Microbiology: An Introduction (13th Edition)
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 11, Problem 1R

The following outline can be used to identify important bacteria. Fill in a representative genus in the space provided.

  Representative Genus
I. Gram-positive  
A. Endospore-forming rod  
1. Obligate anaerobe (a) ______
2. Not obligate anaerobe (b) ______
 B. Non-endospore-forming  
1. Cells are rods  
a. Produce conidiospores (c) ______
b. Acid-fast (d) ________________
2. Cells are cocci  
a. Lack cytochrome system (e) _______
b. Use aerobic respiration (f) _______
II. Gram-negative  
 A. Cells are helical or curved  
1. Axial filament (g) _______
2. No axial filament (h) _______
B. Cells are rods  
1. Aerobic, nonfermenting (i) _______
2. Facultatively anaerobic (j) _______
III. Lack cell walls (k) _______
IV. Obligate intracellular parasites  
A. Transmitted by ticks (1) _______
B. Reticulate bodies in host cells (m) ______
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

Bacteria of different class and types are differentiated based on its shape, structure, and size.

Explanation of Solution

 Representative Genus
I. Gram-positive 
  1. A.    Endospore forming rod
 
      1. Obligate anaerobes(a) Clostridium
      2. Non obligate anaerobes(b) Bacillus
  1. B.     Non-endospore-forming
 
  1. 1. Cells are rods
 
  1. a. Produce conidiospores
 (c) Streptomyces
  1. b. Acid- fast
(d) Mycobacterium
  1. 2. Cells are cocci
 
  1. a. Lack cytochrome system
 (e) Streptococcus
  1. b. Use aerobic respiration
 (f) Staphylococcus
II. Gram-negative 
  1. A.    Cells are helical or curved
 
       1. Axial filament (g) Treponema
       2. No Axial filament (h) Spirillum
  1. B.     Cells are  rods
 
       1. Anaerobic, nonfermenting (i) Pseudomonas
       2. Facultative anaerobic (j) Escherichia
III. Lack cell walls (k) Mycoplasma
IV. Obligate intracellular parasites 
A. Transmitted by ticks (l) Rickettsia
B. Reticulate bodies in host cells (m) Chlamydia
Conclusion

The representative genus of bacteria was identified based on the different characteristics given.

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