Interphase

Q.

During which phase(s) of the cell cycle, the amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

1. Only G2

2. G1 and S

3. G0 and G1

4. G2 and M

Q. Which one is correct about the $G_0$ stage ?
I. It is a quiescent stage.
II. In this stage the cell cycle is stopped.
III. $G_0$ cells do not grow or proliferate but are metabolically active.
IV. $G_0$ cells can divide in response to some stimulus.

1. All are correct
2. I, II, III are correct
3. I, II are correct
4. Only I and IV are correct

Q. In which phase of cell cycle, the cell spends the least amount of time?

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

Q.

The duplication of chromosomes or DNA occurs during

1. Interphase.

2. Prophase.

3. Mitosis.

4. Cytokinesis.

Q. Assertion (A) : Interphase was often referred to as the resting stage
Reason (R) : During interphase, the cell is metabolically inactive

1. Both assertion and reason are false
2. Both assertion and reason are true and the reason is the correct explanation of the assertion
3. Both assertion and reason are true but the reason is not the correct explanation
4. The assertion is true but the reason is false

Q. Post-mitotic phase is

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

Q.

Pick the wrong statement about interphase from the following:

1. It is called the resting phase

2. There is no cellular growth

3. There is DNA replication

4. It is divided into three phases

Q.

The nucleus of the cell which is not undergoing division is called

1. Nucleoplasm

2. Nucleolus

3. Interphase nucleus

4. All of these

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. When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

1. M
2. Both $G_2$/M and M
3. $G_1$/S
4. $G_2$/M

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

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

Q.

Mention three significant changes that occur in a cell during interphase.

Q.

What happens in cell growth?

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

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

Q. Cells can permanently stop midway in the cell cycle and not complete the cycle.

1. True
2. False

Q. In cell division, DNA synthesis takes place during:

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

Q. Which phase of the cell cycle is called the pre-mitotic phase?

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

Q.

If the cell cycle is restricted in $G_1$ phase of cell, the condition is known as -

1. $G_2$​ phase

2. S phase

3. $G_0$​ phase

4. M phase

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. 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. $G_0$
3. $G_2$
4. $G_1$

Q. What happens in the phase coming in between G${}_1$ and G${}_2$ phase?

1. DNA replication
2. Karyokinesis
3. Cytokinesis
4. None of these

Q. During G2 phase a diploid cell contains the amount of DNA equal to a:

1. Diploid cell
2. Haploid cell
3. Tetraploid cell
4. None of the above

Q. In which of the following phases do the cell organelles increase in number?

1. $G_1$ phase
2. S phase
3. $G_2$ phase
4. M- phase

Q. Which one is correct about the $G_0$ stage ?
I. It is a quiescent stage.
II. In this stage the cell cycle is stopped.
III. $G_0$ cells do not grow or proliferate but are metabolically active.
IV. $G_0$ cells can divide in response to some stimulus.

1. All are correct
2. I, II, III are correct
3. I, II are correct
4. Only I and IV are correct

Q. In synthesis(S) phase of the cell cycle,

1. the amount of DNA doubles and chromosome number increases
2. the amount of DNA and chromosome number remains constant
3. the amount of DNA doubles and chromosome number remains constant
4. the amount of DNA is reduced to half and chromosome number decreases

Q. Which of the following is not a phase of interphase?

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

Q. DNA replication occurs during

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

Q. In S phase of interphase, doubles.

1. enzymes
2. DNA
3. proteins
4. cells

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. Assertion (A) : Interphase was often referred to as the resting stage
Reason (R) : During interphase, the cell is metabolically inactive

1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but the reason is not the correct explanation
3. The assertion is true but the reason is false
4. Both assertion and reason are false