The largest viruses known are the ________.
A. adenoviruses
B. mimiviruses
C. hepadnaviruses
D. herpesviruses
Answer: B
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The control in an experiment
a. makes the experiment valid. b. is an additional replicate for statistical purposes. c. reduces the experimental errors. d. minimizes experimental inaccuracy. e. is identical to the experimental group, but eliminates the characteristic or treatment being tested.
Factors such as behavioral, temporal, or ecological isolation mechanisms that prevent two closely related sympatric populations from interbreeding can be grouped together and classified as ________
A) prezygotic isolating mechanisms B) postzygotic isolating mechanisms C) polyploidy hybrid speciation D) adaptive radiation
Which of the following represents energy flow in a grazing food web?
A. Producers ? detritivores ? decomposers B. Producers ? decomposers ? detritivores C. Producers ? herbivores ? decomposers ? carnivores D. Producers ? herbivores ? carnivores ? decomposers E. Producers ? herbivores ? detritivores ? carnivores
The term used to describe bacteria that have a spherical shape is ________.
A. coccus B. bacillus C. vibrio D. coccobacillus