Chapter 3

Chapter 3

From a Cell to an Organism

Cell Cycle - Most cells in an organism go through a cycle of growth, development, and division.

Phases of the Cell Cycle

Interphase - part of the cell cycle that includes

the cell's growth and development

A cell spends most of the time in Interphase

Interphase has 3 stages

1. rapid growth and replication of the organelles 2. copying of DNA 3. preparation for cell division

During interphase DNA of the cell is copied.

Sister chromatids - two identical chromosomes, that make up a duplicated chromosome

Centromere - the center structure that holds the sister chromatids together

Mitotic Phase - cell reproduces during this stage

mitosis - nucleus divides cytokinesis - cytoplasm divides

At the end of this stage, 2 new identical cells called Daughter Cells

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