How do zoonotic diseases emerge?
a. The infectious agent is not propagated in an animal.
b. The environment is not suitable for the propagation and transfer of the agent.
c. A new susceptible host species is present.
d. All of the above are correct.
Answer: C
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At some of the lowest light concentrations, ________ can still grow well due to their ________, which effectively harvest photons for energy
A) green bacteria / antenna pigments B) green bacteria / chlorosomes C) purple bacteria / antenna pigments D) purple bacteria / chlorosomes
Answer the following statements true (T) or false (F)
1. The proteome, rather than genome, is most directly responsible for the structure, function, and appearance of organisms. 2. Little scientific evidence is necessary when formulating a theory. 3. The maintenance of cell structure requires energy. 4. Discovery-based science and hypothesis testing are the two major scientific approaches that help us understand biology.
Which of the following statements about bile are false?
a. It emulsifies fats. b. It converts fats into droplets called micelles. c. It makes it easier for lipase to digest fats. d. It is yellow in color due to the presence of bilirubin. e. It emulsifies proteins.
The shortest time required to kill all the microbes in a sample at a specified temperature is called the
A. thermal death point (TDP). B. sporicidal time. C. thermal death time (TDT). D. death phase point.