Multiple Choice
Which of the following is true of commensal organisms that populate the normal flora?
A) They live harmoniously without harming the person.
B) Unless they are destroyed with an antibiotic,the person develops an infection.
C) The organisms are usually walled off as an abscess.
D) All commensal organisms are confined to the large intestine (bowel) .
Correct Answer:

Verified
Correct Answer:
Verified
Q22: Which group includes single-cell animal-like microbes,such as
Q23: Cocci,bacilli,and curved rods are classified as<br>A)viruses.<br>B)pathogens.<br>C)bacteria.<br>D)parasites.
Q24: Streptococci and staphylococci are<br>A)viruses.<br>B)gram-positive bacteria.<br>C)arthropods.<br>D)parasites.
Q25: An abscess is<br>A)an example of a systemic
Q26: Penicillin exerts its antibiotic effect primarily through
Q28: Which of the following is least descriptive
Q29: The ova of which of these parasitic
Q30: Which "bad air" disease is caused by
Q31: Rickettsiae and chlamydiae are classified as<br>A)viruses.<br>B)bacteria.<br>C)arthropods.<br>D)bacilli.
Q32: A helminth is a(n)<br>A)parasite.<br>B)arthropod.<br>C)worm.<br>D)bacterium.