1. A deviation from health where tissues and organs are damaged and disrupted is

Question

1. A deviation from health where tissues and organs are damaged and disrupted is called? commensalism pathology c) disease d) infection el transient 2. Microbe-Human Interactions can be investigated in terms of a) Clinical infection (individual) b) Epidemiology (population) c) All of the above d) None of the above 3, What factor prevents the stomach from being colonized by most microbes? a) Peristalsis b) Digestive enzymes c) Secretory IgA d) Bile e) Acids 4. What are the first organism(s) to colonize the upper respiratory tract? Oral st Lactobacilli Staphylococcus aureus Neisseria sp el Haemophilus sp 5, The greatest number of pathogens use what as a portal of entry? a) skin b) gastrointestinal tract respiratory tract d) urogenital tract c) transplacenta 6. What exoenzyme secreted by some pathogenic microorganisms digests the principal fiber of e and is an invasive factor for some microorganis nnective t a) coagulase b) mucinase c) hyaluronidase d) collagenase e) keratinase 7. What is the pattern of infection where the infection remains localized at the portal of entry but the toxins produced by the pathogen are carried by the blood to the actual target tissue? systemic infection c) toxemia d) mixed infection localized infection 8. What term is defined as the number of new cases of disease over a certain time period, as compared with the general healthy population? a prevalence b) morbidity rate c) epidemiology incidence

Explanation / Answer

1. C. A disease is something which can lead to deviation of health and damage the organs and tissues.

2. C. Microbe-human interaction can be investigated in terms of clinical infection as well as epidemiology as epidemilogy will not only help us to figure out the incidence, but also it will help us to find out the destribution and ways to prevent it, however the clinical infection will help us to find its incubation period and invasion.

3. E. The presence of acid in the stomach such as hydrochloric acid helps to kill ingested microbes and prevent the stomach from being colonized by most microbes, it also provides the acid environment needed for effective digestion by the pepsins.

4. A.Oral streptococci is the first organism to colonize the upper respiratory tract.

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