem [1]
Lowering water potential in xylem causing water to move in [1]
via osmosis [1]
down a concentration gradient [1]
Transpiration of water [1]
causes cohesion tension between water molecules [1]
causes water to be pulled up the xylem
then maybe something about the xylems diameter decreasing?
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haidaralinasir
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#4018
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#4018
(Original post by robertfischer)
Answer is 7.5 checked with my tutor


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well if your tutor said so it must be right ... (!)
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elja1905
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#4019
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#4019
(Original post by WheezyT)
For the question about the amino acids missing I put the mutation may have cause a stop codon to be produced?

Posted from TSR Mobile
I put that too!
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Loquacious
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#4020
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#4020
(Original post by rumpelstiltskin1)
ah, the best thing about that biology paper was my answer to this question: Suggest 2 advantages of a male snake breeding with a long tailed female?
- gets to spend a longer night with female
-
Hahahaha ! Omg, that is great. :L
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