Identify the correct statement with regard to G 1 phase (Gap 1) of interphase.

Cell is metabolically active, grows but does not replicate its DNA.

Reorganisation of all cell components takes place.

DNA synthesis or replication takes place.

Match Column - I with Column - II. Column -I Column -II (a) S phase (i) Proteins are synthesized (b) G 2 phase (ii) Inactive phase (c) Quiescent stage (iii) Interval between mitosis and initiation of DNA replication (d) G 1 phase (iv) DNA replication Choose the correct answer from options given below.

( a ) - ( iv ) ; ( b ) - ( i ) ; ( c ) - ( ii ) ; ( d ) - ( iii )

( a ) - ( iii ) ; ( b ) - ( ii ) ; ( c ) - ( i ) ; ( d ) - ( iv )

( a ) - ( iv ) ; ( b ) - ( ii ) ; ( c ) - ( iii ) ; ( d ) - ( i )

( a ) - ( ii ) ; ( b ) - ( iv ) ; ( c ) - ( iii ) ; ( d ) - ( i )

EASY

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Identify the major difference between interphase and interkinesis in meiosis.

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Important Questions on Cell Division

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Identify the correct statement with regard to G₁ phase (Gap 1) of interphase.

HARD

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has:

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Following the cell cycle scheme given below, what is the probability that a cell would be in M-phase at any given time?

Question Image

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Cell in the quiescent stage

(G_{0})

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Cells in G₀ phase:

MEDIUM

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Gene

P^{53}

guards integrity of

DNA

and hence called 'Guardian Angel of Cell's genome'. It checks the integrity of

DNA

MEDIUM

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Which of the following best describes the DNA content and the number of chromosomes at the end of S and M phases of the cell cycle in mitosis, if the DNA content of the cell at the beginning of the cell cycle (G1 phase) is considered as C and the number of chromosomes 2 N?

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

' G_{0}'

' stage of the cell cycle is characterized by ________

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Which phase occupies the maximum part of cell cycle?

MEDIUM

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Match the stages of meiosis of Column-I to their characteristic features in Column-II and select the correct option using the codes given below:

Column-I		Column–II
a.	Pachytene	(i)	The pairing of homologous chromosomes
b.	Metaphase I	(ii)	Terminalization of chiasmata
c.	Diakinesis	(iii)	Crossing-over takes place
d.	Zygotene	(iv)	Chromosomes align at the equatorial plate

MEDIUM

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

The fruit fly has

8

chromosomes

(2 n)

in each cell. During the interphase of mitosis if the number of chromosomes at

G_{1}

phase is

8 .

What would be the number of chromosomes after the S phase?

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

In the 'S' phase of the cell cycle:

MEDIUM

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Match Column - I with Column - II.

Column -I		Column -II
(a)	$S$ phase	(i)	Proteins are synthesized
(b)	$G_{2}$ phase	(ii)	Inactive phase
(c)	Quiescent stage	(iii)	Interval between mitosis and initiation of DNA replication
(d)	$G_{1}$ phase	(iv)	DNA replication

Choose the correct answer from options given below.

MEDIUM

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Arrange the following events of mitotic cell cycle in series
a) Reformation of nucleolus, Golgi complex and

ER

b) Amount of

DNA

per cell doubles
c) Disappearance of Golgi complex and

ER

d) Condensation of chromatin into chromosome
e) Distribution of mitochondria and plastids to daughter cells
f) Separation of chromatids at centromere

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

If onion root tip cell has

14

chromosomes and DNA content as

2 C,

what are the number of chromosomes and DNA content during

G_{1}, S

and

G_{2}

phases respectively?

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Select the incorrect statement of cell cycle.

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

Choose the incorrect statements among the following.
A) Cells of the lining of the gut are replaced by mitotic division constantly
B) Formation of liquid endosperm takes place, if karyokinesis is not followed by cytokinesis
C) In telophase, the chromosomes reach the poles and condenses to form the chromatic network
D) In quiescent stage, the cell is metabolically inactive.

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

The enzyme recombinase is required at which stage of meiosis:

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

The correct sequence of phases of cell cycle is:

EASY

Biology>Cell Structure and Function>Cell Division>Cell Division and Cell Cycle

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 2C?

Identify the major difference between interphase and interkinesis in meiosis.

Important Questions on Cell Division

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