Edexcel A2 Biology Unit 5 (6BIO5) - 22/06/2011- OFFICIAL THREAD !

please will somebody explain to me why the stalked particles H+ moves through is ATPase instead of ATPsynthase. If ATP is made when they diffuse through shouldn't it be synthase?

Reply 4201

rudizzy123

5

Original post by JizzMan

Last exam, LEEEAVE IT YEAH

Gonna flop this for sure; thought I had it all under control but when I did the past papers i realized its a whole different story... oh well, here's to hoping my coursework will help me pull through for the overall grade

DENCH two twos yeah

Reply 4202

godknows

does anyone have a link to any good revision notes on the net for this unit ? plz help .. i will rep you every single day for 10 days :biggrin:

lol

Reply 4203

Omar1994

does anyone have a link to any good revision notes on the net for this unit ? plz help .. i will rep you every single day for 10 days lol

http://www.mediafire.com/view/?0axz4vqmxxyq1at
http://www.scribd.com/doc/89838095/Scientific-Article-Questions-Answers-by-Stafford-Final

Reply 4204

SLlewellyn

Original post by ellie3

please will somebody explain to me why the stalked particles H+ moves through is ATPase instead of ATPsynthase. If ATP is made when they diffuse through shouldn't it be synthase?

Someone can correct me if I'm wrong, but ATPase and ATP Synthase are both the same enzyme I believe, or at least they are where the mark scheme is concerned. I had such a confusion when revising for BIO4 in January.

Reply 4205

Omar1994

Someone can correct me if I'm wrong, but ATPase and ATP Synthase are both the same enzyme I believe, or at least they are where the mark scheme is concerned. I had such a confusion when revising for BIO4 in January.

yup

Reply 4206

ghogho

Original post by rudizzy123

Don't take my word for it because you never know. If you haven't revised and have got limited time then i'd reccomend leaving it out.

I think I know everything in syllabus now excluding past units, what will trip me up in this exam as usual is how science works, ethics, maths questions, poor interpretation and running out of time (as usual) :frown:

On an additional note, dont people find it odd when people leave exams early?

saaaame heree!!!! :s-smilie:

ya its really weird last year in AS i saw a gurl she just wrote her name ,went through the paper for few minutes then closed her paper and slept zzzzzzz !!!! :eek:

and finally went out of the exam laughing :eek:

i was totally astonished!!! these r weird ppl

(edited 11 years ago)

Reply 4207

bertiejess

Pfr is needed for the plant to be able to germinate/flower isn't it?

Reply 4208

Bright

11

Original post by bertiejess

Pfr is needed for the plant to be able to germinate/flower isn't it?

Yep it is the biologically active form, red light transfers Pr to Pfr

Reply 4209

Cleoleo

1

please please please could someone upload jan 12 and MS as an attachement, I will love you forever ! pleaaseee i'm desperate :frown:

Reply 4210

Cleoleo

1

can someone explain what the refractory period and all or nothing principle is pleasssse?

Reply 4211

xxbiologyxx

found this ques interesting :smile:

explain why these changes in the percentage distribution of blood during exercise are neccessary.
(5marks)

1. muscle contracts faster during exercise
2. needs more ATP
3. more glucose/O2 needed
4, more CO2 removed
5. blood diverted away from less important parts
6. increase in blood flow to the skin to lose heat
7. to maintain temperature (thermoregulation)

ciao! biology 5=nightmare D:

Reply 4212

JizzMan

Original post by rudizzy123

DENCH two twos yeah

ha, you know about the kling kling

"women have a relationship with food"
that's a pretty weird image

Reply 4213

Terrorofgirlscouts

How do transcription factors work while in the nucleus?

Reply 4214

JizzMan

Original post by Cleoleo

please please please could someone upload jan 12 and MS as an attachement, I will love you forever ! pleaaseee i'm desperate :frown:

here ya go

6BI05_01_que_20120307 (1).pdf818.2KB

6BI05_01_msc_20120215 (2).pdf262.5KB

Reply 4215

JizzMan

Original post by Terrorofgirlscouts

How do transcription factors work while in the nucleus?

do we have to know about transcription factors?

Reply 4216

Terrorofgirlscouts

Original post by JizzMan

do we have to know about transcription factors?

There a mention of it in the Pre-release and i just couldn't remember how they work.... do they attach to the DNA or mRNA?
:confused:

Reply 4217

FishOuttaWater

8

With respect to the article, would they quote something from it and then ask us a question based on biological knowledge e.g stuff from this and other units or would they simply ask us a question straight from the article e.g. "What is the protein linked to the development of BAT?"

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

Reply 4218

Gago99

Original post by JizzMan

do we have to know about transcription factors?

I think just a very basic understanding of how transcriptional factors will be enough. As in they switch on genes which were previously switched off hence altering the gene expression and cause transcription of different mRNA

Reply 4219

ellie3

Original post by SLlewellyn

Someone can correct me if I'm wrong, but ATPase and ATP Synthase are both the same enzyme I believe, or at least they are where the mark scheme is concerned. I had such a confusion when revising for BIO4 in January.

Ahh thanks. I think the beginning of the CGP revision guide confused me cos it had ATPase breaking down ATP and ATPsynthase reforming it. Mark schemes seem to only want ATPase anyway

Edexcel A2 Biology Unit 5 (6BIO5) - 22/06/2011- OFFICIAL THREAD !

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you