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Genetics 2.0 > Mitosis test one > Flashcards

Mitosis test one Flashcards

1
Q

what happens at end of prometaphase

A

microtubule attaches to unattached sister kinetochore orienting each chromatid to opposite sides

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2
Q

interval between chromosome duplication and beginning of mitosis DNA repair and protein prepared for nuclear division

A

G2

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3
Q

what does CDK do

A

activates DNA transcription factors in G1 confirms replication and repair are complete in G2

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4
Q

what is the time frame of G1

A

9 hours

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5
Q

separation of sister chromatids pulls one towards opposite pole, kinetochore microtubules shorten when chromatid goes near pole

A

anaphase

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6
Q

what are checkpoints

A

signals that tell the cell not to move forward in the cell division

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7
Q

where does chromosomes attach to microtubules

A

kinetochore, located in centromere of chromosome

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8
Q

what is the time frame of mitosis

A

one hour

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9
Q

cell may grow during this phase, also synthesizes proteins that are essential to the subsequent steps of mitosis itself

A

G2

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10
Q

what Factor initiates a cell division

A

CDK cyclin dependent kinase

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11
Q

nulcei are packaged into two separate daughter cells

A

cytokinesis

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12
Q

due to break down of nucleoli, what production ceases

A

ribosome

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13
Q

what are the three parts of interphase

A

G1, synthesis, G2

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14
Q

mitotic spindle begins to form

A

prometaphase

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15
Q

when does cytokinesis end

A

after telophase

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16
Q

what period is when chromosomes are neither duplicating nor dividing

A

G1

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17
Q

where do microtubules come from

A

centrosome in the cytoplasm

18
Q

what factors initiate a cell division cycle

A

time cell size molecular trigger (factor)

19
Q

what is the time frame of synthesis

A

5 hours

20
Q

cell achieves most of its growth by using the info from its genes to make and assemble the materials it needs to function normally

A

G1

21
Q

in what stages of interphase do the centrosomes replicate

A

S and G2

22
Q

what cycle varies in length more than any other phase of the cell cycle

A

G1

23
Q

during synthesis are the sister chromatids joined together

A

yes

24
Q

break down of nuclear envelope, allowing microtubules from centrosome to invade nucleus

A

prometaphase

25
Q

each chromosome doubles to produce identical sister chromatids that will become visible when the chromosomes condense at beginning of mitosis

A

synthesis

26
Q

what is the time frame of G2

A

3 hours

27
Q

what is a syncytium

A

an animal cell with two or more nuclei

28
Q

centrosomes move apart towards opposite end and become clearly distinguishable as separate entities in the microscope

A

prophase

29
Q

spindle fibers disperse nuclear envelope reforms, one or more nuclei reappear uncondense chromatids

A

telophase

30
Q

what are the three microtubules that make up the mitotic spindle

A

kinetochore microtubules polar microtubules astral microtubules

31
Q

what do you find in the centrosome

A

centrioles

32
Q

chromosomes begin to condense

A

prophase

33
Q

time when the cell duplicates its genetic material by synthesizing DNA

A

synthesis

34
Q

when does cytokinesis start

A

anaphase

35
Q

in prometaphase, are both sister chromatids attached to a kinetochore

A

no just one

36
Q

forces pulling sister chromatids toward opposite poles are in equilibrium

A

metaphase

37
Q

the connection of sister chromatids to opposite spindle poles sets in motion them chromatids to move to center of cell

A

metaphase

38
Q

what happens in G0

A

temporarily paused or terminally differentiated

39
Q

the darkly stained nucleoli begin to break down and disappear

A

prophase

40
Q

are sister chromatids attached at centromere during prophase

A

yes

41
Q

how does plant cell division occur

A

by vesicles depositing cell wall material to form a new cell plate

42
Q

what phase do you begin to see microtubules outside nucleus

A

interphase

Genetics 2.0 (13 decks)

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