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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 DNA DNA 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 Cycle Rephrase: what is the cell cycle?
Cell cycle has three phases 1. Interphase –Cell growth –DNA replication occurs 2. Mitosis –Nuclear division –2 daughter cells formed, each has identical DNA 3. Cytokinesis –2 identical cells Cell cycle Interphase (DNA duplication) Mitosis (Nuclear Division) Cytokinesis (cytoplasm division)
DNA forms chromosomes- For most of the cells life, DNA is arranged loosely in the form of chromatin During mitosis DNA condenses into chromosomes
Interphase Longest phase Cell grows Chromosomes are duplicated- each duplicate is called a sister chromatid
Prophase Nuclear envelope breaks down Sister chromatids joined at centromere Centrioles move to opposite ends and the spindle fibers form between them
Metaphase Short Spindle fibers attach to centromere Sister chromatids line up along midline
Anaphase Sister chromatids are pulled apart by the spindle fibers
Telophase Final phase of mitosis- opposite of prophase Chromatids reach opposite poles Nuclear envelope reforms Chromosomes unwind
Cytokinesis Cytoplasm division Cytokinesis differs between plants and animals- why?
_dnadivide/ Cell Growth Mrs. Harlin.
Cell Division The Cell Cycle and Mitosis. Why do cells divide? Growth Reproduction Repair.
Mitosis Divide and conquer. How do cells multiply? Cell cycle – process where: DNA contained in chromosomes duplicates Parent cell divides each new cell.
GENETICS. Mitosis and the Cell Cycle Cell reproduction.
Bell Ringer: No paper needed Why do cells divide?.
The cell cycle: interphase, mitosis, cytokinesis.
MITOSIS. Mitosis and the Cell Cycle Sexual reproduction – combining genetic info from 2 organisms of the same species to create offspring Asexual reproduction.
The Cell Cycle & Cell Division. The Cell Cycle
The Cell Cycle. INTERPHASE : G 1 - cell growth, the longest part of the cell’s life S – DNA synthesis, DNA is copied (replication) G 2 – cell prepares.
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.
Cell Division A cell grows in size by increasing both the size and the number of its cells. Then 2 grow and divide, forming and so on. Cell Cycle: The.
The Cell Cycle Cell Division Onion Cells Cell Division A cell must divide to: Grow Reproduce Repair damaged tissues.
Mitosis Flash Cards Ch 4. Why do cells divide rather than continuing to grow indefinitely? -The larger the cell becomes, the more demands it places on.
Activity #44 PHASES OF THE CELL CYCLE. 6 Phases of the Cell Cycle 1.Interphase 2.Prophase 3.Metaphase 4.Anaphase 5.Telophase 6.Cytokinesis.
Cell Cycle. Why do cells divide? Growth --by adding cells, not having them get bigger --cells are not efficient for exchanging materials if they are too.
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.
Cell Growth & Division Mitosis. Why do Cells Reproduce? Growth of an organism Replacement of old or damaged cells.
Phases of the Cell Cycle Interphase and Mitosis. Interphase G1 : Cell Grows G1 : Cell Grows S : DNA is copied (to produce a diploid # S : DNA is copied.
Mitosis. Common to most living things Sequence of growth and division of a cell.
CHAPTER 11 REVIEW Ms. Parekh. WHAT IS THE CELL CYCLE? A cycle of growth, development, and division What are the two main phases of the cell cycle? Interphase.
CELL CYCLE How many cells do we begin with? 2 How do we get more?
10-2 Cell Division Objective: Name the main events of the cell cycle. Describe what happens during the four phases of mitosis.
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:
EQ: What are the 4 stages in Mitosis and what happens during each stage?
What term describes DNA in G1 phase? Chromatin. What happens to the DNA in S Phase? What is DNA called? Doubled, duplicated, copied Chromatin.
Cell Division. Why? Cells divide for many reasons: – In order to stay small Diffusion occurs at a faster, more efficient rate in smaller cells. – DNA.
The Cell Cycle. Steps in the cell cycle Interphase: No division occurs. Interphase has three subdivisions: G1 SS G2.
MITOSIS the key to growth. Mitosis - the division of the nucleus into two equal sets of genetic information Basically, simple cell division.
Lesson Overview Lesson Overview The Process of Cell Division Lesson Overview 10.2 The Process of Cell Division.
Mitosis and the Cell Cycle Division of the nucleus and the nuclear material (DNA), as well as the cell.
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.
The Cell Cycle The cell cycle includes the process in which single cells divide to form TWO identical cells with the SAME number of chromosomes.
Unit 3 Part 2 – The Cell. PROKARYOTIC CELLSEUKARYOTIC CELLS No nucleus. No membrane bound organelles. (ex. mitochondria, vacuole, chloroplast) A.)
Cell Division Mitosis. Chromosomes Eukaryotes Found in the nucleus Contain most of the genes Made up of two sister chromatids, joined by a centromere.
Animated Mitosis Cycle Interphase Prophase Metaphase Anaphase Telophase Cytokinesis.
The Cell Cycle and MitosisCell Cycle. Chromosomes o Made of DNA o Each chromosome consists of two sister chromatids attached at a centromere.
It’s The circle of cell life How do cells reproduce and grow?
Cell Growth and Division. The Cell Cycle The cell cycle is the repeated sequence of cell growth followed by cell division. There are two stages to the.
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.
The Cell Cycle. Chromosomes Carry genetic information in eukaryotes Carry genetic information in eukaryotes Made of DNA and proteins Made of DNA and proteins.
The Cell Cycle. THE CELL CYCLE The Cell Cycle Cell Reproduction –One cell (parent cell) reproduces to make 2 identical cells (daughter cells)
Stages of Mitosis What’s happening and where are things moving to?
In eukaryotes, cell division occurs in two major stages. The first stage, division of the cell nucleus, is called mitosis. The second stage, division of.
Review of Cell Cycle I play music at the club. Name the 3 Parts of the Cell cycle 1) Interphase: Gap 1 : growing, carying out normal cell function. Synthesis:
The Cell Cycle Interphase Mitosis Cytokinesis. How do little elephants grow up to be BIG elephants?
Section 10.2 (Pg ): The Process of Cell Division.
CHAPTER 10.2 Cell Division. A cell has to go through many preparations to divide. This is important to make sure that each new cell has all the necessary.
3/6/2016 Cell Division Cell divides into two daughter cells.
The Cell Cycle Start G S G Mitosis.
Chapter 3 Lesson 1 The Cell Cycle and Cell Division.
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