hw 2 answers

Hw 2 answers - online homework 2 answers

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BIO 122-A Homework #2 Key 1. This is a tool that enables researchers to study the structure and function of cells. A. magnifying glass B. B. microscope C. tunneling assay D. digital recording E. differential centrifugation 2. With which type of microscopy would one observe three-dimensional structure? A. fluorescence microscopy B. standard light microscopy C. C. confocal microscopy D. differential-interference light microscopy E. transmission electron microscopy 3. Which of the following reflects a primary difference between transmission and scanning electronmicroscopy? A. Transmission electron microscopy has high resolution, but scanning electron microscopy does not. B. Transmission electron microscopy shows contrast, but scanning electron microscopy does not. C. Transmission electron microscopy has much higher magnification than scanning electron microscopy. D. Transmission electron microscopy shows two-dimensional ultrastructure, while the scanning electron microscopy shows three-dimensional structure. E. Transmission electron microscopy uses light as an illumination source, while scanning electron microscopy uses electron beams as an illumination source. 4. Among those listed, which type of microscopy would provide the highest resolution? A. phase-contrast light microscopy B. scanning electron microscopy C. Nomarski differential-interference light microscopy D. confocal microscopy E. fluorescence microscopy
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5. Prokaryotes A. lack a true nucleus. B. lack true DNA. C.
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This note was uploaded on 12/16/2010 for the course BIO 122 taught by Professor Anandan during the Fall '08 term at Drexel.

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Hw 2 answers - online homework 2 answers

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