Topic 4: Cell Cycle - For Growth and Repair + Interphase Flashcards

1
Q

What is the general result in the cell cycle?

A
  • to turn a somatic “parent” cell (2n) to 2 identical somatic “daughter” cells (2n)
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2
Q

What are the two stages of the cell cycle?

A
  • interphase
  • mitotic (M) / cell division phase
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3
Q

What stages occur in interphase, and what does the cell still do despite being in this stage? (3)

A
  • G1, S G2 phase
  • chromosomes present as chromatin
  • normal cellular metabolic activities occurring (ie. protein synthesis)
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4
Q

What occurs in the G1 phase? (3)

A
  • growth
  • metabolism
  • centrosome replication begins
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5
Q

What is the G0 phase? (2)

A
  • some cells do not divide again once they mature
  • remain permanently in G1
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6
Q

What occurs in the S phase of interphase? (4)

A
  • chromosomes replicate, but are still present as chromatin (not individually visible)
  • ALWAYS occurs before division (mitosis and meiosis)
  • replicates are called sister chromatids
  • kinetochore proteins are produced and attach to each centromere to form the kinetochore
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7
Q

What is the area called in which sister chromatids are attached to each other?

A
  • centromere
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8
Q

What is a kinetochore? (2)

A
  • a protein and DNA complex, 1 chromatid
  • site of attachment of spindle microtubules
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9
Q

What occurs in the G2 phase of interphase? (2)

A
  • growth and metabolism
  • production of enzymes and other proteins needed for cell division
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