Micro Biology > EXAM REVIEW > Florida Atlantic UniversityMCB 2004MCB_Exam_Review_3 (Fall, 2020) ALL ANSWERS ARE 100% CORRECT (All)

Florida Atlantic UniversityMCB 2004MCB_Exam_Review_3 (Fall, 2020) ALL ANSWERS ARE 100% CORRECT

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MCB2004 (Fall, 2020) Exam 3 Review Questions Complete ALL Questions and Submit on Canvas for 3% Points CHAPTER 13 1. List the different classes of microorganisms that resident biota belongs to. Re... sident biota can belong to bacteria, fungi, virus, protozoan. 2. List the different ways in which a new born can be seeded with normal biota. The new born can either be seeded with lactobacillus which is a resident biota of the mother vagina, a baby that is birthed through the birth canal will be colonized with this bacterium. While a baby that is delivered by cesarean section will be colonized by the normal biota of the mother’s skin. 3. List examples of prominent resident biota of the skin and mouth. Prominent resident biota of the skin includes: Staphylococcus, Corynebacterium, Candida, and Micrococcus. Prominent resident biota of the mouth includes: Staphylococcus, Streptococcus. 4. List examples of some congenital infectious diseases – usually from causative agents capable of crossing the placental barrier. Some congenital diseases that can cross the placenta barrier include: Hepatitis B, Gonorrhea, Syphilis, Tuberculosis, Rubella, Herpes and etc. 5. Which phenomenon describes the transmission of disease from mother to fetus (with respect to the order/route of transmission only). 6. List some bacterial virulence factors that enable survival within the host. Virulence factors that enable survival within the host include capsules, endotoxins, exotoxins and exoenzymes. 7. Differentiate between endogenous and exogenous infections. Exogenous is an infectious agent that originates from outside the body, while endogenous is an infectious agent that is already existing on or inside the body. 8. What was the essence of the Human Microbiome Project? The essence of the Human Microbiome Project is to provide comprehensive characterization of microbiota relating to humans. 9. List the portals of entry of an infectious agent. Portals of entry of an infectious agent are the Skin & Mucous Membranes, Respiratory tract, Digestive tract, Genito-urinary tract, and Placenta. 10. Differentiate between opportunistic and true pathogens. Opportunistic pathogens cause diseases in compromised individuals, while true pathogens cause diseases in healthy people. 11. What is the difference between a commensal and a parasite? Commensal: Is a form of symbiosis in which one organism derives a benefit while the other or host is unaffected. Parasite: an organism that lives on or in another organism, deriving benefit from living on or in that other organism, while not contributing towards that other organism sufficiently to cover the cost to that other organism. [Show More]

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