Microbiology: Principles and Explorations
10th Edition
ISBN: 9781119390114
Author: Black
Publisher: WILEY
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Chapter 5, Problem 2.4SC
Compare the cell walls of Gram-positive, Gram-negative, and acid-fast bacteria.
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Describe the difference between Gram(-) and Gram (+) bacteria. Specifically focus on the differences associated with the cell wall and membrane regions.
Differentiate gram-positive and gram-negative bacteria based on their cell wall structure
Describe gram negative and gram positive cells walls.
Chapter 5 Solutions
Microbiology: Principles and Explorations
Ch. 5 - Are viruses prokaryotes? Eukaryotes? Why or why...Ch. 5 - Compare surface-to-volume ratios of prokaryotes...Ch. 5 - Prob. 1.3SCCh. 5 - Prokaryotes lack mitochondria. What structure does...Ch. 5 - Compare peptidoglycan and teichoic acid as to...Ch. 5 - What takes place in the periplasmic space? Which...Ch. 5 - Prob. 2.3SCCh. 5 - Compare the cell walls of Gram-positive,...Ch. 5 - How do bacteria move in chemotaxis? Distinguish...Ch. 5 - Prob. 3.2SC
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- One 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_forwardIn 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…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
- List three differences between gram positive and gram negative bacteria besides the color difference when they are stained.arrow_forwardTabulate the main difference between Gram positive and Gram-negative bacteria.arrow_forwardDescribe the major chemical components in the outermembrane of gram-negative bacteria.arrow_forward
- What characteristic shapes can bacteria assume? Describe the ways in which bacterial cells cluster together.arrow_forwardWhich statement best compares the terms "coccus" and "bacillus" as applied to bacteria? Coccus refers to a round cell; bacillus refers to an elongated one Coccus refers to a gram-positive cell; bacillus refers to a gram-negative cell Coccus refers to a gram-negative cell; bacillus refers to a gram-positive cell Coccus refers to an elongated cell; bacillus refers to a round onearrow_forwardName and describe three major groups of Bacteria.arrow_forward
- You are studying a new bacteria isolated from the soil by identifying the cellular structures that it makes. The presence of which of the following would indicate that your organism must be a Gram-positive bacterium? It has a cell wall with teichoic acids It has a polyhydroxyalkanoate storage granule It has an outer membrane with LPS It has a flagellaarrow_forwardDescribe the composition of bacterial cell walls.arrow_forwardWhy do low concentrations of alcohol inhibit Gram-negative bacteria more than Gram-positive bacteria? Explain how the alcohol interacts with: 1) Gram-negative cell wall structures 2) Gram-positive cell wall structuresarrow_forward
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