Which of the following factors does not affect the efficiency of a germicide?
A) how the object is used
B) what infectious agents are most likely present
C) the number of microbes to be killed
D) the presence of excessive organic substances like blood, soil, or fecal matter
E) the presence of excessive inorganic substances like minerals and salts in hard water
Answer: A
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Which of the following is a common feature of primary insect symbionts?
A) accelerated mutation rates B) extreme genome reduction C) high A+T / low G+C content D) accelerated mutation rates, extreme genome reduction, and high A+T / low G+C content
Which of the following organisms is currently considered one of the primary photosynthetic organisms in the oceans?
A. green algae B. cyanobacteria C. diatoms D. red algae E. None of the answers options is correct.
The physical location of a particular gene on a chromosome is called:a
an allele. b. a locus. c. a trait. d. a chromatid. e. None of these.
Optical density
A. is directly related to the population of bacteria B. is used to measure bacterial toxicity C. None of these D. is directly related to the length of bacteria E. is measured by spread plate technique