题目内容

Which of the following bacteria can produce endotoxin?

A. Clostridium botulinum
Bacillus cereus
C. Escherichia coli O157
D. Staphylococcus aureus

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Organisms that do not require oxygen for growth but grow better in its presence are called

A. facultative anaerobes
B. microaerophiles
C. obligate aerobe
D. obligate anaerobe

The primary toxin associated with invasive Clostridium perfringens infection is

A. neuraminidase
B. alpha toxin
C. hyaluronidase
D. coagulase

A neurotoxin that causes flaccid paralysis is

A. tetanospasmin
B. botulinum toxin
C. α toxin
D. enterotoxin

The most common portal of entry forC. tetani,the cause of tetanus, is the

A. Skin
B. Gastrointestinal tract
C. Respiratory tract
D. Genital tract
E. Nasal tract