The method of removing vegetative microbial life forms and debris to reduce contamination to safe levels is termed _________.
Microorganisms require small quantities of _________blank fo…
Microorganisms require small quantities of _________blank for enzyme function and maintenance of protein structure.
The term obligate refers to ____________.
The term obligate refers to ____________.
You inoculate a bacterium into three tubes of nutrient broth…
You inoculate a bacterium into three tubes of nutrient broth medium containing added salt: 0.5% NaCl, 5% NaCl, and 15% NaCl. After incubation, you notice significant turbidity in the 15% NaCl medium and modest turbidity in the 5% NaCl medium. There is no growth in the third tube. This organism would be termed ___________.
Cultures of a bacterial strain were incubated in a refrigera…
Cultures of a bacterial strain were incubated in a refrigerator (5°C), on a lab bench (22°C), in a 37°C incubator, and in a 50°C incubator. After incubation, there was no growth at 37°C and 50°C, slight growth in the refrigerator, and abundant growth on the lab bench top. Which term best describes this organism?
Some microbial control agents are able to _________blank cel…
Some microbial control agents are able to _________blank cell proteins by breaking bonds that maintain the native state, the three-dimensional configuration of the proteins.
What structures are used by bacteriophages to attach to host…
What structures are used by bacteriophages to attach to host cell receptors?
The shortest length of time required to kill all test microb…
The shortest length of time required to kill all test microbes at a specified temperature is the thermal death point.
_________blank is a control method that removes microorganis…
_________blank is a control method that removes microorganisms rather than inhibiting or killing them.
The lowest temperature required to kill all microbes in a sa…
The lowest temperature required to kill all microbes in a sample within 10 minutes is the thermal death ________.