gate life sciences 1997

8/13/2019 GATE Life Sciences 1997

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IGi\ f'E-1997 I ol 15lc=:=======LI E SCIENCESH : CHMI81HY (COMP UUORY)

ONE MARKS QUESTIONS (114)Foo each u b q u t i o n given below. fouralternathes r u ~ poovided of which only one is

Woite the co rr ect an sweoin the answerbook by writing n. b. e oo d tdong with thecotTt S pOndiug sub queo tion numbeo.

1

3

( J'i X 1 = 14)

The de Brogue length for a hydrogen atomIS,a, equnl to tha t of a deuten um atommoling with the same veloci tyb. twice that ofa deu terium atom moving\l'ttll 01e same elocit)c. equal to that of n de ute.rium atommoving with half the 1eloci yd equnl to that of deulenum :11ommo1lng 11itb t ice tloe o c o t ~The bond order m super oxocle 0 . a n is:a. 1.0b I ;;c 2.5d 0.5Which one of the fol lowing co mpound sc. u1 r o b b be prepared in n pure slatefrom Bent.ene by usong o successh eelectrophonic s\lbslitul on reactions /a.

cJo ~b.

( MIII.J~c.

4.

6

d,

Wlnah one of tl>e follo111ng cations wolle:.htbot the hi,gbest polari.t.irtg power-a. LI-b Cs c. Al1 'd. Mg Which of the fo llowing bas Zonligur tion ja.

b.

c.

d

The lraJISIIIOn meUlls usual ll' exhtbllhigher oxidation states In their a. OXIdesb sull idesc. bromodes


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7

R

II)

tL iodidesWhich one t>l fa I L Wing pair> t ~ fmoltct.Jk-s doe oi not ronstiUth ~ o n nstructtJrcs'?a.

. P : + Iu : . . c ~ - c : -b.

;c; - -C - f -H

:O t1 c. ~ ; 1 - Hc.

u...:OH6

Which one 1f 1hc lollnwing ulll v i g o r o u s with \\liter'a 1.1b. lc. KcL CsWhich of Uac fcJilowing SUIICIIIC11t is truefor Ito rcactinn gien below'......lie. ~ II ct t >c. efl _ (IOOICjr.t' e J ~ a ~ . . "

o. h ~ als


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0 0b. E. ; e.G - E.- -. . . .d. ~ ~ ,_\() -tot .

euch .sub-qu es tion gin_n bt'low. fourn J h ~ l l \ l l t h arc. prmidctl uf \\Jtich 0.1tJy Olle i.sc o r n ~ c t \ V.;rt. the- corr t anSWl r in the au.t'wcrlxwk by writio&t a, b, c nr d ulong. wid. tltt b 1 1 - : sub question JlUUlbtr.1

16,

The fruclin 11f mkinetic energy equnl Ia 4.548300 K is:

IlIb. .lIc. 4

J. 5

(3 2 = 6)p o S S t . . i n g10', , J nt

'llo maJQr orj ,aruc produot ul tltolhllol' ins t ~ ~ r i u

~ ~. . , _ I )

a.....'

h.

. ~I.

17

J uJ 15

Whi ch is princi[l


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l 1.

10

Wri te the stntcrure of compoundsA. B and C in th followingrenction sequence.

31 11-_ .-:-1 SJ>d. .- - 7 - - - - ~ - . . . , . 1 i012 ' 2 '-/I'd ...,.. L.:.Jl5- ~ D f , )

( < > ; ' { ' ' ~ .,. 0

(iii Which lf he following lwotosy lares I and II. is expcc teLI 10~ t g o faster acc t,1lysls anti why?

(2)

(i) Wri te an elct:lrlJchemicaJ ce ll forthe 1inc-brom ne conple andcalculate its standard p.1temia lfrom the datn given below . Suitewhich is the stronges t oxid i1ingagent.

IU ACTION ... :.......... . .z, - 0.7632 2

No+c toY -2.7121.3511.065

(3)l l . For the NaC I struc ture given in Fig. H5

estimatea. the number ofNa and cl"ions per unitcellb. 0 1 ~ w-o rdJnution nwnber oiNa 2)

,/ ), L. -} /l.o / v/ 7o / [7...... I,;

n (i)

( ii)

13. (i)

(ii)

24 ( i)

( ii)

I ol l5One mole of an inert gas is allowedro expand isothem,all) from 50cmJ to 500 cm1 nt 300K. Calculatethe change in er1rropy of t.hesystem.31

lle concent.rntion of undissocintedace tk acid in u \1.() 1 M sodiumacetate solution is 2A Io' M.Estimate the pH Qf the wlmion ifthe dissociation constant uf c

n ~ i d " - 1.75' 10 5 PlFor a reaction.A El -> p r o d uThe initial rotc o f reaction wasstud ies 3l vaJ'ious coucecnruli(li1S of1\ nod R. then following data wereobtnlned:l_ ... .. r-l ..... .. .. ...,..,....... 10 ...-..Deduce the order o l' the reactionwitlt respect to A and B. andcn lculato th r the forma tion of productsshown in the following reaction.

21

Indicate the popu lat.ion of eleetmnsexpected far r1 and e,. orb iraJs lorlin( ,o); and M n ( C N ) ions.

l ~ t e the magnetic moment(spin only vn luc) ltlr 1/u(C\ ),ion.In the reaction.[C ( I, (NII;),] +C I ->

[cuCI, (M 1 ) , J /1 II ,(3)

onl) one n 1 p l product isobt nlned . Is the initial complex cixor r a n ~ l Name t.be conflgurntiou ofthe product.


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(2)

F'11r t-ach 'Ubque.low, rtouroll ernuli\'"" UrC jli'OVided or whfcl; only QJIC I>c o r r ~ c l Write Hw cnrrect 0 1\or in the unswerhOOk by writing a. h. c .or rl alrong with tlwurn..,.pund iua: h' 4Ut.StiHI num twr.

(10 1= 111)I, The l c h ~ c con$111nl, K,, J,

:o. uuntcricolly equal to 1r:...

3.

4.

h. dependent on enzyme oonoentr.u ionc. independent of pHcL numericaUy aqual to the, s ulntrahconceniSltlion thO gh-es half-ma'\ tmnl

velo< l)'F or determmmg the m i n . 1 1 nmlno :Jcidor n polyl'lacl3teb c l ~ n : a s e d ox iUntion uf pyruva te In I C),and wat


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Column AA. Osirbu leylotiou13. w ~ t o r b l e ontimcidJJutC Glutnmolo:>rCSidllcD. Vitamin U n < ( l tE l n c r c ~ c liJlUikrnliellimuc. llhcnds often coor3 in prolined. is " type ofsecondary .,lnocture

18. \Vhlch ono of t11o following shlt1'.'111enlllconcerning C'3:. i9 ~ o r r e ca. iniJ'ticelluJru conCC ntr:Uiun of Ctt.hightr rh:ln thor c)f lho e octm ce llnl;>rIJuidb. th t: CQncefl lrntfon Clf C\'lOROJi - C t ittrnn ; ionlly decreased l;y U


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1 1.

22

23.

2>1.

2 5.

b ICVI:t9e Lraoscriptll


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~

5

7,

Iodole-3-cetic ucidb. 6-f\lrluryl minopuclnc

~ d ;sic.acidd Gibborcllic ac.iOl bod dewiOJ>m ertl'\VlJich of the ti>llo \1 ing L tll.yme; fix c oin the f 'lvin C) of photO Iynlhe;;IS nndalso ploy n role in p h C > I i > r c ~ p > r o l i u n ln C 1lllltnt'la J>}ruvaJc cnol>fll\)lttsllb. ec. 1 1 l o diphw.'jlhntc enrbol()'led. plwsphol'ibulokinaseP2 (loJiculcs) Ah J G, 13 the g.cnoral lOoro l li>lll1Ub of the fn ntily, Liliaceoo

b. As terncc acc. P o : > ~ e a ed. c O < > eU' toon>tiO k t t l b Ul


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14 .

15

16.

17.

Compound X is fonncd in the Mrom o f ~chloroplas t m a plant cell. Ho11 man)membrane b o u n H u i ~ must tile mulcculeCW 111 t u mt J\f inlo tbc tmslJ ix of an l i,ochcmdrion of nn nttj:u.:ent nun-greennlinc productionc. A111hocyan in productiond. alhmo e e l o r s

G l t > ~ : o l "aoning n:lcro ttl the inerense inalmCcoes)

M M {B) Rocc(C) 1'owalo(D) o b a c ~ oColnntn II (Bin logi""l systems)

14 I

(i) Antl10cyonin hiosynthe


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24

l

2(i.

27.

Cb )

(o)

Seoondl) . w is the of the TI>NA in the Ti-plasmid olAg.robtt d


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6

7.

s,

9.

10.

The basls for the b l o c k i ~ c t i o n or thoalkaloid colchicine on cell divisi(ln"'n, tel bJnck ;wm )l'ifJme n s : ~ hh. to >lock duught m o ~ < o r n o n l < ) f d tromosouL.-,;Which of the folluwing lMcments abo ut acell a n ~ l l c nul II uc?u. .\n organelle IS ony sub-cellular o n l i l ~that catlllyZL'l requi,ita chemicalrca.::lionsh. Au urgonellc ench.t ond ~ c p a r ospecific from r e ~ t nf the

cytopl:.smc. An org:mc lle any ub-celhJ:.r entil)that t on be isulated by n t r i f u g a l l u n at

high .\ptors\ n t c w r c ~ u h i n g from

m b i c m uf twu E$ohTichirt Coli I>n


12/15

17.

s p e o a ~ C 1\mclion in m i ~ : : r o b i o l melllboli.smILted in t'olllllln H.Coluuut 1( ) p-JJrninobcMoic od.t(ii) l'antoth11ic 3ctd(iii) Vitamin 81:(iv) Zn"(V) C ~Colwnn 3A. P n : : " u r ~ o r uf lctrahydrofulic acid.cocu.tymc involved in trousfer of Qnc

~ r b o ~ t units.B. C o ~ t i t u e of ll1iantinc pymphosphntctha t is lhc l l " > H i b ~ t i o grnup ofdecarboxylase nnd trnsketoln.es,C Present m oy toclrome oxtdase.D. l ' o c c u r ~ O I o f N D and N DP' 11h.ich

:ore COCIIZ) O ' nf 111:011)c)chydrlll o:nascs.a Involved in re:rr18cment reaction (g, l u t m t mutu.se)F. lnvolvcxl ' v;1n0l.s s p o r t(lroCinsthroe 1\Jnctiona) e m e n t ~ . 3UIOrnOU't'tlt>hcattin -scquene.:,;. ccnti'Onlc iC undIt :;in"" hosl .xlls do not cn:t.vmc>that c:tn copy 'RNA into RNA_ the

RNA 1intseS must encode an R.'IA -dependent lt.NA rl)'"erase ando1' theirmullipHcatioo.

Photolilhotrophs diller li'Qmp f l o t o o r g ~ n o t r o p b in IJIJit Llle clc.:troudonol ncd by arc - - 'd. Wbc,, rodtl" n in Pig,


13/15

21

K6a. If these o.n:: l r e a t ~ d tl1 EcoRIe n d ( ~ t u c c a s e (Which OlliS tltcse pJasmidsat cmc sitf ligurc s h t ) can resuil

dunug rccombmntion usmg llolhda)nlOdd ot recombuuuion(J)

b. If th' dim mer (Fig. K6a) ''LIS maJe ofmtcrlockcd plasmid d rclcs or i at weren twisted double lcng.lh circle. whalIYPI. of Kln iClll fC \ l l ~ l be rnrmw ' 'l\lcaring it with EcoRTI7

{ I )c. l low '' recombauutiou ur plasmids bepre\ ~ t l c d iu tb" E.. Coli bosr1

( I)

~ ~(u) Write l l c ~ \ n the two key r e u c t c ~ l s

specil\c tu lb glyoxalnte cvele\vlneh ' tltili:ted h)mJ('roof'.;.::tnasms gruwmg on 2curuon substrate. n c e t i ~ : ucid. as thelOn. why is 11tntpurtontto food gluCSC Sl1rrdn ofC O I ) n ~ i > l l c ~ < ' i u m glummicum\\ hich make thtluc.i


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J.

-1.

6

7.

8.

9.

d Lyelli hUman mole IV3S found lO hovo ittgJcBarr body . Whl is d1e sex ehrflmusumnlC't)nslilwion nfthis md iv1dun l" ;'111diJ1erent lllgnanQy ~ ~ l i o n in hu.monsa. Testosteroneh. 1eutenising hvm,Nlcc: Chorion ic gon:odolropind. PrugcslernncMul"" < isinvolved in \TP h)droly6is dll inl a r contraction

n. .\ clinb. Myosinc. D ~ s t r o p l o i nd. l'ubulinWhich of he following is lmng o s ~ mu Lcpido$ ircnh. HlppocampiJS1;. Pluurnc:mthll$d. Cyp1nus


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17 A family tree constructed U>ingp l l ~ iogenetic : ~ S s i c m i o n i ealled

19.

20.

21

11 dendrogramh. o g r ~ mc. hologramd. cladogr.nnl'he honnone responsible for reduolion ofurine sccrctiun b hum:ln lo idncv e . i s io-.)tocinc. 'Epin"J'Iu-innd wha t "' Itsphysiological siJ Dillcanoo'l(2)

Name Ute ce lls requtred lo gene>';l tebybndoma for tlur production ofmonoclonal ootibodics. llow is tltchybndoma se lected'/ Wht 1S theprinciple 1nvolved tn the selectiouofh) b1 idoma '/

(3)

gate life sciences 1997

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