Topic 1: Cellular Structure and Function Introduction to the Microscope Function Parts Care Focusing Apps for learning • • • • Edpuzzle (Home work) Quizzes (assessment) Class kick (student work and portfolio) Hellosmart.com (for learning and class activities) hellosmart.com MOST IMPORTANT GRADING BE ON TIME FINISH YOUR ALL TASKS BEFORE YOU LEAVE Objectives • Topic 1: Cellular Structure and Function • 1.1.1 Explain how advances in microscope technology relate to discoveries about cells • 1.1.2 Identify the parts of the light microscope and the function of each part 1.1.1 Explain how advances in microscope technology relate to discoveries about cells • Microscopes made cell discovery and cell theory development possible • Development of microscopes allows for detailed study of cells Parts of a Compound Microscope compound microscope Eyepiece Body Tube Revolving Nosepiece Objective Lens Stage Clips Diaphragm Light Arm Stage Coarse Focus Fine Focus Base Compound Microscope • A microscope is a very powerful magnifying glass • A microscope helps you see things like cells up close Eyepiece • View the specimen through the eyepiece Stage Clips & Objectives • Stage clips hold the slide in place • Low power objective is used to focus the microscope (short & fat) • High power objective is used to view details of a specimen Coarse Adjustment, Fine Adjustment, & Base • Coarse adjustment focuses adjustment • Fine adjustment fine tunes & gives detailed focus(usually smaller than coarse adjustment knob) • Base is where the microscope rests Stage • Stage is part where the slide rests • Mirror (or light source) directs light upwards onto the slide. Diaphragm • Diaphragm allows light in Nosepiece • Nosepiece is the rotating device that holds the objectives (lenses) Arm • Arm is the part where you carry the microscope Can you name the parts of a compound microscope? Answers 1) base 2) mirror (light source) 3) diaphragm 4) stage 5) stage clips 6) low power objective lens 7) high power objective lens 8) nosepiece 9) arm 10) fine focus knob 11) body tube 12) coarse focus knob 13) eyepiece • • • • • Always carry with 2 hands Only use lens paper for cleaning Do not force knobs Always store covered Keep objects clear of desk and cords • Place the Slide on the Microscope • Use Stage Clips • Click Nosepiece to the lowest (shortest) setting • Look into the Eyepiece • Use the Coarse Focus • • • • Follow steps to focus using low power Click the nosepiece to the longest objective Do NOT use the Coarse Focusing Knob Use the Fine Focus Knob to bring the slide into focus What can you find on your slide?