Which of the following is a major cause of health-care-associated infections in the United States?
A. Streptococcus pneumoniae
B. Streptococcus pyogenes
C. Staphylcoccus aureus
D. Alpha hemolytic streptococci
Answer: C
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Which of the following is true of an asymmetric carbon atom?
A) Only amino acids have asymmetric carbon atoms. B) A carbon with hydrogens attached at two locations is usually asymmetric. C) Methane has an asymmetric carbon. D) Asymmetric carbon atoms create stereoisomers. E) Molecules may have only one asymmetric carbon atom.
________ arise out of deep water and have a lagoon in the center of it
a. Barrier reefs b. Atolls c. Patch reefs d. Fringing reefs
The ability of predators to eat and digest prey determines the number of prey captured as is shown in ____
a. type I response only b. type II response only c. type III response only d. types I and II only e. types I, II and III
The outermost cell layer of herbaceous stems is the:a
bark. b. cortex. c. endodermis. d. epidermis. e. periderm.