Mitosis Flashcards

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1
Q

what are centromeres?

A

where the sister chromatids are attached.

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2
Q

what are chromosomes?

A

structures that contain genetic materials passed down from generations.

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3
Q

what are sister chromatids?

A

two structures that have identical DNA.

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4
Q

what are the four phases of mitosis?

A

Prophase
Metaphase
Anaphase
Telophase

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5
Q

what is a chromatin?

A

the relaxed form of DNA in the cell’s nucleus.

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6
Q

what is a spindle apparatus?

A

a structure that helps move and organizes chromosomes before cell division.
made of spindle, centrioles, and aster fibers

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7
Q

what is anaphase?

A

the third phase of mitosis.

the sister chromatids are pulled apart and to opposite ends of the cell.

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8
Q

what is cylins?

A

proteins that bind to enzymes.

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9
Q

what is cytokinesis?

A

the third stage of the cell cycle

where the cytoplasm divides and creates a new cell.

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10
Q

what is interphase?

A

the first stage of the cell cycle where the cell grows and replicates DNA.

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11
Q

what is metaphase?

A

the second stage of mitosis.

where the sister chromatids are pulled by motor proteins along the spindle apparatus.

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12
Q

what is metaphase?

A

the second stage of the cell cycle.

DNA is divided into two sister chromatids.

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13
Q

what is prophase?

A

the first stage of mitosis.

the chromatin condenses into chromosomes and the nucleus disappears.

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14
Q

what is telophase?

A

the last phase of mitosis.

the chromatids arrive at the cell’s poles and began to decondense.

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15
Q

what is the cell cycle?

A

a cycle of cells reproducing and dividing.

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16
Q

what are stem cells?

A

Unspecialized cells that can turn into specialized cells under the right conditions.

17
Q

what is Apoptosis?

A

a programmed cell death

18
Q

If a cell with 36 chromosomes undergoes mitosis, how many chromosomes will each of the two new cells have?

A

36

19
Q

Why does the DNA need to condense before starting Mitosis?

A

to reduce mistakes and make it more organized.

20
Q

What does mitosis produce?

A

nucleus

21
Q

How many chromosomes are in one cell of a human?

A

46

22
Q

In cell division, which cell part divides first?

A

Nucleus

23
Q

Which part of the cell is divided during Mitosis?

A

Nucleus

24
Q

DNA replication occurs during ___________.

A

interphase

25
Q

Mitosis, a stage in the cell cycle, is important for what reason?
division of the cytoplasm
growth and repair of an organism
reduction of the cell’s chromosome number
removal of diseased cells

A

growth and repair of an organism

26
Q

Which description best fits the activity of a cell during interphase?

A

The cell carries on metabolism.

27
Q

A cell that undergoes repeated mitosis without cytokinesis would have _______.

A

many nuclei.