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How do CELLS REPRODUCE? Mitosis: asexual reproductions Meiosis: sexual reproduction
Analyze how cells grow and reproduce in terms of
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Chromosomes are located in the nucleus of a cell containing tightly spindled DNA.
Chromatid is a single chromosome Analyze how cells grow and reproduce in terms of
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Mitosis Cell Division Analyze how cells grow and reproduce in terms of
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Q: How do organisms Grow?
Mitosis Q: How do organisms Grow? A1: Make Larger Cells A2: Make More Cells Review: Cell Theory- All cells come from pre-existing cells. Analyze how cells grow and reproduce in terms of
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Mitosis Your cells are dividing, growing, dying all the time.
Your body produces billions of cells. Cells divide, specialize, form tissues, organize into organs, work together to form organ systems. Part of you that is always undergoing Mitosis: Skin, Blood Cells Analyze how cells grow and reproduce in terms of
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Parts of the Plant that are always dividing for growth: Roots and Stem
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Mitosis – Cell Division – Asexual Reproduction
5 Phases of Mitosis Interphase Prophase Metaphase Anaphase Telophase Cells divide into 2 new identical cells. Analyze how cells grow and reproduce in terms of
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Mitosis – Cell Division – Asexual Reproduction
Interphase Prophase Metaphase Anaphase Telophase ***Your description will go here!!! ***Your pictures will go here!!! Analyze how cells grow and reproduce in terms of
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Cell Cycle is the sequence of stages through which a cell passes between one cell division.
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Cell Cycle is the sequence of stages through which a cell passes between one cell division.
Growth phase Replication of DNA Replication Organelles and Growth of mitosis The cell cycle 3 phases of Interphase Analyze how cells grow and reproduce in terms of
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Interphase 1st stage: G1, S, and G2 in each.
When cell prepares for division. Chromosomes duplicate!!! Cell grows Some do not count this as the first stage of mitosis! Analyze how cells grow and reproduce in terms of
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Prophase Chromosomes are visible. Nucleus begins to break apart.
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Metaphase Chromosomes line up along the center of the cell. MIDDLE!
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Anaphase Duplicated Chromosomes pull away from each other.
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Telophase 2 New cells form. Cell division completes
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Cytokinesis 2 New cells form. Cell division completes
Cytokinesis occurs (new cell wall forms or cell membrane is pinched in) Analyze how cells grow and reproduce in terms of
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Analyze how cells grow and reproduce in terms of
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Analyze how cells grow and reproduce in terms of
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Analyze how cells grow and reproduce in terms of
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Remember! Mitosis is Asexual. Mitosis is for growth and repairing old, dead cells. Mitosis occurs throughout the body. Mitosis stages are IPMAT. Mitosis begins with 1 cell & ends with 2 identical cells! Analyze how cells grow and reproduce in terms of
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Analyze how cells grow and reproduce in terms of
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Result of Uncontrolled Cell division in Mitosis.
Cancer Result of Uncontrolled Cell division in Mitosis. From environmental factors, changes in enzymes that regulate cell division, & genetics. Second leading cause of death in the U.S. Analyze how cells grow and reproduce in terms of
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Cells divide, and keep dividing.
Cancerous Cells Cells divide, and keep dividing. This forms masses of tissue called a Tumor. Photo 1 – breast cancer Photo 2 – bone cancer Analyze how cells grow and reproduce in terms of
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Photo 1 – prostate cancer Photo 2 – skin cancer
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Analyze how cells grow and reproduce in terms of
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Educational Public Service Announcement/Brochure
You are an oncologist (scientist who studies cancer) & you would like to educate the public about cancer so that they may make healthful choices in their lives. Please include: 1. The cause of cancer at the cell level. 2. Types of cancer that are most common in the U.S. 3. General environmental causes of cancer. 4. Preventative actions one can take (this should be the largest & most important section of the brochure. Be Creative, Informative, Clear, & Specific See your book: pages Analyze how cells grow and reproduce in terms of
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= Sexual Reproduction Diploid Cell – full set of chromosomes
Same as Mitosis 2 daughter cells are identical to parent cell. Chromosomes do NOT duplicate here. Each cell divides- chromosomes separating randomly! Haploid Cells – ½ set of chromosomes Also called Gametes Ex. Sperm, egg, pollen The Result: 4 daughter cells with ½ the number of chromosomes needed for an individual. Analyze how cells grow and reproduce in terms of
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Resulting Cell when 2 gametes fuse = Fertilization
Sperm are created Eggs are created Resulting Cell when 2 gametes fuse = Fertilization Analyze how cells grow and reproduce in terms of
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MEIOSIS: cell division necessary for reproduction.
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meiosis Analyze how cells grow and reproduce in terms of
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Meiosis :Cell division for sexual reproduction
Meiosis :Cell division for sexual reproduction. Cells are located in the testes (males) females(ovaries) Analyze how cells grow and reproduce in terms of
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Meiosis: IPMAT cytokinesis 2nd phase of PMAT producing 4 (haploid-single)daughter cells
II Prophase Synapsis occurs and crossing over of chromosomes same Metaphase Pairs of chromosomes line in the plates 2 celled-pair of chromosomes line in the plates Anaphase Homologous pairs separate Sister chromatids seperates Telophase Division occurs Analyze how cells grow and reproduce in terms of
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From one Gamete forming cell – 4 daughter cells are formed.
Meiosis Function: creates gametes (sperm, egg, pollen) for sexual reproduction. From one Gamete forming cell – 4 daughter cells are formed. Haploid cells are created – which have ½ the number of chromosomes as the parent or normal body cells. Analyze how cells grow and reproduce in terms of
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Genetic Recombination: AKA Crossing Over
Mistakes in Meiosis Genetic Recombination: AKA Crossing Over Occurs during meiosis, chromosomes actually cross over each other, genetic material gets switched! This leads to genetic variability! Can be an endless number of different chromosomes possible! Analyze how cells grow and reproduce in terms of
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Mistakes in Meiosis Non-Disjunction
Failure of Chromosomes to separate properly during meiosis. Result: Zygote will have extra chromosomes or too few chromosomes. Most Zygotes will not survive. Analyze how cells grow and reproduce in terms of
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Non-Disjunction In humans, a person with an extra 21st chromosomes will have Down’s Syndrome Analyze how cells grow and reproduce in terms of
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# of Cellular Divisions # of Chromosomes in Daughter cells
Mitosis vs. Meiosis Mitosis Meiosis Function Type of Reproduction # of Cells Produced Type of Cell Produced # of Cellular Divisions # of Chromosomes in Daughter cells Analyze how cells grow and reproduce in terms of
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Analyze how cells grow and reproduce in terms of
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# of Cellular Divisions # of Chromosomes in Daughter cells
Mitosis vs. Meiosis Mitosis Meiosis Function Create new cells for growth & replace old cells Create gametes for sexual reproduction Type of Reproduction Asexual Sexual # of Cells Produced 2 4 Type of Cell Produced Diploid Haploid # of Cellular Divisions 1 # of Chromosomes in Daughter cells Same as parent cell ½ as parent cell Analyze how cells grow and reproduce in terms of
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