Foundations in Microbiology
Foundations in Microbiology
9th Edition
ISBN: 9780073522609
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Chapter 4.L2, Problem 1CT

Using clay, demonstrate how cocci can divide in several planes and show the outcome of this division. Show how the arrangements of bacilli occur, including palisades.

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Summary Introduction

Introduction:

Cocci show a variety of arrangement and can also be categorized on that basis. It is mainly influenced by the pattern of division and how cells remain attached even after that.

Explanation of Solution

Bacterial cells can be classified on the basis of their arrangement, or grouping pattern. A wide variety of arrangements is seen in cocci. This is influenced by the division pattern and the attachment properties of the cell. The cells can appear as single, in pairs (diplococci), in tetrads (groups of four), irregular clusters (staphylococci and micrococci), in chains (streptococci), or in complex cubical packets (sarcina). These arrangements when coccus is divided along single plane, perpendicular planes, or in several intersecting planes.

Foundations in Microbiology, Chapter 4.L2, Problem 1CT , additional homework tip  1 Foundations in Microbiology, Chapter 4.L2, Problem 1CT , additional homework tip  2 Foundations in Microbiology, Chapter 4.L2, Problem 1CT , additional homework tip  3

Bacilli do not exhibit wide variety in arrangement as they divide along the transverse plane. So they can occur as single cell or in pairs with their ends attached (diplobacilli), or as chains of several cells (streptobacilli). Palisade arrangement is displayed only by corynebacterial, eherre the cells remain partially attached by a small hinge region at the end. These cells tend to snap back over each other too form rows of cells arranged side by side.

Foundations in Microbiology, Chapter 4.L2, Problem 1CT , additional homework tip  4
Conclusion

Hence, on the basis of division pattern, different types of cocci arrangements are obtained and this is used as a criterion to categorize bacterial cells.

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Chapter 4 Solutions

Foundations in Microbiology

Ch. 4.2 - What other microbial groups besides bacteria have...Ch. 4.2 - Prob. 4CYPCh. 4.2 - How does the flagellum dictate the behavior of a...Ch. 4.2 - Differentiate between the structure and functions...Ch. 4.2 - Prob. 7CYPCh. 4.2 - Prob. 8CYPCh. 4.2 - Prob. 9CYPCh. 4.2 - Explain how the bacterial glycocalyx and certain...Ch. 4.3 - Prob. 9ELOCh. 4.3 - Outline the structure and functions of cell walls,...Ch. 4.3 - Contrast the major structure of gram-positive and...Ch. 4.3 - Prob. 12ELOCh. 4.3 - Relate the characteristics of other types of cell...Ch. 4.3 - Prob. 14ELOCh. 4.3 - Prob. 11CYPCh. 4.3 - Prob. 12CYPCh. 4.3 - Prob. 13CYPCh. 4.3 - How does the precise structure of the cell walls...Ch. 4.3 - Prob. 15CYPCh. 4.3 - Prob. 16CYPCh. 4.3 - Describe the medical impact of the cell walls of...Ch. 4.3 - Prob. 18CYPCh. 4.3 - Prob. 19CYPCh. 4.4 - Prob. 15ELOCh. 4.4 - Prob. 16ELOCh. 4.4 - Characterize the bacterial ribosomes and...Ch. 4.4 - Prob. 18ELOCh. 4.4 - Prob. 19ELOCh. 4.4 - Discuss the resistance and significance of...Ch. 4.4 - Prob. 20CYPCh. 4.4 - What is unique about the structure of bacterial...Ch. 4.4 - Prob. 22CYPCh. 4.4 - Prob. 23CYPCh. 4.4 - Describe the way endospores are formed, their...Ch. 4.4 - Prob. 25CYPCh. 4.4 - Why are spores so difficult to destroy?Ch. 4.5 - Describe the shapes of bacteria and their possible...Ch. 4.5 - Prob. 22ELOCh. 4.5 - Outline the size ranges among bacteria and in...Ch. 4.5 - Prob. 27CYPCh. 4.5 - Prob. 28CYPCh. 4.5 - What are vibrios and coccobacilli?Ch. 4.5 - Prob. 30CYPCh. 4.5 - Prob. 31CYPCh. 4.5 - Prob. 32CYPCh. 4.6 - Prob. 24ELOCh. 4.6 - Prob. 25ELOCh. 4.6 - Outline a basic system of bacterial taxonomy.Ch. 4.6 - Explain the species and subspecies levels for...Ch. 4.6 - Prob. 33CYPCh. 4.6 - Prob. 34CYPCh. 4.6 - Prob. 35CYPCh. 4.7 - Differentiate various groups of photosynthetic...Ch. 4.7 - Characterize the types of obligate intracellular...Ch. 4.7 - Prob. 30ELOCh. 4.7 - Prob. 31ELOCh. 4.7 - Prob. 32ELOCh. 4.7 - Prob. 36CYPCh. 4.7 - Name two main groups of obligate intracellular...Ch. 4.7 - Explain the characteristics of archaea that...Ch. 4.7 - Prob. 39CYPCh. 4.7 - Describe the three major archaeal lifestyles and...Ch. 4.L1 - Prob. 1MCQCh. 4.L1 - Viruses are not considered living things because...Ch. 4.L1 - Prob. 3MCQCh. 4.L1 - Prob. 4MCQCh. 4.L1 - Pili are appendages in _________ bacteria that...Ch. 4.L1 - Prob. 6MCQCh. 4.L1 - Which of the following is a primary bacterial cell...Ch. 4.L1 - Which of the following is present in both...Ch. 4.L1 - Metachromatic granules are concentrated ________...Ch. 4.L1 - Prob. 10MCQCh. 4.L1 - Prob. 11MCQCh. 4.L1 - Prob. 12MCQCh. 4.L1 - Prob. 13MCQCh. 4.L1 - Prob. 14MCQCh. 4.L1 - Prob. 15MCQCh. 4.L1 - To which taxonomic group do cyanobacteria belong?...Ch. 4.L1 - Prob. 17MCQCh. 4.L1 - The first living cells on earth would most likely...Ch. 4.L1 - Prob. 1CSRCh. 4.L1 - Prob. 2CSRCh. 4.L1 - What is a biofilm, and how did it form on the...Ch. 4.L1 - Label the parts on the bacterial cell featured...Ch. 4.L1 - Discuss the collection of properties that are used...Ch. 4.L1 - Describe the basic process of biofilm formation.Ch. 4.L1 - Prob. 4WCCh. 4.L1 - Prob. 5WCCh. 4.L2 - Using clay, demonstrate how cocci can divide in...Ch. 4.L2 - Prob. 2CTCh. 4.L2 - Prob. 3CTCh. 4.L2 - Prob. 4CTCh. 4.L2 - a. Name a bacterial group that uses chlorophyll to...Ch. 4.L2 - Propose a hypothesis to explain how bacteria and...Ch. 4.L2 - Prob. 7CTCh. 4.L2 - Prob. 8CTCh. 4.L2 - Describe the shapes and arrangements of bacteria...Ch. 4.L2 - Prob. 1VCCh. 4.L2 - What kinds of cells are shown here? Explain what...
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