What are the functions of the hydrochloric acid produced by the stomach?
What will be an ideal response?
activates pepsin, kills disease-causing organisms
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Horizontal gene transfer between host organisms and their symbionts
A) happens frequently because of coevolution. B) causes genome reduction in the symbiont and genome expansion in the host. C) causes genome reduction in both the host and the symbiont. D) has been observed, but is considered a rare event.
Eukaryotic transcription factors:a
are known as CAPs. b. may be activators or repressors of transcription. c. are inducers. d. are corepressors. e. are also known as enhancers.
One simple thing that you can do to help safeguard the environment is to eat a diet consisting only of organisms that are
A) producers. B) primary consumers. C) secondary consumers. D) a mix of producers and consumers.
When bacteria are exposed to nutrient-poor conditions, they form thick-walled structures that contain the chromosome and a small amount of cytoplasm. These structures are called
A. nucleoids. B. endospores. C. exospores. D. pseudomonads. E. plasmids.