Because so few bacteria can be grown easily in culture but all of them contain DNA, molecular techniques like PCR and SSU rRNA are used to be able to identify and quantify microorganisms as a "census" for diversity.
Answer the following statement true (T) or false (F)
True
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Chitin is a major component of the _____
A) skeleton of mammals B) hydrostatic skeletons of earthworms C) exoskeleton of insects D) body hairs of mammals E) skeleton in birds
While a prophage genome is integrated into the host cell chromosome, it is
A. latent. B. lysogenic. C. temperate. D. latent, lysogenic, and temperate. E. latent and lysogenic.
Competitive exclusion is based on the idea that:
a. one species will voluntarily allow the other to survive b. no two species can completely occupy the same niche c. the larger species will always dominate the smaller d. competition is overrated as a factor in species survival e. two species can live together if they share the same niche but use it at different times
Nitrogen-fixing bacteria, such as cyanobacteria, can use atmospheric nitrogen (N2 ) for their nitrogen source
Indicate whether the statement is true or false