Question

1. create a table to summarize what happens during the three stages of the cell cycle. use the back of this page.

Explanation:

To solve this, we'll create a table summarizing the three main stages of the cell cycle (Interphase, Mitosis, Cytokinesis) and their key events.

Step 1: Identify the three stages of the cell cycle

The three main stages of the cell cycle are:

1. Interphase
2. Mitosis (M phase)
3. Cytokinesis

Step 2: Determine the key events in each stage

• Interphase: This is the longest phase of the cell cycle and is divided into three subphases: G₁ (Gap 1), S (Synthesis), and G₂ (Gap 2).
• G₁ Phase: The cell grows, carries out normal metabolic functions, and prepares for DNA replication.
• S Phase: DNA replication occurs, resulting in the duplication of the cell's genetic material.
• G₂ Phase: The cell continues to grow, synthesizes proteins and organelles needed for cell division, and checks for errors in DNA replication.
• Mitosis: This is the phase where the nucleus divides. It is divided into four subphases: Prophase, Metaphase, Anaphase, and Telophase.
• Prophase: Chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the spindle apparatus forms.
• Metaphase: Chromosomes line up along the equator (metaphase plate) of the cell, and spindle fibers attach to the centromeres of the chromosomes.
• Anaphase: Sister chromatids separate and are pulled to opposite poles of the cell by the spindle fibers.
• Telophase: Chromosomes reach the poles, the nuclear envelope reforms around each set of chromosomes, and the chromosomes decondense.
• Cytokinesis: This is the phase where the cytoplasm divides, resulting in two daughter cells. In animal cells, a cleavage furrow forms and pinches the cell into two. In plant cells, a cell plate forms between the two daughter nuclei, which eventually develops into a new cell wall.

Step 3: Create the table

Stage of Cell Cycle	Key Events
Mitosis	- Prophase: Chromatin → chromosomes, nuclear envelope breakdown, spindle formation<br>- Metaphase: Chromosomes align at metaphase plate, spindle attachment<br>- Anaphase: Sister chromatids separate, move to poles<br>- Telophase: Chromosomes at poles, nuclear envelope reforms, chromosomes decondense
Cytokinesis	- Cytoplasm divides<br>- Animal cells: Cleavage furrow pinches cell<br>- Plant cells: Cell plate forms → new cell wall

This table provides a concise summary of the events occurring during each stage of the cell cycle.

Answer:

To solve this, we'll create a table summarizing the three main stages of the cell cycle (Interphase, Mitosis, Cytokinesis) and their key events.

Step 1: Identify the three stages of the cell cycle

The three main stages of the cell cycle are:

1. Interphase
2. Mitosis (M phase)
3. Cytokinesis

Step 2: Determine the key events in each stage

• Interphase: This is the longest phase of the cell cycle and is divided into three subphases: G₁ (Gap 1), S (Synthesis), and G₂ (Gap 2).
• G₁ Phase: The cell grows, carries out normal metabolic functions, and prepares for DNA replication.
• S Phase: DNA replication occurs, resulting in the duplication of the cell's genetic material.
• G₂ Phase: The cell continues to grow, synthesizes proteins and organelles needed for cell division, and checks for errors in DNA replication.
• Mitosis: This is the phase where the nucleus divides. It is divided into four subphases: Prophase, Metaphase, Anaphase, and Telophase.
• Prophase: Chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the spindle apparatus forms.
• Metaphase: Chromosomes line up along the equator (metaphase plate) of the cell, and spindle fibers attach to the centromeres of the chromosomes.
• Anaphase: Sister chromatids separate and are pulled to opposite poles of the cell by the spindle fibers.
• Telophase: Chromosomes reach the poles, the nuclear envelope reforms around each set of chromosomes, and the chromosomes decondense.
• Cytokinesis: This is the phase where the cytoplasm divides, resulting in two daughter cells. In animal cells, a cleavage furrow forms and pinches the cell into two. In plant cells, a cell plate forms between the two daughter nuclei, which eventually develops into a new cell wall.

Step 3: Create the table

Stage of Cell Cycle	Key Events
Mitosis	- Prophase: Chromatin → chromosomes, nuclear envelope breakdown, spindle formation<br>- Metaphase: Chromosomes align at metaphase plate, spindle attachment<br>- Anaphase: Sister chromatids separate, move to poles<br>- Telophase: Chromosomes at poles, nuclear envelope reforms, chromosomes decondense
Cytokinesis	- Cytoplasm divides<br>- Animal cells: Cleavage furrow pinches cell<br>- Plant cells: Cell plate forms → new cell wall

This table provides a concise summary of the events occurring during each stage of the cell cycle.