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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Cells which are not dividing are likely to be atA. G 1B. G 2C. G oD. S phase |
| Answer» Correct Answer - c | |
| 152. |
Cells which are not dividing are likely to be atA. `G_1`B. `G_2`C. `G_0`D. S phase |
| Answer» Correct Answer - d | |
| 153. |
Cells which are not dividing are likely to be atA. `G_(1)`B. `G_(2)`C. `G_(0)`D. S-phase |
| Answer» Correct Answer - C | |
| 154. |
Cells which are not dividing are likely to be atA. `G_(1)` phaseB. `G_(2)` stageC. `G_(0)`D. S phase. |
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Answer» Correct Answer - C Cells that do not divide further exit `G_(1)` phase to enter an inactive stage and called equiescent stage `(G_(0))` of the cell cycle. Cells in this stage remain metabolically active but no longer proliferate unless stinulated appropriate signal depending on the requirement of the organism. |
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| 155. |
The number of chromosomes in ` G_(1)` phase is 36, the number of chromosomes in S phase isA. 36B. 18C. 22D. 37 |
| Answer» Correct Answer - A | |
| 156. |
If the initial amount of DNA is 8, C then after S phase the amount of DNA would beA. 4 CB. 8 CC. 64 CD. 16 C |
| Answer» Correct Answer - D | |
| 157. |
If 46 chromosomes are present at `G_(1)` phase, then the number of chromosomes after S phase would beA. 23B. 92C. 47D. 46 |
| Answer» Correct Answer - A::D | |
| 158. |
A cell is destined to complete cell cycleA. When it enters post-mitolic phaseB. When it crosses retriction pointC. Only when it crosses `G_(0)` check pointD. When all check points are successfully crossed |
| Answer» Correct Answer - B | |
| 159. |
Identify the phase at which most organelles duplicatesA. M-phaseB. `G_(1)` phaseC. `G_(0)` phaseD. `G_(2)` phase |
| Answer» Correct Answer - B | |
| 160. |
If the initial amount of DNA is denoted by 2 C then the amount of DNA present after S phase will beA. 4 CB. 8 CC. 2 CD. 5 C |
| Answer» Correct Answer - A | |
| 161. |
Which of the following is incorrect ?A. The cells in `G_(1)` phase are metabolically activeB. The length of `G_(1)` phase remains constaint in different organismsC. Interphase is a period of intense growthD. Mitosis is the phase where actual cell division occurs |
| Answer» Correct Answer - A::B | |
| 162. |
Centrioles duplicate in theA. NucleusB. Endoplasmic reticulumC. CytoplasmD. Mitochondria |
| Answer» Correct Answer - A::C | |
| 163. |
Chromosomes duplicate during `underline (A)` and increase in number of chromosomes is observed first during `underline (B)` . Fill the blanks correctlyA. A- Interphase B - prophaseB. A - S-phase B - TelophaseC. A - Synthetic phase B - Gap 2 phaseD. A- Interphase B - Analphase |
| Answer» Correct Answer - D | |
| 164. |
Centrifugal cytoinesisA. Occurs in animalsB. Occurs by cell furrowingC. Occurs by cell plate formationD. Is characteristic of bacteria and lower plants only |
| Answer» Correct Answer - C | |
| 165. |
Which one of the following pairs is correctly matchedA. `{:("Anaphase I",-,"Homologous chromosomes are separated"):}`B. `{:("Metaphase I",-,"Pairing of maternal and paternal homologous chromosomes takes place"):}`C. `{:("Interphase",-,"A nuclear envelope encloses each haploid set of chromosomes"):}`D. `{:("Prophase I",-,"Non-homologous chromosomes are separated"):}` |
| Answer» Correct Answer - a | |
| 166. |
Which of the following is correctly matched ?A. Spireme stage - late prophaseB. Congresssion stage - MetaphaseC. Interzonal fibres formation - TelophaseD. Reappearance of ER and golgi bodies - Anaphase |
| Answer» Correct Answer - B | |
| 167. |
Which of the following proteinaceous components of the cell cytoplasm help in the initation of the assembly of mitotic spindle ?A. MicrotubulesB. MicrobodiesC. CentromeresD. Kinetochores |
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Answer» Correct Answer - A Microtubules the proteinanceous components of the cells cytoplasm help in the initiation of the assembly of mitotic spindle. |
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| 168. |
Which of the following duplicates in cytoplasm in S-phase ?A. ChromosomesB. CentriolesC. ChromaidD. DNA |
| Answer» Correct Answer - B | |
| 169. |
The sequence of events by which a cell duplicates its genome, synthesises the other consstituents of the cell and eventually divides into two daughter cells is calledA. cell divisionB. cell cycleC. cell synthesisD. cell lysis |
| Answer» Correct Answer - B | |
| 170. |
The sequence of events by which a cell duplicates its genome, synthesises the other consstituents of the cell and eventually divides into two daughter cells is calledA. Cell divisionB. Cell cycleC. KaryokinesisD. Cytokinesis |
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Answer» Correct Answer - B The sequence of event by which a cell duplicates is genome ,synthesis the other constituents of the cells and eventually divides into daughter cells is called cell cycle. |
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| 171. |
Centrioles are responsible for the formation ofA. spindle apparatus of a dividing cellB. brush border of a cellC. transduction of signals received from other cellD. synthesis of actin and myosin |
| Answer» Correct Answer - A | |
| 172. |
In which phase of meiosis are the following formed ? Choose the answers from hint points given below. (a) Synaptonemal complex ..... (b) Recombination nodules .... (c) Appearance/activation of enzyme recombinase.... (d) Termination of chiasmata.... (e) Interkinesis.... (f) formation of dyad of cells.... Hint (a) Zygotene, (b) Pachytene, (c) Pachytene, (d) Diakinesis, (e) After Telophase-I/before prophase of meosis-II, (f) Telophase-I/after meiosis-I |
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Answer» (a) Synaptonemal comples zygotene (b) Recombination nodules pachytene. (c) Appearance/activation of enzyme recombinase telophase-I/after, meiosis-I... (d) Termination of chiasmata diakinesis. (e) Interkinesis after telophase-I/before prophase of meiosis-II (f) Formation of dyad of cells pachytene. |
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| 173. |
Four phases of cell cycle areA. `G_(1) to S to G_(2) to M`B. `S to G_(1) to G_(2) to M`C. `G_(1) to G_(2) to S to M`D. `M to G_(1) to G_(2) to S` |
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Answer» Correct Answer - A Four phases of cell cycle are `G_(1) to S to G_(2) to M`. |
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| 174. |
The centrioles begins to move towards opposite poles of the cell inA. ProphaseB. MetaphaseC. AnaphaseD. Telophase |
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Answer» Correct Answer - A The centriole begins to move towards opposite poles of the cell in prophase. |
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| 175. |
State the role of centrioles other than spindle formation. |
| Answer» The two centrioles in the centrosome lie perpendicular to each other. Each has organisation like a cart wheel. These form the basal body of cilia and flagella of plant/animal cells besides forming sphindle fibre in animals cell division. It also helps in the formation of microtubless and sperm tail. | |
| 176. |
It is said that the one cycle of cell division in human cells (eukaryotic cell) takes 24 hours. Which phase of the cycle, do you think occupies the maximum part of cell cycle ? |
| Answer» If a cell takes 24 hours to divide, it will have `18-20` hour time to spend on interphase stge to prepare itself to undergo cell division. | |
| 177. |
Which phase occupies the maximum part of cell cycle?A. Mitrotic phaseB. Meiotic phaseC. InterphaseD. Cytokinesis |
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Answer» Correct Answer - C One cycle of cell division in human cells takes 24 hours in which cell division proper lasts for only about an hour while interphase lasts more than 95% of the duration of cell cycle. |
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| 178. |
Human cells in culture show a cell cycle to be completed in approximately.A. 42 hoursB. 24 hoursC. 24 minutesD. 24 seconds. |
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Answer» Correct Answer - B A typical human cell divides once in approximately every 24 hours. |
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| 179. |
For viewing diakinesis which one of the following would be a suitable materialA. Onion root tipB. Leaf of DichanthiumC. Rat tailD. Flower bud. |
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Answer» Correct Answer - d Diakinesis is the stage of meiosis for the study of meiosis yong flower bud is the best material. |
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| 180. |
Higher plants differ from animals in havingA. Spindle microtubleB. Anastral mitosisC. KinetochoresD. Disappearance of nucleolus during prophase |
| Answer» Correct Answer - B | |
| 181. |
Higher plants differ from animals in havingA. Spindle microtubuleB. Anastral mitosisC. KinetochoresD. Disappearance of nucleous during prophase |
| Answer» Correct Answer - B | |
| 182. |
Recombinant nodules are found during which of the followingA. AnaphaseB. ProphaseC. TelophaseD. Metaphase |
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Answer» Correct Answer - b Knot like structure Chromomeres found in the stage leptotene of prophase first of meiosis. |
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| 183. |
Four daughter cells formed after meiosis areA. Genetically similarB. Genetically differentC. AnucletateD. Multinucleate |
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Answer» Correct Answer - b During meiosis, daughter cells has the half number of chromosomes with respect to parent cells. Therefore daughter cell will be genetically different. |
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| 184. |
Recombination nodules which mediate for chromosome recombination occur duringA. ZygoteneB. MeiosisC. Pachytene stageD. Diplotene stage |
| Answer» Correct Answer - C | |
| 185. |
Repulsion of homologous chromosomes takes place inA. ZygoteneB. LeptoteneC. DiakinesisD. Diplotene |
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Answer» Correct Answer - d In meiosis, crossing over takes place in pachytene, after that chromosme get repulsion in diplotene. |
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| 186. |
Meiosis II performsA. seperation of sex chromosomesB. synthesis of DNA and centromereC. seperation of homologous chromosomesD. seperation of chromatids |
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Answer» Correct Answer - D Meiosis II performs separation of chromatids. |
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| 187. |
Pairing of homologous chromosomes takes place inA. PachyteneB. ZygoteneC. DiploteneD. None of these |
| Answer» Correct Answer - B | |
| 188. |
In a cell cycle `G_(1)` phase is marked by theA. Transcription of r-RNAB. Transcription of r-RNA, t-RNAC. Transcription of r-RNA, m-RNAD. Transcription of -RNA, m-RNA, t-RNA and synthesis of different proteins |
| Answer» Correct Answer - D | |
| 189. |
.......... has been described as a tripartite ribbon like structure situated between pairing homologous chromosomesA. Synaptinemal complexB. Lateral elementsC. Axial filamentsD. Central elements |
| Answer» Correct Answer - A | |
| 190. |
Recombination is completed by the end ofA. ZygoteneB. LeptoteneC. PachyteneD. Diplotene |
| Answer» Correct Answer - C | |
| 191. |
Recombination between homologous chromosomes is completed by the end ofA. PanchyteneB. LeptoteneC. DiplotineD. Zygotine |
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Answer» Correct Answer - A Recombination between homologous chromosomes us completed by the end of pachytene |
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| 192. |
Which of the following is unique to mitosis and not a part of meiosisA. Homologous chromosomes cross overB. Homologous chromosomes pair and form bivalentC. Homologous chromosomes behave independentelyD. Chromatids are seperated during anaphase |
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Answer» Correct Answer - C Homologous chromosomes behave independently into completed by the end of pachytene. |
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| 193. |
Which of the following phases of the cell cycle is not a part of interphase?A. SB. `G_(1)`C. `G_(0)`D. M |
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Answer» Correct Answer - D interphase in a cell cycle has three stages `-G_(1),S` and `G_(2)` M-phase is not a part of interphase. |
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| 194. |
Of the total duration of cell cycle, the interphase lasts more thanA. `95%`B. `5%`C. `90%`D. `92%` |
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Answer» Correct Answer - A Of the total duration of cell cycle , the interphase lasts more than 95%. |
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| 195. |
In the 24 hour average of cell cycle of a human cell, cell division properly lasts for aboutA. 23 hoursB. An hourC. Half an hourD. 90 minutes |
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Answer» Correct Answer - B In the 24 hrs average duration of cell cycle of the human cell, cell division proper lasts for about an hour. |
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| 196. |
Which stage is marked by terminalizatioh of chiasmata?A. ZygoteneB. PachyteneC. DiploteneD. Diakinesis |
| Answer» Correct Answer - D | |
| 197. |
See the following figure and identify marked lined i,ii iii and iv A. i Chromosome, ii Centromere, iii Centriole, iv ChromatidB. i. Chromatid, ii Centromere, iii Centriole, iv ChromosomeC. i. chromosome, ii Centriole, iii Centromere, iv ChromatidD. i. Chromatid, ii Centriole, iii Centromere, iv Chromosome. |
| Answer» Correct Answer - d | |
| 198. |
The non-sister chromatids twist around and exchange segmetns with each other during or in meiosis crossing over is initiated atA. DiploteneB. DiakinesisC. LeptoteneD. Pachytene |
| Answer» Correct Answer - d | |
| 199. |
The process of mitosis is divided into 4 phases Identify the correct order in which these phases appear in mitosisA. Anaphase, metaphase, telophase and prophaseB. Telophase, anphase, metaphase, and prophaseC. Metaphase, prophase, anaphase and telophaseD. Prophase, metaphase, anaphase and telophase |
| Answer» Correct Answer - d | |
| 200. |
"Endomitosis" refers toA. Division of nucleus without chromosomal divisionB. Division of chromosome without nuclear divisionC. Division of cytoplasmD. None of the above |
| Answer» Correct Answer - b | |