Compare and contrast the functions microbes serve in the digestive systems of both humans and rumens (e.g., cattle)
What will be an ideal response?
Answer: Answers will vary but should focus on humans having a high cell localized density in the colon (large intestine), whereas rumens have higher microbial populations in the rumen. Microbes in both systems aid in digestion and improve nutrition/health of the host.
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The additional supplementation of ________ make developing growth media for culturing mycoplasmas especially challenging
A) unsaturated fatty acids B) sterols C) vitamins D) unsaturated fatty acids, sterols, and vitamins
Of the following, which does NOT characterize a
population in genetic equilibrium? a. large population size b. no mutation c. differential reproduction d. absence of gene flow e. random mating
In order for high level expression of the E. coli lac operon to occur, a complex of catabolite activator protein and ________ must be bound to the DNA near the promoter.
Fill in the blank(s) with the appropriate word(s).
When the London underground (subway) system was built in the nineteenth century, mosquitoes moved into the tunnels and became adapted to biting the customers and small animals that inhabit the subway system. Like people, mosquitoes can freely enter and
leave through the tunnel entrances. Recently, DNA analysis and attempts to cross-breed above-ground mosquitoes with underground mosquitoes indicate that there are now two different species. The underground insects are visibly larger. Which term best describes what has happened? A) behavioral incompatibility B) population bottleneck C) temporal isolation D) sympatric speciation