F215 - Revision thread 13th June 2011

Reply 1900

This time tomorrow we all shall be doing the exam, and then it'll all be over. This unit is an absolute monster and i hope the paper is much better than the weather. Then again, if the weather is crap tomorrow, then the paper will be horrible. Thats what i feel lol.

Reply 1901

hellosarah

What's the difference between autosomal and sex linkage?? D:

Reply 1902

NWA

13

Original post by ManPowa

This time tomorrow we all shall be doing the exam, and then it'll all be over. This unit is an absolute monster and i hope the paper is much better than the weather. Then again, if the weather is crap tomorrow, then the paper will be horrible. Thats what i feel lol.

Its quite sunny where i am :smile:

Reply 1903

heartskippedabeat

10

Ahhhh i'm so unprepared :frown:

Reply 1904

ManPowa

7

Original post by NWA

Its quite sunny where i am :smile:

Im in birmingham lol and its absolutely dull, cold and ****e if im honest :colone:

Reply 1905

DontPropositionMe

Original post by hellosarah

What's the difference between autosomal and sex linkage?? D:

Sex linkage is when the gene is on the X or Y chromosome which is the 23rd chromosome. Its usually on the X instead of Y though because the Y is much smaller than X so it has less space. Autosomal refers to genes linked on the normal other 22 chromosomes.

Reply 1906

Nirgilis

14

Original post by heartskippedabeat

Ahhhh i'm so unprepared :frown:

You'll be fine :h:

.. Soon, we can all forget Biology forever (until uni) :biggrin:

Reply 1907

Mcfilly

Original post by ekta9

Ahh okay thank you, so basically weaknesses of the experiments :smile:

good luck for tomorrow

Yeh I thinK the evaluations are the types of things you can kind of make up on the spot.. and get a few marks if learning them fails!!

Good luck to you too!! Cannot wait till this is over! :smile:

Reply 1908

DontPropositionMe

Original post by heartskippedabeat

Ahhhh i'm so unprepared :frown:

I know

Everything I've learnt has run away from me :frown:

Reply 1909

Nirgilis

14

Original post by hellosarah

What's the difference between autosomal and sex linkage?? D:

Sex chromosomes are the Y chromosomes. Autosomes are just normal chromosomes.

Therefore autosomal with be XX and sex Linkage will be XY :tongue:

Reply 1910

TobeTheHero

15

summary of sliding filament? anyone?

Reply 1911

ngarner92

Original post by hellosarah

What's the difference between autosomal and sex linkage?? D:

Autsomomal linkage is that found in all body cells other than gametes, whilst sex linkage only occurs in production of gametes and is generally to do with alles appearing on the X chromosome and not the Y :smile:

Reply 1912

intellectual1

3

June 2010

-Flow diagram of main stages of Cheese - milk, protein, casein
-Cheese making Biotechnolgical process
-Pasteurisation
-Enzyme Rennin and milk
-Rennin advantages
-Rennin 8 marker - Bacteria genetically modified to produce Rennin

17 marks were on Biotechnology

Genotypes Phenotypes, Gene Interaction, Coding, Mutation, Hetrozygous, Genetic Diagram, Chi-Squared test, Gene Coding, Synthesis of Polypeptides

32 marks were on Genetics...

Dopamine DDR4 more genetics 18 marks...

20 marks on Ecosystems, Populations and Sustainbility which included Timber.

13 marks were on Plant growth hormones, germination of seeds, graph interpretation...

Quite clear about half the of the paper was focused on Module 1 Cellular Control...with quite a few marks on Biotechnology and Ecosystems, Populations and Sustainbility with 13 marks on the Plant Growth Hormones topic...

(edited 12 years ago)

Reply 1913

Mcfilly

Original post by heartskippedabeat

Ahhhh i'm so unprepared :frown:

Don't worry about it!!

The grade boundaries are very likely to be low as they have in both of the other exams.. and lets face it - OCR like to make their biology exams impossible :P :smile:

There is no point spending the whole day stressing about stuff you don't know because it won't help - so just calm down and have a chilled day of just going over the stuff - there is not much more you can do now!! :smile:

Good Luck!!!!! What do you need in this exam?

Reply 1914

Waqar Y

11

Original post by YuDunno

Yayy

thankyou!!

I think I might need to borrow your memory for tomorrow..

explain significance of various concepts of species, with reference to the biological species concept and the phylogenetic species concept .. cladistics?

Biological species concept - organisms who look similar and are able to interbreed freely and produce fertile offspring

Limitations -Not all organisms interbreed, e.g asexual reproduction in ulmus procera
-Not all organisms look similar e.g male/female peacock

Phylogenetic species concept - groups organisms, based on biochemistry, morphology, behaviour and embryology >

cladistics - grouping organisms based on evolutionairy history.

kind of unsure on this spread, it's very very badly worded in the heinmann book.

Reply 1915

wilsea05

1

Original post by intellectual1

June 2010

-Flow diagram of main stages of Cheese - milk, protein, casein
-Cheese making Biotechnolgical process
-Pasteurisation
-Enzyme Rennin and milk
-Rennin advantages
-Rennin 8 marker - Bacteria genetically modified to produce Rennin

17 marks were on Biotechnology

Genotypes Phenotypes, Gene Interaction, Coding, Mutation, Hetrozygous, Genetic Diagram, Chi-Squared test, Gene Coding, Synthesis of Polypeptides

32 marks were on Genetics...

Dopamine DDR4 more genetics 18 marks...

20 marks on Ecosystems, Populations and Sustainbility which included Timber.

13 marks were on Plant growth hormones, germination of seeds, graph interpretation...

Quite clear about half the of the paper was focused on Module 1 Cellular Control...with quite a few marks on Biotechnology and Ecosystems, Populations and Sustainbility with 13 marks on the Plant Growth Hormones topic...

fancy doing the same for Jan 11? :wink:

Reply 1916

TobeTheHero

15

Original post by intellectual1

June 2010

-Flow diagram of main stages of Cheese - milk, protein, casein
-Cheese making Biotechnolgical process
-Pasteurisation
-Enzyme Rennin and milk
-Rennin advantages
-Rennin 8 marker - Bacteria genetically modified to produce Rennin

17 marks were on Biotechnology

Genotypes Phenotypes, Gene Interaction, Coding, Mutation, Hetrozygous, Genetic Diagram, Chi-Squared test, Gene Coding, Synthesis of Polypeptides

32 marks were on Genetics...

Dopamine DDR4 more genetics 18 marks...

20 marks on Ecosystems, Populations and Sustainbility which included Timber.

13 marks were on Plant growth hormones, germination of seeds, graph interpretation...

Quite clear about half the of the paper was focused on Module 1 Cellular Control...with quite a few marks on Biotechnology and Ecosystems, Populations and Sustainbility with 13 marks on the Plant Growth Hormones topic...