PPT-The Microscope and Cell Theory

The Microscope An understanding of cells and the ultrastructure of cells had to wait until objects so small could be visualized by magnification Origin of the Microscope The first record of the invention of a microscope was by Hans and Zacharias Janssen Netherlands in 1590. OCR AS Biology. Unit 1: Cells, Exchange and Transport. Learning objectives. To understand and discuss the basis of cell theory based upon milestones in cell biology. To carry out practical work on cell size and magnifications using a light microscope. The History Behind Cells. Where does life come from?. Spontaneous Generation. Spontaneous . Generation. : The idea that . life. can appear from the non-living . environment. Francesco . Redi. . disproved this idea through his meat experiments. Their Environment. Unit 7. Some Random Cell Facts. The average human being is composed of around 100 Trillion individual cells!!!. It would take as many as 50 cells to cover the area of a dot on the letter “. Introduction to cells. Cells form the parts of an organism and carry out all of its functions.. Cells are the basic units of structure and function in living things.. What are cells?. The structure of a living thing is determined by the amazing variety of ways its cells are put together.. . Pott. 1714 – 1788 . Chimney sweeps cancer of the scrotum . Pott’s. disease – vertebral tuberculosis. John Hunter. 1728 – 1793 . Papers at the Royal Society on experimental pathology, including the use of a microscope. Section 3.1. 1. Vocab and Main Concept. Cell Theory (p. 71) – Very important concept!. Know all parts. Cytoplasm (p. . 72). Organelle (p. 72). Prokaryotic cell (p. 72). Eukaryotic cell (p. 72). 2. A . https://www.youtube.com/watch?v=4OpBylwH9DU. . . (6 min). Let’s review…. Cell Theory: 3 . Main Ideas . All . living. things are composed of cells. Cells are the basic units of structure and function in living things. 2. . Who invented the compound microscope? . Hans & Zacharias . Janseen. 3. Tissues are a group of similar cells that . all do the same sort of work. . . 1. Before the 16. th. Century, what 2 practices . Introduction. Robert Hooke examined slices of cork under a . . microscope . and decided to call the . ‘. pore-like. ’. . . structures . cells. .. Robert Hooke, through his observations, had discovered . Unit 3 Topic 1: The cell theory . By the end of this topic, I will be able to…. List the three components of the cell theory. Describe the importance of each of the contributors to the cell theory . Microscope Review The diagram represents a cell in the field of view of a compound light microscope. In which direction should the slide be moved on the microscope stage to center the cell in the field of view Care. Parts. Focusing. Always carry with 2 hands. Do not force knobs. Always store covered. Keep objects clear of desk and cords. Only use lens paper for cleaning. Microscope Care. Eyepiece. Body. . Science. Learning intention. To create a timeline to show the development and refinement of the cell theory.. You will need. •  A pen and paper.. •  A digital device. . Lesson 6:.  challenge answer. •All living things are made of cells.. •Cells are the basic units of life.. •Cells come only from other cells. . Since the microscope was introduced biologists have examined the structure of living things. In most cases they have been found to be compose of cells. There are however some strange exceptions to the general cell pattern..