1.6 Mitosis Flashcards

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1
Q

name the 4 phases of mitosis

A

(mitosis)
- prophase
- metaphase
- anaphase
- telophase
(cytokinesis)

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2
Q

what is mitosis

A

when 2 genetically identical nuclei are formed from the original nucleus

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3
Q

what is cytokinesis

A

division of cytoplasm to form 2 daughter cells

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4
Q

interphase =

A

(before mitosis)
- replication of DNA
- making+replicating new organelles
- synthesis of ATP
- synthesis of proteins

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5
Q
A
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6
Q

Prophase =

A
  • dna condenses, chromosomes formed
  • chromatids visible
  • protein microtubules form
  • spindle develops
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7
Q

Metaphase =

A
  • chromosome position at the equator of the spindle.
  • chromosomes become attached to the spindle fibres
  • Contraction of the spindle fibres draws the individual chromatids apart
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8
Q

Anaphase =

A

The spindle fibres contract. The chromatids separate and are pulled to opposite poles of the cell

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9
Q

Telophase =

A
  • The chromatids have now reached the poles of the cells
  • chromatids = chromosomes again
  • The chromosomes uncoil and lengthen. The spindle breaks down.
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10
Q

Cytokinesis (animal cells) =

A

(After mitosis)
Actin filaments form around equator, causing a cleavage furrow. Cell spits in 2

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11
Q

Cytokinesis (plant cells) =

A

Vesicles move to equator forming cell plates

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