Ethylene oxide is
A. used as an antiseptic against anaerobes.
B. sporicidal.
C. only effective with high heat.
D. a halogen.
E. the active agent in household bleach.
Answer: B
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Which of the following characteristics of protein degradation in eukaryotic cells is not true of protein degradation in bacterial cells?
A. Proteins with an Arg residue at their N-termini have short half-lives. B. Proteins are degraded by a large, barrel-shaped protease. C. Proteolysis is ATP dependent in regulated protein degradation. D. Protein degradation is directed by the covalent attachment of ubiquitin.
The dark pink color at the top of this picture represents the ____ biome
a. temperate deciduous forest b. chaparral c. tundra d. temperate grassland e. boreal forest
Roan cattle are the heterozygous hybrids of a cross
between a white individual and a red individual. If a roan bull were crossed with a red cow, their offspring would show which of the following ratios? a. all roan b. 1 red: 2 roan: 1 white c. 1 red: 1 white d. 1 red: 1 roan e. all red
All of the following are predicted effects of continued global warming except:a
greater impact on plant species due to their inability to move about. b. thermal expansion of a warmer ocean. c. increased precipitation and flooding in mid-latitude continental interiors. d. increased frequency and intensity of storms. e. reproductive failure in some species, such as Adélie penguins