Salmonella are

A) Motile
B) Gram-positive rods
C) Coliforms
D) All of these choices are correct
E) Lactose fermenters


A) Motile

Biology & Microbiology

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Each antigen has one antigenic determinant site or epitope.

Answer the following statement true (T) or false (F)

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Pheromones are ____ signals

a. tactile b. electrical c. acoustical d. visual e. chemical

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Why did Mendel choose pea plants to experiment on?

A. Offspring of pea plants are fertile. B. They have a number of different distinct traits. C. They are self-fertilizing. D. They have a relatively short life cycle. E. All of theses are reasons Mendel chose pea plants to experiment on.

Biology & Microbiology

Cellular differentiation depends on which genes are turned on or expressed in the cell

Indicate whether the statement is true or false

Biology & Microbiology