Microwaves do not kill organisms directly but kill by
A. the heat they generate in a product.
B. generating free radicals.
C. generating toxins.
D. creating thymine dimers.
A
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The presence of trans fats in membranes ________ the transition temperature and ________ membrane fluidity.
Fill in the blank(s) with the appropriate word(s).
Enzymes are
A. not needed for catabolic reactions. B. proteins that function as catalysts. C. used up in chemical reactions. D. carbohydrate or protein in composition. E. broken down in reactions that require energy input.
Microbes within glaciers are ________.
A. dormant B. barophilic C. nonexistent D. active
The sharp reduction of the gene pool and the numbers of a population through a severe epidemic is an example of ____.
A. natural selection B. genetic isolation C. the bottleneck effect D. the founder effect E. the wild card effect