Which microscope is best used for observing the surfaces of intact cells and viruses?

A) phase-contrast microscope
B) darkfield microscope
C) fluorescence microscope
D) brightfield microscope
E) scanning electron microscope


E

Biology & Microbiology

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The dark middle layer of the eye that prevents the

scattering of light is the a. fovea. b. retina. c. sclera. d. choroid. e. cornea.

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The cells of bacteria can be categorized according to arrangement or style of grouping. The greatest variety in arrangement occurs in bacilli.

a. true b. false

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The Lancefield grouping system ________.

A. is based on a DNA fingerprinting assay specific for streptococci B. depends on serological detection of polysaccharide and teichoic acid antigens and is used to identify ? -hemolytic streptococci C. is used to identify ?-hemolytic streptococci D. depends on serological detection of polysaccharide and teichoic acid antigens

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What number is the Cytoplasmic matrix?

What will be an ideal response?

Biology & Microbiology