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An Introduction to Eukaryotic and Prokaryotic cells.

An Introduction to Eukaryotic and Prokaryotic cells. What Are Cells?. A mass of protoplasm kept separate from each other by a plasma membrane envelope. The University Of Melbourne – http://www.rudyard.org/wp-content/uploads/2013/11/skin-cells-under-a-microscope.jpg.

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An Introduction to Eukaryotic and Prokaryotic cells.

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  1. An Introduction to Eukaryotic and Prokaryotic cells.

  2. What Are Cells? A mass of protoplasm kept separate from each other by a plasma membrane envelope. The University Of Melbourne – http://www.rudyard.org/wp-content/uploads/2013/11/skin-cells-under-a-microscope.jpg

  3. 2 Classifications of Organisms PROKARYOTIC EUKARYOTIC

  4. What Is a Prokaryotic Cell? An organism where the cells have; • No nuclear envelope. • Smaller ribosomes. • Enclosed by cell membrane. Bacteria. Archaea.

  5. What Is Bacteria? • A micro-organism. • Comes in various shapes; • Spheres, rods and spirals. • First life form to appear on Earth. • Found in variety of habitats.

  6. http://healthcareadministration1.com/wp-content/uploads/2013/11/flesh-eating-bacteria-microscope.jpghttp://healthcareadministration1.com/wp-content/uploads/2013/11/flesh-eating-bacteria-microscope.jpg

  7. What Is Archea? • Single celled organisms. • Micro-organism. • Used to be classed as bacteria. • Odd shapes. • Looks like bacteria but actually different. • Assumed to live in extreme conditions. NOT TRUE!

  8. Eye Of Science / Science photo library http://www.microbiologyonline.org.uk/about-microbiology/introducing-microbes/archaea

  9. What Is a Eukaryotic Cell? An organism where the cells have; • Nucleus contained in envelope. • Organelles also contained in envelopes. • Larger ribosomes. • Mitochondria, golgi and chloroplasts. Animals. Plants. Fungi.

  10. Cytoskeleton • Network of proteins fibres found in cells. • Actin filaments. • Gives structure and shape. • Moves organelles around inside cells. • Microtubules. • Tubin. • Chromosomes moved during mitosis. • Vesicles move from ER to golgi.

  11. Cytoplasm • The protoplasm is the name of the fluid that all the organelles are in. • Cytoplasm = protoplasm + cell organelles

  12. Division Of Labour • Each organelle has specific role. • Different organelles work together each contributing to cell survival.

  13. Nucleus Nuclear envelope Nuclear pore Nucleolus Nucleoplasm • The nucleus contains the DNA which provides the instructions for making proteins. • Code is copied using mRNA and is transported out of the nucleus to the ribosomes

  14. Nucleolus • The Nucleolus has a clear spherical shape. • Only visible when the cell is dividing. • The Nucleolus makes Ribo-Nucleic acid (RNA) which is needed to make ribosome's. • The DNA carries genetic information for the synthesis of proteins.

  15. How Do These Cells Reproduce? EUKARYOTE MEIOSIS Sexual reproduction MITOSIS PROKARYOTE Cell division creating 2 identical cells Division of cells into 2 smaller parts then regeneration BINARY FISSION

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