Cell Cycle and Cell Division

Chapter 3 Lesson 1

p.84-94

Vocabulary

• Cell Cycle

• Interphase

• Sister chromatid

• Centromere

• Mitosis

• Cytokinesis

• Daughter cell

Outline

• Intro to Cell Cycle– Phases– Length

• Interphase– G1– S– G2

• Mitotic Phase– Mitosis

• Prophase, Metaphase, Anaphase, Telophase– Cytokinesis

• Results of Cell Division– Reproduction, Growth, Replacement, Repair

Main Ideas

• All living organisms are composed of cells.

• Cells divide to increase their numbers through a process of mitosis, which results in two daughter cells with identical sets of chromosomes.

Cell Cycle 6 phases

• Interphase (G1, S, G2)

• Mitosis– Prophase– Metaphase– Anaphase

– Telophase

• Cytokinesis

Mitotic Phase

Drawthe Complete

Cell Cycle

Introduction

• Most cells in an organism go through a cycle of growth, development, and division

• Goal: Grow, develop, replace old or damaged cells, produce new cells

Introduction

• Most cells in an organism go through a cycle of growth, development, and division

• Goal: Grow, develop, replace old or damaged cells, produce new cells

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Interphase

THE CELL:• grows to it’s mature size• makes a _____ of its DNA• prepares to _______ into two cells

Copy

Divide

G1

S

G2

Chromatin

Organelle Replication

• Some organelles have their own DNA– Chloroplast and mitochondria

– Make copies of themselves on their own

The Mitotic Phase

•2 Phases:–Mitosis and Cytokinesis

•Results:–2 daughter cells

Mitosis

• Prophase -

• Metaphase -

• Anaphase -

• Telophase -

Pro

Meta

Ana

Telo

The DNA condenses

Chromosome Structure

Cytokinesis