Surfactants are detergents that work as microbicidal agents because they increase the surface tension of cell membranes.
a. true
b. false
Ans: b. false
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All microorganisms require
A) carbon, iron, and sodium. B) phosphorus, aluminum, and sodium. C) calcium, potassium, and magnesium. D) phosphorus, selenium, and sulfur.
True or False: many of the intermediates in the biosynthesis of chlorophyll are themselves capable of absorbing light energy
A. true B. false
An organ consists of two or more:
a. cells b. cell types c. tissues d. functional structures e. fluid types
Crop sunflowers are attacked by many fungal pathogens, such as downy mildew and Sclerotinia, resulting in economic losses of millions of dollars per year. What genes would be best to target for the development of new fungus-killing crop treatments (fungicides)?
A. Genes encoding metabolite proteins that are shared by downy mildew, Sclerotinia, and humans, but absent in sunflower. B. Genes encoding basic development proteins that are shared by downy mildew, Sclerotinia, sunflower, and humans. C. Genes encoding chitin proteins that are shared by downy mildew and Sclerotinia, but absent in sunflower and humans. D. Genes encoding growth proteins that are shared by downy mildew, Sclerotinia, and sunflower, but absent in humans.