Which type of media is designed to support the growth of one group of organisms, but not another, by containing antimicrobials, dyes, or alcohol?
a. Selective
b. Nutritive
c. Differential
d. Definitive
A
Many different types of media exist and serve many different purposes in clinical microbiology. Some types are selective in that they contain antimicrobials, dyes, or alcohol that cause the sup-port of the growth of one group of organisms but not another.
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The atomic number of hydrogen is 1. Based on this fact, all of the following must be true of hydrogen gas (H2 ) EXCEPT that it
A) is a stable molecule. B) shares one pair of electrons between the two hydrogen atoms. C) is a polar molecule. D) uses covalent bonds to form the molecule.
The ________ is an organelle in which some of the proteins synthesized on ribosomes and rough ER are modified and packaged
Fill in the blank(s) with correct word
What type of sensory receptors create the
action potential that we ultimately perceive as sound?
a. chemoreceptors b. mechanoreceptors c. proprioreceptors d. photoreceptors e. more than one of these
The death rate of organisms in a population exhibiting a Type III survivorship curve is:
a. usually correlated with density-independent causes. b. more or less constant throughout their lives. c. lower after the organisms survive to the critical age of establishment.