Describe a biofilm and contrast a biofilm from that of normal human microbiota. List the major branches of microbiology and define the area of study of each branch.  Define Emerging Infectious Disease (EID) and provide examples of a prevalent EID.

Define the term ubiquitous and describe how this term is appropriately used to describe microbes on earth.

Name 3 beneficial activities of microorganisms.

Explain the significance of any two historical achievements in proving the role of microorganisms in human health and disease and maintaining the health of the environment. Be sure to describe the current classification of microorganisms.

In terms of food items, bacteria typically attack: cereal grains. soft-skinned vegetables. meats and dairy products. acidic fruits.

Interactive Microbiology: The Human Microbiome ← microbiota microbial antagonism transient parasitism opportunistic infections resident commensalism mutualism pathogenic infections The normal disease. Symbiotic relationships fall into one of three categories: benefits and the other is unaffected; consists of all the microbes that live on or in the host and that do not cause host. II The organisms are only present for only a short period of time in the body. Through microorganisms from establishing themselves. The normal microbiota exhibits in which both organisms benefit; and in which one organism benefits and the other is harmed. , in which one organism microbiota are long-term residents of the body, whereas the normal microbiota benefits the host by preventing pathogenic which protects the host from may occur when members of the normal microbiota colonize abnormal regions of the ASUS

Rank the following microbes in terms of their resistance to disinfectants: Gram-positive bacteria, Gram-negative bacteria, mycobacteria, bacterial endospores, vegetative protozoa, protozoan cysts, fungi, non-enveloped viruses, enveloped viruses.

Categorize the different media used relative to the most common bacteria

Media, such as Mueller-Hinton agar, that neither restricts the growth of certain microbes nor distinguishes between the types microbes that do grow is: Incorrect Answer: B. Differential only Correct Answer: O C. General purpose Rationale:

Individuals who have chronic periodontitis tend to have lower microbial diversity than those without. high horizontal gene transfer. significantly greater microbial diversity than those without. slightly greater microbial diversity than those without.