Question 1 :
This phase of cell cycle is a period of intense synthesis and growth. It constitutes 95% of the duration of the cell cycle. It is 
Question 2 :
In order to enter cell cycle a cell must be stimulated from outside. What type of molecule provides this stimulation?
Question 3 :
During which phase(s) of cell cycle, amount of DNA in a cell remains at $4$C level if the initial amount is denoted as $2$C?
Question 4 :
Cell division can not be stopped in .......... phase of the cell cycle.
Question 6 :
The DNA content of a diploid cell in the G1 phase of the cell cycle is measured If this DNA content is X, then the DNA content of the same cell at metaphase of meiosis I would be
Question 7 :
At what stage of the cell cycle, are histone proteins synthesized in a eukaryotic cell?
Question 8 :
The synthesis of proteins for formation of spindle fibres takes place in
Question 9 :
<br/>The critical checkpoints that control the cell cycle are at the
Question 10 :
........... is the 'post mitotic phase' of the cell in which active synthesis of RNA and proteins takes place.
Question 11 :
Choose the correct answers from the alternatives given :<br>A particular cell has half as much DNA as some of the other cells in a mitotically active tissue. The cell in question could be in
Question 12 :
A cell that has 36 chromosomes, at the start of interphase will have ........... at the conclusion of meiosis.
Question 15 :
Which of the following phases correspond to the interval between mitosis and initiation of DNA replication <br>
Question 18 :
The formation of sister chromatids takes place in which of the following phase?
Question 19 :
In which stage of the cell cycle are histone proteins synthesised in an eukaryotic cell ?
Question 20 :
Maximum cytoplasmic growth and duplication of semi-autonomous organelles occur in ___________________.
Question 21 :
<br/>If a specialised cell no longer divides, it is generally locked in which stage of the cell cycle?
Question 22 :
The various phases of the cell cycle will be affected by limiting growth factors like
Question 23 :
In which of the following stages, a chromosome is minimum coiled?
Question 25 :
Select the correct option:The cells that do not divide further, exit $G_1$ phase to enter an inactive stage called ______ of the cell cycle.
Question 28 :
Choose the correct answers from the alternatives given :<br>Chromosomes are in their most extended form during:
Question 29 :
In which stage of the cell cycle histone proteins synthesized in a eukaryotic cell?
Question 30 :
DNA replication take place in the ............ phase of cell cycle.<br/>
Question 33 :
Which stage of cell cycle is characterised by DNA replication, synthesis of histones and formation of new nucleosomes?
Question 34 :
The replication of DNA takes place during which phase<br/>(I) Mitosis<br/>(II) G$_1$phase<br/>(III) S phase<br/>
Question 35 :
How many of the following are observed in the interphase nucleus?<br/><br/>Chromatid, Nucleosome, Centriole, Nucleolus, Centromere, Kinetochore
Question 36 :
Cell cycle was divided into  four stages i.e. G$_1$, S, G$_2$, M by<br/>
Question 37 :
Which of the followings dose not occur in the interphase of eukaryotic cell division?
Question 39 :
Post-mitotic phase of the cell in which active synthesis of RNA and proteins takes place is
Question 41 :
Assertion: $G_1$ phase is the interval between mitosis and initiation of DNA replication.
Reason: The cell is metabolically inactive during $G_1$ phase.
Question 42 :
If the number of chromosomes in $G_1$ phase is 18. What will be the number of chromosomes in S-phase.
Question 43 :
Which among the following is the longest phase of cell cycle?<br/>
Question 44 :
Mitosis is the name given to the process of cell division. What is the name given to the period between two mitotic cycles?
Question 46 :
Which of the following is a stage of interphase is characterized by an increase in the number of cell organelle?<br/>
Question 48 :
When a cell stops growing say due to shortage of nutrients, this will occur in which phase of the cell cycle?
Question 50 : Study the following lists.<br/><table class="wysiwyg-table"><tbody><tr><td><br/></td><td>List - I</td><td></td><td>List II</td></tr><tr><td>A)</td><td>G$_1$ phase</td><td>I)</td><td>Replication of NA</td></tr><tr><td>B)</td><td>S phase</td><td>II)</td><td>Quiscent stage</td></tr><tr><td>C)</td><td>G$_2$ phase<br/></td><td>III)</td><td>Condensation of chromatin</td></tr><tr><td>D)</td><td>G$_0$ phase<br/></td><td>IV)</td><td>Protein synthesis</td></tr><tr><td></td><td></td><td>V)</td><td>Interval between mitosis and initiation of DNA replication</td></tr></tbody></table>
Question 51 :
An egg cell has 5 picogram of genetic material in its nucleus. What amount of material will be present in the organism at the end of $G_2$-phase of mitosis?<br/>
Question 52 : Match the correct set.<br/><table class="wysiwyg-table"><tbody><tr><td>A. CdK$_4$</td><td>1. First growth phase</td></tr><tr><td>B. S phase</td><td>2. Differential phase</td></tr><tr><td>C. G$_0$ phase</td><td>3. Synthesis of tublin</td></tr><tr><td>D. G$_2$ phase</td><td>4. Replication of DNA</td></tr><tr><td></td><td>5. Molecule active during G$_1$phase for protein synthesis</td></tr></tbody></table>
Question 53 :
An ovum of an animal has 2.5 pg of DNA in its nucleus. The amount of DNA at the end of G$_2$ phase will be
Question 54 :
Select the correct option:Which of the following statements is correct regarding $G_0$ phase?
Question 56 :
If egg of an organism has $10pg$ of DNA in its nucleus. How much DNA would a diploid cell of same organism have in ${G}_{2}$ phase of meiosis?
Question 57 :
Assertion: Cell division is necessary because it is a physiological process bound to occur as a rule of nature.
Reason: Division of nucleus is followed by division of cytoplasm.
Question 58 :
Post mitotic gap phase and synthetic phases of cell cycle are also respectively referred to as:
Question 59 :
State the following statements are true or false.<br>During $G_2$ phase a cell contains double the amount of DNA (4n) present in the original diploid cell.
Question 60 :
The synthesis and storage of ATP molecules required for cell division takes place in 
Question 61 :
At metaphase, chromosomes are attached to the spindle fibres by their
Question 62 :
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species has
Question 63 :
Assertion: $G_1$-phase is also called anaphase, as during this phase the cell stores ATP for cell division.
Reason: Cell produces structural and functional proteins. Cell's metabolic rate is high and is controlled by the enzymes.
Question 64 :
Assertion: Some cells enter $G_0$ phase leading to inactivation of cell cycle.
Reason: $G_0$ phase occurs due to non-availability of mitogen and energy rich compounds.
Question 65 : Match the correct set of scientists in relation to cell division.<br/><table class="wysiwyg-table"><tbody><tr><td>A. Robert Remak </td><td> 1. Meiosis</td></tr><tr><td>B. A.Howard and S.R. Pelc</td><td> 2. Mitosis</td></tr><tr><td>C. W. Fleming </td><td> 3. Amitosis</td></tr><tr><td>D. Farmer and Moore</td><td> 4. Cyclins</td></tr><tr><td></td><td> 5. G$_1$, S and G$_2$ phase</td></tr></tbody></table>
Question 66 :
Cell division cannot be stopped in which phase of the cell cycle?
Question 67 :
When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?
Question 68 :
Radioactive thymidine is fed to the cells about to enter S phase. It will make radioactive 
Question 69 :
A cell in G$_1$ of interphase has 12chromosomes. How many chromosomes and chromatids will be found per cell when this original cell progresses to G$_2$ of interphase?
Question 70 :
Select the events that do not occur in interphase stage of cell-cycle.<br>A. RNA and protein synthesis.<br>B. Cytoplasmic growth.<br>C. Polymerisation of spindle fibres protein.<br>D. Disappearance of Golgi bodies and ER.<br>E. DNA molecules in highly super coiled stage.<br>
Question 71 :
A cell divided every one minute. At this rate division, it can fill a 100 ml of beaker in one hour. How much time does it take to fill a 50 ml beaker?
Question 72 :
The nucleus of a diploid organism contains $3$ng of DNA in $G_1$ phase. Which one of the following statements describes the state of the cell at the end of S phase?
Question 73 :
Radioactive thymidine is fed to cells about to enter S-phase. It will make radioactive
Question 74 :
When cell division fails after S - phase (DNA replication) in a diploid cell, the ploidy is
Question 75 :
Find out the numnber of chromosomes and the amount of DNA in a spore mother cell of bryophytes in $G_2$ stage , if the spore contains $5$ chromosomes and $5$ picograms of DNA
