Mitosis/ Chromosomes Flashcards

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1
Q

What does the nucleus contain?

A

Your genetic material in the form of chromosomes.

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2
Q

What are chromosomes?

A

Coiled up lengths of DNA molecules.

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3
Q

What do genes control?

A

Different genes control different characteristics.

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4
Q

How many chromosomes do humans typically have?

A

23 pairs or 46 chromosomes.

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5
Q

What is cell division called?

A

Mitosis

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6
Q

What is mitosis used for?

A

Growth and repair.

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7
Q

What happens at the end of the cell cycle

A

There are two identical cells with the same number of chromosomes

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8
Q

What happens in the cell cycle?

A

The cell grows and increases the amount of subcellular structures such as mitochondria- it then duplicates its DNA so there is one copy for each new cell- the chromosomes line up at the centre of the cell and cell fibres pull them apart- membranes form around the chromosomes to become nuclei, the nucleus has now divided- lastly the cytoplasm and cell membrane divide.

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9
Q

What pulls the chromosomes apart?

A

Spindle fibres

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10
Q

Cytokinesis

A

The cell splitting

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