The fluorochrome stain that can be used to detect mycobacteria is:
a. calcofluor white.
b. acridine orange.
c. auramine.
d. immunofluorescence.
C
The mycolic acids in the cell walls of mycobacteria have an affinity for auramine and rhodamine.
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Which components of the cytoskeleton allow the cell to resist damage from stretching forces?
a. microfilaments and microtubules b. intermediate filaments and microtubules c. microfilaments and intermediate filaments d. only intermediate filaments
Which system is an internal system of regulation and communication involving hormones, glands, and target cells?
What will be an ideal response?
Three of the four answers listed below are different forms of a class of nucleic acids. Select the exception.
a. transfer b. messenger c. template d. ribosomal
A distinctive type of larva shared by several phyla of invertebrates and considered to be important in phylogeny is the
A. gastrula. B. metamere. C. paedomorph. D. tadpole. E. trochophore.