Once an unknown bacterium has been isolated in pure culture, what is the first step in the identification process?

What will be an ideal response?


determine the gram stain morphology

Biology & Microbiology

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Which type of speciation can occur when a population encompasses a vast territory that includes a variety of habitats?

a. Sympatric b. Stabilizing selection c. Gene flow d. Parapatric speciation e. Allopatric

Biology & Microbiology

Chlorosis, stunted growth with yellowing and

death of young leaves, is caused by a deficiency of a. nitrogen. b. zinc. c. magnesium. d. iron. e. any of these.

Biology & Microbiology

In radishes, red and white are the pure-breeding

colors, and long and round are the pure-breeding shapes, while the hybrids are purple and oval. The cross of a red, long radish and a white, round radish will produce an F2 generation in which a. the most common phenotype will be oval and purple. b. the purple color will occur with all three shapes of radish. c. the red color will occur with all three shapes of radish. d. all white, long forms produced will be purebreeding. e. all of these are true.

Biology & Microbiology

Which of the following delivers amino acids to ribosomes, one by one, in the order specified by a messenger RNA?

A. Transfer RNA B. Ribosomal RNA C. RNA polymerase D. DNA polymerase E. Gene

Biology & Microbiology