Microbiology: A Systems Approach
4th Edition
ISBN: 9780073402437
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 4, Problem 11TF
Summary Introduction
Introduction:
Bacterial envelope includes cell wall, cytoplasmic membrane and glycocalyx. Cytoplasmic or plasma membrane is composed of a phospholipid bilayer with the function of regulation of exit and entry of substances in and out of the cytoplasm. The cell wall contains mainly peptidoglycan and maintains the shape of the cell. Glycocalyx is a phospholipid layer that lies outside the cell wall and helps the bacteria to resist the immune reactions in host body.
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Bacteria of the genus Mycoplasma are distinguished from other bacterial cells by
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Chapter 4 Solutions
Microbiology: A Systems Approach
Ch. 4.1 - List the structures all bacteria possess.Ch. 4.1 - Identify at least four structures that some, but...Ch. 4.1 - Prob. 3AYPCh. 4.1 - Prob. 4AYPCh. 4.1 - Provide at least four terms to describe bacterial...Ch. 4.2 - Describe the structure and function of five...Ch. 4.2 - Prob. 7AYPCh. 4.3 - Prob. 2CFCh. 4.3 - Prob. 8AYPCh. 4.3 - Prob. 9AYP
Ch. 4.3 - Prob. 10AYPCh. 4.4 - Prob. 11AYPCh. 4.4 - Prob. 12AYPCh. 4.5 - List some differences between archaea and...Ch. 4.6 - Differentiate between Bergeys Manual of Systematic...Ch. 4.6 - Prob. 15AYPCh. 4.6 - Define a species in terms of bacteria.Ch. 4.6 - Prob. 2CFCh. 4 - Prob. 1CFCh. 4 - Which of the following is not found in all...Ch. 4 - Pili are tubular shafts in ____ bacteria that...Ch. 4 - Prob. 3MCQCh. 4 - Which of the following is a primary bacterial cell...Ch. 4 - Which of the following is present in both...Ch. 4 - Darkly stained granules are concentrated crystals...Ch. 4 - Bacterial endospores usually function in a....Ch. 4 - A bacterial arrangement in packets of eight cells...Ch. 4 - Prob. 9MCQCh. 4 - Prob. 10MCQCh. 4 - Prob. 11TFCh. 4 - A research microbiologist looking at evolutionary...Ch. 4 - Nanobes may or may not actually be bacteria.Ch. 4 - Both bacteria and archaea used to be known as...Ch. 4 - Prob. 15TFCh. 4 - Define the term ubiquitous and explain whether...Ch. 4 - Prob. 2CTQCh. 4 - Quorum sensing is a process used by many bacteria...Ch. 4 - Prob. 4CTQCh. 4 - Prob. 5CTQCh. 4 - Based upon your knowledge of cell wall structure,...Ch. 4 - Provide evidence in support of or refuting the...Ch. 4 - a.Describe the characteristics of an...Ch. 4 - Prob. 9CTQCh. 4 - Prob. 10CTQCh. 4 - Prob. 1CCCh. 4 - Prob. 2CCCh. 4 - Prob. 1VCCh. 4 - From chapter 1, figure 1.14. Study this figure....Ch. 4 - Prob. 1CM
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- These structures allow a bacterium to move through an aqueous environment: spores cilia flagella capsules fimbriaearrow_forwardMycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, which statement concerning mycoplasmas should be true? They are gram-negative. They are subject to lysis in hypotonic conditions. They lack a cell membrane as well. They should contain less cellulose than do bacteria that possess cell walls. They possess typical prokaryotic flagella.arrow_forwardGive the functions of the following bacterial structures. Granules Pili Flagella Endospores Capsulearrow_forward
- Describe the difference between Gram(-) and Gram (+) bacteria. Specifically focus on the differences associated with the cell wall and membrane regions.arrow_forwardA group of bacteria are gram stained. They show up as pink. Which bacteria group is most likely present? |- cyanobacteria Il - gram-positive bacteria III- spirochaete IV - chlamydia O a) I and II O b) II Oc) I, III and IV O d) Il and IIarrow_forwardExplain the importance of the Gram positve structure:- They contain a thick peptidoglycan layer and cytoplasmic lipid membrane.- These bacteria lack an outer membrane.- Have a lower lipid content and more teichoic acids.- They move around with the help of locomotion organs such as cilia and flagella.arrow_forward
- Prokaryotes stain as Gram-positive or Gram-negative because of differences in the_______. a. cell wall b. cytoplasm c. nucleus d. chromosomearrow_forwardWhich of the following does NOT describe a mechanism of antibiotic resistance among bacteria? enzymes to hydrolyze or chemically alter the antibiotics mutations in target molecules so that antibiotics can no longer bind efflux pumps cell wall diffusion barrier, e.g. Gram-negative outer membrane, Acid Fast cell wall of Mycobacterium O increased synthesis of porins to increase antibiotic diffusion across membranesarrow_forwardThe rough strain of Streptococcus pneumonia is not pathogenic because it lacks the present on the pathogenic smooth strain of Streptococcus pneumoniae. cell wall O endospore capsule gas vesicles peptidoglycan flagellumarrow_forward
- What type of bacterium can be oxygen dependent or independent.arrow_forwardMycoplasmas are pleomorphic bacteria. How do the unique structural characteristics of mycoplasmas relate to their bacterial morphology? Mycoplasmas have a low G + C genome content. Mycoplasmas appear Gram negative when a Gram stain is performed. Mycoplasmas lack a cell wall. Mycoplasmas form colonies with a fried-egg appearance.arrow_forwardWhy might clinical medicine have an interest in understanding bacterial cell division at the molecular level? Explain why a hyperthermophile would probably not be a human pathogen. Describe four factors that may have an influence on the effectiveness of an antimicrobial treatment. Explain why 70% or 80% alcohol is more effective than 100% alcohol in controlling microorganisms.arrow_forward
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