A2 Biology | Post your doubts here

[angelgirl:)]

Errors in the MarkScheme??!
43/O/N/11 Q11 b
Chiasma formation in metaphase I? Isn't it supposed to be late prophase I?
41/O/N/10 Q9 a
Males homogametic? Aren't they supposed to be heterogametic?
and finally... 43/M/J/10 Q7 c
Anaerobic respiration in yeast involves ethanal dehydrogenase? Isn't it supposed to be alcohol dehydrogenase?
So, is it me or they are really making MISTAKES???

exactly even i was confused with the ethanal dehydrogenase 1...it is suppose to be alcohol dehydrogenase...

 

[histephenson007]

Does anyone have any tips for describing graphs???!!! I ALWAYS! mess up that part

 

[angelgirl:)]

Does anyone have any tips for describing graphs???!!! I ALWAYS! mess up that part

how was math exam?
and even i want tips...if u get tell me as well

 

[histephenson007]

how was math exam?
and even i want tips...if u get tell me as well

Nah, I don't do math. But my friends came out like "wtf was that?!" lol
Good job dropping math

 

[angelgirl:)]

angelgirl:) remind me again...at the moment i have to go...have maths exam...i think i've written an answer for this...will share it.. do remind me if i dont reply

how was math?

 

[user]

how was math?

alhumdulilah it was nice..assalamoalaikum wr wb btw
remind me after a few hours pm me..
and i'll try telling u abt the describe part...thats easy...

 

[angelgirl:)]

alhumdulilah it was nice..assalamoalaikum wr wb btw
remind me after a few hours pm me..
and i'll try telling u abt the describe part...thats easy...

sure...

 

[girlscampisra]

can anyone please explain me DNA sequencing?

 

[angelgirl:)]

can anyone please explain me DNA sequencing?

http://www.wiley.com/college/pratt/0471393878/student/animations/dna_sequencing/index.html

 

[hassam]

alhumdulilah it was nice..assalamoalaikum wr wb btw
remind me after a few hours pm me..
and i'll try telling u abt the describe part...thats easy...

tell me too....m also not doing good at describing graphs

 

[hassam]

and paper 32 went AWESOME

 

[hassam]

SO LETS start biology(hardest paper 4 me)

 

[samwickz]

can some1 give me d correct definition 4 biodiversity plzzzzz

 

[girlscampisra]

biodiversity is the presence of a variety of species, the variation within species and the genetic diversity between the species.

 

[angelgirl:)]

can some1 give me d correct definition 4 biodiversity plzzzzz

range of habitats, communities and species in an area, and the genetic variation that exists within the population of each species..

 

[hassam]

here is my guess;cnsidering previous papers
EXCRETION.....
FEREMENTER,batch/continuous culture,penicillin production
biodiversity meaning,reasons for mantaining it,
interpretation of action and absorption spectra,
gm crop,golden rice,BT maize/inbreeding in maize+polyploidy in wheat
chi square test,dihybrid

question related to isolating mechanisms and natural selction for section B......

 

[girlscampisra]

biodiversity question comes almost every year! endangered species n stuff!

 

[angelgirl:)]

biodiversity question comes almost every year! endangered species n stuff!

yes...

 

[smartangel]

guys..any good notes that i can go over in a day?

 

[hassam]

chek revison guide....its a hundred pages.......http://studyguide.pk/?p=431