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Higher Biology 2012 Discussion

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Why does oxygen affect the rate of transport of ion?

ion uptake happens via active transport. active transport recquires energy (oxygen+glucouse=carbon dioxide+water+energy) thus more oxygen increases the rate of respiration

Reply 21

becca.95

It's tomorrow aaah! Our teacher predicted an essay on respiration. Although other teachers said they tend not to put in the 'big' topic essay questions anymore?

Reply 22

lapples

Original post by becca.95

It's tomorrow aaah! Our teacher predicted an essay on respiration. Although other teachers said they tend not to put in the 'big' topic essay questions anymore?

going on all the other "predictions" for things that were meant to come up, e.g english/maths etc, I'm just going to revise all I can, then panic :colone:

Anyone else going to attempt all four essays?

Reply 23

TheFOMaster

Original post by lapples

going on all the other "predictions" for things that were meant to come up, e.g english/maths etc, I'm just going to revise all I can, then panic :colone:

Anyone else going to attempt all four essays?

If I have time I'll do both in question 1 unless 2's questions are horrible for me. If you do 4 do the just take your best from each question?

Reply 24

lapples

Original post by TheFOMaster

If I have time I'll do both in question 1 unless 2's questions are horrible for me. If you do 4 do the just take your best from each question?

if you do all four, the Marker automatically takes your best mark for each part :smile:

Reply 25

kennethwhat

Can someone help me with this please? Thanks x
(2010 Q5bi)

Reply 26

RFC1872

Original post by kennethwhat

Can someone help me with this please? Thanks x
(2010 Q5bi)

1:3:4

Divide everyhting by 3.9 as this is only to do with tannins.

Reply 27

$Avatar for /\NDY$

/\NDY

I hope one of the essay is respiration, can't stand unit 3 essays :frown:

This was posted from The Student Room's iPhone/iPad App

Reply 28

kennethwhat

Original post by RFC1872

1:3:4

Divide everyhting by 3.9 as this is only to do with tannins.

Sorry silly division mistake from me! Thanks very much :smile:

Reply 29

jane16

whats peoples predicted essays? my teachers said photosynthesis or respiration, protein synthesis, negitive feedback and stomatic fusion/genetic engineering :frown:

Reply 30

lollypopyy

my teacher predicted:
Unit1-Transcription/translation
-Phogocytosis
-Respiration
Unit2-Mutation
-Extinction/conservation
-Coping with danger
Unit3-Effect of light in growth
-Water regulation
-Monitoring population/density dependent and independent factors

Reply 31

LLL17

Original post by heatherblether

ion uptake happens via active transport. active transport recquires energy (oxygen+glucouse=carbon dioxide+water+energy) thus more oxygen increases the rate of respiration

Oh yeah so it is.. Thanks :smile:

Reply 32

OpenArms

Can anybody help me with this question please? :cool:

and this one...

I always thought diffusion was from high concentration to low concentration?

(edited 11 years ago)

Reply 33

pikey358

oh i pray its on respiration! Thats just glycolysis and krebs cycle right?

Reply 34

katoes

Does anyone know what the percentage for an A has been for the last few years?

Reply 35

mimx

Original post by katoes

Does anyone know what the percentage for an A has been for the last few years?

It's usually about 70%.

Original post by pikey358

oh i pray its on respiration! Thats just glycolysis and krebs cycle right?

Well they might have a tiny part about cytochrome system but they don't give you all that much to say at Higher.

Reply 36

SQA

I hope the essays come on Unit 3 and Unit 2 about transpiration stream/genetic engineering or something nice, goodluck guys! :smile:

Reply 37

TheFOMaster

Original post by SQA

I hope the essays come on Unit 3 and Unit 2 about transpiration stream/genetic engineering or something nice, goodluck guys! :smile:

Genetic Engineering is ok but Transpiration stream is just nasty.

Reply 38

WeeBundy

Original post by lapples

if you do all four, the Marker automatically takes your best mark for each part :smile:

Is this true? I've never been told you can do that and I'm scared get penalised for it. Also, can you write essays in bullet points?

Reply 39

mimx

Original post by WeeBundy

Is this true? I've never been told you can do that and I'm scared get penalised for it. Also, can you write essays in bullet points?

Yes it's true, you can read the mark scheme if you don't believe it :tongue:

First 'essay' asks you to write notes on x, so bullet points are fine.

Second one you can make heavy use of them if you like but it asks for an account of x, so needs to be a bit more essay-like.