EASY

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As there occurs more and more condensation of chromatin during cell division, there occurs

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Important Questions on Cell Cycle and Cell Division

EASY

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

Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?

EASY

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

Which of the following is not a characteristic feature during mitosis in somatic cells?

MEDIUM

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

Which of the following options gives the correct sequence of events during mitosis?

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

Spindle fibres attach on to:

MEDIUM

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

Below features indicates which phase of mitosis?
(i) Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements
(ii) Nuclear envelope assembles around the chromosome clusters
(iii) Nucleolus, Golgi complex and ER reform

EASY

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

Which ONE of the following sequences of events CORRECTLY represents mitosis?

MEDIUM

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

A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:

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

Select the incorrect statement with reference to mitosis:

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

Fill in the blanks
During metaphase, spindle fibres attach to ________.
Centromeres split and chromatids __________ during __________.

MEDIUM

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

Select the correct statements.

A. Tetrad formation is seen during the Leptotene.

B. During Anaphase, the centromeres split and chromatids separate.

C. Terminalization takes place during Pachytene.

D. Nucleolus, Golgi complex and ER are reformed during Telophase.

E. Crossing over takes place between sister chromatids of homologous chromosomes.

Choose the correct answer from the options given below:

EASY

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

Attachment of spindle fibers to kinetochores of chromosomes becomes evident in:

MEDIUM

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

By comparing mitosis and meiosis occurring in the same organism, which ONE of the following options is CORRECT regarding the DNA content per cell?

MEDIUM

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

Assertion (A): Mitosis is often called indirect division
Reason (R): Mitosis divides a parent cell into two daughter cells

HARD

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

A cell weighing

1 mg

grows to double its initial mass before dividing into two daughter cells of equal mass. Assuming no death, at the end of 100 divisions what will be the ratio of the mass of the entire population of these cells to that of the mass of the Earth? Assume that mass of the earth is