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What is Interphase?
The active preparation for cell division
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What are the phases of Mitosis in order?
Prophase, Metaphase, Anaphase, and Telophase
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How does a cell prepare for cell division?
Increases its size and makes a copy of its' DNA
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What does G1 stand for in interphase stage of the cell cycle?
Gap 1 or presynthesis
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What does S stand for in interphase stage of the cell cycle?
Synthesis
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What does G2 stand for in the interphase stage of the cell cycle?
Gap 2 or postsynthesis
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What does the M stand for in the cell cycle?
Mitotic division phase
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What type of cell does NOT have centrosomes?
Plant cells
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What disappears during Prophase?
Nucleolus
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What disappears at the end of Prophase?
Nuclear envelope
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How many chromosomes are in the human cell?
46 (23 pairs)
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What type of reproduction is mitosis?
Asexual reproduction
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What type of reproduction is meiosis?
Sexual reproduction
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What does G0 indicate in the cell cycle?
cell activity that only occurs in G1
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What is the central area where 2 chromatid sisters connect to form 1 chromosome?
Centromere
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What is Cytokinesis?
The division of everything else in the cell
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How many chromosomes does an egg and sperm each have?
23 chromosomes
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How does an aster form?
Microtubules extend from the centrosomes radially to form an aster
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During what stage of mitosis do spindle fiber attach to the kinetochores of the chromosomes?
Metaphase
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During what stage of mitosis do chromatids seperate at their centromeres?
Anaphase
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During what stage of mitosis does 1 group of chromosomes move toward each pole?
Anaphase
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During what stage of mitosis does the nuclei reform and cell division is complete as cytokinesis produces 2 daughter cells?
Telophase
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During Interphase, what is the only difference between daughter cells and the parent cells?
It is smaller in size
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During what stage of mitosis do chromosomes line up along the equatorial plane of the cell?
Metaphase
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During what stage of mitosis do spindles form between the centrioles which have moved to the poles of the cell?
Prophase (Late)
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During what stage of mitosis do chromosomes continue to shorten and thicken?
Prophase (Late)
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During what stage of mitosis do long thread-like bodies of chromatin become evident and begin to condense as visible chromosomes?
Prophase (Early)
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What period of Interphase are chromosomes replicated?
S phase
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What are the phases of Interphase in order?
Mitotic Division (M),Presynthesis (G1), Synthesis (S), and Postsynthesis (G2)
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The timing of the cell cycle in eukaryotic cells is controlled by a group of closely related proteins called what?
Cyclins
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What is the period of Interphase in which DNA replication is completed and the cell is ready to begin the process of cell division?
Postsynthesis (G2)
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Are there tetrads in mitosis?
No
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What are polar fibers?
Spindle microtubules that extend from 2 poles of a dividing cell
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What is another word for a non-sex cell?
Somatic cell
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What kind of cells make up most of the cells in the human body?
Somatic cells (Non-sex cells)
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During what stage of the cell cycle are protein tublin produced?
Interphase
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What is the purpose of mitosis?
To turn dyads into unduplicated DNA
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What is kinetochore?
protein found in chromatid that attach to microtubules
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What is binary fission?
The process in which prokaryotic cells reproduce asexually
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In animal cells, cytokineses is carried out through what?
Cleavage furrow
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In plant cells, cytokinesis is carried out through what?
Cell plate
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If their are 12 chromatids, how many diploids are there?
12
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