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Biology Chapter 12 > Bio12.0&12.1 > Flashcards

Bio12.0&12.1 Flashcards

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1
Q

The contunuity of life is based on the reproduction of cells, or ____ ______.

A

Cell division

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2
Q

In unicellular organisms, division of once cell reproduces the ___ _____

A

Entire organism

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3
Q

What three aspects do multicellular eukaryotes depend on cell division for?

A

Development from fertilized cell, growth, repair

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4
Q

Cell cycle

A

The life of a cell from formation to its own division

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5
Q

Most cell division reality in …?

A

Genetically identical daughter cells

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6
Q

What is a special type of cell division that can produce sperm an egg cells?

A

Meiosis

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7
Q

All the DNA in a cell constitutes the cell’s

A

Genome

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8
Q

DNA molecules in a cell are packages into ___

A

Chromosomes

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9
Q

A complex of DNA and protein that condenses during cell division?

A

Chromatin

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10
Q

What cells have two sets of chromosomes and are non reproductive?

A

Somatic cells

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11
Q

What cells have half as many chromosomes as non reproductive cells. Ex) reproductive cells: sperm and eggs

A

Gametes

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12
Q

Joined copies of the original chromosome

A

Sister chromatids

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13
Q

Each duplicated chromosome has two

A

Sister chromatids

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14
Q

The narrow “waist” of the duplicated chromosome, where the chromatids are mostly attactched?

A

Centromere

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15
Q

Highly condensed, duplicated human chromosome

A

SEM

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16
Q

During cell division, the two sister chromatids of each duplicated chromosome …

A

Separate and move into two nuclei

17
Q

Mitosis

A

The division of the genetic material in the nucleus

18
Q

Gametes are produced by a variation of cell division called ____?

A

Meiosis

19
Q

What does meiosis yield?

A

Nonidentical daughter cells that have half as many chromosomes as the parent cell

20
Q

The mitotic phase alternates with what in the cell cycle?

A

Interphase

21
Q

The cell cycle consists of …?

A

Mitotic (M) phase (mitosis and cytokinesis), interphase

22
Q

What is interphase?

A

Cell growth and copying of chromosomes in preparation for cell division

Biology Chapter 12 (6 decks)

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