Which statement is false concerning the lactose
operon?
a. It contains a set of operators.
b. It contains three structural genes that
manufacture lactose-metabolizing enzymes.
c. It contains a single promoter.
d. It contains a single operator.
e. The promoter lies between two operators.
Answer: d
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Indicate whether the statement is true or false.
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a. Helicobacter pylori b. Staphylococcus aureus c. Streptococcus pyogenes d. Escherichia coli e. Micrococcus luteus
Which of the following describes flash pasteurization?
A) heating at 63°C for 30 minutes B) heating at 72°C for 15 seconds C) heating at 72°C for 15 minutes D) heating at 134°C for one second E) passing liquid through steam at 140°C
Which disease has been eliminated through the use of vaccines?
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