PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Textbook Question
Chapter 23.4, Problem 4CC
What kind of genetic evidence, in addition to 16S rRNA sequences, might have demonstrated that Negativicutes should be considered Gram positive?
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Chapter 23 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 23.1 - MICRO INQUIRY Refer to table 24.2 and determine...Ch. 23.1 - MICRO INQUIRY Why do Mycobacterium spp. have...Ch. 23.1 - Prob. 3MICh. 23.1 - Prob. 1.1CCCh. 23.1 - Prob. 1.2CCCh. 23.1 - Retrieve, Infer, Apply Why are actinobacteria of...Ch. 23.1 - Prob. 1.4CCCh. 23.1 - Retrieve, Infer, Apply Compare the morphology and...Ch. 23.1 - Prob. 1.6CCCh. 23.1 - Prob. 1.7CC
Ch. 23.1 - Prob. 1.8CCCh. 23.1 - Retrieve, Infer, Apply List the distinguishing...Ch. 23.1 - Prob. 2.2CCCh. 23.1 - Prob. 2.3CCCh. 23.1 - Retrieve, Infer, Apply Describe three ways in...Ch. 23.1 - Briefly describe the defining properties of genera...Ch. 23.1 - Prob. 2.6CCCh. 23.1 - Examine the ingredients list on a commercial...Ch. 23.2 - What growth or survival advantage might this type...Ch. 23.2 - What is the net yield of ATP for each glucose that...Ch. 23.2 - Prob. 3MICh. 23.2 - Prob. 1CCCh. 23.2 - Prob. 2CCCh. 23.2 - Prob. 3CCCh. 23.2 - Prob. 4CCCh. 23.2 - How are various species of Streptococcus...Ch. 23.2 - Of what practical importance are leuconostocs?...Ch. 23.2 - What is the difference between -hemolysis and...Ch. 23.3 - The presence of an electron transport chain in a...Ch. 23.3 - In addition to its Gram-staining characteristics,...Ch. 23.3 - What are the two sources of electrons for the H....Ch. 23.4 - Prob. 1CCCh. 23.4 - Suggest why C. tetani uses a sodium motive force...Ch. 23.4 - Prob. 3CCCh. 23.4 - What kind of genetic evidence, in addition to 16S...Ch. 23 - Prob. 1RCCh. 23 - Prob. 2RCCh. 23 - Prob. 3RCCh. 23 - Prob. 4RCCh. 23 - Prob. 5RCCh. 23 - Prob. 6RCCh. 23 - Prob. 7RCCh. 23 - Prob. 8RCCh. 23 - Prob. 9RCCh. 23 - Prob. 10RCCh. 23 - Even though actinobacteria are high G + C...Ch. 23 - Given that mycolic acids are essential for...Ch. 23 - Prob. 3ALCh. 23 - Prob. 4ALCh. 23 - Prob. 5ALCh. 23 - What physiological properties might account for...Ch. 23 - S. aureus strains that are resistant to...Ch. 23 - Prob. 8AL
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- Pseudomonas bacteria have porin proteins, are resistant to the chemical triclosan, and survive and can even multiply in quaternary ammonium compounds. True or False?arrow_forward14) A streptobacillus shaped bacteria have the following shape/sructure: a) long chain of capsule/rodshaped cells b) long chain of spherical-shaped cells c) a single spherical-shaped cell d) a single capsule/rod-shaped cell e) none of the above.15) If you are a passenger on the “Magic School Bus” and you want to “explore” the cytoplasmic component of a Gram -ve bacteria, you will have to go through: a) two membranes separated by periplasm and thick peptidoglycan region b) two membranes separated by periplasm and thin peptidoglycan region c) A glycocalyx and a membrane separated by a thin peptidoglycan region d) a thin peptidoglycan region & one membrane e) a thick peptidoglycan region & one membrane 16) If you are a passenger on the “Magic School Bus” and you want to “explore” the cytoplasmic component of a Gram +ve bacteria, you will have to go through: a) two membranes separated by periplasm and thick peptidoglycan region b) two membranes separated by periplasm and thin…arrow_forwardwhat kind of experiment can prove that azithromycin (antibiotics) has has an effect of on Quorum Sensing in Pseudomonas aeruginiosa.arrow_forward
- I am doing my microbiology homework and I need help with these questions: 1) List the structures ALL bacteria possess. 2) Identify three structures SOME but not all bacteria possess. 5) Describe the structure and function of three different structures found outside of the bacterial cytoplasmic membrane. 6) Differentiate between the two main types of bacterial envelope structures. 7) Why are Gram-positive cell walls stronger than Gram-negative cell walls? 8) Name a substance in the envelope of SOME bacteria that can cause severe symptoms in humans. 9) Describe the causes of sporogenesis and germination 10) Compare and contrast the major features of archaea, bacteria and eukaryotes by completing the table below. Characteristic Bacteria Archaea Eukarya Chromosome Type of Ribosomes Protein Synthesis Similar to Eukarya Sterols In Membrane Membrane-bound Organelles Peptidoglycan in Cell wallarrow_forwardAccording to Philip Bell’s viral eukaryogenesis hypothesis, genes for DNA replication, RNA transcription, protein translation, and histone proteins were all provided by: an endosymbiotic gram-negative eubacterium an endosymbiotic archaeobacterium a gram-positive eubacterial host cell a double-stranded DNA virus an archaeobacterial host cellarrow_forwardWhat advantage do quorum-sensing systems confer onbacterial cells?arrow_forward
- Which among A-D is false regarding growth and/or analysis of a bacterial culture? A) O Fed-batch growth: typically results in an increased yield of cells over that obtained with batch growth B) O Auxotroph: requires addition of specific growth factors in order to grow C) O Prototroph: typically the wild type strain that possesses all the features indicative of the species D) O None of A-D is false; all are true statementsarrow_forwardA bacterium has the following characteristics: I. It adheres to the human intestinal lining using a feature that protects it from phagocytes , bacteriophages, and dehydration. II. It can survive being boiled. III. It contains no plasmids and relatively little peptidoglycan. Which of the following characteristics allows this bacteria to survive in a human who is taking penicillin pills? A. gram-negative cell wall B. peptidoglycan in the cell wall C. lipopolysaccharides in the cytoplasm D. long polypeptides in the cell wallarrow_forwardGram-negative bacteria are surrounded by two membrane bilayers separated by a space termed the periplasm. The periplasm is a multipurpose compartment separate from the cytoplasm. The periplasm has a distinct oxidizing environment that allow certain key protein structural features to be formed. Can you identify an amino acid(s) that would be affected by this oxidizing environment? How would it be affected, and what structural features would be sensitive to this environment? Can you discuss the implications of this from a standpoint of recombinant protein expression?arrow_forward
- Describe two (2) importance of understanding the types and nature of bacteria according totemperature to daily human living.arrow_forwardMicrobiologists announced the discovery of over 30 new species of bacteria that thrivebetween the teeth and gums of humans. The bacteria could not be grown in the researchers’ laboratories,nor were any of them ever observed via any kind of microscopy. If they couldn’t culture them or see them,how could the researchers know they had discovered new species? If they couldn’t examine the cells for thepresence of a nucleus, how did they determine that the organisms were prokaryotes and not eukaryotes?arrow_forwardIn general, why might cell-wall inhibiting antimicrobial drugs be less effective on gram-negative bacteria compared to gram-positive bacteria? The gram-negative bacteria digest these drugs at a much higher rate than gram-positive bacteria. The mutation rate of gram-negative bacteria is much greater than that of gram-positive bacteria. The outer membrane of the gram-negative bacteria inhibits penetration of the drug. The peptidoglycan found in gram-positive bacteria is structurally different from that in gram-negative bacteria. The gram-negative bacteria do not synthesize peptidoglycan.arrow_forward
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