The lipopolysaccharides are associated with the ____ membrane of Gram- ____ bacteria
a. outer; positive
b. outer; negative
c. plasma; positive
d. plasma; negative
e. plasma; positive and negative
ANSWER: b
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The process whereby genetic exchange occurs by way of viruses carrying genes from one microbe to another is known as:
A. conjugation B. transduction C. transformation D. transubstantiation E. interchange
Because all commercially produced energy has some kind of negative environmental impact, it is a good idea to
simply use ____.
a. wind energy b. solar energy c. less energy d. incandescent lightbulbs e. less water
Angie wants to go with her boyfriend to a bar and drink some beer, but she does not want to become intoxicated because she needs to drive them both home after 2 hours. She weighs 120 pounds. What advice can you give her based on the information in the
textbook? What will be an ideal response?
During which step of water purification does water moves through sand beds and activated charcoal?
A. Storage B. Sedimentation C. Aeration and settling D. Chlorination E. Filtration