What is the role of lenses in microscopy?
a. Lenses focus either light or electrons to create a magnified image of a specimen.
b. Lenses are only used to magnify specimens that are smaller than whole red blood cells.
c. Lenses increase the contrast to determine structural differences in stained specimens.
Answer: a. Lenses focus either light or electrons to create a magnified image of a specimen.
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Damage to the tendons that pass over the wrist causes
a. Ehlers-Danlos syndrome. b. tarsal tunnel syndrome. c. Pierre-Robin syndrome. d. carpal tunnel syndrome. e. Wolf-Parkinson-White syndrome.
Proteins perform four of the following functions. They do NOT, however ____
a. act as enzymes b. store large amounts of energy c. act as transport molecules d. bind molecules to or inside cells e. adjust cell activities
Most automated nucleotide sequencing machines detect bands by ________.
A. autoradiography B. measuring incorporated radioactivity C. laser induced fluorescence D. sizing DNA fragments produced by base specific chemical cleavage reactions
Which major tissue type exhibits the shortening of its cells (i.e., contraction) as a major function?
A. Connective B. Nervous C. Muscle D. Epithelial