Pre – AP Biology The Cell Cycle (1.5) Part 1. One cell becoming two.

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Presentation transcript:

Pre – AP Biology The Cell Cycle (1.5) Part 1

One cell becoming two

Chromatin vs. Chromosomes appearance within the cell.

DNA coiling up using histones

Chromosome Duplication The DNA is replicated during the S phase

Pre – AP Biology The Cell Cycle (1.5) Part 2

Interphase

Interphase cell (Look at the chromatin in the nucleus.)

Starting Mitosis

Cell in Prophase

Second half of Mitosis Can you “see” the phases in the name?

Cell in Metaphase

Cell in Anaphase

Cell in Telophase

Spindle Apparatus and Motor protein “walking” the chromosomes

Can you find the different phases in this onion root tip?

Animal vs. Plant cytokinesis

Binary Fission in Bacteria

Pre – AP Biology The Cell Cycle (1.5) Part 3

Checkpoints (Is all going according to plan?)

Density-dependent inhibition Notice how the mass begins to grow because cancerous cells ignore density

Benign Tumor

Malignant cancer cells from the breast (See the ABNORMAL “crab” shape of the cells.)