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.

HARD

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The different phases of the cell cycle are shown in the diagram below. Determine which order is appropriate for A, B, C, and D.

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Important Questions on Cell Cycle and Cell Division

EASY

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

A bacterial culture was started with an inoculum of

10

cells. What will be the number of cells at the end of

10

cycles of division, assuming that every progeny cell undergoes division in each cycle?

EASY

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Yeast cell can progress through the cell cycle in about _____.

MEDIUM

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>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 Functions>Cell Cycle and Cell Division>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 Functions>Cell Cycle and Cell Division>Cell Cycle

In the 'S' phase of the cell cycle:

EASY

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

During cell growth, DNA synthesis takes place in

MEDIUM

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>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 Functions>Cell Cycle and Cell Division>Cell Cycle

In a mitotic cycle, the correct sequence of phases is:

EASY

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Which phase occupies the maximum part of cell cycle?

HARD

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>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 Functions>Cell Cycle and Cell Division>Cell Cycle

A single bacterium is actively growing in a medium that supports its growth to a number of 100 million. Assuming the division time of the bacterium as 3 hours and the life span of non-dividing bacteria as 5 hours, which ONE of the following represents the maximum number of bacteria that would be present at the end of 15 hour?

EASY

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>Cell Cycle

Cells in G₀ phase:

EASY

Biology>Cell : Structure and Functions>Cell Cycle and Cell Division>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?

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