Mitosis Flashcards

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1
Q

How do viruses replicate ?

A

Injecting their nucleic acid into host to replicate

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2
Q

Why do prokaryotic cells not undergo cell division ?

A

Classed as non - living - unable to reproduce
Replicate via binary fission

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3
Q

What occurs in interphase ?

A

Growth, Dna synthesis , preparation for mitosis
Organelles double, Dna replicates, Cell grows

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4
Q

What are the products of nuclear division ?

A

Mitosis - 2 Diploid daughter cells
Meiosis - 4 Haploid daughter cells

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5
Q

State the products of mitosis

A

One round of division
Genetically identical cells (For growth/repair)
Diploid cells created

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6
Q

What occurs in Prophase ?

A

Chromosomes condense, become visible

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7
Q

What occurs in Metaphase ?

A

Chromosomes/Sister chromatids align along the equator of cell
Spindle fibres attach to centromere and chromatids

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8
Q

What occurs in Anaphase ?

A

Centromere splits, split into chromatids
Move to opposite ends of the cell
Requires ATP

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9
Q

What occurs in Telophase ?

A

Chromatids in groups at the poles
Uncoiling and become thinner
Spindle fibres disintegrate

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10
Q

State the equation to calculate the mitotic index

A

M . I = Number of cells in mitosis
Total number of cells X100

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11
Q

When does DNA replication/synthesis occur ?

A

During interphase

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12
Q

What is the name used to describe when the cells and cytoplasm split ?

A

Cytokinesis

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13
Q

What occurs during prophase in mitosis ?

A

Chromosomes condense, becoming shorter, fatter and more visible
Nuclear envelope breaks down and the nucleolus disappears
Protein bundles, centrioles move to opposite ends of the cell
Microtubules form the spindle fibres between the cell

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