Write Cell Division Write Please Know these Words

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Write Cell Division

Write Cell Division

Write Please Know these Words for the Test • Isotonic • Stay the same

Write Please Know these Words for the Test • Isotonic • Stay the same • Biologist • specialist in the study of life • Cytology • study of cells • Telescope • Instrument used to view large distances • Epidermis • Above the skin

Listen Why do cells divide? 1. Reproduction 2. Growth and Development - all multi-cell

Listen Why do cells divide? 1. Reproduction 2. Growth and Development - all multi-cell creatures start out as a single cell 3. Repair and Replacement - millions of our cells die and are replaced every second of every day

Listen Building a Chromosome • Chromosome • • Chromatin • Nucleosome • DNA 3.

Listen Building a Chromosome • Chromosome • • Chromatin • Nucleosome • DNA 3. Chromatin packs together to become chromosomes 2. Nucleosomes pack together to become chromatin 1. DNA is wound around the protein histone

Listen Haploid Vs. Diploid 2(N) Total Number of Chromosomes: 10 Sets of Chromosomes(Ploidy): 2

Listen Haploid Vs. Diploid 2(N) Total Number of Chromosomes: 10 Sets of Chromosomes(Ploidy): 2 Number of Chromosomes in each Set: 5 Haploid 1(N) Total Number of Chromosomes: 5 Sets of Chromosomes(Ploidy): 1 Number of Chromosomes in each Set: 5

Listen How do we know when Cell Division Occurs? G 1 Phase Te lo

Listen How do we know when Cell Division Occurs? G 1 Phase Te lo ph as e Anaphase S Phase se ha p a t Me Pr op ha se • A series of events that take place in eukaryotic cells leading to their division and duplication sis ne o ki Cyt • Cell Cycle G 2 Phase

Write The Two Major Phases of the Cell Cycle • Interphase • The resting

Write The Two Major Phases of the Cell Cycle • Interphase • The resting phase between mitosis or meiosis Cytokinesi s • M Phase • The phase where mitosis (or meiosis) and cytokinesis occurs. G 1 Phase Telophase S Phase Anaphas e Metaphase Prophase G 2 Phase

Listen What are three phases of Interphase? • G 1 – Gap 1 –

Listen What are three phases of Interphase? • G 1 – Gap 1 – Phase • Gap 1 phase – cell gets larger and prepares for mitosis G 1 Phase S Phase • S Phase • Synthesis phase – DNA makes a copy of itself • G 2 – Gap 2 – Phase • Gap 2 phase - final preparation for mitosis G 2 Phase

Listen S Phase and Chromosomes Original Chromatid Copied Chromatid Chromosome

Listen S Phase and Chromosomes Original Chromatid Copied Chromatid Chromosome

Listen Chromosome Vocabulary • Centromere • The part on the chromosome that connects the

Listen Chromosome Vocabulary • Centromere • The part on the chromosome that connects the two chromatids together Original Chromatid Copied Chromatid Chromosome

Listen Chromosome Vocabulary • Kinetechore • Attachment point for spindle fibers Original Chromatid Copied

Listen Chromosome Vocabulary • Kinetechore • Attachment point for spindle fibers Original Chromatid Copied Chromatid Chromosome

Listen Mitosis Organelles Vocabulary • Centriole • An organelle that organizes the spindle fibers

Listen Mitosis Organelles Vocabulary • Centriole • An organelle that organizes the spindle fibers that assist in mitosis and cytokinesis. • Spindle Fibers • Filaments that attach to a kinetechore and pulls the two chromatids apart.

Listen Chromosome Structure Spindle Fibers Centromere Centriole Kinetechore Original Chromatid Copied Chromatid Chromosome

Listen Chromosome Structure Spindle Fibers Centromere Centriole Kinetechore Original Chromatid Copied Chromatid Chromosome

Write What are the two phases of MPhase? • Mitosis • The process wherein

Write What are the two phases of MPhase? • Mitosis • The process wherein the nucleus divides into two nuclei Cytokinesis G 1 Phase Telophase S Phase Anaphas e • Cytokinesis • The process wherein a cell divides into two daughter cells Metaphase Prophase G 2 Phase

Listen What are the Four Phases of Mitosis? • Prophase • Metaphase • Anaphase

Listen What are the Four Phases of Mitosis? • Prophase • Metaphase • Anaphase • Telophase P M A T Cytokinesis G 1 Phase Telophase S Phase Anaphase Metaphase Prophase G 2 Phase

Listen M-Phase: Mitosis and Cytokinesis 2 N

Listen M-Phase: Mitosis and Cytokinesis 2 N

G 1 - The cell is going about its daily business of making energy,

G 1 - The cell is going about its daily business of making energy, protein and preparing for Mitosis. Interphase Listen Chromatin S - The DNA is replicated G 2 - Final Preparations for M Phase are made Interphase G 1 S G 2 Father Original DNA Mother Original DNA Father DNA Copy Mother DNA Copy

Listen 1. The Chromatin winds itself up into chromosomes. 2. The nuclear envelope dissolves.

Listen 1. The Chromatin winds itself up into chromosomes. 2. The nuclear envelope dissolves. M Phase Mitosis Prophase

Draw and Write 1. The Chromatin winds itself up into chromosomes. 2. The nuclear

Draw and Write 1. The Chromatin winds itself up into chromosomes. 2. The nuclear envelope dissolves. M Phase Mitosis Prophase

1. The chromosomes line up vertically along the center of the cell M Phase

1. The chromosomes line up vertically along the center of the cell M Phase Mitosis Metaphase

Draw and Write 1. The chromosomes line up vertically along the center of the

Draw and Write 1. The chromosomes line up vertically along the center of the cell M Phase Mitosis Metaphase

1. The Centriole releases spindle fibers that attach to the Kinetochores 2. The spindle

1. The Centriole releases spindle fibers that attach to the Kinetochores 2. The spindle fibers pull the Chromatids apart. 3. The spindle fibers disappear. M Phase Mitosis Anaphase

Draw and Write 1. The Centriole releases spindle fibers that attach to the Kinetochores

Draw and Write 1. The Centriole releases spindle fibers that attach to the Kinetochores 2. The spindle fibers pull the Chromatids apart. 3. The spindle fibers disappear. M Phase Mitosis Anaphase

1. The nuclear envelope develops around the chromosomes. 2. The chromosomes unwind back into

1. The nuclear envelope develops around the chromosomes. 2. The chromosomes unwind back into Chromatin M Phase Mitosis Telophase

Draw and Write 1. The nuclear envelope develops around the chromosomes. 2. The chromosomes

Draw and Write 1. The nuclear envelope develops around the chromosomes. 2. The chromosomes unwind back into Chromatin M Phase Mitosis Telophase

 • The Cell splits into two daughter cells and goes back into G

• The Cell splits into two daughter cells and goes back into G 1 phase M Phase Cytokinesis