10.2 The Process of Cell Division - Free Printable

The uploaded image contains a lesson summary on "The Process of Cell Division" (Section 10.2). It outlines key concepts such as chromosomes, the cell cycle, mitosis, and cytokinesis. Since there is no specific question or problem to solve in the image, I will summarize the main points covered in this section to help reinforce your understanding.

Key Concepts Summary:

#### 1. Chromosomes
- Chromosomes are packages of DNA that hold genetic information.
- In prokaryotes: One circular strand of DNA.
- In eukaryotes: Highly organized structures with DNA wrapped around histone proteins forming chromatin.
- Chromosomes ensure accurate separation of DNA during cell division.

#### 2. The Cell Cycle
This is the series of events for growth and division of a cell.

- Prokaryotic cell cycle: Grows → duplicates DNA → divides by pinching membrane.
- Eukaryotic cell cycle has four stages:
- G₁ phase: Cell grows.
- S phase: DNA replication occurs.
- G₂ phase: Organelles and materials for division are made.
- M phase: Includes mitosis (nucleus division) and cytokinesis (cytoplasm division).

> Note: The first three phases (G₁, S, G₂) together are called interphase.

#### 3. Mitosis – Division of the nucleus; happens in 4 stages:

- Prophase: Genetic material condenses, spindle forms, nuclear envelope breaks down.
- Metaphase: Duplicated chromosomes line up at center; spindle fibers attach to centromeres.
- Anaphase: Sister chromatids separate and move toward opposite poles.
- Telophase: Chromosomes unwind, nuclear envelopes reform.

#### 4. Cytokinesis – Division of cytoplasm

- In animal cells: Membrane draws inward and pinches off.
- In plant cells: A cell plate forms → becomes new cell membrane → then new cell wall forms.

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Final Answer:
This page summarizes how cells divide through the cell cycle, including chromosome structure, interphase, mitosis (prophase, metaphase, anaphase, telophase), and cytokinesis differences between plant and animal cells.