Bacterial pneumonia in children is most commonly caused by:

a. M. pneumoniae.
b. Chlamydia pneumonia.
c. parainfluenza virus.
d. Staphylococcus aureus.


D
Among previously healthy patients 2 months to 5 years of age, respiratory syncytial virus, human metapneumovirus, parainfluenza, influenza, and adenoviruses are the most common etiologic agents of lower respiratory tract disease. Children suffer less commonly from bacterial pneumo-nia, usually caused by H. influenzae, S. pneumoniae, or S. aureus.

Biology & Microbiology

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In ____ bonds, both atoms exert the same pull on shared electrons.

A. triple covalent B. polar covalent C. double covalent D. nonpolar covalent E. coordinate covalent

Biology & Microbiology

In the 1600s, William Harvey studied reproduction and development. What is the term given to the theory that states that an organism develops from the fertilized egg by a succession of developmental events that lead to an adult?

A) epigenesis B) equational transformation C) transduction D) preformation E) sequential pattern formation

Biology & Microbiology

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is

A. sterilization. B. sanitization. C. antisepsis. D. degermation. E. disinfection.

Biology & Microbiology

The immediate ancestors of plants were:

A. charophyceans B. red algae C. kelp D. cyanobacteria E. dinoflagellates with plastids

Biology & Microbiology