Intro to Cells Gizmo Lab Part A & B.docx - Activity A Observing cells Get the Gizmo ready On the LANDSCAPE tab click on the woman\u2019s right arm to

Intro to Cells Gizmo Lab Part A & B.docx - Activity A...

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2018Activity A: Observing cellsGet the Gizmo ready: On the LANDSCAPE tab, click on the woman’s right arm to choose the Human skinsample.Select the MICROSCOPE tab.Introduction:Complex organisms are made up of smaller units, called cells. Most cells are too small to be seen by the naked eye. Microscopes are used to magnify small objects, so here you will use a compound light microscopeto observe the cells of different organisms. Question: What are similarities and differences between cells from different organisms?1.Match: Read about each microscope part. Match the description to the part on the diagram.B Stage: Platform where a slide is placed. AEye piece: Lens at the top of the microscope that the user looks though. This lens most commonly magnifies a sample by 10x.C Coarse focus knob: Large knob that moves the stage up and down to focus the sample.D Fine focus knob: Small knob that moves the stage over a short distance to refine the focus. EObjective lens: A second lens that further magnifies the sample. Microscopes usually have several objective lenses with different magnifications. The total magnification is the product of the eyepiece magnification and the objective lens magnification. FSlide: A rectangular piece of glass upon which a sample is mounted for viewing under a microscope.2.Manipulate: With 40x selected, use the Coarseand Fine focussliders to focus on the sample. Then, choose 400x and focus on the sample using the Fine focusslider. A.Which focus knob is easier to use at 40x? Coarse 400x? fine B.Turn on Show labels. What structures can you see in human skin cells?
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