The Cell Cycle & Mitosis Cellular Division 101

The Cell Cycle & Mitosis Cellular Division 101

The Cell Cycle & Mitosis Cellular Division 101 The Cell Cycle The Cell Cycle The

cell cycle is the series of events that occur in a cell including growth, replication and division. There are two major divisions:

Interphase Mitotic Phase (Mitosis and Cytokinesis) Interphase Interphase Interphase

is where cells spend most of their lives. Interphase is the time between cell divisions. There are three phases to Interphase.

G1 Cell growth S DNA is copied G2 Growth continues and preparation for division begins.

What is Mitosis? What is Mitosis? Mitosis is the division of the nucleus of a cell with duplicated DNA

In mitosis, a parent cell divides into two diploid daughter cells Four steps: Prophase, Metaphase, Anaphase, Telophase Prophase Prophase

Chromatin condenses to form

chromosomes Nuclear envelope dissolves Centrosomes move to opposite ends of the cell Spindle forms between centrosomes and chromosomes start to move to the center

Metaphase Metaphase Chromosomes line up across the center of the cell

Chromosomes attach to the spindle fibers Anaphase Anaphase Centromeres divide

Sister chromatids move rapidly to opposite poles Telophase Telophase Chromosomes

return to chromatin form Spindle fibers disappear Nuclear envelope begins to form around each set of chromosomes Cytokinesis Cytokinesis

The Animal cells: cleavage furrow.

Area of the cell membrane pinches in Plant cells: cell plate. Vesicles from the Golgi apparatus join together at the midline of the cell to form a cell wall

Two process by which cells divide. daughter cells are about the same size. Each receives half the cytoplasm and half the

organelles. Prophase Metaphase Anaphase

Telophase Control of Cell Division Control of Cell Division Think traffic lights green means go, while red means

stop. Cell Growth Checkpoint (G1)

Is the cell large enough? Is it healthy? Green light sends us into DNA replication. DNA Synthesis Checkpoint (G2)

Three checkpoints in the cell decide whether the cell should stop or go. Did DNA replicate correctly? Green sends the cell into Mitosis.

Mitosis Checkpoint Did mitosis go okay? Green sends the cells exiting mitosis.

Recently Viewed Presentations

  • Seni Budaya Viii

    Seni Budaya Viii

    MENAMPILKAN KARYA SENI ARI ... ( putra / putri ) atau campuran ( putra dan putri ) SENI BUDAYA VIII BAB VI MENAMPILKAN KARYA SENI ARI BERKARYA SENI TARI TUNGGAL NUSANTARA Berkarya seni tari tidak mudah, tetepi juga bukan merupakan...
  • Frame relay - WordPress.com

    Frame relay - WordPress.com

    Conduct a code walkthrough when appropriate. Perform unit tests and correct errors when you have uncovered. Refactor the code. 2. TESTING PRINCIPLES ... Data flow diagram (DFD) Analysis Pattern Template . Name . Intent . Motivation . Forces and context...
  • These slides are shared with members of the

    These slides are shared with members of the

    Developing a broader, and deeper longer term understanding of how an organization creates value in the context of the external environment, strategy, business model and capitals, and risks and opportunities.Integrated reporting therefore should be used as a key management tool...
  • PowerPoint 프레젠테이션 - cfile6.uf.tistory.com

    PowerPoint 프레젠테이션 - cfile6.uf.tistory.com

    - 하나의 udp또는 tcp포트를 통해 ip subnet이나 가상의 이더넷을터널링할수 있다.- 안전한 VPN을 위해 openssl이 지원하는 많은 암호화, 인증 기능을 이용할수 있다. 또한 미리 지정된 공유키(pre-shared static key)를 이용하거나 아이디/암호를 이용한 인증 기능도 지원한다.-
  • S&A Base Funding Request 2013 - Central Washington University

    S&A Base Funding Request 2013 - Central Washington University

    Central Washington University Business Auxiliaries including. Catering. Conference Program. Connection Card Office. Copy Cat Shop. Dining Services. Enterprise Accounting. University Housing. ANY CWU Department, Agency or Club. Clients. Former Community.
  • The Second Amendment

    The Second Amendment

    Arguments for Gun Control The Constitution is an antiquated document The Constitution is a "living" document No need for a gun except hunting and target shooting today Substance abuse related killings Crimes of passion - temptation People simply cannot be...
  • BIO 1414 Human Anatomy & Physiology II - kau

    BIO 1414 Human Anatomy & Physiology II - kau

    * It also serves to protect the eye. * The eye is made up of three tunics or layers of material. * The outermost tunic is called the fibrous tunic. The fibrous tunic is made up of the opaque white...
  • Duane L. Pierson, Ph.D. NASA Johnson Space Center

    Duane L. Pierson, Ph.D. NASA Johnson Space Center

    Duane L. Pierson, Ph.D. NASA Johnson Space Center Houston, Texas Muscle loss Fluid shifts, hematological changes Neurosensory adaptations Gastrointestinal alterations Cardiovascular adaptations Taste and odor sensitivity Sleep and circadian rhythm disturbances Psychological-Behavioral- Performance issues Immune changes Bone loss ADAPTATION TO...