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4 Midterm > Science > Flashcards

Science Flashcards

1
Q

Two types of division cells

A

Mitosis, Meiosis

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2
Q

-daughter cells are
genetically identical

A

Mitosis

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3
Q

-daughter cells are
genetically different

A

Meiosis

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4
Q

is a process where a cell divides resulting in two identical cells.

A

Mitosis

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5
Q

Each cell contains the same number of chromosomes and genetic content.
Takes place in somatic or body cells such as those in bones or skin.

A

Mitosis

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6
Q

Both Mitosis and Meiosis involve four stages
What are those?

A

Prophase, Metaphase, Anaphase and Telophase

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7
Q

Mitosis have?

A

Plant mitosis and animal mitosis

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8
Q

*Nucleolus disappears

A

Prophase

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9
Q

*Chromatin condenses into chromosomes

A

Prophase

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10
Q

*Separation of centrosomes

A

Prophase

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11
Q

*Formation of the mitotic spindle

A

Prophase

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12
Q

*Chromosomes align on the
metaphase plate

A

Metaphase

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13
Q

*Unattached microtubules push against each other to elongate cells

A

Anaphase

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14
Q

*Chromatids separate towards opposite poles

A

Anaphase

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15
Q

*New nuclear envelope forms

A

Telophase

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16
Q

*Chromosomes unfold back into chromatin

A

Telophase

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17
Q

*Nucleoli reapear

A

Anaphase

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18
Q

*Cell continues to enlogate

A

Anaphase

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19
Q

Division of the cytoplasm

A

CYTOKINESIS

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20
Q

Division of cell into two, identical halves
called

A

daughter cells

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21
Q

In plant cells, _______forms at the equator
to divide cell

A

cell plate

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22
Q

In______, cleavage furrow forms to split cell

A

animal cells

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23
Q

Cytokinesis in animal cell have?

A

Acting ring
Cleavage furrow

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24
Q

Cytokinesis in the plant have?

A

Cell wall
Cell plate

25
Q

Produces gametes- sex cells (sperm and egg) by which the number of chromosomes is reduced by half

A

Meiosis

26
Q

In meiosis, the parent cell produces _______ incapable of any further division.

A

4 gametes

27
Q

Homologous pairs are separated reducing chromosome number by half

A

Meiosis l

28
Q

Meiosis l Synapsis for crossing over

A

Prophase l

Metaphase I

29
Q

Meiosis Independent assortment

A

Anaphase I
Telophase I

30
Q

is the first stage of the first meiotic division, where chromosomes are
“bead”-like, and the nuclear membrane and nucleolus disintegrate.

A

Prophase I

31
Q

” STAGES OF PROPHASE I “

A

Leptotene
Zygotene
Zygotene
Diplotene & diakinesis

32
Q

Homologous pairs of chromosomes align along the center of the cell

A

Metaphase I of Meiosis

33
Q

Spindle fiber attached to centromere

A

Metaphase l of meiosis

34
Q

Metaphase plate (center of the cell)

A

Metaphase l of meiosis

35
Q

Separation of daughter chromosomes

A

Anaphase I of Meiosis

36
Q

Sister chromatids attached to the centromere

A

Anaphase l of meiosis

37
Q

Cytoplasm starts to divide
Nuclear membrane reforms

A

Telophase I of Meiosis

38
Q

Sister chromatids are separated producing four haploid gametes

A

Meiosis ll

39
Q

Meiosis ll interphase

A

Prophase Il
Metaphase lI
Anaphase ll
Telophase ll

40
Q

nuclear envelope and nucleolus disperse
centrosomes and centrioles replicate and move to opposite
poles of the cell

A

Prophase Il

41
Q

chromosomes line up
separately across equator of spindle

A

Metaphase Il

42
Q

centromeres divide and spindle microtubules pull the chromatids to opposite poles

A

Anaphase II

43
Q

Centrosomes with centrioles
Cell membrane constricts
Nuclear membrane and Nucleolus reappears

A

TELOPHASE II

44
Q

First Meiotic Division
Homologous chromosomes
pulled apart

A

(Reduction division)

45
Q

Meiosis
Second Meiotic Division
Chromatids are seperated

A

(Equatorial division)

46
Q

Prophase I

A

(Diploid mother cell)

47
Q

Telophase I

A

(Two haploid daughter cells)

48
Q

Prophase ll

A

(Two haploid daughter cells)

49
Q

Telophase II

A

(Four haploid daughter cells)

50
Q

Purpose: growth and repair

A

Mitosis

51
Q

Division: 1

A

Mitosis

52
Q

Parent cell: 2n,diploid

A

Mitosis

53
Q

Daughter cell: 2
2n-identical to parent cell

A

Mitosis

54
Q

Somatic cells

A

Mitosis

55
Q

Purpose: reproduction

A

Meiosis

56
Q

Division: 2

A

Meiosis

57
Q

Parent cell: 2n diploid

A

Meiosis

58
Q

Daughter cells: 4
1 n-not identical to parent cell-called gametes, germ cells, sex cells

A

Meiosis

59
Q

Reproductive cells

A

Meiosis

4 Midterm (10 decks)

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