Cell Cycle: Significant Events and Phases

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Questions and Answers

What event occurs during cytokinesis in the cell cycle?

  • Formation of spindle fibers
  • Disappearance of nucleolus
  • Distribution of organelles and macromolecules (correct)
  • Attachment of chromosomes into the spindle fibers

Which phase of the cell cycle involves the synthesis of proteins, lipids, and carbohydrates?

  • Quiet Phase (G0)
  • Gap 2 (G2)
  • Synthesis (S)
  • Gap 1 (G1) (correct)

What is the main function of the checkpoints in the cell cycle?

  • Halting protein synthesis
  • Preventing DNA synthesis
  • Promoting apoptosis
  • Ensuring chromosomes are properly replicated and distributed (correct)

Which event marks the beginning of mitosis proper in the cell cycle?

<p>Coiling of DNA (D)</p> Signup and view all the answers

During which phase of the cell cycle does apoptosis occur?

<p>Quiet Phase (G0) (D)</p> Signup and view all the answers

What is the role of cleavage furrow in cell division?

<p>Separation of the two daughter cells (A)</p> Signup and view all the answers

What is the main function of the DNA Damage Checkpoint?

<p>Temporarily pauses the cell cycle for DNA repair (D)</p> Signup and view all the answers

Which protein is involved in the Apoptosis Checkpoint?

<p>Survivins (D)</p> Signup and view all the answers

What is the function of Telomerase in relation to telomeres?

<p>Prevents telomere shortening (B)</p> Signup and view all the answers

Why do most cancer cells arise according to the text?

<p>Mutation leading to improper protein production (C)</p> Signup and view all the answers

What is the role of Spindle Assembly Checkpoint in cell division?

<p>Ensures chromosomes are properly attached to spindle fibers (C)</p> Signup and view all the answers

How does the Apoptosis Checkpoint affect cell fate?

<p>Causes cells to undergo apoptosis if survivins message is not received (B)</p> Signup and view all the answers

What is the role of caspases in apoptosis?

<p>Destroy enzymes that replicate or repair DNA (C)</p> Signup and view all the answers

Which process is responsible for dismantling cell remnants or blebs after apoptosis?

<p>Cytokinesis (A)</p> Signup and view all the answers

What is the characteristic chromosome number of cells produced by Meiosis II?

<p>23 chromosomes (D)</p> Signup and view all the answers

During which phase of Meiosis does synapsis occur?

<p>Prophase (A)</p> Signup and view all the answers

What effect does apoptosis have on a cell's ability to adhere to other cells?

<p>It abolishes the cell's activity to adhere to other cells (A)</p> Signup and view all the answers

What is the primary function of meiosis in cell division?

<p>Producing gametes with unique genetic information (C)</p> Signup and view all the answers

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