One of the common defense mechanisms pathogenic bacteria have to avoid phagocytosis is the presence of:(a) Pili(b) A cell membrane(c) Peptidoglycan(d) A capsule(e) Endospore formation
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One of the common defense mechanisms pathogenic bacte
ria have to avoid phagocytosis is the presence of:
(a) Pili
(b) A cell membrane
(c) Peptidoglycan
(d) A capsule
(e) Endospore formation
Step by step
Solved in 3 steps
- Most medically useful antibiotics interfere with either peptidogly¬can synthesis or ribosome function. Why would the cytoplasmic membrane be a poor target for antibacterial medications?Most medically useful antibiotics interfere with either peptidoglycan synthesis or ribosome function. Why would the cytoplasmic membrane (in general) be a poor target for antibacterial medications?In 2001, endospores of Bacillus anthracis, the causative agent of anthrax, were sent to government officials and news agencies via the mail. In response, the US postal service began to irradiate mail with UV light. Was this an effective strategy? Why or why not? Explain
- You are sneaky and would like to avoid the deadly grip of phagocytes. Your sweet tooth should help you. a. What is the structure being described? b. What is the chemical composition of this structure? c. What is the function of the structure, and how does it benefit the bacteria?What implications does the complex hydrophobic mycobacterial cell wall have in terms of treating diseases caused by these bacteria?Antibiotics that target the cell wall have no effect on the existing peptidoglycan. So how does the antibiotic affect bacterial cells so that the cell walls become weak and the cell lyses?
- Let’s say you wanted to look at cells of Bacillus cereus, which are rod-shaped cells that are about 4 µm long. If you were observing B. cereus with a microscope using the high-power lens, how big would the cells appear to be when you look at them?MICROBIOLOG.Y: Regarding molecules that move across membranes: How would you characterize the molecules that move passively across the cell membrane by diffusion? How would you characterize the molecules that move passively across the cell membrane by osmosis? What is the difference in these two mechanisms and why is this important?A. iMAGE 1 1. What is a special characteristic of the microorganism shown? CHOICES: A.It shows colonies in clusters. ,B.It's movement is aided by its, C.monotrichous flagella., D.It's cells occur in pairs., E.It contains a waxy lipid on its walls., F.It has an endoflagella. ,GIt contains an endospore., H.It shows colonies in chains. I.It's movement is aided by its peritrichous flagella. J. It is eukaryotic. 2. What staining method is done? CHOICES: A. Ziehl-Neelsen Stain, B. Schaeffer C. Fulton Stain, D. Flagella Stain, E. Gram Stain, F. KOH MounT 3.How do you describe the shape of the microorganism ? CHOICES:A. Filamentous B. Cocci ,C. possible ,D. Spirochete, E. Bacilli ,F. Pleomorphic 4. How do you describe the shape of the microorganism? CHOICES:A. Staphylococcus aureus ,B. Vibrio cholerae, C. Leptospira interrogans, D. Escherichia coli ,E. Malassezia furfur ,F. Neisseria gonorrhoeae ,G. Streptococcus pyogenes , H. Bacillus anthracis, I. Mycobacterium tuberculosis 5. What could…
- From a functional standpoint, how does the flagellum ofeukaryotic cells differ from that of prokaryotic cells?Hydrolytic extracellular enzymes which decompose recalcitrant SOM are typically secreted by which of the following microorganism? -algae -Cyanobacteria -archea -fungi -MyxobacteriaWhy is biofilm development in catheters (tubes that can be inserted into a body cavity, duct or vessel which allow drainage or injection of fluids) such a dangerous source of infection in hospitals?