EBK MICROBIOLOGY:W/DISEASES BY BODY...-
5th Edition
ISBN: 9780134608242
Author: BAUMAN
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 1CM
Using the following terms, fill in the following concept map that describes the bacterial cell wall. You can also complete this and other concept maps online by going to the MasteringMicrobiology Study Area.
Glycan chains
Gram-negative cell wall
Gram-positive cell wall
Lipid A
Lipopolysaccharide (LPS)
N-acetylglucosamine
Peptidoglycan
Periplasm
Porins
Teichoic acids
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Students have asked these similar questions
Which of the following statement/s is/are true about gram positive bacteria
Cell wall has thick peptidoglycan layer
Cell wall lipid content is very low
Lipopolyscharride layer is absent
All of the above
Which of the following statement about 3 bacterial cell wall is incorrect
Peptidoglycan consists of long polysaccharide chainscross-linked with amino acids.
The cell wall establishes a bacterium as a coccus, bacillus, or spirillum.
The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids.
Gram- negative cells have a membrane both inside andoutside their cell walls.
Gram-positive cells have more peptidoglycan in their cell walls gram-negative cells
Several students argued about why Gram-positive cells stain purple with the Gram stain whereas Gram-negative cells stain pink.
Which explanation is correct?
Multiple Choice
Alcohol dehydrates peptidoglycan; the thick layer of dehydrated peptidoglycan in Gram-negative cells prevents
the crystal violet from being washed out
Safranin stains lipopolysaccharide, and because only Gram-negative cells have lipopolysaccharide, those cells
look pink.
Safranin stains lipopolysaccharide, and because only Gram-negative cells have lipopolysaccharide, those cells
look pink.
Alcohol dehydrates peptidoglycan; the thick layer of dehydrated peptidoglycan in Gram-positive cells prevents
the crystal violet from being washed out.
Crystal violet specifically stains peptidoglycan, and because Gram-positive cells have a thicker peptidoglycan
layer those cells look purple.
Alcohol destroys lipopolysaccharide in Gram-negative cell walls, allowing safranin to enter the cells and staining
them pink.
Chapter 3 Solutions
EBK MICROBIOLOGY:W/DISEASES BY BODY...-
Ch. 3 - Prob. 1TMWCh. 3 - In 1985, an Israeli scientist discovered the...Ch. 3 - Why is a pilus a type of fimbria, but a flagellum...Ch. 3 - Why is the microbe illustrated in Figure 3.2 more...Ch. 3 - The Big Game College sophomore Nadia is a star...Ch. 3 - When the bacterium Escherichia coli is grown in a...Ch. 3 - Prob. 6TMWCh. 3 - Why do scientists consider bacterial and archaeal...Ch. 3 - Why did scientists in the 19th and early 20th...Ch. 3 - Why do some scientists consider archaea, which are...
Ch. 3 - Why are eukaryotic glycocalyces covalently bound...Ch. 3 - Many antimicrobial drugs target bacterial cell...Ch. 3 - Colchicine is a drug that inhibits microtubule...Ch. 3 - A cell may allow a large or charged chemical to...Ch. 3 - Which of the following statements concerning...Ch. 3 - A 9 + 2 arrangement of microtubules is seen in...Ch. 3 - Which of the following is most associated with...Ch. 3 - Which of the following is not associated with...Ch. 3 - Which of the following is true of Svedbergs? a....Ch. 3 - Which of the following statements is true? a. The...Ch. 3 - Prob. 8MCCh. 3 - Bacterial flagella are ______________. a. anchored...Ch. 3 - Prob. 10MCCh. 3 - A Gram-negative cell is moving uric acid across...Ch. 3 - Gram-positive bacteria _______________. a. have a...Ch. 3 - Endospores ________________. a. are reproductive...Ch. 3 - Prob. 14MCCh. 3 - Dipicolinic acid is an important component of...Ch. 3 - Match the structures on the left with the...Ch. 3 - Match the term on the left with its description on...Ch. 3 - Label the structures of the following prokaryotic...Ch. 3 - Label each type of flagellar arrangement.Ch. 3 - A scientist who is studying passive movement of...Ch. 3 - Describe (or draw) an example of diffusion down a...Ch. 3 - Sketch, name, and describe three flagellar...Ch. 3 - Prob. 3SACh. 3 - The term fluid mosaic has been used in describing...Ch. 3 - A local newspaper writer has contacted you, an...Ch. 3 - Prob. 6SACh. 3 - Compare bacterial cells and algal cells, giving at...Ch. 3 - Contrast a cell of Streptococcus pyogenes (a...Ch. 3 - Differentiate among pili, fimbriae, and cilia,...Ch. 3 - Prob. 10SACh. 3 - Prob. 11SACh. 3 - Prob. 12SACh. 3 - What is the function of glycocalyces and fimbriae...Ch. 3 - Prob. 14SACh. 3 - Compare and contrast three types of passive...Ch. 3 - Prob. 16SACh. 3 - Prob. 17SACh. 3 - Prob. 18SACh. 3 - Prob. 1CTCh. 3 - Methylene blue binds to DNA. What structures in a...Ch. 3 - Prob. 3CTCh. 3 - Prob. 4CTCh. 3 - A researcher carefully inserts an electrode into...Ch. 3 - Prob. 6CTCh. 3 - An electron micrograph of a newly discovered cell...Ch. 3 - An entry in a recent scientific journal reports...Ch. 3 - Prob. 9CTCh. 3 - Prob. 10CTCh. 3 - Prob. 11CTCh. 3 - Prob. 12CTCh. 3 - Prob. 13CTCh. 3 - Prob. 14CTCh. 3 - Using the following terms, fill in the following...
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- Microbiologists use the Gram stain to differentiate among two groups of bacteria. How do Gram-positive and Gram-negative bacteria differ? Question 1 options: the presence or absence of peptidoglycan in the cell wall the presence or absence of muramic acid in the cell wall the presence or absence of outer plasma membrane the lipid composition of plasma membrane none of the above.arrow_forwardQuestion 4 Refer to the diagram below to answer the following questions: Bacteria Eukarya Green filamentous Slime Archaea bacteria Entamoebae moulds Animals Fungi Spirochetes Methanosarcina Methanobacterlum Proteobacteria Halophiles Gram - Plants Methanococcus T. celer Thermoproteus Cyanobacteria. positives Cililates Planctomyces Flagellates Pyrodictium Bacteroides Cytophaga Thermatoga Trichomonads Microsporidia Diplomonads Aquifex a) What do Bacteria, Archaea, and Eukarya refer to? (Blank 1) b) Which organism is most closely related to Pyrodictium (Blank 2) Blank # 1 Blank # 2arrow_forwardWhich of the following is not true about a gram-positive cell wall? It has plasma membrane inside cell wall It contains lipopolysaccharides (LPS) It maintains the shape of the cell It contains teichoic acidsarrow_forward
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