The termite hindgut is variable in oxygen concentration, with distinct microbial niches maintained by patterns of microbial oxygen consumption.   entirely anoxic, preventing microbial colonization   entirely oxic because oxygen is needed for activity of the digestive enzymes   entirely oxic or entirely anoxic depending upon the diet of the termite.

One of the most common observations in many metabolic diseases is: An increase in the diversity of gut microbe species A decrease in general inflammation levels A decrease in the diversity of gut microbe species A specific causal link between a single bacterial species and a disease

The Legionella bacteria grows best in  cold, running water. warm, stagnant water. cold, moving air. warm, non-moving air.

The presence of a fuel molecule in the cytoplasm does not ensure that the fuel molecule can be effectively used. Give two examples of how impaired transport of metabolites between compartments leads to disease.

Which of the following is a reason that specific pathogens tend to infect specific tissues? Most tissues are resistant to microbial exotoxins   There are chemical and physical differences between tissues.   Microbes preferentially target external tissues, such as skin, as the environment is more favorable for their growth than inside the body.   Tissues with neutral pH are colonized but those with acidic or alkaline pH are not.

H. pylori grows optimally in an acidic environment, such as the stomach, this organism is a/an barophile. neutrophile. O acidophile. O alkalinophile.

A. Which of the following organisms is most closely related?

Most pathogens are found in this temperature group. O Psychrophile Mesophile O Thermophile

Explain the role of pylori in the pathogenesis of peptic ulcers. Which populations are most susceptible to peptic ulcers? Is H. pylori normal flora? If so, what causes the species to become pathogenic? Construct at table to compare and contrast the 5 steps of microbial pathogenesis. How does extracellular growth differ from intracellular growth? Diagram the 5 step pathogenesis cycle for coli O157:H7, an extracellular, intestinal pathogen acquired by consuming contaminated food/water. Be sure to include the role of exoenzymes and the Shiga exotoxin in your diagram. (2 points) Explain the pathogenesis of Listeria monocytogenes. Be sure to include temperature regulation, intracellular growth, and at risk groups in your discussion.

True or false: Bacillus prefers to sporulate as soon as True O False possible upon sensing any nutrient limitation