Cell Cycle Review Questions

Cell Cycle Overview

• The cell cycle represents the life cycle of a eukaryotic cell and concludes with cell division.

Main Components of the Cell Cycle

• Comprises two key components: interphase and the mitotic stage.

Interphase Details

• Interphase includes periods of cellular growth, DNA replication, and centriole formation.

Stages of Interphase

• Consists of three stages:
  • G1 phase: First growth phase where the cell enlarges.
  • S phase: Synthesis phase focused on DNA replication.
  • G2 phase: Second growth stage preparing for mitosis.

S Stage Significance

• The primary purpose of the S stage is to ensure accurate DNA replication.

Mitotic Stage Events

• The mitotic stage consists of two significant processes: mitosis and cytokinesis.

Cancer Definition

• Cancer is characterized by an accelerated cell cycle leading to uncontrolled cell division.

Major Phases of the Cell Cycle

• Two major phases: interphase and the mitotic phase.

Importance of Pre-DNA Replication Growth

• Cellular growth prior to DNA replication ensures sufficient DNA quantity for accurate replication.

Events of the S Phase

• Cells undergo DNA replication during the S phase of the cell cycle.

Mitosis Process

• Mitosis involves the division of the nucleus, where replicated chromosomes are distributed into two daughter nuclei.

Role of Spindle Fibers

• Spindle fibers attach to the centromeres of chromosomes and aid in separating them during cell division.

Meiosis Function

• The primary function of meiosis is to generate gametes for sexual reproduction.