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The cell cycle and mitosis
Cells constantly reproduce exact duplicates of themselves. Why?Replacement Repair Growth
Cells must make an exact copy of their DNADNA is the blueprint of the cell and is found in the nucleus
Cell growth and division happens in a series of recognizable steps called the Cell CycleRephrase: what is the cell cycle?
Cell cycle has three phases1. Interphase Cell growth DNA replication occurs 2. Mitosis Nuclear division 2 daughter cells formed, each has identical DNA 3. Cytokinesis 2 identical cells
DNA forms chromosomes-For most of the cell’s life, DNA is arranged “loosely” in the form of chromatin During mitosis DNA condenses into chromosomes
Interphase Longest phase Cell growsChromosomes are duplicated- each duplicate is called a sister chromatid
Prophase Nuclear envelope breaks downSister chromatids joined at centromere Centrioles move to opposite ends and the spindle fibers form between them
Metaphase Short Spindle fibers attach to centromereSister chromatids line up along midline
Anaphase Sister chromatids are pulled apart by the spindle fibers
Telophase Final phase of mitosis- opposite of prophaseChromatids reach opposite poles Nuclear envelope reforms Chromosomes unwind
Cytokinesis Cytoplasm divisionCytokinesis differs between plants and animals- why?
Cell Cycle IPMATC.
The Cell Cycle.
Unit 3 Part 2 – The Cell. PROKARYOTIC CELLSEUKARYOTIC CELLS No nucleus. No membrane bound organelles. (ex. mitochondria, vacuole, chloroplast) A.)
12345 M phase G 2 phase S phase G 1 phase.
How do baby animals grow to be adults?
Cell Growth and Division
Mitosis Flash Cards Ch 4.
Section 10.2 (Pg ): The Process of Cell Division
Bellwork What are the stages of the cell cycle? Which stage is dna synthesized? Which stage is characterized by increase in cytoplasm and organelles? Which.
Chapter 10.2 Cell Division.
The Cell Cycle and Cell Division
10.2 The Process of Cell Division
The Cell Cycle and Mitosis
Mitosis and the Cell Cycle Division of the nucleus and the nuclear material (DNA), as well as the cell.
What’s happening and where are things moving to?
CELL CYCLE The life cycle of a cell consists of a repeating set of events.
10 – 2 Cell Division Mitosis. Chromosomes DNA is passed on in chromosomes DNA is passed on in chromosomes Every organism has a specific # of chromosomes:
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