In the broth dilution test, the highest concentration of the antibiotic resulting in no growth after 16 to 20 hours of incubation is the MIC.

Answer the following statement true (T) or false (F)


False

Biology & Microbiology

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Which factor is important for maintaining the different germ cell layers in the developing embryo? [Hint: without this molecule the embryo would be a ball of cells with no distinct germ cell layers.]

A. activin B. noggin C. Spemann's organizer D. Hox gene E. cadherins

Biology & Microbiology

How does brightfield microscopy allow images to be visualized?

A) Specimens are illuminated with white light. B) Electrons strike the specimen being examined. C) Specimens are fixed and have bright fluorescent molecules attached to them. D) Specimens are illuminated with blue light to visualize internal features of cells smaller than 100 nm. E) Specimens are viewed under phased light to improve magnification.

Biology & Microbiology

Which organisms are responsible for the majority of photosynthesis?

A) Cyanobacteria B) Flowering plants C) Phytoplankton D) Conifers E) Ferns

Biology & Microbiology

Which phenotypic ratio is likely to occur in crosses of two completely dominant, independently segregating gene pairs when both parents are fully heterozygous?

A) 1:1:1:1 B) 3:1 C) 2:4:6:8 D) 9:3:3:1 E) 3:2:3:1

Biology & Microbiology