Biology MCQ thread..!!

[sweetiepie]

oh sorry i misread da question...

 

[histephenson007]

glad I helped

 

[histephenson007]

????

 

[Xthegreat]

????

answer is D.
HIV is a virus, not a bacteria. HIV does not have cell surface membrane, no ribosomes and does not respire.

 

[MHHaider707]

????

Its D coz the causative agent of AIDS is a virus so only genes are in common!!

 

[histephenson007]

????

answer is D.
HIV is a virus, not a bacteria. HIV does not have cell surface membrane, no ribosomes and does not respire.

Then, is HIV virus considered as a living thing???
because if it doesn't respire, it doesn't have one of the 7 characteristics of life

 

[MHHaider707]

It has some characteristics of living things and some of non-living things like it doesn't respire but it can reproduce!!!

 

[histephenson007]

Could someone plz show all the stuctures that are present and all the strucutres which are not present in a Virus

 

[histephenson007]

Are there ribosomes in mitochondria???? y isn't the anwer D??

 

[MHHaider707]

Are there ribosomes in mitochondria???? y isn't the anwer D??

Is it A?????

 

[MHHaider707]

and yeah ribosomes are present in mitochondrion!!!

 

[ivorydale]

can anyone tell me the oraganelles, we need to know, from the biggest size to smallest

 

[arsimme]

hmm i think nucleus , mitochondira , lysosome ,ribososme , chloroplast these r important .

 

[sweetiepie]

nucleus--->chloroplast----->mitochondria ---->nucleous--->lysosomes-->centrioles--->ribosomes....

 

[arsimme]

can somebody explain me mj / 07 question 4 plz

 

[mrpaudel]

i assume its varient 12...so..
1 divison of eyepiece=0.2/100= 0.002mm= 2micrometer..
(16-6) division has been increased which means 10 divison and therefore 20 micrometer for 4 hours.. thereofre 5micrometer for a hour!..therefore answer is A

 

[mrpaudel]

and i looked at the top right one...coz it is kept horizontally..so the result will come xact!!

 

[libra94]

q18 plz!!!
http://www.xtremepapers.me/CIE/Internat ... _qp_12.pdf

 

[mrpaudel]

read the question carefully...it says plant cell..so in plant cell..u dont have centriole but u do have cell walls..hope that helped!!

 

[libra94]

oh right, i didnt read abt the plant cell :$ thnks