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BIO 120-2nd lab quiz-Exercise 2

BIO 120-2nd lab quiz-Exercise 2 - and width of the cell 4...

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Biology 120 2nd Lab Quiz-Exercise 2 1) Calculate the total magnification of an image viewed in a compound microscope with a 10X ocular lens in combination with a 40X objective lens. Total magnification = 2) Which part of the microscope regulates the amount of light passing through the specimen? a. nosepiece b. ocular lens c. condenser or iris diaphragm d. coarse adjustment knob e. fine adjustment knob 3) A student measured the length and width of a cell using a reticle in the ocular lens and the 40X objective lens in place. The cell was 3.0 reticle divisions long with 1.5 reticle divisions wide. If each reticle division at represents 0.030 mm, what is the length
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Unformatted text preview: and width of the cell? 4) Sketch a single cheek cell and label the nucleus, nuclear envelope, cytoplasm, and plasma membrane. 5) A. Which two cell structures were visible in the green plant cell, but absent from your cheek cells? B. Which type of cell organelle was visible in the green plant cell, but not in the onion cells? Why? Answers: 1) 400 2) c 3) 0.09mm long and 0.045 mm wide 4) Must draw out 5) A. Cell Wall and Chloroplasts B. Chloroplasts were visible because green plants grow above ground and absorb sunlight, so photosynthesis takes place-whereas onion bulbs grow underground and do not absorb sunlight....
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