Cell Cycle and Division Review 2015

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Slide1:

c ell c ycle and c ellular d ivision review https://www.youtube.com/watch?v=Q6ucKWIIFmg

Student Goals:

Student Goals Explain the parts of the cell cycle. Identify the steps and events of each cell phase.

The Cell cycle :

The Cell cycle

The Cell cycle :

The Cell cycle

The Cell cycle :

The Cell cycle

Slide6:

Your cell goes through a cycle.

Slide7:

Your cell goes through a cycle. Growth

Slide8:

Your cell goes through a cycle. Growth DNA replication

Slide9:

Your cell goes through a cycle. Growth DNA replication Check, some growth

Slide10:

Your cell goes through a cycle. Growth DNA replication Check, some growth Interphase

Slide11:

Your cell goes through a cycle. Growth DNA replication Check, some growth Cell division (Mitosis) (Shortest)

Slide12:

Recall : Cell Division: when one cell divides into two identical cells is called… ________ Mitosis

Slide13:

chromosomes

Slide14:

Humans have _____ chromosomes in their cells. ____ Pairs. Not sex cells which will be discussed later during meiosis. 46 23

Slide15:

DNA plus proteins is called_____________. One half of a duplicated chromosome is a _________. Sister chromatids are held together at the __________. _________ protect DNA and do not include genes. Anatomy of a C h r o m o s o m e chromatin chromatid centromere Telomeres telomere centromere telomere chromatid

Slide16:

Interphase Prophase Metaphase Anaphase Telophase Cell division consists of Interphase and 4 phases of Mitosis:

Slide17:

Although mitosis is discussed as different stages, the process is generally continuous.

Interphase “Interesting things happen!” The cell prepares for division:

I nterphase “ Interesting things happen!” The cell prepares for division Interphase: Most of cell cycle (90 %) DNA replicated Organelles copied Cell increases in size Nucleus intact

Prophase “Chromosomes Pair up!” :

Prophase “ Chromosomes Pair up!” Packages DNA into chromosomes Spindle fibers form. 1. 2.

Metaphase “Chromosomes in the Middle!”:

Metaphase “ Chromosomes in the M iddle !” Chromosomes line up at the center of the cell Spindle fibers attach from daughter cells to chromosomes at the centromere 2 . 1.

In Anaphase Chromosomes get pulled APART :

In Anaphase Chromosomes get pulled APART Spindle fibers pull chromosomes apart ½ of each chromosome (called chromotid ) moves to each daughter cell \ 1 . 2 .

Telophase The cytoplasm divides into Two:

Telophase The cytoplasm divides into T wo DNA spreads out 2 nuclei form Cell wall pinches in and forms a Cleavage Furrow. New cell wall forms between nuclei to form the 2 new daughter cells

Slide23:

Cytokinesis : Cell breaks into two.

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