Interphase

Q. How many chromatids are there in a chromosome after S phase?

1. One
2. Two
3. Three
4. Four

Q.

What are the 4 stages of the cell cycle?

Q. Choose the correct sequence of phases in an eukaryotic cell cycle from among the below options.

1. $G_1\Rightarrow S\Rightarrow G_2\Rightarrow M$
2. $S\Rightarrow G_1\Rightarrow G_2\Rightarrow M$
3. $S\Rightarrow G_2\Rightarrow G_1\Rightarrow M$
4. $M\Rightarrow S\Rightarrow G_1\Rightarrow G_2$

Q. Which of the following cells permanently enter into G${}_0$ Phase ?

1. Meristematic cells
2. Parenchyma cells
3. Nerve cells
4. All cells of animals

Q. In S phase of the cell cycle:

1. Amount of DNA doubles in each cell
2. Amount of DNA remains same in each cell
3. Chromosome number is increased
4. Amount of DNA is reduced to half in each cell.

Q. ________ cells re-enter the cell cycle from G${}_0$ phase.

1. Heart cells
2. Nerve cells
3. Meristematic cells
4. Cambium

Q. Describe the events taking place during interphase?

Q. Post-mitotic phase is

1. $G_{0-}$ phase
2. $G_{1-}$ phase
3. S-phase
4. $G_{2-}$ phase

Q. Which one is the longest phase of cell cycle?

1. Prophase
2. Telophase
3. $G_{1-}$ Phase
4. $G_{2-}$ Phase

Q.

When energy is stored and the cell undergoes differentiation in adverse conditions, the stage is called

1. Anaphase

2. S

3. G₀

4. G₁

Q. The longest stage of the cell cycle is

1. prophase
2. metaphase
3. telophase
4. interphase

Q. The process of duplication of chromosomes is observed in interphase (or early prophase). The particular or specific stage of the eukaryotic cell cycle during which this occurs is termed the -

1. $G_1$ or Gap Phase 1
2. $G_2$ or Gap Phase 2
3. $G_0$ or Dormant phase
4. S or Synthesis stage

Q. What best describes the cells in $G_0$ phase? They

1. are metabolically inactive
2. cannot divide forever
3. can re-enter $G_1$ phase
4. both a and c are correct

Q. If a cell is to divide, when do the organelles, such as centrioles, duplicate?

1. Interphase
2. Prophase
3. Metaphase
4. Anaphase

Q. Given below is a schematic break-up of the phases/stages of the cell cycle:


Which one of the following is the correct indication of the stage/phase in the cell cycle?

1. A - Cytokinesis
2. B - Metaphase
3. C - Karyokinesis
4. D - Synthesis phase

Q.

In mitosis, terminalization process

1. Is absent

2. Begins during anaphase

3. Completed during anaphase

4. Occurs only in astral mitosis

Q. During $G_1$ phase, cells

1. grow
2. synthesize cellular contents
3. do not divide
4. all of the above

Q.

In the somatic cell cycle:

1. DNA replication takes place in S-phase

2. A short interphase is followed by a long mitotic phase

3. G₂ phase follows mitotic phase

4. In G1 phase DNA content is double the amount of DNA present in the original cell.

Q.

Pick the wrong statement about interphase?

1. It is called resting phase

2. There is no cell growth

3. There is DNA replication

4. It is divided into 3 phases

Q. The cells of the quiescent center are characterized by:

1. Having dense cytoplasm and prominent nuclei
2. Having light cytoplasm and small nuclei
3. Dividing regularly to add to the corpus
4. Dividing regularly to add to tunica

Q. What is the average cell cycle span for a mammalian cell?

Q. Arrange the following events that occur in mitosis and select the correct option.
(A) Complete disintegration of the nuclear envelope
(B) Movement of chromatids towards opposite poles
(C) Reformation of organelles
(D) Beginning of condensation of chromatin material

Q.

Match the following time spans with their actual phases in a eukaryotic cell cycle.

Column I Column II

i). 10 hr a. M Phase

ii). 9 hr b. $G_2$ Phase

iii). 4 hr c. S Phase

iv). 1 hr d. $G_1$ Phase

1. i).$\to$ a., ii).$\to$ b., iii).$\to$ c., iv). $\to$ d.

2. i).$\to$ d., ii).$\to$ c., iii).$\to$ b., iv).$\to$ a.

3. i).$\to$ c., ii).$\to$ d., iii).$\to$ a., iv). $\to$ b.

4. i).$\to$ b., ii).$\to$ a., iii).$\to$ d., iv). $\to$ c.

Q.

If a cell needs to quit dividing, it enters a state where it stagnates to carry its normal cell activity. This is called as the _____ phase.

1. M

2. G₂

3. G₀

4. S

Q. The cell is in ______ after DNA replication and before cell division.

1. M phase
2. $G_1$ phase
3. $G_2$ phase
4. $G_0$ phase

Q. Interphase is the

1. Stage between meiosis I and meiosis II
2. Stage between two mitotic divisions
3. Stage between mitosis and meiosis
4. All of the above