Which group of drugs is effective against M. pneumoniae infections?
a. Lactams
b. Sulfonamides
c. Cephalosporins
d. Fluoroquinolones
D
Because of the lack of a cell wall, M. pneumoniae are innately resistant to all lactam antibiotics. In addition, they are resistant to sulfonamides, trimethoprim, and rifampin. Susceptibility patterns vary by species to macrolides and lincosamides. M. pneumoniae is usually susceptible to macrolides, tetracycline, ketolides, and fluoroquinolones.
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Your professor asks you to explain the difference between a tendon and a ligament. How do you answer?
A. Tendons secure muscles to other muscles and ligaments secure bones to other bones. B. Tendons and ligaments have the same function but are found in different areas of the body. C. Tendons secure muscles to bones and ligaments secure muscles to other muscles. D. Tendons are just enlarged ligaments. E. Tendons secure muscles to bones and ligaments secure bones to other bones.
The primary function of erythrocytes is to participate in immune reactions
Indicate whether the statement is true or false.
Edward Jenner injected individuals with ____ lesions to protect them from ____
a. chickenpox; smallpox b. smallpox; chickenpox c. smallpox; cowpox d. cowpox; smallpox e. cowpox; chickenpox
Which of the following is not true about Methylococcus and Methylomonas?
A. Most species are capable of forming cysts. B. They are strict anaerobes. C. They contain complex arrays of intracellular membranes when using methane. D. All of the choices are correct.