AS Level Biology: Topical Questions

[Heba A.Moety]

hello do we have to study about transmission and scanning electron microscopes for bio A levels ??or just we have to know that they are the 2 types of e- microscope?

 

[Starlight97]

great work .... thumbs up

 

[Heba A.Moety]

hello .. plz i need some help here !!
i read that the same enzyme can catalyse both the forward and the bacward reactions ...but how is that isnt it like sub+enz=prod so if we take it backwards it will be like product+enz=sub but the product has different shape to the sub and the active site so how it is catalysed by same enz. ??

 

[IamSodu99]

Thank you for the topical questions, if you may please help by uploading the answers. Thanks in advance.

 

[Reshman]

hello do we have to study about transmission and scanning electron microscopes for bio A levels ??or just we have to know that they are the 2 types of e- microscope?

As far as I know it's always better to know the difference and similarities between the two electron microscopes but u don't have to go into details about it

 

[Heba A.Moety]

As far as I know it's always better to know the difference and similarities between the two electron microscopes but u don't have to go into details about it

thnx a lot and plz what about hill reaction in photosynthesis is it there?

 

[bubbles1997]

As I promised, I am uploading the rest of AS Level Biology Topical Question Bank.
Now all the topics from A to K are uploaded.
Hope you will find them useful.
Keep on the hard work.

I have selected those questions which will make your concept clear and will form a clear image in your mind about how the examiner asks questions.
I will also be uploading Revision Question Bank shorty. Till then stay tuned.



Warm Regards,
Waleed Ahmad Khan
Edwardes College Peshawar

please Upload answers as well. Thanks!

 

[umer salman]

plese uplode the marking sheet too , plus thank u for making our lifes easier

 

[Shyma Dinesh]

Inshallah I am working on A2 topicals. I will upload all of them but after some time. Though you may have questions on respiration. See attached

Hi,
Thanks for uploading chapter wise questions. Could you please upload chapter wise questions from A2 topics ?

 

[aparbhandari]

hello guys can you upload the answers of As tropical questions

 

[Evil.bidur]

hello guys can you upload the answers of As tropical questions

Sorry apar we can't //..

 

[Glory Hunter]

Khamorgy1998

 

[exploded diper]

Inshallah I am working on A2 topicals. I will upload all of them but after some time. Though you may have questions on respiration. See attached

Answers please ...... thanks btw

 

[exploded diper]

can sumbody check my answers..(the mcq's only)

 

[My Name]

answers??
atleast for mcqs

 

[Robert Flockhart]

I need the the full set of topical past paper questions from 2001 till 2014

 

[saoud khan]

Here you go. Sorry for getting late

listen bro do you have the mark scheme for the chapter vise questions

 

[Abdul Hanan]

can anyone please post the mark schemes to the topicals... please.. it will be really helpful. And how are you guys checking your solved topicals ?

 

[sabrina786]

great work but where are the answers??

 

[IGCSE MAN]

In a certain organism, two traits are determined by two pairs of alleles, each of which shows dominance. One trait is determined by some combination of the alleles A and a. The other trait is determined by some combination of the alleles B and b, which are located on a different chromosome from A and a. Construct a complete Punnett square to show the results of a cross between two parents with genotypes Aabb (parent #1) and AaBb (parent #2). Then determine each of the following:

a) What fraction of the offspring is expected to have the same genotype as parent #1?
b) What fraction of the offspring is expected to have the same phenotype as parent #2?
c) What fraction of the offspring is expected to be dihybrid?

Please help me, i have a test tmmw!!! if possible please mail me the answer at [email protected]