Prokaryote vs. Eukaryote

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How can you tell the difference between a prokaryote and eukaryote cell?

What do our cells need to do to sustain life?

M phase

G2 phase

S phase

G1 phase

The Cell Cycle

Mitosis is the dividing phase of the cell cycle There are four steps and one dividing period

Cell Division

Centrioles

Chromatin

Interphase

Nuclear envelope

Cytokinesis

Nuclear envelope reforming

Telophase

Anaphase

Individual chromosomes

Metaphase

Centriole

Spindle

CentrioleChromosomes

(paired chromatids)

Prophase

Centromere

Spindle forming

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Mitosis

Centrioles

Chromatin

Interphase

Nuclear envelope

Cytokinesis

Nuclear envelope reforming

Telophase

Anaphase

Individual chromosomes

Metaphase

Centriole

Spindle

CentrioleChromosomes

(paired chromatids)

Prophase

Centromere

Spindle forming

Section 10-2

Figure 10–5 Mitosis and Cytokinesis

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a. Prophase: DNA condenses into chromosomes & the nuclear envelope breaks down

Centrioles

Chromatin

Interphase

Nuclear envelope

Cytokinesis

Nuclear envelope reforming

Telophase

Anaphase

Individual chromosomes

Metaphase

Centriole

Spindle

CentrioleChromosomes

(paired chromatids)

Prophase

Centromere

Spindle forming

Figure 10–5 Mitosis and Cytokinesis

b. Metaphase: Chromosomes line up across the center of the cell

Centrioles

Chromatin

Interphase

Nuclear envelope

Cytokinesis

Nuclear envelope reforming

Telophase

Anaphase

Individual chromosomes

Metaphase

Centriole

Spindle

CentrioleChromosomes

(paired chromatids)

Prophase

Centromere

Spindle forming

Figure 10–5 Mitosis and Cytokinesis

c. Anaphase: Sister chromatids are pulled to opposite ends of the cell

Centrioles

Chromatin

Interphase

Nuclear envelope

Cytokinesis

Nuclear envelope reforming

Telophase

Anaphase

Individual chromosomes

Metaphase

Centriole

Spindle

CentrioleChromosomes

(paired chromatids)

Prophase

Centromere

Spindle forming

Figure 10–5 Mitosis and Cytokinesis

d. Telophase: chromosomes loosen up and the nuclear envelope reforms around each cluster of chromatids

Centrioles

Chromatin

Interphase

Nuclear envelope

Cytokinesis

Nuclear envelope reforming

Telophase

Anaphase

Individual chromosomes

Metaphase

Centriole

Spindle

CentrioleChromosomes

(paired chromatids)

Prophase

Centromere

Spindle forming

Figure 10–5 Mitosis and Cytokinesis

e. Cytokinesis: the cell splits into 2 identical cells