Which of the following antibiotics is produced by bacteria in the genus Streptomycetes? 

A. Chloramphenicol 
B. Tetracycline
C. Vancomycin
D. All of the choices are correct.


Answer: D

Biology & Microbiology

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In complex land plants, the diploid stage is resistant to adverse environmental conditions, such as dwindling water supplies and cold weather. The diploid stage progresses through which sequence?

a. gametophyte ? male and female gametes b. spores ? sporophyte c. zygote ? sporophyte d. zygote ? gametophyte e. spores ? gametophyte

Biology & Microbiology

Blood flows from the right ventricle to the ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

__________ is the science of making hypotheses about evolutionary relationships among clades.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Nutritional mutants in Neurospora can be "cured" by treating the medium with substances in the defective metabolic pathway. What determines whether the mutant strain (auxotroph) is "cured" by a particular substance?

What will be an ideal response?

Biology & Microbiology