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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?
Unit 3 Part 2 – The Cell. PROKARYOTIC CELLSEUKARYOTIC CELLS No nucleus. No membrane bound organelles. (ex. mitochondria, vacuole, chloroplast) A.)
Cell Growth and Division
Mitosis Flash Cards Ch 4.
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.
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.
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:
Cell Reproduction and Growth Cell Division M C. Limits on Cell Size Diffusion is more efficient over short distances DNA limitations (has to be able to.
The Cell Cycle and MitosisCell Cycle. Chromosomes o Made of DNA o Each chromosome consists of two sister chromatids attached at a centromere.
MITOSIS the key to growth.
Mitosis. Common to most living things Sequence of growth and division of a cell.
Chapter 11 review Ms. Parekh.
The Cell Cycle.
Cell Division Mitosis. Chromosomes Eukaryotes Found in the nucleus Contain most of the genes Made up of two sister chromatids, joined by a centromere.
The cell cycle Mitosis is only one section of the life cycle of a cell. Interphase is the main part of the cell cycle. This is where DNA is replicated.
What term describes DNA in G1 phase? Chromatin. What happens to the DNA in S Phase? What is DNA called? Doubled, duplicated, copied Chromatin.
_dnadivide/ Cell Growth Mrs. Harlin.
The Cell Cycle. Life Cycle of a Cell Before a growing cell becomes too large it divides The division results in two essentially identical cells called.
Chapter 10 Cell Growth and Division
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