Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 10R
NAME IT What group of microbes is characterized by cells that form filaments, reproduce by spores, and have peptidoglycan in their cell walls?
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Students have asked these similar questions
Mycoplasmas 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.
Bacteria of the genus Mycoplasma are distinguished from other bacterial cells by
1) cell walls composed solely of amino acids.
O 2) the absence of a cytoplasmic membrane.
O 3) the absence of a cell wall.
O 4) Have large capsules.
5) the presence of mycolic acid in their cell walls.
Mycoplasmas 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.
Chapter 4 Solutions
Microbiology: An Introduction (13th Edition)
Ch. 4 - DRAW IT Diagram each of the following flagellar...Ch. 4 - Endospore formation is called (a) _____. It is...Ch. 4 - DRAW IT Draw the bacterial shapes listed in (a),...Ch. 4 - Match the structures in column A to their...Ch. 4 - Why is an endospore called a resting structure? Of...Ch. 4 - Compare and contrast the following a. simple...Ch. 4 - Prob. 7RCh. 4 - Starch is readily metabolized by many cells, but a...Ch. 4 - Match the characteristics of eukaryotic cells in...Ch. 4 - NAME IT What group of microbes is characterized by...
Ch. 4 - Which of the following is not a distinguishing...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which of the following statements best describes...Ch. 4 - Which of the following is false about fimbriae? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - You have isolated a motile, gram-positive cell...Ch. 4 - The antibiotic amphothericin B disrupts plasma...Ch. 4 - How can prokaryotic cells be smaller than...Ch. 4 - The smallest eukaryotic cell is the motile alga...Ch. 4 - Two types of prokaryotic cells have been...Ch. 4 - In 1985, a 0.5-mm cell was discovered in...Ch. 4 - When E. coli cells are exposed to a hypertonic...Ch. 4 - Clostridium botulinum is a strict anaerobe; that...Ch. 4 - A South San Francisco child enjoyed bath time at...Ch. 4 - Live cultures of Bacillus thuringiensis (Dipel)...
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- Which of the following statement/s is/are true about gram negative bacteria Cell wall has thin peptidoglycan layer Cell wall lipid content is very low Lipopolyscharride layer is present All of the abovearrow_forwardGive the common name of a eukaryotic microbe that is unicellular,walled, nonphotosynthetic, nonmotile, and bud-forming.arrow_forwardI 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_forward
- Endospores are a) resistant to extreme temperatures b) produced by some prokaryotes c) can survive for decades d) all of the abovearrow_forwardOne major difference in the envelope structure between gram positive bacteria and gram-negative bacteria is the presence or absence of a cytoplasmic membrane. True or false?arrow_forwardA clinical microbiologist is studying a microbe that can cause infections and gastrointestinal disease in humans, and which can also survive and reproduce in mice. A dormant cyst form of the microbe infects human hosts through fecal-oral transmission if they come in contact with mouse droppings and don’t wash their hands before eating. The organism grows in long filaments when grown at 20-28 deg C, and forms round/ovoid cells when grown at temperatures above 28 deg C. Sexual reproduction (fusion of haploid gametes) occurs in both humans and mice. A cell wall is present, and cells contain nuclei. This microbe could be which of the following? Bacterium Fungus Virus Protozoanarrow_forward
- Which of the following statements regarding protozoa is false?a) Some protozoa lack mitochondria.b) Some protozoa contain chlorophyll.c) Some protozoa are parasitic.d) Malaria is caused by a protozoan.arrow_forwardSome groups of bacteria can go dormant during periods of environmental stress through the formation of _______. A) magnetosomes B) peptidoglycan C) endospores D) piliarrow_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_forward
- A budding artisanal cheesemaker is trying to establish her own starter culture, but there is an archaeal contaminant she finds difficult to get rid of. Instead of producing lactic acid, the Archaea ferments the milk sugars into alcohol, an extremely undesirable effect in cheese making, therefore ruining many of her cheesemaking efforts. She asked microbiologists for help to find a strategy that may hinder the growth or even kill the archaeal cells, but not the lactic acid bacteria (LAB) in rest of her starter culture. The microbiologists come up with different things to try. In the table below are some strategies that she tries. Practice Question Chapter 3 5. Predict what the results are going to be for each strategy she uses. Assume each inhibitor is specific. Assume she doesn't know the species of Archaea that is contaminating her starter culture. Answer yes, no, or maybe where appropriate, explain your answer in the last row of the table below. Will stop cell growth of Archaea Will…arrow_forwardThese structures allow bacteria to have reserve deposits of lipids or gasses. O a) inclusions Ob) ribosomes Oc) endosporesarrow_forwardIdentify the type of cell and cellularity of each microorganism.arrow_forward
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