Topic 2 Mitosis Flashcards Preview

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Flashcards in Topic 2 Mitosis Deck (11)
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1
Q

What is mitosis?

A

Mitosis produces identical copies of cells and is used for growth, repair and asexual reproduction.

2
Q

What are chromosomes?

A

Chromosomes are long molecules of DNA. There are 23 pairs in most human cells.

3
Q

What are genes?

A

Genes are a long section of DNA that control characteristics.

4
Q

What are the 5 stages of mitosis?

A

Prophase, metaphase, anaphase, telophase, cytokinesis.

5
Q

What happens in prophase?

A

Chromosomes shorten and thicken . Nucleus breaks down and spindle fibres begin to form

6
Q

What happens in metaphase

A

Spindle fibres attach to the chromosomes and line up along the middle of the cell.

7
Q

What happens in anaphase

A

Spindle fibres shorten and pull chromosomes apart to the poles of the cell

8
Q

What happens in telophase

A

Membrane forms around each set of chromosomes to form two new nuclei.

9
Q

What happens in Cytokinesis

A

New cell surface membrane form to separate the two cells(daughter cells)

10
Q

State all the stages of the cell cycle.

A

Interphase, prophase, metaphase, anaphase, telophase, cytokinesis

11
Q

What happens in interphase

A

New sub cellular structures are made (eg mitochondria and dna replicates)