Biology doubts..post here.. :D

[Khin Lamin Thaw]

as the biology paper is approaching, let us discuss our doubts and ideas here..

 

[nadinesujud]

hello,
can anyone explain the dif between prenatal screening and genetic screening? and how do we treat Cystic fibrosis?

 

[Simona]

hello,
can anyone explain the dif between prenatal screening and genetic screening? and how do we treat Cystic fibrosis?

well you can treat CF by a method called gene therapy, which is the insertion of normal allele of gene into cells to replace a faulty allele that causes an inherited disorder.

 

[xIshtar]

hello,
can anyone explain the dif between prenatal screening and genetic screening? and how do we treat Cystic fibrosis?

Prenatal screening is before the birth of the baby. Genetic screening is just screening at any time

 

[étudiante]

hello,
can anyone explain the dif between prenatal screening and genetic screening? and how do we treat Cystic fibrosis?

Prenatal screening is done before the baby is born to see its well-being (and it includes genetic sceening)
Genetic screening is only to see if there are any mutaions how high-risk genes
CF cannot be treated but Puffs, physiotherapy, antibiotics, vitamin tablets help to alleviate the symptoms

 

[awesomecharlie]

when do you all have the exams ? 15th

 

[Khin Lamin Thaw]

i ain't taking the exam this time..only on jan 2013
i guess those who r taking the current exam are going to have their biology exam on 15th

 

[awesomecharlie]

dam well if ppl in Sri Lanka do it hours before us or any county pls post the hard questions ....

 

[Khin Lamin Thaw]

r u angry at me? did i do sth wrong....~scared ~

 

[awesomecharlie]

no just angry that edexcel has become so smart

 

[nadinesujud]

THANKS ALL
how does the primary structure affect the function of an enzyme and its 3D stucture? please mye xam is tmrw morningg

 

[étudiante]

THANKS ALL
how does the primary structure affect the function of an enzyme and its 3D stucture? please mye xam is tmrw morningg

welcome

the primary structure is the order of Amino acids... if this changes, then the bonds formed will be different as the functional groups will be at different postions. This will change the shape and since the active site will not be of the right shape, it will not function as an enzyme

 

[nadinesujud]

it was for 5 marks and alot of points were needed like the solubility of the enzyme and its globular shape and so on .. i dunno:s

thank you again

 

[étudiante]

it was for 5 marks and alot of points were needed like the solubility of the enzyme and its globular shape and so on .. i dunno:s

thank you again

solubility? i dunno abt dat but the globular shape thingy is wat i explained

ur welcome

 

[Simona]

THANKS ALL
how does the primary structure affect the function of an enzyme and its 3D stucture? please mye xam is tmrw morningg

ummm enzymes are globular proteins-each enzyme has a specific 3D shape including an active site. only molecules with a specific shape fit into the active site.

 

[Simona]

guys do we need a calculator for 6BI01 ?

 

[Vj Destiny]

guys do we need a calculator for 6BI01 ?

yes u do..for manipulating da data

 

[Simona]

thx .... SO any1 had the xzam yet ?

 

[DANGERBP]

hey i need mark sheme for 2009 may n june ...
plus 2010 june
thx =p

 

[Simona]

so anyone did the paper yet ???