VCU BIOL 209 - Final Exam Study Guide (5 pages)

Previewing pages 1, 2 of 5 page document View the full content.
View Full Document

Final Exam Study Guide



Previewing pages 1, 2 of actual document.

View the full content.
View Full Document
View Full Document

Final Exam Study Guide

1564 views

A more general study guide for the 30 question, cummulative final exam


Pages:
5
Type:
Study Guide
School:
Virginia Commonwealth University
Course:
Biol 209 - Medical Microbiology
Edition:
1

Unformatted text preview:

BIOL 209 1st Edition Final Exam Study Guide What are the different methods used to identify specific microorganisms Polymerase Chain Reaction PCR assay based on DNA sequences unique to a particular microbe ELISA assay uses antibodies to detect structures unique to a particular microbe Informal classification used if microbe has not developed reagents uses cell shape dye staining properties metabolic properties and growth requirements unique to a particular microbe What are the differences in envelope structure that distinguish Gram positive and Gramnegative bacteria Gram positive bacteria firmicutes contain teichoic acid and lipoteichoic acid with a thick cell wall peptidoglycan layer surrounding an inner cell membrane Gram negative bacteria proteobacterials contain porin proteins lipoproteins and lipopolysaccharides with a thin cell wall peptidoglycan layer sandwiched between an inner and outer cell membrane List 3 extracellular appendages and describe their function Flagella provide mobility and in some cases adhesion Conjugation pili are long protein fibers that mediate the initial attachment of conjugating bacteria which allows the transfer of DNA from one bacterium to another Fimbrae are relatively short protein fibers that contribute to adherence to inanimate surfaces other microorganisms and select host tissues Biofilms are complex communities of microbes that adhere to a surface and each other through the production of a very thick and sticky slime layer Compare a slime layer and a capsule list their similarities and differences A slime layer consists of loosely associated glycocalyx which helps retain water and nutrients A capsule is a thicker glycocalyx associated closely with the envelope It can provide protection by blocking phagocytosis by host immune cells What are the characteristics of a biofilm What advantage does a cell gain by living in it A biofilm is complex dynamic and sticky A cell that lives on biofilm becomes highly resistant to physical and



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Final Exam Study Guide and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Final Exam Study Guide and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?