1. An outer membrane that contains specialized lipopolysaocharides are found in
ID: 266826 • Letter: 1
Question
1. An outer membrane that contains specialized lipopolysaocharides are found in which type of microorganism? A) Gram negative bacteria B) Gram positive bacteria C Aaid fast bacteria D) Rleomorphic bacteria E Bacteriophage 2. A microbiologist inoculates a flask of broth with 1 ml of 100 bacterial cells/ml. The generation time of the spedes is 1 hour, and there is no lag phase. How long will it be before the culture contains more than 6,000 cells/ml? A) 12 hours B) 6 hours C 2 hours D) 4 hours E 10 hours 3. Which of these organisms have a cell wall made up of peptidoglycan? A) Diatoms B) Saphyl oooo us aureus C Amoeba proteus D) Aspergillus niger Mumps virus 4. All of the following structures allow bacteria to ding onto surfaces ar A) Rmbriae B) Sime layer C Capsule D) Indusion bodies E All of the above nd form biofilms EXCEPTExplanation / Answer
1. A. Gram negative bacteria.
Lipopolysaccharide is found in the outer membrane of Gram negative bacteria.
2. B. 6 hours.
There are 100 bacteria/ml in 1 ml of broth in the beginning. The generation time of bacteria is one hour. Therefore after 6 hours there will be 6400 bacteria/ml.
3. B. Staphylococcus aureus.
Petidoglycan is found in the cell wall of bacteria and S.aureus is a bacteria.
4. D. Inclusion bodies.
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