Heat-sensitive liquids are typically sterilized by
a. autoclaving.
b. pasteurization.
c. filtration.
d. phenolic compounds.
Answer: C
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How does the antibiotic rifampicin prevent transcription of RNA?
A) Rifampicin blocks binding of RNA polymerase to the promoter. B) Rifampicin prevents chain elongation by preventing formation of the phosphodiester bond. C) Rifampicin prevents the chain termination, so transcripts are too long and are rendered nonfunctional. D) Rifampicin blocks ribosomal RNAs from forming functional ribosomes. E) Rifampicin blocks translation by preventing the mRNA from being processed.
This figure describes a typical example of ____
a. biotic potential growth b. exponential growth c. logistic growth d. logarithmic growth e. density-dependent growth
Which of the following represents the activation energy needed for the noncatalyzed reverse reaction, C + D ? A + B, in the figure?
A) a B) b C) c D) d E) e
Describe what is known about the lifespan of hydrothermal vent communities and how organisms may have adapted to these factors
What will be an ideal response?