PPT-Cell Structure

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. A living thing. Cell. The basic unit of structure and function in living things. Unicellular. Made of a single cell. Multicellular. Consisting of many cells. Stimulus. A change in an organism’s surroundings that causes the organism to react. . Cell Structure. Enormous variety in the size and shape of different cells. Smallest cells belong to group of . organisms. . Mycoplasma. Only about 0.2 µm in diameter. So small that often beyond the limit of resolution of light microscopes. Dolgushin. Harvard SIG 2013. History of Cell Theory. . CITOLOGY. . (. cito. - and –logos-. ) – . the science about the cell. Hooke. , Leeuwenhoek, Schleiden, Schwann, . Virchow. All living things or organisms are made of cells and their . Cell membrane is like the doors on a car. They regulate what goes in/out.. The cell wall in a plant cell is like the frame on a car. The frame supports the car as the cell wall supports the plant.. The endoplasmic reticulum is like the fuel lines on a car. It lets a passage way for fuel to flow like proteins do in the endoplasmic reticulum . Solution. Solution. Cell Membrane consists of the lipid . bilayer. , carbohydrates, and proteins.. Water can pass right through lipid . bilayer. What is a solution?. A mixture of two or more substances.. Structures, Functions and Organelle Relationships. p.50-50 in textbook. Animal Cell. Plant Cell. Cell Membrane & Cell wall. The cell membrane (plasma membrane) creates a cell boundary and helps to regulate the transport of molecules in and out of the cell (in plant & animal cells). Keywords - cell membrane; cell wall; nucleus; nucleolus; cytoplasm; mitochondria; ribosome; endoplasmic reticulum (smooth and rough); Golgi body; lysosome; vesicles Starter – Why are cells different? The printed out notes are more detailed than these slides, you are expected to read the chapter and your notes - anything is fair game on the test, but the cell chapter is largely review. . Quick: Grab some scratch paper and quickly discuss with your partner what you remember from freshman biology about the cell. . 24 . Nov. 2014, CERN. Toshi Higo (KEK). 2014/11/23. CLIC Structure Review. 1. Contents . Transition from GLC/NLC . to CLIC. Alignment target. Alignment mechanism. M. achining. S. tacking/assembly. Bookshelf. Here are major advantages of steel structure building including costing, safety, designs and uses. Explore here! Extended Learning — Activities and Projects1.Visit a laboratory for senior secondary students in your school orin a neighbouring school. Learn about the functioning of aunder the microscope.2.Tal The ultrastructure of eukaryotic cells. Spec. Animal Cell Plant Cell. Starter. In pairs - Identify the main similarities and differences between animal and plant cells. Animals vs. Plants. Much larger than prokaryotic cells having two enveloped systems. True cells occurring in plants and animals . Though they have different shape size and physiology but all cells are typically composed of plasma membrane cytoplasm and its organelles i.e. mitochondria, endoplasmic reticulum . •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..