Cell Division Mitosis Karyokinesis

During mitosis ER and nucleolus begin to disappear at:

1.	late prophase
2.	early metaphase
3.	late metaphase
4.	early prophase

Which stages of cell division do the following figures A and B represent respectively? 

1.	Metaphase- Telophase	2.	Telophase- Metaphase
3.	Late anaphase- Prophase	4.	Prophase- Anaphase

A stage in cell division is shown in the figure. Select the answer which gives the correct identification of the stage with its characteristics:

1.	Late anaphase	Chromosomes move away from the equatorial plate, Golgi complex not present
2.	Cytokinesis	Cell plate formed, mitochondria distributed between two daughter cells
3.	Telophase	Endoplasmic reticulum and nucleolus not reformed yet
4.	Telophase	Nuclear envelop reforms, Golgi complex reforms

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

1.	Condensation, nuclear membrane disassembly, arrangement at the equator, centromere division, segregation, telophase
2.	Condensation, crossing over, nuclear membrane disassembly, segregation, telophase
3.	Condensation, centromere division, segregation, arrangement at the equator, telophase
4.	Condensation, nuclear membrane disassembly, crossing over, segregation, telophase

Anaphase Promoting Complex (APC) is 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?

1. Chromosomes will be fragmented

2. Chromosomes will not segregate

3. Recombination of chromosome arms will occur

4. Chromosomes will not condense

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

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

Which one of the following never occurs during mitotic cell division?

1.	Coiling and condensation of chromatids
2.	Spindle fibres attach to Kinetochores of chromosomes
3.	Movement of centrioles towards opposite poles
4.	Pairing of homologous chromosomes

Select the incorrect statement with reference to mitosis.

1.	Splitting of centromere occurs at anaphase.
2.	All the chromosomes lie at the equator at metaphase.
3.	Spindle fibres attach to centromere of chromosomes.
4.	Chromosomes decondense at telophase

Spindle fibers attach to kinetochores of chromosomes during

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

What is the main function of the spindle fibers during mitosis?

1.	To repair damaged DNA
2.	To regulate cell growth
3.	To separate the chromosomes
4.	To synthesize new DNA