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Biology > Cell division 1 > Flashcards

Cell division 1 Flashcards

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1
Q

Why do cells divide

A

Growth, repair, and reproduction

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2
Q

Where does an animal cell divide

A

A cleavage furrow

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3
Q

Where do plant cells divide

A

A cell plate

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4
Q

What are the parts of interphase

A

G1, S, and G2

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5
Q

How do prokaryotes reproduce

A

Binary fission; the cell simply splits in 2

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6
Q

What is the order of the phases of mitosis

A

Prophase, metaphase, anaphase, telophase and cytokinesis

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7
Q

What form is DNA in when its in the nucleus

A

Chromatin

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8
Q

What happens to chromatin when it condenses before cell division

A

It turns into chromosomes

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9
Q

How many chromosomes do humans have in each cell

A

46

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10
Q

What are the parts of a chromosome

A

The short arm, the long arm, the centromere, and the chromatid

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11
Q

What are the 2 main parts of the cell cycle

A

Interphase and mitosis

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12
Q

What is G1

A

The cell grows and carries out normal functions

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13
Q

What is S phase

A

Synthesis/reproduction of the cell

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14
Q

What is G2

A

The cell grows, carries out normal functions, and prepares to divide

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15
Q

What is mitosis

A

Division of the nucleus and chromosomes

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16
Q

What is the prophase

A

Chromatin condenses and forms chromosomes, nuclear envelope breaks down and nucleolus disappears, spindle fibers form

17
Q

What is metaphase

A

Chromosomes line up in the middle of the cell, sister chromatids attach to a spindle fiber at the centromere

18
Q

What is anaphase

A

Centromeres split, sister chromatids separate, cell stretches out, chromatids move to opposite sides of the cell

19
Q

What is telophase

A

Chromosomes begin to uncoil, new nuclear envelope forms around each chromosome region (the last phase of mitosis)

20
Q

What is cytokinesis

A

In animal cells the cell pinches together and splits at a cleavage furrow, in plant cells a cell plate will form to divide the 2 daughter cells

Biology (9 decks)

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