Help in BIOLOGY ...please!

[princesszahra]

Assalamoalaikum!!

Why is the answer C ???

hydrolytic activity is the most in lysosomes
so the answer is C!

 

[sweetiepie]

watz da correct order of size of all organelles in ultrastructures????

 

[OakMoon!]

AOA!!

I think the ans. for this one is D....plus the examiner report says ''Only the more able candidates realised that from the piece of double-stranded DNA containing 6000 nucleotides, only one strand of 3000 nucleotides is used for transcription and translation.''

:%) y is the answer then given as B ?????

The answer is B. You only use one strand that is why divide 6000/2 to get 3000. Which is the number of nucleotides on one strand. 3 nucleotides code for one amino acid, hence, 3000/3=1000

 

[OakMoon!]

there are many reasons 4 cholera remainin a sig disease in some parts of the world. these parts r normally under developed or developing with no proper sanitation facilities, no heatlth n safety reagulations and bills. furthermore, ppl frequently live n overcrowded regions with close interaction with each other so that if one person gets infected da whole community becomes infected n acts as a reservoir of infection for the spread. no proper treatment is made available to the public so that disease continues to persist.
hope this ans it

Overcrowding is not a reason for cholera, it's for the spread of TB. Cholera is only passed through faeces and interactions has nothing to do with it. For cholera you may include poor hygienic practices, lack of vaccinations and what has been quoted above.

 

[OakMoon!]

watz da correct order of size of all organelles in ultrastructures????

Nucleus=>Chloroplasts=>Mitochondira=>Nucleolus=>Lysosomes=>Centrioles=>Rhibosomes.
These have been gathered by going through the biology MCQs.

 

[hassam]

THATS FOR U HAMID ALI

 

[Xthegreat]

THATS FOR U HAMID ALI

ans : A?

 

[hassam]

YA...SMART GUY

 

[OakMoon!]

@Math_Angel: The answer is A. Metabolite 3 acts a non-competitive alosteric inhibitor.

 

[workinghard]

@hamidali thnx 4 pointin out BUT i do no dat ....
but can u look at it 4m ma point of u ... congested areas ll hv more chances of disease spread dan a sparsely populated area as not only people ll b more prone 2 using da same sewarage water but also da hygiene conditions ll b poorer ... no??????

 

[OakMoon!]

What about Africa? It is not a congested area, still cholera persists. But in Europe where proper sanitations are available, the problem doesn't prevails even with the overcrowding. The points are not to be told about any disease BUT about cholera. You can just fit in every point in every other disease question.

 

[XPFMember]

@hamidali391 Assalamoalaikum!! cud u plz give me the 'Proper' answer for that question...that cholera one...actually i saw that ms answer...but i dont know how to frame a proper answer! :unknown:

 

[OakMoon!]

I believe you should try to frame the answer yourself. Better for your learning. I, myself, am not good at making the structure of questions so I won't give you one which will give you more confusion. You just have to put the points in a paragraph, and you get the marks. No big deal. You don't need to use "heavy" english vocabulary, but Biological terms are always preferred.

 

[sweetiepie]

plz help me oct/nov 12 q.10...???

 

[XPFMember]

Assalamoalaikum!!
plz post the link to the paper!

 

[sweetiepie]

http://www.xtremepapers.me/CIE/Internat ... _qp_12.pdf this one q.10???

 

[workinghard]

@sweetiepie da ans is 4 cux haemoglobin mol is almost completely saturated and wen itx saturated it can cary a max of 4O2 molecules..

@ hamid ... even if itx not conjusted its infrastructure is not developed n even wid crowded areas of europe proper infrastructure helpx control da disease...
i wx talking bout areas where infrastructure is not developed n are crowded compared 2 dat of sparsely populated ....
besides itx fine by me if u dont agree cux i no i ll get ma marx anywy if i wrote dat dowm... u c ma mom is a bio tchr n she normally corrects me wen i get somethin wrong...
itx kay Math_angel if u dont wanna use it as well... mayb some one ll come up wid somethin better...

 

[XPFMember]

@workinghard...it isnt that....i just wanted to know what hamidali wud write....

 

[sweetiepie]

@working hard bt 0xygen has 2 molecules how can it has 4 molecules oxygen valency is 2.....:%

 

[workinghard]

no no math_angel i didnt mean 2 imply anythn i wx jst suggestin dat u wait 4 otherx responses' as well...
@sweetiepie ... i m sorry i didnt get ur question
wat i said wx dat a haemoglobin hx 4 O2 binding sites n wen its saturated all 4 sites are occupied n dats y v gv da ans 4... can u re ask ur ques so dat i can ans u in a better way?