Mycobacterium and Nocardia are distinguished from other bacteria by the ________ stain.
A. basic
B. Gram
C. acid-fast
D. endospore
E. methylene blue
Answer: C
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The activation of receptor tyrosine kinases is characterized by _____
A) dimerization and phosphorylation B) dimerization and IP3 binding C) a phosphorylation cascade D) GTP hydrolysis E) channel protein shape change
An advantage of asexual reproduction is that it _____
A) allows the species to endure long periods of unstable environmental conditions B) enhances genetic variability in the species C) enables the species to rapidly colonize habitats that are favorable to that species D) produces offspring that respond effectively to new pathogens E) allows a species to easily rid itself of harmful mutations
During which epoch does a major extinction event begin?
a. Eocene b. Oligocene c. Miocene d. Pleistocene e. Recent
The _____ include the only winged invertebrates
a. cnidarians c. arthropods b. echinoderms d. placozoans