Question

EXERCISE 8 REVIEW QUESTIONS 1. Complete the following table by providing the proper shape for each of the bacterial species listed. A look at the flowcharts in exercise 39 would be helpful. Species Cellular morphology mear of prepare of the Escherichia coll. Starylaces are prevent Listeria monocytogenes alison gater houn Clostridium perfringens 2. What two staining techniques are appropriate for determining the shape and arrangement of a bacterial species

Answer 1

1.The cellular morphology of the bacteria are as following

Species	Cellular morphology
Escherichia coli	These bacteria are generally rod shaped They measure 2.0×0.25 micrometer in size They weigh about 0.6 to 0.7 micrometer/cube It is a gram negative bacteria
Staphyllococus aureus	These bacteria are circular or round in shape or in a cluster form They are gram positive bacteria They look yellow in foloe on staining
Listeria monocytogenes	These bacteria are rod shaped They belong to gram positive bacteria It measure 0.5 -4 micrometer in diameter and roughly 0.5 to 2 micrometer in length
Clostridium perfringens	These bacteria are rod shape having rounded edges They belong to gram positive bacteria It measures about 3 to 8 micrometer in length and 0.4 to 1.2 micrometer in diameter

2.The major two types of staining techniques used are

• Gram staining
• Acid fast staining