Which of the following germicides is/are also sporicidal?
A. Chlorine
B. Chlorhexidine
C. Betadine
D. Phenolics
E. All of these except phenolics.
Answer: E
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According to the endosymbiont hypothesis, eukaryotic cells evolved after and as a consequence of ____
a. the cyclic pathway of photosynthesis b. anaerobic respiration c. cell division d. mutual dependency e. chemosynthesis
Tiny organisms living between the particles of sand and mud on beaches are collectively referred to as ________
Fill in the blank(s) with correct word
Two species of frogs belonging to the same genus occasionally mate, but the embryos stop developing after a day and then die. These two frog species separate by _____
A) reduced hybrid viability B) hybrid breakdown C) reduced hybrid fertility D) gametic isolation
Which ancient habitat has allowed the formation of the most abundant fossils?
A. Eroding hillsides B. Deserts C. Polar ice caps D. Rivers and shallow seas E. Rocky plateau