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NEET REVISION SERIES CELL- THE UNIT OF LIFE Revise Most Important Questions to Crack NEET 2020 Download Doubtnut Now Q-1 - 13842034 Match column I with column II and selecrt the correct option from the codes given below. (A) A-(i), B-(iii), C-(iv), (D-(ii) (B) A-(i), B-(iii), C-(ii), D-(iv) (C) A-(iii), B-(i), C-(iv), D-(ii) (D) A-(i), B-(iv), C-(ii), D-(iii) Column I Column II A. Leeuwenhoke (i ) First saw and described a livi B. Robert Brown (ii ) Presence of cell wall is unique to C . Schleiden (iii ) Discovered the nucleus D. Schwann (iv) All plants are composed of different

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Page 1: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

NEETREVISIONSERIES

CELL-THEUNITOFLIFE

ReviseMostImportantQuestionstoCrackNEET2020

DownloadDoubtnutNow

Q-1-13842034

Match column I with column II and selecrt the correct option from

the codes given below.

(A)A-(i),B-(iii),C-(iv),(D-(ii)

(B)A-(i),B-(iii),C-(ii),D-(iv)

(C)A-(iii),B-(i),C-(iv),D-(ii)

(D)A-(i),B-(iv),C-(ii),D-(iii)

ColumnI ColumnIIA. Leeuwenhoke (i) Firstsawanddescribedalivingcell

B. RobertBrown (ii) Presenceofcellwallisuniquetoplantcells

C. Schleiden (iii) Discoveredthenucleus

D. Schwann (iv) Allplantsarecomposedofdifferentkindsofcell

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CORRECTANSWER:A

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Q-2-16189760

Which one is the largest unicellular organism

(A)Planaria

(B)Volvax

(C)Bluegreenalgae

(D)Yeast

CORRECTANSWER:D

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Q-3-23779910

Study of cell structure under microscope is

Page 3: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(A)Cytology

(B)CellBiology

(C)Cytochemistry

(D)Microanatomy

CORRECTANSWER:A

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Q-4-13842039

________ are self replicating, extra chromosomal segments of

double stranded circular and naked DNA, present in a bacterial cell.

(A)Plasmids

(B)Nucleoid

(C)Mesosomes

Page 4: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(D)Bacteriophages

CORRECTANSWER:A

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Q-5-16189743

T. Schwann and M. Schleiden were

(A)Dutchbiologists

(B)Englishbiologists

(C)Austrainbiologists

(D)Germanbiologists

CORRECTANSWER:D

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Q-6-23779961

Page 5: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

Who proposed for the first time that cells are totipotent ?

(A)White

(B)Haberlandt

(C)Steward

(D)HalperinandWetherell

CORRECTANSWER:B

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Q-7-13842048

The type of ribosomes found in prokaryotes is

(A)80Stype

(B)70Stype

(C)30Stype

Page 6: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(D)50Stype

CORRECTANSWER:B

SOLUTION:

Thjecytoplasmicribosomesofprokaryotes(bluegreen

algae,bacteriaandPPLOs)are70S.Theyhavetwo

subunits50Sand30S.

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Q-8-24359724

Number of membrane(s) seperating intrathylakoid space from

cytoplasm is

(A)4

(B)3

(C)2

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(D)1

CORRECTANSWER:B

SOLUTION:

Numberofmembrancesseperatingintrathylakoidspace

(lumen)fromcytoplasmare3.

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Q-9-16189795

Desmosomes are concerned with

(A)Celldivision

(B)Cellularexcreation

(C)Cytolysis

(D)Celladherence

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CORRECTANSWER:D

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Q-10-13842031

The figures of cork cells as seen by Robert Hooke were published in

the book

(A)Originofspecies

(B)Speciesplantarum

(C)Generaplantrum

(D)Micrographia.

CORRECTANSWER:D

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Q-11-16189744

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Who proposed the theory that "cells arise only from the pre-existing

cells"

(A)Mohl

(B)Virchow

(C)Hacekel

(D)Brown

CORRECTANSWER:B

SOLUTION:

Virchowgave'Omniscellulaacellula'theory.

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Q-12-13842029

The most likely method, used to determine the structural details of a

Page 10: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

cell organelle is

(A)autoradiography

(B)microdissection

(C)electronmicroscopy

(D)phasecontrastmicroscopy.

CORRECTANSWER:C

SOLUTION:

Electronmicroscopeisthebestdevicetodetermine

thwestructuraldetailsofacell.Ifcanmagnifyobjects

upto250,000-400,000times.Itsresolvingpoweris

1000timesmorethanthelightmicroscope.This

resolutionisbecauseoflowwavelength of

electronbeamusedaslightsource.Electronmicroscope

iosmadeupofelectromagneticlenses.Thebeamof

(0.005nm)

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el,ectronsisfocussedontheobjectswiththehelpofa

condenserlensandamagnifiedimageisfurther

magnifiedbyaprojectorlensandfinalimageis

producedonfluorescentscreen.

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Q-13-23779924

Who proposed the "Cell theory"

(A)Schwann

(B)Schleiden

(C)Swanson

(D)Jenssen

CORRECTANSWER:B

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Q-14-16189735

Pure fractions of cellular components can be isolated by

(A)Chromatography

(B)Scanningelectronmicroscopy

(C)X-raydiffraction

(D)Differentialcentrifugation

CORRECTANSWER:D

SOLUTION:

Differentialcentrifugation:Itisamechanicalsepartionof

individualsubcelluarcomponentfromhomogenatein

centrifugeatdifferentlowspeeds.Large/heavy/denser

particlessettledownfirstatlowerspeedswhilethe

lighter/smaller/lessdenserparticlesdosoathigher

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speedsincentrifuge.

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Q-15-13842051

Polyribosomes are aggregation of

(A)ribosomesandrRNA

(B)peroxisomes

(C)severalribosomesheldtogetherbyastringofmRNA

(D)rRNA.

CORRECTANSWER:C

SOLUTION:

Ribosomesmayoccursinglyasmonosomesorin

rosettesandhelicalgroupscalledpolyribosomes.The

Page 14: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

differentribosomesareformedduringperiodsofactive

proteinsynthesiswhenanumberofcopiesofthesame

polypeptidearerequired.

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Q-16-23779980

Functionally important dead cells are

(A)Corkcells

(B)Trachearyelements

(C)BothAandB

(D)Endothelialcells

CORRECTANSWER:C

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Q-17-13842221

Amitosis usually occurs in

(A)eukaryoticcells

(B)prokaryoticcells

(C)meristems

(D)sporemothercells.

CORRECTANSWER:B

SOLUTION:

Amitosisisamethodofdirectcelldivisioninwhichthe

nucleusdividesintotwodaughternucleiwithoutshowing

differentiationofchromosomesanddevelopmentof

spindle.Itiscommonlyseeninprokaryotes.

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Q-18-13842113

Which of the following represents the features of lysosomes ?

(A)AlowerpHthanthecytoplasm

(B)Redusedhydrolaseactivity

(C)Doublemembraneenvelope

(D)Allofthese

CORRECTANSWER:A

SOLUTION:

LysosomalenzymesfunctioninacidicmediumorpH

.ThispHislowerthanthatofcytoplasm.

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Q-19-23780028

4.5

Page 17: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

Protoplasm is a

(A)Emulsion

(B)Complexcolloidalsolution

(C)Molecularsolution

(D)Suspension

CORRECTANSWER:B

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Q-20-13842119

Which of the following statements regarding sphaerosomes is not

correct ?

(A)Abundantintheendospermcellsofoilseeds

(B)Boundedbyasinglemembrane

Page 18: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(C)Takepartinsynthesisandstorageoflipids

(D)Takepartinphotorespiration

CORRECTANSWER:D

SOLUTION:

Sphaerosomesaresmallcellorganellsboundedby

singlemembranewhichtakepartinstorageand

synthesisoflipids.Sphaerosomesoccurabundantlyin

theendospermcellsofoilseeds.Chloroplast,

peroxisomeandmitochondriatakepartin

photorespiration.

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Q-21-13842111

Lysosomes are the reservoirs (store houses) of

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(A)hydrolyticenzymes

(B)oxidativeenzymes

(C)secretoryglycoproteins

(D)RNAandproteins.

CORRECTANSWER:A

SOLUTION:

Lysosomesstorethehydrolysingenzymesofthecell.

Theimportantenzymesareacidphosphatases,

sulphatasesproteases,peptidases,nucleases,lipases

andglycosidases.

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Q-22-16189738

Which of the following is the exception of cell theory

Page 20: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(A)Bacteria

(B)Fungi

(C)Lichen

(D)Virus

CORRECTANSWER:D

SOLUTION:

Virusesarenotapplicabletocelltheory.Theyaremade

upofproteinsandoneofnucleicacidsi.e.,DNAorRNA.

Sotheylackprotoplasm,theessentialpartofthecell.

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Q-23-23779955

Cells which lose their nucleus during differentiation are

Page 21: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(A)Nervecells

(B)Musclecells

(C)Erthrocytes

(D)Leucocytes

CORRECTANSWER:C

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Q-24-13842084

Continuity of cytoplasm from cell is maintained through

cytoplasmic connection in plants called

(A)ER

(B)tightjunction

(C)gapjunction

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(D)plasmodesmata.

CORRECTANSWER:D

SOLUTION:

Plasmodesmataarecytoplasmicbridgesbetween

adjacentplantcellswhichdevelopinminuteporesof

theirwalls.Theyformaprotoplasmiccontinuumcalled

symplast.Itprovideschannelsforcontrolledpassageof

smallsizedparticlesbetweenadjacentcellsaswellas

transferofsomespecificsignals.

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Q-25-16189761

Smallest known cell is

(A)Acetabularia

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(B)Nostoc

(C)Chlamydomonas

(D)Pleuropneumonialikeorganism

CORRECTANSWER:D

SOLUTION:

Pleuro-pneumonialikeorganism(PPLO),Mycoplasma

gallisepticumishavinganaveragesizeof .

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Q-26-23780020

70S type of ribosome shows two units whose sedimentation

constants are

" " Or

Sub unit in prokaryotic ribosome is

0.150μ

Page 24: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(A)Sedimentationcoefficient

(B)Solubility

(C)Surfacearea

(D)Size

CORRECTANSWER:A

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Q-27-13842073

Who gave the lamellar or sandwich model of cell membrane ?

(A)SingerandNicolson

(B)DanielliandDavson

(C)J.Robertson

(D)Noneofthese

Page 25: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

CORRECTANSWER:B

SOLUTION:

In1935,DanielliandDavsonproposedthatcell

membraneismadeofadoublelayerofphospholipid

moleculessandwichedbetweentwosinglelayersof

proteins.Thethreelayersareheldtogetherby

electrostaticforceswhilephospholipidlayersarekept

adheredbyvanderWaal'sforces.

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Q-28-16189736

Scientists were able to pinpoint the location of colour processing

centres in the visual cortex of the brain by means of

(A)PET

Page 26: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(B)NMR

(C)CT

(D)X-ray

CORRECTANSWER:A

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Q-29-23779936

Distinction of individual cells is absent in coenocytic organism

(A)Ultothrix

(B)Volvox

(C)Eshcerichia

(D)Rhizopus

CORRECTANSWER:D

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Q-30-13842033

Omnis cellula-e cellula' i.e., new cells arise from prexisting cells ,

this statement was given by

(A)SchleidenandSchwann

(B)RudolfVirchow

(C)RobertBrown

(D)RobertHooke.

CORRECTANSWER:B

SOLUTION:

RudolfVirchowmodifiedthecelltheoryandgavethe

conceptof'omniscellula-ecellula'-meansnewcells

developbydivisionofthepre-existingcells.Thisis

Page 28: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

calledtheoryofcelllineageorcommonancestry.

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Q-31-23780001

The term protoplasm was coined by

(A)Corti

(B)Dujardin

(C)Purkinje

(D)Dutrochet

CORRECTANSWER:C

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Q-32-13842124

In which of the following parts of mitochondria succinic

Page 29: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

dehydrogenase enzyme is located ?

(A)Perimitochondrialspace

(B)Outermembrane

(C)Matrix

(D)Innermembrane

CORRECTANSWER:D

SOLUTION:

Succinatedehydrogenaseisanenzymecomplex

involvedinTCAcycle,locatedininnermitochondrial

membrane.

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Q-33-16189751

Page 30: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

Which one of the following pairs is not correctly matched

(A)Cristae""The"Shelves"formedbythefoldingofthe

innermembraneofthemitochondrion

(B)Plasmodesmata""Themembranesurroundingthe

vacuoleinplants

(C)Grann""Membranebounddiscsinchloroplaststhat

containchlorophyllsandcarrotenoids

(D)Middlelamella""Layerbetweenadjacentcellwalls

inplantsderivedfromcellplate

CORRECTANSWER:B

SOLUTION:

Becausethemembranewhichsurroundsthevacuoleis

knownastonoplast.

Page 31: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

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Q-34-13842055

According to unit membrane structure, the thickness of plasma

membrane is about

(A)

(B)

(C)

(D)

CORRECTANSWER:C

SOLUTION:

AccordingtoRobertson'sconceptofunitmembrane,the

cellmembraneistrilaminar.Ithasathicknessofabout

withacentrallipidlayerof thcikandtwo

35 �

20 �

75 �

100 �

75 35

Page 32: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

peripheralproteinlayersof each.

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Q-35-16189768

Middle lamella is made up of

(A)Cellulose

(B)Suberin

(C)Calciumandmagnesiumpectate

(D)Lignin

CORRECTANSWER:C

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Q-36-23779925

The living substance of cell was named sarcode by

20

Page 33: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(A)Corti

(B)Dujardin

(C)Lamarck

(D)Dutrochet

CORRECTANSWER:B

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Q-37-13842043

Glycocalyx (mucilage sheath) of a bacterial cell may occur in the

form of a loose sheath called _________ or it may be thick and

tough called ________.

(A)capsule,slimelayer

(B)slimelayer,capsule

Page 34: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

(C)mesosome,capsule

(D)mesosome,slimelayer

CORRECTANSWER:B

SOLUTION:

Glycocalyx(mucilagesheath)istheoutermostlayerof

thebacterialwithcellenvelopewhichconsistsofnon-

cellulosicpolysaccharideswithorwithoutproteins.It

mayoccurinthefromofloosesheath,calledslimelayer.

Ifitisathickcovering,itiscalledcapsule.Glycocalyx

givesstickycharactertothecellandisnotabsolutely

essentialforsurvivalofbacteria.Itandvirusesand

servesinattachment.Itmaygiveselectiveadvantage

thoughincertainsituations.

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Page 35: Match column I with column II and selecrt the correct option from · 2020. 1. 7. · Viruses are not applicable to cell theory. They are made up of proteins and one of nucleic acids

Q-38-23779944

Who proposed protoplasmic theory as opposed cell theory ?

(A)Virchow

(B)Schultze

(C)Sachs

(D)Strasburger

CORRECTANSWER:B

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Q-39-23779960

Morphogenesis in tissue culture was discovered by

(A)Gautheret

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(B)SkoogandMiller

(C)Muiretal

(D)Stewardetal

CORRECTANSWER:B

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Q-40-13842045

Mesosomes are the infoldings of cell membrane, which

(i) are present in both prokaryotic and equkaryotic cells.

(ii) help in cell wall formation, DNA replication and respiration.

(iii) increase the surface area of plasma membrane.

(A)(i)and(ii)

(B)(ii)and(iii)

(C)(i)and(iii)

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(D)(i),(ii)and(iii)

CORRECTANSWER:B

SOLUTION:

Mesosmesarepresentonlyinprokaryotes.

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Q-41-16189770

The internal layer joining the primary walls of the two adjacent cells

is known as

" " Or

The possibility of being outermost layer of cell is highest for which

of the following

(A)Plasmodesmata

(B)Middlelamella

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(C)Periderm

(D)Casparianstrip

CORRECTANSWER:B

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Q-42-24359732

particles occur in

(A)Mitochondria

(B)Chloroplasts

(C)Ribosomes

(D)Roughendoplasmicreticulum

CORRECTANSWER:A

SOLUTION:

F1

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particlesoccurinmitochondria.

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Q-43-13842066

Cell recognition and adhesion are facilitated by components of

plasma membrane. These components are generally

(A)proteinmoleculesalone

(B)lipidsalone

(C)bothlipidsandproteins

(D)glycolipidsandglycoproteins.

CORRECTANSWER:D

SOLUTION:

Prooteinshaveveryspecificshapeswhichmakethem

F1

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idealasrececptormoleculesforchemicalsignalling

betweencells.Branchingsidechainglycolipidsonthe

outersurfaceofcellmembranesarealsoinvolvedin

cell-cellrecognition.

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Q-44-23779976

During defferentiation , RBCs lose

(A)Aerobicrespiration

(B)DNAreplication

(C)RNAsynthesis

(D)Alltheabove

CORRECTANSWER:D

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Q-45-16189808

Bulk drinking of fluid by cells is termed as

" " Or

The process of sucking of fluid from the cell surface is called

(A)Phagocytosis

(B)Pinocytosis

(C)Cyclosis

(D)Osmosis

CORRECTANSWER:B

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Q-46-13842062

Lipids are arranged within the membrane with

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(A)polarheadstowardsinnersideandthehydrophobic

talistowardouterside

(B)bothheadsandtailstowardouterside

(C)headstowardoutersideandtailtowardsinside

(D)bothheadsandtailstowardsinnerside.

CORRECTANSWER:C

SOLUTION:

Inlipidbilayer,lipidsarearrangedwiththepolarhead

towardstheoutersideandthehydrophobic/non-polar

tailstowardstheinnerside.

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Q-47-23779967

Embryoids are

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(A)Somaticembryo-likestructures

(B)Smallembryosthroughfertilisationinculture

(C)EarlyembryhostagesusedforPropagationintissue

culture

(D)Alltheabove

CORRECTANSWER:A

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Q-48-16189771

The strength and rigidity of a cell wall is due to the substance

known as

(A)Suberin

(B)Cellulose

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(C)Lignin

(D)Pectin

CORRECTANSWER:C

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Q-49-23779941

A nucleus is absent in the mature

(A)Sievetubecells

(B)Mammalianerythrocytes

(C)Monocytes

(D)BothAandB

CORRECTANSWER:D

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Q-50-13842057

The best material for the study of structure of cell membrane is

(A)RBCofhuman

(B)livercell

(C)kidneycell

(D)musclecell.

CORRECTANSWER:A

SOLUTION:

RBCslacknucleusandmayothercellorganellesthus

theyarebestsuitedtostudycellmembranewithoutany

complication.

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Q-51-23779929

Micrographia was written by

(A)Grew

(B)Hooke

(C)Brown

(D)Lamarck

CORRECTANSWER:B

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Q-52-13842132

Which of the following is the correct match ?

(A)Amyloplasts-Storecarbohhydrates

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(B)Elaioplasts-Storefastandoils

(C)Aleuroplasts-Storeproteins

(D)Allofthese

CORRECTANSWER:D

SOLUTION:

Leucoplastsarecolourlessplastidswhichgenerally

occurnewarthenucleusinthenon-greencellsand

possessinternallamellae.Therearethreetypesof

specialleucoplasts:

(i)amyloplastswhicharestarchcontainingleucoplasts,

e.g.,potatotuber.(ii)elaioplastsorlipidoplastsor

oleoplastswhicharecolourlessplastidsandstorelipids

e.g.,tuberose.(iii)aleuroplastsorproteoplastsor

proteinoplastswhichareproteinstoringplastids,e.g.,

aleuronecellsofmaizegrain,endospermcellsofcastor.

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Q-53-16189805

Which one of the following is not a constituent of cell membrane

(A)Cholesterol

(B)Glycolipids

(C)Proline

(D)Phospholipids

CORRECTANSWER:C

SOLUTION:

Prolineisasecondaryaminoacidwhichisnotfoundin

plasmamembrane.

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Q-54-13842064

The most abundant lipid in the cell membrane is

(A)cutin

(B)glycolipid

(C)steroid

(D)phosphoglycerides.

CORRECTANSWER:D

SOLUTION:

Thelipidcomponentofthecellmembranemainly

consistsofphosphoglycerides.

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Q-55-16189772

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The most abundant substance of middle lamella is

(A)Suberin

(B)Cutin

(C)Lignin

(D)Pectin

CORRECTANSWER:D

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Q-56-16819765

[a=log12,b=log21,c=log11 and d=log22 then log((1)/(7)) can be

expr P(a-b)+Q(c-d) where P and Q are integers then the value of

(7P-Q) equals [ (A) 5, (D) 15]]

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Q-57-13842065

Which of the best way to separate intact chloroplast from green

leaves of angiospermic plant ?

(A)Petrol-ether

(B)Chloroform

(C)10%sucrosesolution

(D)Alcohol

CORRECTANSWER:D

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Q-58-23779943

A tissue having more non-living material than the living matter is

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(A)Epithelialtissue

(B)Parenchyma

(C)Connectivetissue

(D)Nervoussystem

CORRECTANSWER:C

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Q-59-16189755

The size of most of the cells is best expressed in

(A)�

(B)Milimeters(mm)

(C)Nanometers(nm)

(D)Micrometers(μm)

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CORRECTANSWER:D

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Q-60-13842071

According to the modern concept, cell membrane is

(A)solid

(B)quasifluid

(C)fluid

(D)solidifiedsheath.

CORRECTANSWER:B

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Q-61-23779974

Differentiated cells are

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(A)Premitoticspecialised

(B)Post-mitoticspecialised

(C)Premeiotic-specialised

(D)Post-meioticspecialised

CORRECTANSWER:B

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Q-62-13842109

Which one of the mis-matched pair ?

(A)Largestisolated,singlecell-Eggofanostrich

(B)Golgiapparatus-DiscoveredbyAltman

(C)Mitochondria-NamewasgivenbyBenda

(D)Lysosomes-DiscoveredbydeDuve

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CORRECTANSWER:B

SOLUTION:

GolgiapparatuswasdiscoveredbyCamilloGolginerve

cellsofbarnowlandcat.

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Q-63-24359704

Lysosomal enzymes are active at pH

(A)5

(B)7

(C)8

(D)Variable

CORRECTANSWER:A

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SOLUTION:

LysosomeenzymesareactiveatacidicpH(lessthan7).

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Q-64-13842098

Which of the following cell organelles are named after the name of

its discoverer ?

(A)ER

(B)DNA

(C)Golgibodies

(D)Mitochondria

CORRECTANSWER:C

SOLUTION:

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CamilloGolgifirstrecognisedthedenselystained

reticularstructuresnearthenucleusin1898.These

werelaternamedGolgibodiesafterhim.

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Q-65-16189781

The chemical substances found most abundantly in the middle

lamella is released into the phragmoplast by

(A)Endoplasmicreticulum

(B)Golgicomplex

(C)Spindlefragments

(D)Interzonalfibres

CORRECTANSWER:B

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Q-66-23780063

New cells have

(A)Bacterialfermentation

(B)Regenerationofoldcells

(C)Pre-existingcells

(D)Abioticmaterial

CORRECTANSWER:C

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Q-67-13842093

Mechanical support, enzyme circulation, protein synthesis and

detoxification of durgus are the function of

(A)dictyosomes

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(B)chloroplast

(C)ribosomes

(D)ER.

CORRECTANSWER:D

SOLUTION:

ERfunctionascytoskeletonorskeletalframeworkby

providingmechanicalsupporttocolloidalcytoplasmic

matrix.Itconductsinformationfromcelltocell.RER

helpsinproteinsynthesis.SERtakespartin

detoxificationoftoxicchemicalinliver.

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Q-68-16189775

Identify the polysaccharide with -glycosidic bondsβ

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(A)Starch

(B)Glycogen

(C)Sucrose

(D)Cellulose

CORRECTANSWER:D

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Q-69-13842101

These are the densely stained reticular stuctures present near the

nucleus, consisting of many flat, disc shaped cistemae of

diameter. These are

(A)chloroplasts

(B)endoplasmicreticulum

0.5 − 1.0μm

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(C)mitochondria

(D)Golgiapparatus

CORRECTANSWER:D

SOLUTION:

CamilloGolgidiscoveredtheGolgiapparatusas

reticularstructure.Typically,itis in

diameterbutitsshapeandsizedependesuponthe

physiologicalstateofthecell.

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Q-70-16189787

Beet root if kept in cold water anthocyanin does not come out due

to plasma membrane

(A)Differentiallypermeable

0.5 − 1.0μm

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(B)Impermeabletoanthocyanis

(C)Permeabletoanthocyanins

(D)Dead

CORRECTANSWER:B

SOLUTION:

Anthocyaninpigmentcannotcomeoutsidedueto

impermeabilityofplasmamembrane.

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Q-71-23780042

Living beings are made up of cells. This was first stated by

(A)Lamarck

(B)VonHelmont

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(C)SchleidenandSachwann

(D)HugodeVires

CORRECTANSWER:B

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Q-72-13842096

Which organelle helps in the synthesis of lipids, chloesterol,

steroids and visual pigments in epithelial cells of retina ?

(A)Golgibodies

(B)RER

(C)SER

(D)Mitochondria

CORRECTANSWER:C

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Q-73-16189778

A protoplast is a cell

(A)Withoutnucleus

(B)Undergoingdivision

(C)Withoutcellwall

(D)Withoutplasmamembrane

CORRECTANSWER:C

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Q-74-23780056

Physical basis of life is

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(A)Nucleoplasm

(B)Cytoplasm

(C)Plasmalemma

(D)Protoplasm

CORRECTANSWER:D

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Q-75-13842104

Which of the these is not a function of Golgi apparatus ?

(A)Siteofsynthesisofglycoproteinsandglycolipids

(B)Secrection

(C)Membranetransformation

(D)Siteofproteinsynthesis

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CORRECTANSWER:D

SOLUTION:

TheGolgicomplexmodifies,sortsandpackages

proteinsandlipidscomingfromtheER.Packaging

involveswrappingthematerialbyamembrane,forming

secretoryvesicles.Siteofproteinsynthesisis

ribosomes.

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Q-76-16189779

What is the structural element of cell wall

(A)Matrix

(B)Microtubules

(C)Microfibrils

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(D)Arabinogalactans

CORRECTANSWER:D

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Q-77-13842106

Cells which are secretory in function have abundant

(A)lysosomes

(B)endoplasmicreticulum

(C)dictyosomes

(D)osteosomes.

CORRECTANSWER:C

SOLUTION:

Dictyosomeisacup-shapedstructureofflattened

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membranousvesiclesfoundinplantcell.Theymodify

proteinsfromtheER,andmayalsopolymerisesugarsto

polysaccharides.Theythenpackthesematerialsfor

deliverytodestinationswithinthecell,forsecretion,or

forstorage.

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Q-78-23780073

Who wrote the book ''Cells and Tissues'' and coined the term of

cytology

(A)RobertHooke

(B)Leeuwenhoek

(C)Hertwig

(D)Swammerdam

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CORRECTANSWER:C

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Q-79-16189794

The type of cell juction which facilitates cell to cell communication

is

(A)Tightjunction

(B)Adheringjunction

(C)Gapjunction

(D)Desmosomes

CORRECTANSWER:C

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