Cell Division: Mitosis Flashcards

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1
Q

Mitosis

A

mitosis is the process of cell division

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2
Q

why is it important for cells to divide

A

the larger a cell becomes the more demands the cell places on its DNA

Allows the cell to heal and repair tissue

Allows the organism to survive even if some cells die

Allows for cells to differentiate and become specialized tissues

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3
Q

The cell cycle

A

During the cell cycle a cell grows, prepares for division, and divides to form two daughter cells, each of which then begins the cell cycle again

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4
Q

inter phase

A

the period of cell cycle between cell divisions

  1. G1
  2. S
  3. G2
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5
Q

the phases of mitosis

A

pro phase
meta phase
anaphase
telophase

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6
Q

prophase

A

Chromatin condenses and the chromosomes quill tightly. the nucleus . they help organize the spindle fibers. centrals-two tiny structures located in the cytoplasm near the nuclear envelope. the nuclear envelope breaks down.

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7
Q

Meta phase

A

The chromosomes line up across the center of the cell at the meta phase plate.

Micro tubules from the spindle fibers connect to the centro-mere of each chromosome.

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8
Q

Ana phase

A

The sister chromatids separate into individual chromosomes and are moved to the poles of the cell by the spindle fibers.

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9
Q

Telophase

A

The chromosomes gather at opposite ends of the cell and lose their distinct shape.

Two new nuclear envelopes form around each cluster of chromosomes.

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10
Q

Cytokinesis

A

The cytoplasm pinches in half and each daughter cell has an identical set of duplicate chromosomes.

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