Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

bio lecture > lecture 24 - mitosis > Flashcards

lecture 24 - mitosis Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

what is chromatin?

A

DNA and proteins that make up chromosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

in what form is DNA when the cell is not undergoing mitosis?

A

chromatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

2 main phases of the cell cycle

A

interphase and mitotic phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the three stages of interphase?

A

g1 phase, s phase, g2 phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

which phase does cell growth occur at?

A

g1 phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

which phase does dna replication occur at?

A

s phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

which stage does the cell spend most of its life in?

A

interphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what structure is made of microtubles?

A

mitotic spindle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is the mitotic spindle?

A

separates chromosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what stage comes after prophase?

A

prometaphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

which phase does chromatin condense into chromosomes?

A

prophase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what happens to the nuclear envelope in prophase?

A

begins to breakdown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

where are sister chromatids joined at?

A

centromere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

when do spindle fibres attach to kinetochores?

A

prometaphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what phase comes before metaphase?

A

prometaphse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what phase comes after metaphase?

A

anaphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what form is DNA found in metaphase

A

condensed chromosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is happening to DNA in telophase?

A

DNA is condensing back into chromatin

18
Q

what phase comes before telophase?

A

anaphase

19
Q

what happens in anaphase?

A

sister chromatids are pulled to opposite poles

20
Q

what are the main stages of mitosis?

A

prophase, prometaphse, metaphase, anaphase, and telophase

21
Q

what is cytokinesis in animal cells?

A

division of the cytoplasm via cleavage furrow formed by actin and myosin

22
Q

true or false - cell plate forms from vesicles, eventually becoming the cell wall in cytokinesis of plant cells

A

true

23
Q

how is the cell plate formed in plant cells?

A

vesicles join together

24
Q

what is happening to the nuclear envelope in telophase?

A

reforming

25
Q

what form is DNA in prometaphse?

A

condensed chromosomes

26
Q

what causes the cell to stretch in anaphase?

A

microtubules

27
Q

what type of cell division occurs in bacteria?

A

binary fission

28
Q

true or false - DNA condenses in bacteria

A

false

29
Q

what type of protein moves DNA to opposite ends of the cell?

A

actin and tubulin

30
Q

where does the mitotic spindle form in dinoflagellates?

A

outside the nucleus

31
Q

what happens to the nuclear envelope in dinoflagellates during cell division?

A

stays intact

32
Q

where does the mitotic spindle form in diatoms?

A

inside the nucleus

33
Q

what happens to the nuclear envelope in diatoms during cell division?

A

nuclear envelope remains intact

34
Q

what is the primary focus of cytokinesis in the cell cycle?

A

separate the cytoplasm into 2 daughter cells

35
Q

what phase of the cell cycle is the shortest?

A

M phase

36
Q

which structure is responsible for the separation of sister chromatids during mitosis?

A

mitotic spindle

37
Q

during which phase of mitosis do the kinetochores attach to the microtubules of the spindle?

A

prometaphse

38
Q

how many chromosomes are present in a human somatic cell?

A

46

39
Q

true or false - somatic cells are involved in reproduction

A

false - gametes are involved in reproduction

40
Q

why does the nuclear membrane have to breakdown?

A

allows spindle fibres to attach to the chromosome and move them around

41
Q

which phase does the nuclear envelope fully breakdown?

A

prometaphse

42
Q

in which phase does the cell elongate?

A

anaphase

43
Q

what form does DNA stay in binary fission?

A

chromatin

bio lecture (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions