CHEM AND BIO HELP AND TIPS HERE

[nid404]

i will look for it

[Ghost Of Highbury]

I have requested the Dude to upload paper 6 notes, this is what i had. For chem.

[saleemsamer]

any notes for
- outline the use of microorganisms and fermenters to manufacture the antibiotic
penicillin
- describe the role of the fungus Penicillium in the production of antibiotic penicillin
and
- discuss the adaptations of the leaf, stem and root to three contrasting environments, to include pond, garden and desert, with emphasis on local examples (where appropriate) and the factors described in the core.

[Vin]

hey can somebody tell n explain appropriately the ans to this ques..

[nid404]

any notes for
- outline the use of microorganisms and fermenters to manufacture the antibiotic
penicillin
- describe the role of the fungus Penicillium in the production of antibiotic penicillin
and
- discuss the adaptations of the leaf, stem and root to three contrasting environments, to include pond, garden and desert, with emphasis on local examples (where appropriate) and the factors described in the core.

hmm.....is this co-ordinated science? If you want specific notes, i would have to see the syllabus

[nid404]

hey can somebody tell n explain appropriately the ans to this ques..

Flour dust suspended in air is explosive -- as is any mixture of a finely powdered flammable substance with air...
more fine the particles are, more the risk of an explosion

[holtadit]

hey can somebody tell n explain appropriately the ans to this ques..

In short... the greater the surface area the greater the speed of the reaction, hence more chance of a BIG BOOM !


I know nid explained it already but I wanted to give my 2 cents.

[nid404]

thanks 

[saleemsamer]

hmm.....is this co-ordinated science? If you want specific notes, i would have to see the syllabus

no i copied these from bio syllabus 0610

[saleemsamer]

also if any1 has the diagram of human insulin genetic engineering (simple igz required 1) plz post it here

[Angel Of Love]

if you want for human insulin and genetic engineering( i mean both differently) then here they are..
i mean maybe for insulin you xcan go to this website it has picture as well as something ore if you like it:

http://www.vivo.colostate.edu/hbooks/pathphys/endocrine/pancreas/insulin_struct.html

for genetic engineering i have attached..

[Vin]

@Angel of Love n nid404 congratulations!!

@nid404 thanku so much! i already figured that out in igcse complete chemistry pg 151..
jus logged on 2 see wat replies i'd get 

[CatAly$t]

hi,

can somebody explain to me why antibiotics kills bacteria but not viruses??

it's in the syllabus....

[holtadit]

hi,

can somebody explain to me why antibiotics kills bacteria but not viruses??

it's in the syllabus....

What antibiotics do is they prevent formation of bacterial cell wall, thus leading to their death
Antibiotics target only bacterial function and structure and so have no effect on virus'

By Nid

[Saladin]

What antibiotics do is they prevent formation of bacterial cell wall, thus leading to their death
Antibiotics target only bacterial function and structure and so have no effect on virus'

By Nid

Whoah, you dont need to know that much, simple that they dont work on viruses, because virusesbacteria do not show the characteristics of viruses. You will not be asked this question though, in the CIE spec.

You will be given questions like why has penicillin becomes less effective??

Because strains of Bacteria become more resistant to it.