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If bacteria are nonmotile, what can be inferred?
Question 3 options:
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Mimimal number of flagella renders their body nonmotile. |
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They lack motility structure to propel their multicellular body. |
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Absence of flagella deprives them function of locomotion. |
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The flagella at one end of their body make them nonmotile. |
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- Answer the following questions: Which cell shapes are observed members of both Bacteria and Archaea? Which are unique to bacteria? Which to archaea? Both bacteria and archaea can have S-layers. How does their use as components of the cell envelope differ? What observations about cannulae and hami suggest that they allow archaeal cells to adhere surfaces, including other cells? List three aspects of archaeal flagella and flagellar motility that are like bacterial flagella and flagellar motility. INCLUDE REFERENCES!How does the shape of a bacteria cell affect the bacteria’s survival in the environment? To answer this question: Calculate the surface-to-volume ratio of a coccus, assuming it is a perfect sphere. Where radius (r) = 0.91 μm. surface-to-volume ratio of a coccus = ________________ Calculate the surface-to-volume ratio of a bacillus, assuming it is a cylinder. Where r = 0.5 μm and height (h) = 4 μm surface-to-volume ratio of a bacillus = _________________________ The values provided for the radius of the coccus and the radius and height for the bacillus will give approximately the same volume for the coccus and the bacillus. However, the surface area will differ. Now compare the surface-to-volume ratio of a coccus to a bacillus calculated with these values. Which has the higher surface area for the same amount of volume? Considering the coccus and bacillus of equal volume from the question above, Which is more likely to survive in a dry environment? Explain your answer.…Which term best describes the morphology of this bacteria? Question 2 options: spiral bacillus diploid flagellate aggregation
- Which of the following would be found inside a bacterial cel? inclusion Onucleiod Ofagela cytoplasm QUESTION 7 Which of the following would be found on the external surface of a bacterial cell? fimbriae chromosome slime layer Oribosome QUESTION 8 Which of the following structures aid in biofim formation? gycocalyx cell wall O fimbriae Oglycocalyx and fimbriae QUESTION 9 Which structure (s) would be produced by bacteria to prevent dessication? Select ALL that apply mycolic acids Oslime layer "capsule ribosomeMicrobiologists 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.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 wall
- 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.Why 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.In the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions: a) Outer cellular covering which includes: Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm. c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…
- Which term best describes the morphology of this bacteria? Question 4 options: bacillus aggregation spiral coccus diploidFigure 22.16 Which of the following statements is true? Gram-positive bacteria have a single cell wall anchored to the cell membrane by lipoteichoic acid. Pori ns allow entry of substances into both Gram-positive and Gram-negative bacteria. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. Gram-negative bacteria have a cell wall made of peptidoglycan, whereas Gram positive bacteria have a cell wall made of lipoteichoic acid.Figure 13.6 Which of the following statements is true? a. Gram-positive bacteria have a single cell wall formed from peptidoglycan. b. Gram-positive bacteria have an outer membrane. c. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. d. Gram-negative bacteria have a cell wall made of peptidoglycan, while Gram-positive bacteria have a cell wall made of phospholipids.
