microorganisms. Their cell structure is unique in that they don’t have a nucleus and most bacteria have cell walls similar to plant cells. They come in all sorts of shapes including rods‚ spirals‚ and spheres. Some bacteria can "swim" around using long tails called flagella. Others just hang out or glide along. Are bacteria dangerous? Most bacteria aren’t dangerous‚ but some are and can make us sick. These bacteria are called Pathogens. Pathogens can cause diseases in animals and plants. Some examples
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@ballerina_breahn @ballerina_breahn Cell City News Cell City News This story can fit 75-125 words. Your headline is an important part of the newsletter and should be considered carefully. In a few words‚ it should accurately represent the contents of the story and draw readers into the story. Develop the headline before you write the story. This way‚ the headline will help you keep the story focused. Examples of possible headlines include Product Wins Industry Award‚ New Product Can Save
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SPECIALIZED CELL ANIMAL Sperm cells PLANT Xylem cells are specialised to find a female cell (egg cells) and join with it. They have tails‚ that makes them move in water to find and fertilize the female cell. They can move because they have many mitochondria located between the tail and the head‚ which gives them energy. In the head‚ there is a vacuole filled with acrosome‚ which is a specialized Lysosome that releases enzymes in order for the Sperm Cell to break into the Egg Cell‚ through the
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CELL DIVISION REVIEW 1. Name the phase of interphase in which cells copy their DNA. G-2 2. Anaphase 3. Name the phase in which spindle fibers disappear. telephase 4. Put the following cells in the correct order. A interphase B telephase C anaphase D prophase E metaphase 5. centromere 6. DNA that is spread out in the nucleus of a non-dividing cell is called chromatin. 7. Name the phase this cell is in. 8. Name
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1.Carbohydrates Consists of CnH2xOx • Include sugars • Classified into groups based on the number of carbon atoms per molecule. • Classes of Carbohydrates o Monosaccharides ▪ Simple sugars o Disaccharides ▪ Compound sugars o Polysaccharides ▪ Complex sugars a. Monosaccharides • Simple sugars • Contain about 3 to 6 carbon atoms per molecule o Trioses
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Cell Structure and Function Chapter Outline Cell theory Properties common to all cells Cell size and shape – why are cells so small? Prokaryotic cells Eukaryotic cells Organelles and structure in all eukaryotic cell Organelles in plant cells but not animal Cell junctions History of Cell Theory mid 1600s – Anton van Leeuwenhoek Improved microscope‚ observed many living cells mid 1600s – Robert Hooke Observed many cells including cork cells 1850 – Rudolf Virchow
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The studies of Robert Hooke 1665 into a plant material would allow the determination of a pore like regular structure surrounded by a wall of which he called cells’ this in itself unbeknownst to him‚ was the discovery of the fundamental unit of all living things. In 1838 a botanist called Schleiden derived the theory The basic unit of structure and function of all living organisms is the cell.’ Over 150 years later this can be regarded as one of the most familiar and important facts within the
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DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried‚ weighed and added to the test tubes. The discs were then weighed again after a period of 24 hours. The percentage change in mass was then calculated. Apparatus.  Specimen tubes with stoppers x6  1cm3 diameter cork borer  razor
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Living Environment/Biology A Tour of the Cell CellsTissuesOrgansOrgan SystemsOrganisms *Cells are made up of smaller functional parts known as cell organelles (little organs). Cell organelles are specialized cell structures that perform specialized jobs in the cell.* 1. Cytoplasm- *Jelly-like substance inside of the cell 2. Mitochondria- *In cellular respiration oxygen is used to extract energy from sugars‚ fats‚ and other nutrients 3. Cell membrane- *It is a selectively permeable
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Cell Organelles Nucleus Its function is to control the cell’s activities and retain the chromosomes. The nucleus is bound by a double membrane‚ the nuclear envelope. The nuclear envelope has pores in it to allow the transport of mRNA. The cytoplasm like material is called nucleoplasm which contains chromatin (coils of DNA and histone proteins)‚ it is chromatin that condenses to form chromosomes during cell division. Within the nucleus is a small spherical body called the nucleolus which
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