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Zoology

Blazing goIITian

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19 Mar 2009 20:50:44 IST

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zoology quesn thread

None

hi guyz.. maybe u have seen the enormous sucess of the inorganic thread...so, i'm starting this here....

all we have to do is keep on posting new quesns after giving answers to previous ones.....even if the answer is known to u..

let me start wid the quesn...

bacteria also produce ATP like eukarya..

and it also uses proton gradient for converting ADP to ATP ...

mitochondria pumps it into the perimitochondrial space...

my quesn is.. where does the bacteria pump the H+ ions from its matrix....

options will be given 2morow if no one is able to answer....

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vignesh the cooler version of newton

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20 Apr 2009 23:11:40 IST

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by the way, ans. for the other quesn is cladophora (green alga).. its given in NCERT.. another quesn... how is cell wall of Chlamydomonas and Ulothrix different from other green alga??

Bhaskaryya Baruah

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21 Apr 2009 22:14:42 IST

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I think cell wall of Chlamydomonas and Ulothrix are mutlilayered . Not sure ...!!!!!

vignesh the cooler version of newton

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22 Apr 2009 00:04:45 IST

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usually, green algae have pecto cellulosic cell wall (outer pectose , inner cellulose, so they are multilayered).. but chlamydomonas has a glycoprotein hydroxyproline in its inner cell wall, and ulothrix has additional propectin in its outer cell wall..

vignesh the cooler version of newton

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22 Apr 2009 00:19:57 IST

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another quesn ...

name some deuterostomes with blind sac body plan (at least 1)......

Sahithya

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22 Apr 2009 08:22:26 IST

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coelenterata n platyhelminthes

Sahithya

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22 Apr 2009 08:28:28 IST

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on stimulation by a foriengn antigen in the body the T lymphocyte produce by division clone of T cells called

lymphocytes

lymphoblasts

plasma cells

chemical substance derived from living organisms that has an inhibitory effect on parasitic organisms is

antibody

antibiotic xplain plz,,,,,,,,,,,,

Sahithya

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22 Apr 2009 08:38:16 IST

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wat is the difference b/w artificiaaly aqired passive n active immunity

vignesh the cooler version of newton

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22 Apr 2009 19:26:36 IST

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hi sahitya.. i asked about deuterostomes and not protostomes..... platyhelminthes and coelenterates are protostomes..and they have only one opening in all stages of life.. i think i shud make my quesn clearer.. name some deuterostomes which have blind sac body plan in adult stage of life...

answer to sahitya's quesn..

artificially acquired active immunity.. they have antigenic parts of an causitive organism such that those parts are not virulent, but they trigger the immunity... hence, they are artificially acquired active immunity...

artificially acquired passive immunity... the injection of antibodies itself into body is called as artificially acquired passive immunity..

vignesh the cooler version of newton

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3 May 2009 08:52:18 IST

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hey.. no one is answering... plzz see the tunicates and ophiuroideae..these two have blind sac body plan in adult stage..

vignesh the cooler version of newton

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3 May 2009 13:05:38 IST

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another quesn... why is the desi egg ( fertilized egg) brown in colour while the unfertilized egg available in market white in colour ?? plzz some1 try.. if no one answers, i'll answer it after 3 -4 days..

tejas

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4 May 2009 12:45:45 IST

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the other egg tht v get in market is for commercial use.....it is not a result of fertilisation...it is just due to certain artificial hormones dat r given to the chicken.....this egg doesnt hav the YET TO BE BORN inside it bcoz no fertilisation ever occured........plzz nudge if i m wrng...!!!

vignesh the cooler version of newton

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9 May 2009 12:35:24 IST

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Answer.. .birds show polyspermy. i.e many sperms can fuse with single egg cell thought only one nucleus takes part in syngamy...and only nucleus of sperm goes inside the egg, the mitochondria part doesnt.. and Mitochondria is rich in Manganese and Mg..so the colour appears in desi eggs..

Sahithya

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9 May 2009 13:12:41 IST

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biceps muscle is attached to the humerus by a) tendon b) ligament c) aerolar tissue d) adipose tissue

vignesh the cooler version of newton

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9 May 2009 20:03:00 IST

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muscles are attached to bones by tendons... bones are attached to bones by ligaments ..so answer is tendons..

(( jannat ))

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9 May 2009 21:00:04 IST

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Q..In echinoderms radial symmetry is

1...primarily adapted

2...secondarily adapted

3...not present

4...always present

waiting 4 earliest reply..........

(( jannat ))

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10 May 2009 18:07:51 IST

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neone.............plz elongate dis thread yr...........

vignesh the cooler version of newton

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10 May 2009 19:27:33 IST

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yeah sure.. secondary adaptation.. their larva is bilaterally symmetrical..

vignesh the cooler version of newton

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11 May 2009 09:46:18 IST

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another quesn... true or false ....rho factor is always needed for termination of transcription .. explain..

vignesh the cooler version of newton

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12 May 2009 22:59:27 IST

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yaar.. no one's even trying.. its okay if u give wrong answer.. no1's gonna say anythin... plzz try.... answer for above quesn is false.. there's a rho dependant termination and rho independant termination.. in which poly U loop is formed....

vignesh the cooler version of newton

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12 May 2009 23:00:52 IST

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hey. .one more.. try this one... what's special feature of bacterial cell wall which provides resistance to it agains proteolytic enzymes... bacterial cell wall also has peptides. a tetrapeptide... whats so special that usual peptidases cant degrade it....

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