Part A-Selecting the Most Appropriate Method of Viewing This activity asks you t

Question

Part A-Selecting the Most Appropriate Method of Viewing This activity asks you to sort items according to the most appropriate method for viewing. For each of the following items, indicate which viewing method is most appropriate-the unaided eye, light microscopy, scanning electron microscopy, or transa into the comect bin. viewing a cross section of poliovirus examining your cat for the presence of 30 nm) examining a clinical specimen, such as a sputum smear, for the presence shape and arrangement of bacterial of bacteria viewing the three-dimensional shape protozoan and the arrangement and distribution of cilia on its surface Light microscope Scanning electron microscope Unaided eye

Explanation / Answer

7. Diaphragm controls the amount of light reaching the specimen.

6. Stage is the platform on which the slide is placed for viewing.

5. Objective lens is closest to the slide and provides initial magnification of specimen.

3. Fine focus knob is used after initial focusing to sharpen the images.

2. Ocular lens is the lens that you look through

1. Condenser lens is used to focus light from the illuminator onto the specimen.

4. Coarse focus knob

Part D :

Answer B : 0.15 millimetre

1 micrometer = 0.001 millimetre

Part C :

Answer B : 250 nm

1 micrometer = 1000 nanometer

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