CELL DIVISION. Cell Life Cycle Two major periods: 1. Interphase: cell grows and undergoes usual activities 2. Cell division: cell reproduces asexually.

CELL DIVISION

Cell Life Cycle

Two major periods:1. Interphase: cell grows and undergoes usual

activities2. Cell division: cell reproduces asexually

Prepare: DNA Replication

DNA helix uncoils and separates into 2 nucleotide chains

Each chain acts as a template for building a new nucleotide strand

Complementary pairing of nucleotide bases

DNA Replication

Cell Division

Mitosis: Refers to process of replication of the genetic material and the nucleus

Interphase:

Cell is just living

Growing and normal metabolic processes

At the END of interphase: replication of chromosomes

Replication of centriole (centrosome)

Chromosome

Prophase:

Centrioles separate and begin to move to opposite sides

Nuclear envelope breaks apart

Mitotic spindle forms (microtubules)

Prophase:

Spindle fiber attaches to centromeres

Also begin to PUSH

Metaphase:

Aligning of chromosomes at center

Everything lines up

Anaphase:

Microtubules pull chromosomes apart and to opposite sides

Also work to push cell apart

Telophase:

Chromosomes uncoil

Formation of nuclear envelope

MITOSIS DONE

Cytokinesis

At the very end of telophase

Formation of cleavage furrow (microfilaments)

Both cells back to interphase

Cell Division

IPMAT Interphase Prophase Metaphase Anaphase Telophase

Cell Division Packet

Groups of 4 or 5

Each group member must draw out and label assigned event of cell division (IPMAT)

Staple the sheets in order

Write your name on your specific sheet