'Spindle fibres' diaporamas de présentation

Unit 1 The Power of Reproduction

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MEIOSIS

MEIOSIS. Mrs. Kolobaric. Review. What is the purpose of mitosis? _____________ _____________. Cells Themselves. Every cell has its own life span, all cells eventually die, so all of them need to replicate (go through mitosis) Blood replaces all its cells in about 3 months

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Biology 12

Biology 12. Cell Structure and Functions. Smooth ER. Rough ER. Endoplasmic reticulum. This is an extensive network of internal sheet of cell membrane The ER connects the nuclear membrane to the plasma membrane It is a transport system There are two types Rough ER Smooth ER.

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Chapter 9: Chromosomes and DNA Replication

Unit1: Cell function and Inheritance. Chapter 9: Chromosomes and DNA Replication. Higher Human Biology. Learning Intentions. Describe chromosomes as vehicles of inheritance. Specifically explain about.... Genes as regions of chromosomal DNA.

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1.6 Cell division

1.6 Cell division. Essential idea: Cell division is essential but must be controlled. The background image shows a cancerous tumor in the lungs. Tumors are caused by uncontrolled cell division. By Chris Paine https :// bioknowledgy.weebly.com /.

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Organelles

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Chapter 17

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Starter

Starter. Describe what a gene is. Describe the three main components of a DNA molecule. You may use the diagram to help you. Starter. A gene is a sequence of bases / part of a DNA molecule or chromosome, that codes for a characteristic/trait/protein. Phosphate Pentose Sugar Nitrogenous Base.

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Meiosis

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1.2 Eukaryotic Cell Growth and the Cell Cycle

1.2 Eukaryotic Cell Growth and the Cell Cycle. 1.2 Cell Growth and the Cell Cycle. Two Stages: INTERPHASE – G 1 , S, G 2 MITOSIS (incl. CYTOKINESIS). INTERPHASE. The cell is preparing for mitosis. Chromosomes are not clearly visible in the nucleus. Nuclear membrane intact.

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Grade 11 University Biology Miss MacKay

Grade 11 University Biology Miss MacKay. Meiosis. A special type of cell division that occurs in the gonads Purpose: to create haploid reproductive cells known as gametes . Meiosis is name for the process that separates the duplicated nuclear material.

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CONTROL OF THE CELL CYCLE

CONTROL OF THE CELL CYCLE. If it wasn't controlled, your cells would continue to grow and divide...over and over again!. A number of proteins regulate and control the cell cycle. Tell the cell when is the proper time to grow and divide, Stop the cell when the time's not right.

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Mitosis and Meiosis

Mitosis and Meiosis. Higher Biology. Mitosis and Meiosis. Mitosis: - division of somatic (body) cells Meiosis - division of gametes (sex cells). Mitosis. Interphase Prophase Metaphase Anaphase Telophase. I nterphase. Interesting things happen! Cell preparing to divide

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Mitosis and Meiosis

Mitosis and Meiosis. Higher Biology. Mitosis and Meiosis. Mitosis: - division of somatic (body) cells Meiosis - division of gametes (sex cells). Mitosis. Interphase Prophase Metaphase Anaphase Telophase. I nterphase. Interesting things happen! Cell preparing to divide

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Mitosis and Meiosis

Mitosis and Meiosis. Higher Biology. Mitosis and Meiosis. Mitosis: - division of somatic (body) cells Meiosis - division of gametes (sex cells). Mitosis. Interphase Prophase Metaphase Anaphase Telophase. I nterphase. Interesting things happen! Cell preparing to divide

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N5 Biology Cell Biology subunit 3 DNA and Making New Cells

N5 Biology Cell Biology subunit 3 DNA and Making New Cells. Making New Cells. simple cell division diagram. nucleus. nucleus. membrane. membrane. nucleus. nucleus. nucleus. 23. 4. 27. 9. Duplicated chromosome. centomere. chromatids. Stages of Mitosis.

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IB Biology

Cell Division. IB Biology. Unravelling a chromosome:. Access excellence. Human Life Cycle. Diploid Zygote 46. Haploid Sperm 23. Adult 46. Haploid Egg 23. fertilisation. Can you draw and label a pie chart for the above data?. Mitosis in Action.

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Stages of Mitosis

Stages of Mitosis. By: Andrew and Jeffrey. Early Prophas e. Late Prophase. Metaphase. Anaphase. Telophase. Early Prophase. - Duplicated chromosomes transform into X-Shapes - Nucleolus disappears - Nuclear membrane breaks down - Spindle Fibres link to Centromeres . Late Prophase.

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Mitosis vs Meiosis

Mitosis vs Meiosis. By Victoria C 12TAR. Mitosis. http://www.life.uiuc.edu/ib/102/lectures/mitosis1.jpg. Mitosis.

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Early prophase

Early prophase. The replicated chromosomes coil up into X-shaped chromosomes and become visible under a light microscope. The nucleolus will disappear, and the nuclear membrane will begin to break down. Late prophase.

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