A ________ microscope provides images that are "slices" of the specimen which may be assembled digitally to produce a three-dimensional representation of the specimen.
A. bright-field
B. dark-field
C. confocal
D. phase contrast
E. transmission electron
Answer: C
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Which of the following is a common benefit of a microbe-plant symbiosis?
A) increased nutrient availability B) decreased pathogen colonization C) increased affinity for carbon dioxide D) increased nutrient availability and decreased pathogen colonization
Which structural motifs found in transcriptional regulatory proteins is thought to interact with DNA only through the minor groove?
A. homeodomain B. leucine zipper C. ?-barrel D. helix-turn-helix
During which phase of the cell cycle do chromosomes separate and move toward opposite poles?
a. prophase b. metaphase c. anaphase d. telophase
Mechanical vectors do NOT transmit infectious agents by____
a. contaminated vehicle b. aerosol formation c. direct contact d. food