When culturing for Mycobacterium, rapid-growers usually produce colonies within how many days after subculture?
a. At least 7 days
b. Longer than 7 days
c. 3 to 4 days
d. 2 to 3 days
C
The rate of growth is an important criterion for determining the initial category of an isolate. Rapid-growers usually produce colonies within 3 to 4 days after subculture. Even a rapid-grower, however, may take longer than 7 days to produce colonies initially because of the inhibition by a harsh decontaminating procedure.
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The population growth rate is negative when
A. death rate is greater than birthrate. B. birthrate is greater than death rate. C. better health care reduces the death rate and increases survivorship of newborns. D. all couples are married but average fewer than two children apiece. E. a country becomes poorer, because it is related to economic growth.
The synaptic ________ is the narrow space between two neurons
Fill in the blank(s) with correct word
What is the correct order of reproduction in members of phylum Zygomycota?a. Hyphae of opposite mating strains touch each other.b. Gametangia merge, nuclei pair and fuse.c. Spores are released from the sporangium.d. Gametangia form at the end of the hyphae.e. A thick wall develops around the zygospore.
A. a - b - e - c - d B. a - b - c - d - e C. e - d- a - b - c D. a - d - b - e - c
The spinal cavity and cranial cavity are the two parts of the:
A) skeletal system. B) ventral cavity. C) dorsal cavity. D) abdominopelvic cavity.