OCR 2010 A2 Biology Unit 2 - Control, Genome and Environment

Hey I thought I may aswel post up my notes aswel incase it could help some people out, I have made them for modules 1, 2 and 3.

Module 1 - Cellular Control.docx

Module 2 - Biotechnology and gene technologies.docx

Module 3 - Ecosystems and sustainability.docx

Reply 2981

noodlecookie

The TSR Star.

Everyone is ignoring me though lol. I think they all hate me already. Artificial selection please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Oh well there's not a lot to go over for that one..

Bread wheat produces a high yield, and this is why:
1. Large-eared wheat plants (i.e. high yielders) are bred together
2. The offspring with the largest ears and highest yield are bred together
3. The offspring of that with the largest ears and highest yield are bred together

and so on for ages and ages

4. Ta-da... a plant with large ears and a VERY high yield!

.... That's pretty much it!

Reply 2982

The TSR Star.

11

Everyone who has negged me, I hope you all fail :smile:

Karma's a bitch. You just watch. Haaaaaaaaaaaaaaaaaaaaa

Reply 2983

Talon19921992

In transcription some people are saying the DNA unravels by dipping into nucleolus, other by DNA helicase. Which is it? (I haven't got any mark scheme to look on for this answer) Thanks

Reply 2984

aimz08

13

Seeing as people are posting up notes...Anyone have anything easy to understand and learn for Animal Responses? Because it's really confusing...not the brain things but the muscle contraction...

Reply 2985

noodlecookie

Talon19921992

In transcription some people are saying the DNA unravels by dipping into nucleolus, other by DNA helicase. Which is it? (I haven't got any mark scheme to look on for this answer) Thanks

I was always taught it was uncoiled by DNA helicase, I have no idea what "dipping into the nucleolus" means :confused:

Reply 2986

aimz08

13

Talon19921992

In transcription some people are saying the DNA unravels by dipping into nucleolus, other by DNA helicase. Which is it? (I haven't got any mark scheme to look on for this answer) Thanks

What? DNA unravels because RNA polymerase binds to a gene at the start of a DNA molecule...Hydrogen bonds b/w the two strands break so you are left with two uncoiled strands of DNA one of which is used as a template to make mRNA

Reply 2987

Mit321

The TSR Star.

Everyone who has negged me, I hope you all fail :smile:

Karma's a bitch. You just watch. Haaaaaaaaaaaaaaaaaaaaa

So surely that means the same for you? By you hoping they all fail, you will? Karma's a b*tch :biggrin:

Reply 2988

The TSR Star.

11

Mit321

So surely that means the same for you? By you hoping they all fail, you will? Karma's a b*tch :biggrin:

Nope.

Reply 2989

DR_X

The TSR Star.

Everyone who has negged me, I hope you all fail :smile:

Karma's a bitch. You just watch. Haaaaaaaaaaaaaaaaaaaaa

if we all fail, then no one will fail.......the wonders of UMS..... :rolleyes:

Reply 2990

The TSR Star.

11

noodlecookie

Oh well there's not a lot to go over for that one..

Bread wheat produces a high yield, and this is why:
1. Large-eared wheat plants (i.e. high yielders) are bred together
2. The offspring with the largest ears and highest yield are bred together
3. The offspring of that with the largest ears and highest yield are bred together

and so on for ages and ages

4. Ta-da... a plant with large ears and a VERY high yield!

.... That's pretty much it!

Thank you soooooooooooooo much!!!!!!!!!!!!!!!

Reply 2991

The TSR Star.

11

DR_X

if we all fail, then no one will fail.......the wonders of UMS..... :rolleyes:

huh? I clearly said to the people that have negged me? I didn't say everyone :facepalm2:

Reply 2992

noodlecookie

DR_X

if we all fail, then no one will fail.......the wonders of UMS..... :rolleyes:

OMG yeah I forgot that EVERYONE DO FANCYPANTSRUBBISH IN THE EXAM PLEASE TY :biggrin:

Reply 2993

aimz08

13

Seriously Concentrate on the bio exam people :P Stop being childish. It's Rep - grow up.

Reply 2994

Mit321

The TSR Star.

huh? I clearly said to the people that have negged me? I didn't say everyone :facepalm2:

I can see why you have neg rep.....

Reply 2995

Reflex

noodlecookie

OMG yeah I forgot that EVERYONE DO FANCYPANTSRUBBISH IN THE EXAM PLEASE TY :biggrin:

LOL and then you trick us all and end up with full ums -_-

Reply 2996

Falcon91

noodlecookie

I was always taught it was uncoiled by DNA helicase, I have no idea what "dipping into the nucleolus" means :confused:

Transcription - dipping into nucleolus

IN REPLICATION - helicase enzyme separates the strands...

Eating btw, so trying to be productive while eating :s-smilie:

Reply 2997

The TSR Star.

11

Mit321

I can see why you have neg rep.....

Why? I only got neg rep because I disagreed with surrogacy agreements not being legally binding. I used to have 3 green gems. The fact that I have neg rep makes everyone see my post as worthless. And people, like you, make comments like that.

Reply 2998

dopeyangel101

Question: Explain the different types of immobilising enzymes, and the advantages of immobilisation in general.

Partly to see what other people say and to get people thinking :smile:

Reply 2999

CHILLIN-DRAGON

10

noodlecookie

Oh well there's not a lot to go over for that one..

Bread wheat produces a high yield, and this is why:
1. Large-eared wheat plants (i.e. high yielders) are bred together
2. The offspring with the largest ears and highest yield are bred together
3. The offspring of that with the largest ears and highest yield are bred together

and so on for ages and ages

4. Ta-da... a plant with large ears and a VERY high yield!

.... That's pretty much it!

do we not need to know the specific gene letters for them or just state the process of selective breeding like how you put it :biggrin:

OCR 2010 A2 Biology Unit 2 - Control, Genome and Environment

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