A common food intoxication is caused by enterotoxin-producing strains of
A. Staphylococcus saprophyticus.
B. Staphylococcus epidermidis.
C. Streptococcus pyogenes.
D. Staphylococcus aureus.
E. Streptococcus agalactiae.
Answer: D
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If a pathogen penetrates nonspecific physical and chemical surface barriers, it breaks through the ________
A) first line of defense B) second line of defense C) third line of defense D) first and second lines of defense
The Rb gene is located at 13q14. This locus is on
A. the long arm of chromosome 14 B. the long arm of chromosome 13 C. the short arm of chromosome 14 D. the short arm of chromosome 13
The molecule below is a(n)
A. amino acid.
B. carbohydrate.
C. lipid.
D. nucleic acid.
Slime molds are classified with protozoa in part because they have (flagella/pseudopods/shells)
What will be an ideal response?