Triclosan, a common ingredient in antimicrobial hand soaps available to consumers, has recently been banned by the FDA (Food and Drug Administration). All of the following are concerns regarding the use of triclosan, except
A. Wide spread regular use of triclosan could interfere with the maintenance of healthy normal microbiota.
B. These are all concerns that have been expressed about triclosan use. There are no exceptions here.
C. There are concerns that triclosan may be a hormone disruptor.
D. Wide spread use of triclosan may favor the survival and growth and of highly resistant bacteria.
E. Scientific evidence does not demonstrate that triclosan-supplemented soaps are any more effective than plain soap and water for hand hygiene.
Answer: B
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Examine Figure 48.2 in your text. According to this figure, __________ are the top two energy consuming countries in the world, whereas __________ are the bottom two
A. Canada and the United States; Bangladesh and Kenya B. Kuwait and the United Arab Emirates; Mozambique and Sierra Leone C. Bangladesh and Kenya; the United States and Canada D. Mozambique and Malawi; Australia and the United States E. None of the above.
In the ZW system of sex determination (as in birds), a male is _____________ while a female is ______________
A. ZZ : ZW B. ZW : ZZ C. Z0 : ZW D. Z : ZW
Phenotypic similarity that evolved independently in different lineages is called ____
a. cladogenesis b. anagenesis c. embryogenesis d. homology e. homoplasy
All enzymes are which type of organic molecule?
a. lipids b. minerals c. carbohydrates d. vitamins e. proteins