BIOD 3700 exam 4_micro
ch13
1. Infection occurs when
A. Contaminants are present on the skin
B. A person swallows microbes in/on food
C. A person inhales microbes in the air
D. Pathogens enter and multiply in body tissues
E. All of the choices are correct
2. The term infection refers to
A. Microorganisms colonizing the body
B. Contact with microorganisms
C. Contact with pathogens
D. Pathogens penetrating host defenses
E. None of the choices are correct
3. Which is not terminology used for resident biota?
A. Pathogenic biota
B. Normal biota
C. Indigenous biota
D. Normal microbiota
E. Commensals
4. Endogenous infectious agents arise from microbes that are
A. In food
B. The patient's own normal biota
C. On fomites
D. In the air
E. Transmitted form one person to another
5. The human body typically begins to be colonized by its normal biota
A. Before birth, in utero
B. During and immediately after birth
C. When a child first goes to school
D. When an infant gets its first infectious disease
E. During puberty
6. Resident biota are found in/on the
A. Skin
B. Mouth
C. Nasal passages
D. Large intestine
E. All of the choices are correct
7. Normal biota includes each of the following except
A. Bacteria
B. Fungi
C. Protozoans
D. Viruses
E. All of the choices are correct
,BIOD 3700 exam 4_micro
8. Each of the following are inoculation of normal biota to a newborn except
A. The birth process through the birth canal
B. Bottle feeding
C. Breast feeding
D. Contact with hospital staff
E. All of the choices are correct
9. Which of the following is not true of endogenous retroviruses?
A. ERV's are part of the normal biota
B. ERV's are vital for placental development in sheep
C. ERV's cause disease
D. ERV's fight off pathogenic viruses
E. All of these are true
10. The affect of "good" microbes against invading microbes is called
A. Microbial antagonism
B. Endogenous infection
C. Infectious disease
D. Axenic
E. Gnotobiotism
11. All of the following genera are considered resident biota of skin sites except
A. Escherichia
B. Staphylococcus
C. Corynebacterium
D. Micrococcus
E. Candida
12. Resident biota of the gastrointestinal tract include
A. Streptococcus
B. Bacteroides
C. Lactobacillus
D. Haemophilus
E. All of the choices are correct
13. Which genus is resident biota of the mouth, large intestine and from puberty to
menopause, the vagina?
A. Lactobacillus
B. Treponema
C. Haemophilus
D. Escherichia
E. Clostridium
14. Opportunistic pathogens
A. Cause disease in every individual
B. Cause disease in compromised individuals
C. Are always pathogens
D. Have well developed virulence factors
E. None of the choices are correct
,BIOD 3700 exam 4_micro
15. Pathogenic microbes that cause disease in healthy people are called
A. Opportunistic pathogens
B. Normal biota
C. Indigenous biota
D. True pathogens
E. Micropathogens
16. Which of the following is not a factor that weakens host defenses against infections?
A. Genetic defects in immunity
B. Physical and mental stress
C. Strong, healthy body
D. Chemotherapy
E. Old age
17. Which genus is the most common resident biota of mouth surfaces?
A. Lactobacillus
B. Streptococcus
C. Haemophilus
D. Escherichia
E. Mycobacterium
18. STORCH is an acronym that represents the most common
A. Genera of resident biota
B. Sexually transmitted diseases
C. Portals of entry
D. Vectors
E. Infections of the fetus and neonate
19. The greatest number of pathogens enter the body through the
A. Respiratory system
B. Gastrointestinal system
C. Urinary system
D. Genital system
E. Skin
20. An infectious agent that originates from outside the body is called
A. Exogenous
B. An exotoxin
C. An enterotoxin
D. Endogenous
E. Axenic
21. An infectious agent already existing on or in the body are called
A. Exogenous
B. An exotoxin
C. An enterotoxin
D. Endogenous
E. Axenic
, BIOD 3700 exam 4_micro
22. The minimum amount of microbes in the inoculating dose is the
A. Virulence factor
B. Indigenous biota
C. Infectious dose
D. Endotoxin
E. Minimal dose
23. Which of the following is not a method of adhesion?
A. Fimbriae
B. Surface proteins
C. Specialized receptors
D. Adhesive slime or capsules
E. Cilia
24. Once a microbe has entered a host, what process performed by certain white blood cells
will attempt to destroy the microbes?
A. Phagocytosis
B. Adhesion
C. Encapsulation
D. Margination
E. Exocytosis
25. Which of the following is not an anti-phagocytic factor?
A. Secretion of slime
B. Production of leukocidins
C. Adhering to the host
D. Secretion of a capsule
E. Ability to survive intracellularly
26. Virulence factors include all the following except
A. Capsules
B. Ribosomes
C. Exoenzymes
D. Endotoxin
E. Exotoxin
27. Microbial hyaluronidase, coagulase and streptokinase are examples of
A. Adhesive factors
B. Exotoxins
C. Hemolysins
D. Antiphagocytic factors
E. Exoenzymes
28. Exotoxins are
A. Proteins
B. Only released after a cell is damaged or lysed
C. Antiphagocytic factors
D. Secretions that always target nervous tissue
E. Lipopolysaccharides
ch13
1. Infection occurs when
A. Contaminants are present on the skin
B. A person swallows microbes in/on food
C. A person inhales microbes in the air
D. Pathogens enter and multiply in body tissues
E. All of the choices are correct
2. The term infection refers to
A. Microorganisms colonizing the body
B. Contact with microorganisms
C. Contact with pathogens
D. Pathogens penetrating host defenses
E. None of the choices are correct
3. Which is not terminology used for resident biota?
A. Pathogenic biota
B. Normal biota
C. Indigenous biota
D. Normal microbiota
E. Commensals
4. Endogenous infectious agents arise from microbes that are
A. In food
B. The patient's own normal biota
C. On fomites
D. In the air
E. Transmitted form one person to another
5. The human body typically begins to be colonized by its normal biota
A. Before birth, in utero
B. During and immediately after birth
C. When a child first goes to school
D. When an infant gets its first infectious disease
E. During puberty
6. Resident biota are found in/on the
A. Skin
B. Mouth
C. Nasal passages
D. Large intestine
E. All of the choices are correct
7. Normal biota includes each of the following except
A. Bacteria
B. Fungi
C. Protozoans
D. Viruses
E. All of the choices are correct
,BIOD 3700 exam 4_micro
8. Each of the following are inoculation of normal biota to a newborn except
A. The birth process through the birth canal
B. Bottle feeding
C. Breast feeding
D. Contact with hospital staff
E. All of the choices are correct
9. Which of the following is not true of endogenous retroviruses?
A. ERV's are part of the normal biota
B. ERV's are vital for placental development in sheep
C. ERV's cause disease
D. ERV's fight off pathogenic viruses
E. All of these are true
10. The affect of "good" microbes against invading microbes is called
A. Microbial antagonism
B. Endogenous infection
C. Infectious disease
D. Axenic
E. Gnotobiotism
11. All of the following genera are considered resident biota of skin sites except
A. Escherichia
B. Staphylococcus
C. Corynebacterium
D. Micrococcus
E. Candida
12. Resident biota of the gastrointestinal tract include
A. Streptococcus
B. Bacteroides
C. Lactobacillus
D. Haemophilus
E. All of the choices are correct
13. Which genus is resident biota of the mouth, large intestine and from puberty to
menopause, the vagina?
A. Lactobacillus
B. Treponema
C. Haemophilus
D. Escherichia
E. Clostridium
14. Opportunistic pathogens
A. Cause disease in every individual
B. Cause disease in compromised individuals
C. Are always pathogens
D. Have well developed virulence factors
E. None of the choices are correct
,BIOD 3700 exam 4_micro
15. Pathogenic microbes that cause disease in healthy people are called
A. Opportunistic pathogens
B. Normal biota
C. Indigenous biota
D. True pathogens
E. Micropathogens
16. Which of the following is not a factor that weakens host defenses against infections?
A. Genetic defects in immunity
B. Physical and mental stress
C. Strong, healthy body
D. Chemotherapy
E. Old age
17. Which genus is the most common resident biota of mouth surfaces?
A. Lactobacillus
B. Streptococcus
C. Haemophilus
D. Escherichia
E. Mycobacterium
18. STORCH is an acronym that represents the most common
A. Genera of resident biota
B. Sexually transmitted diseases
C. Portals of entry
D. Vectors
E. Infections of the fetus and neonate
19. The greatest number of pathogens enter the body through the
A. Respiratory system
B. Gastrointestinal system
C. Urinary system
D. Genital system
E. Skin
20. An infectious agent that originates from outside the body is called
A. Exogenous
B. An exotoxin
C. An enterotoxin
D. Endogenous
E. Axenic
21. An infectious agent already existing on or in the body are called
A. Exogenous
B. An exotoxin
C. An enterotoxin
D. Endogenous
E. Axenic
, BIOD 3700 exam 4_micro
22. The minimum amount of microbes in the inoculating dose is the
A. Virulence factor
B. Indigenous biota
C. Infectious dose
D. Endotoxin
E. Minimal dose
23. Which of the following is not a method of adhesion?
A. Fimbriae
B. Surface proteins
C. Specialized receptors
D. Adhesive slime or capsules
E. Cilia
24. Once a microbe has entered a host, what process performed by certain white blood cells
will attempt to destroy the microbes?
A. Phagocytosis
B. Adhesion
C. Encapsulation
D. Margination
E. Exocytosis
25. Which of the following is not an anti-phagocytic factor?
A. Secretion of slime
B. Production of leukocidins
C. Adhering to the host
D. Secretion of a capsule
E. Ability to survive intracellularly
26. Virulence factors include all the following except
A. Capsules
B. Ribosomes
C. Exoenzymes
D. Endotoxin
E. Exotoxin
27. Microbial hyaluronidase, coagulase and streptokinase are examples of
A. Adhesive factors
B. Exotoxins
C. Hemolysins
D. Antiphagocytic factors
E. Exoenzymes
28. Exotoxins are
A. Proteins
B. Only released after a cell is damaged or lysed
C. Antiphagocytic factors
D. Secretions that always target nervous tissue
E. Lipopolysaccharides
