Cell Mcq Collection Biology Grade Xi

NEET Biology: Medical Entrance Biology Questions and Answers Multiple Choice Questions on Nucleic Acid (DNA)

1. Who introduced the term ‘Nucleic Acid?’ a) Meisher b) Robert Brown c) Lipmann d) Altmann 2. Hereditary information is indicated by a) Sequence of nucleic acids b) Position of nucleic acid c) Number of nucleic acid d) All of these 3. The strongest eidence that !NA is the genetic material comes from a) The finding NA is not present in the c!toplasm b) The fact that chromosome are made of NA c) Studies of Bacterial transformation d) The "nowledge that NA is present in the nucleus ". Who among the follo#ing scientists deelo$ed cytochemical techni%ue for the detection of !NA? a) #eulgen and Rossenbec" b) $atson and %ric" c) Beadle and Tatum d) &noll and Rus"a &. Which of the follo#ing scientists demonstrated that !NA A'T and (')? a) 'riffth b) Meselson and Stahl c) (ershe! and %hase d) %hargaff  *. Which ratio is constant for !NA !NA? ? a) A' * T% b) A  T * ' % c) A %* +' d) A +* %' +. The dye inoled in ,eulgen reaction to stain !NA is a) ,anus green B b) Basic #uchsin c) Neutral Red d) (aemo-!lin -. f 3/0 of an organism’s !NA is thymine then a) ./0 guanine b) 1/0 is guanine c) 2/0 adenine d) both b and c

. Hydrogen bonds bet#een cytosine and guanine are a) 3 b) 1 c) 2 d) 4 3/5 Nucleotide arrangement in !NA can be seen by a) Light microscope b) 6lectron microscope c) 78Ra! cr!stallograph! cr!stallograph! d) +ltracentrifuge

Ans#ers 35 d) Altmann 15 a) Sequence of nucleic acids 25 c) Studies of Bacterial transformation 45 a) #eulgen and Rossenbec" 95 d) %hargaff  :5 a) A' * T% .5 b) Basic #uchsin ;5 d) both b and c n some ?iruses and some pro"ar!otes c) >n some ?iruses and some pro"ar!otes and rarel! in eu"ar!otes d) @nl! in some ?iruses 2. NA is a) Single stranded b) ouble stranded c) Triple stranded d) Both a and b 3. The sugar in NA is a) eo-!ribose b) Ribose c) (e-ose d) #ructose ". Nucleotides in NA are 4oined by a) 29 phosphodiester bond b) 24 phosphodiester bond c) 21 phosphodiester bond d) 2: phosphodiester bond &. Thymine in !NA is re$laced by a) 'uanine in RNA b) Adenine in RNA c) %!tosine in RNA d) +racil in RNA *. The most abundant ty$e of RNA in the cell is a) rRNA b) mRNA c) tRNA d) hnRNA +. Which of the follo#ing NA seres as ada$tor molecule during $rotein synthesis a) rRNA b) mRNA c) tRNA d) hnRNA -. rNA is synthesised in a) nucleus b) %!toplasm c) R6R d) Nucleolus . c!NA is a) complementar! to mRNA b) complementar! to rRNA c) complementar! to tRNA d) complementar! to hnRNA 1/. Amino acids are attached to the a) acceptor arm of tRNA b) anti8codon arm of tRNA c) codon arm of tRNA d) none of these

11. ibo5ymes are a) en!mes with catal!tic acti?it! b) RNAs with catal!tic acti?it! c) proteins with catal!tic acti?it! d) nucleic acids with catal!tic acti?it! 12. NA is $rimarily seen in a) nucleus b) %!toplasm c) R6R d) S6R 13. ibose sugar in NA NA is  is a) 8ribose b) L8ribose c) Both L and  form d) None of these 1"5 1"5 Which of the irus has double stranded NA as genetic material? a) Tobacco mosaic ?irus b) >nfluena ?irus c) Rous Sarcoma ?irus d) Reo?iruses 1&. ibosomes are com$osed of  a) NA and RNA b) RNA and proteins c) NA and Proteins d) RNA onl! Ans#ers 16d 26a *6a +6c 116b 126b

36b -6d 136a

"6a 6a 1"6d

&6d 1/6a 1&6b

MCQ on Cytology - Cell and Cell organelles

1. The term cell cell #as  #as coined by a7 8ch#ann b) Robert (oo"e c) de Bar! d) Tatum 2. )ell theory #as $ro$osed by a) Beadle and Tatum Tatum b) Robert (oo"e c) Schleiden and Schwann d) Leenuwenhoec" 3. The cell theory is not a$$licable to a) Bacteria b) algae c) =irus d) fungi ". 8emiautonomous organelle in the cell is a) Pero-isomes b) %hloroplast c) 6ndoplasmic reticulam d) 'olgibodies &. The membrane around the  vacuole is called a) c!toplast b) tonoplast c) am!loplast d) elaioplast *. dentify the non 6membraneous organelle from the follo#ing a) Ribosome b) 6ndoplasmic reticulam c) Nucleus

d) %hloroplast +. 9icrofilaments  are com$osed mainly of a $rotein called a) actin b)tubulin c) m!osin d) chitin -. :;$eriments demonstrating the im$ortance of the nucleus in controlling the gro#th of the cell #as $erformed in a) Starfish b) Acetabularia c) Neurospora d) Leucoc!tes . Which of the follo#ing is associated #ith the structure of (olgicom$le; (olgicom$le;? ? a) %ristae b) %isternae c) Annuli d) Cuatasomes 1/. The subunit of $ron certain plantsD tertiar! cell wall is also present which has -!lan beside cellulose d) Middle lamella is made up of pectin and lignin Ans#ers> 35 b) BacteriaD fungi and plants 15 d) N8acet!l glucosamineD N8acet!l muramic acid and amino acids 25 d) %ell was is semi8permeable 45 a) %elluloseD hemicelluloses and pectin 95 d) #ungi :5 c) Ruthenium red .5 c) 尾 384 lin"age ;5 a) %ellulose d) Anaphase >> *. 8yna$sis 8yna$sis occurs  occurs bet#een a) mRNA and ribosomes b) Spindle fibres and cetromere c) a male and a female gamete d) Two homologous chromosomes +. n 9eiosis the daughter cells differ from $arent cell as #ell as amongst themseles due to a) SegregationD independent assortment and crossing o?er b) Segregation and crossing o?er c) >ndependent assortment and crossing o?er d) Segregation and independent assortment

-. uring -. uring which stage of prophase > of the crossing o?er ta"es o?er ta"es place K a) Leptotene b) Pach!tene c) J!gotene d) iplotene .聽 .聽  )ontinuous ariations are attributed to a) Pol!ploid! b)聽 b)聽 Mutation c) %rossing o?er d) %hromosomal aberrations 聽 1/. 聽 When $arental and maternal chromosomes change their materials #ith each other in cell division this eent called a) s!napsis b) %rossing o?er c) !ad forming f orming d) Bi?alent forming Ans#ers 1. d) Genetic recombination are ossible "rom #eneration to #eneration $. d) reroducti%e reroducti%e cells &. b) Searation o" chromatids 4. d) Searation o" chromatids '. c) Anahase ( . d) T*o homolo#ous chromosomes +. a) Se#re#ation, indeendent assortment and crossin# o%er . b) Pachytene . c) %rossing o?er  1/. b) Crossin# o%er  Multiple Choice Questions on Cell Cycle

1. !NA re$lication occurs in a) S phase b) ' phase c) '1 phase d) M phase 2. The $airing of homologous chromosomes a) Tetrads b) %rossing o?er  c) S!napsis d) Terminalisat Terminalisation ion 3. Which as$ect of mitosis is affected by colchicine in inducing $oly$loidy? a) NA duplication b) Spindle formation c) %ell plate formation d) %hromosome doubling ". =airing of homologous chromosomes can be seen during a) J!gotene b) leptotene c) iplotene d) Pach!tene &. The cell cycle of cycle of a germinal cell has a) two successi?e mitotic di?isions b) two successi?e reduction di?isions c) ?er! short prophase in first di?ision d)聽 d)聽 one reduction di?ision followed b! one mitotic di?ision *. !uring !uring cell diision diision sometime sometimes s there there #ill be failure failure of se$arati se$aration on of sister  sister  chromatids. This eent is called a) interference b) coincidence

c) fusion d) Non disEunction +. n the cell cycle !NA synthesis ta is P .// and %hl a is predominant pigment b) The reaction centre of PS >> is P:;/ and %hl b is predominant pigment c) Both photos!stems are located on the outer membrane d) PS> is located on the th!la"oid membrane 1*. Which of the follo#ing statements are incorrect regarding light reaction a) l>ght reaction is called as (ill reaction b) light reaction ta"es place in the grana of the chloroplast c) %@1 fi-ation to carboh!drate is the maEor e?ent in light reaction d) ATP and NAP( are produced in light reaction 1+. All $lastids hae similar structure because they can a) store starchD lipids and proteins b) gets transformed from one t!pe to another  c) be present together  d) perform some function 1-. All ty$es of $lastids $ossess essentially the same structure because they a) perform the same function b) occur in aerial parts c) store food materials li"e starchD fats and protein d) can transform from one form to another  1. )hloro$hyll in %hloroplast is located in a) grana b) stroma c) th!la"oids d) both grana and stroma 2/. )hloro$hyll consists of a) .90 chloroph!ll a and 190 chloroph!ll b b) .90 chloroph!ll b and 190 chloroph!ll a c) :/0 chloroph!ll a and 4/0 chloroph!ll b d) 3//0 chloroph!ll a

Ans#ers 335 c) %hloroplast 315 a) chloroph!ll a 325 b) th!la"oid membrane 345 c) carotenoids 395 c) Both photos!stems are located on the outer membrane 3:5 c) %@1 fi-ation to carboh!drate is the maEor e?ent in light reaction 3.5 b) gets transformed from one t!pe to another  3;5 d) can transform from one form to another  3