Cell cycle Flashcards

1
Q

what is the eukaryotic cell cycle?

A

Cell replication (mitosis) involves a single cell dividing into two genetically identical daughter cells.
For cells to divide they must undergo the cell cycle

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2
Q

what are the sections of interphase?

A
  • G1 phase: Cell grows larger, organelles replicate
    • G0 phase (not all cells): resting state
    • S phase: Nucleus and DNA is replicated
      G2 phase: Cell grows larger and increases energy stores
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3
Q

what are the sections of mitosis?

A
  • Prophase: Chromosomes condense, centrosomes move to opposite poles of the cell, nuclear membrane breaks down, spindle fibres begin forming
    • Metaphase: Chromosomes line up along the equator of the cell, spindle fibres attach to centromere.
    • Anaphase: Spindle fibres contract, splitting chromosomes by their centromere to opposite ends of the cell

Telophase: Chromosomes decondense, nuclear membranes form, spindle fibres disassemble.

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4
Q

How does cytokineses occur in plant cells?

A

Cell plate begins to form along the midline of the parent cell, dividing the two cells

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5
Q

How does cytokineses occur in animal cells?

A

the plasma membrane pinches in to form a cleavage furrow which extends until the cell separates

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