PAHs (polycyclic aromatic hydrocarbons) found in tobacco smoke preferentially bind to regions within the ________ and trigger base substitutions.

A) GAL-4 gene
B) p53 gene
C) DMBA gene
D) homeogenes
E) viral gene


B) p53 gene

Biology & Microbiology

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Precipitation is generally most acidic in which region of the United States?

a. Southeast b. Southwest c. Northwest d. Northeast e. Midwest

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Which statement is correct regarding microbial growth on food at refrigeration temperatures?

A. The absence of light in the refrigerator greatly reduces the growth of most microbial pathogens. B. There is no growth of microbes in food in the refrigerator; the cold temperature kills or inactivates microbial cells. C. Most food does not have enough oxygen content for microorganisms to thrive. D. The growth of microbes in food depends on their optimal growth temperature; some grow slowly and others faster.

Biology & Microbiology

Which structures return blood to the heart?

A) capillaries B) veins C) arteries D) sinoatrial nodes

Biology & Microbiology

Predicting how moving to a just-in-time production plan will affect employee productivity will require what sort of prediction?

A. KPI B. Lag information C. Passive prediction D. Active prediction

Biology & Microbiology