Cell Cycle Review Questions

Questions and Answers

What is the cell cycle?

The cell cycle is the life cycle of a eukaryotic cell which ends with cell division.

What are the two main components of the cell cycle?

The two main components of the cell cycle are interphase and the mitotic stage.

What occurs during interphase?

During interphase, the cells undergo periods of growth, make copies of its DNA, and begin to form the centrioles.

What are the three stages of interphase?

The three stages of interphase are the G1 phase (the first growth stage), the S stage (the synthesis stage), and G2 (the second growth stage). Signup and view all the answers

What is the main point of the S stage?

The main point of the S stage is to replicate DNA. Signup and view all the answers

Describe the main events of the mitotic stage.

The two main events of the mitotic stage are mitosis and cytokinesis. Signup and view all the answers

Define cancer.

Cancer is a disease in which the cell cycle occurs too quickly and the cell divides uncontrollably. Signup and view all the answers

What are the major phases of the cell cycle?

The major phases of the cell cycle are interphase and the mitotic phase. Signup and view all the answers

Why is it important for a cell to grow before it replicates its DNA?

It is important for a cell to grow before it replicates its DNA because the smaller the cell, the less DNA there is, therefore, there will not be enough DNA to be replicated. Signup and view all the answers

What happens during the S phase of the cell cycle?

During the S phase of the cell cycle, cells replicate their DNA. Signup and view all the answers

What happens during mitosis?

During mitosis, the division of the nucleus occurs and the replicated chromosomes are distributed to two daughter nuclei. Signup and view all the answers

What is the function of spindle fibers?

Spindle fibers attach to centromeres on the chromosomes and pull the chromosomes apart during cell division. Signup and view all the answers

What is the function of meiosis?

The function of meiosis is to produce gametes. Signup and view all the answers

Study Notes

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.

Description

This quiz covers essential concepts of the cell cycle, including its definition and key components such as interphase and the mitotic stage. Ideal for students seeking to reinforce their understanding of cell biology. Test your knowledge and explore more about the life cycle of eukaryotic cells.