Transcript Chp.5 Types of Bacteria

Bacteriology
Bacteria Types, Classifications,
Movement and Stages
©2003 Texas Trade and Industrial Education
1
Performance Objective
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Upon completion of this assignment, the
student will be able to identify the structure
and function of bacteria to the satisfaction of
the instructor.
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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Specific Objectives
1.
2.
3.
4.
5.
Define terms associated with the lesson.
Identify types of bacteria.
Explain the classifications of bacteria.
Describe bacterial growth and
reproduction.
Explain the phases of bacteria.
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
3
Terms associated with lesson
A.
Bacteriology
A.
The science that deals with the study of
microorganisms called bacteria.
B. Bacteria
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Minute, one-celled vegetable microorganisms
Found nearly everywhere
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Dust, dirt, refuse, and diseased tissue.
Also know as germs.
Can only be seen through the aid of a microscope
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1500 can cover the head of a pin.
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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Types of Bacteria
Nonpathogenic and Pathogenic
A. Nonpathogenic
1. Helpful or harmless
2. Perform useful functions; decompose refuse and improve
soil fertility
3. Saprophytes are a type of nonpathogenic bacteria that live
on dead matter and do not produce disease
B. Pathogenic
1. Harmful
2. Disease producing
3. Invade plant or animal tissue.
4. Parasites are a type of pathogenic bacteria that require
living matter for growth
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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The Story of Pathogenic
Bacteria
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There once lived a guy called Tyrone Cocci
- He has a round shape
-He likes to hang around singly or in groups
-He is not very active
-He is most comfortable when he is hanging out in the air or
dirt
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
6
Tyrone Cocci’s Wives
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Tyrone Cocci had three wives: Staphylococci, Streptococci, and
Diplococci
-Mrs. Staphylococci; Tyrone Cocci did not like her because of these
reasons;
-She is pus-forming
-She hangs out in bunches or clusters
-She has a lot of abscesses, pustules, and boils
-Mrs. Diplococcic; Tyrone Cocci did not like her because of these
reasons;
-She hangs out in bunches and causes pneumonia
-Mrs. Streptococci; Tyrone Cocci did not like her because of these
reasons;
-She is pus forming
-She hangs out in chains
-She causes infections like strep throat
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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Tyrone Cocci’s Friends
Bobby Bacilli and J.C. Spirilla
-Bobby Bacilli
-He has a short, rod-shape
-He is a very common
-He produces tetanus, influenza, typhoid
fever, tuberculosis, and diphtheria
-He drives a flagella or cilia
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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Tyrone Cocci’s Friends
J.C. Spirilla
-He has a curved, or corkscrew shape
-He hangs out in groups
-He causes general infections such as
syphilis
-He drives a flagella or cilia
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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Bacteria Growth &
Reproduction
A.
B.
Bacteria have an outer cell wall and
internal protoplasm.
Protoplasm is needed for bacteria to
sustain life.
Bacteria make their own food, give off
waste, grow, and reproduce.
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
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Phases of Bacteria
A. Active or vegetative stage
1. Bacteria grow and reproduce.
2. They multiply best in warm, dark, and damp or dirty places
where there is sufficient food.
3. When bacteria grow to their largest, they divide into two
cells
B. Inactive or spore-Forming Stage
1. When conditions are unfavorable, bacteria die or become
inactive.
2. During this stage, some bacteria form tough outer walls
coverings called spherical spores; these walls protect
them from dryness and unsuitable temperatures.
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
11
Summary
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Bacteria are minute, one-celled vegetable
microorganisms
Two types; pathogenic & nonpathogenic
Three classifications
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Cocci,Bacilli, Spirilla
Their life cycle
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active or vegetable
inactive or spore forming
©2003 Texas Trade and Industrial Education
Cosmetology I: Bacteriology
12