The shortest time required to kill or inactivate all the microbes in a sample at a specified temperature is called the
A. thermal death time (TDT).
B. death phase point.
C. sporicidal time.
D. thermal death point (TDP).
Answer: A
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Which of the following terrestrial ecosystems has the highest rate of primary productivity
A) tropical rainforest B) prairie C) tundra D) marsh E) temperate rainforest
The eukaryotic transcription initiation complex is (check all that apply)
A. only associated with RNA polymerase I. B. transcription of virtually all genes transcribed by RNA pol II requiring the same suite of general factors. C. interactive with activators through DNA looping. D. responsible for highly regulated transcription levels. E. a basal factor associated with RNA pol II after positioning RNA pol II at the start site.
Figure 38.15
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Use the figure above to answer the following question.
What is the partial pressure of oxygen at the start of the systemic capillary beds?
A. 40 mm Hg B. 100 mm Hg C. 70 mm Hg D. 104 mm Hg E. 130 mm Hg
The compound ethylene oxide is used in
A) sanitization. B) sterilization. C) antisepsis. D) degerming. E) disinfection.