The science of describing, naming, and classifying extant and extinct organisms is
A. evolution.
B. phylogeny.
C. taxonomy.
D. nomenclature.
E. biology.
C. taxonomy.
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The hallmark of multicellular organisms is their ability to
A. grow and divide rapidly. B. adjust quickly to outside environment. C. maintain homeostasis. D. quickly synthesize amount and type of enzymes according to available nutrients. E. respond by gene action to oxygen availability.
According to the threshold model, for a family in which a disorder occurs, the risk of the disorder
decreases as relatedness decreases. Indicate whether the statement is true or false.
What tool or technique used by Ivanowski and Beijerinck while studying diseased tobacco plants enabled them to determine that the disease was caused by an agent significantly smaller than bacteria?
A. transmission electron microscopy that allowed them to view the tobacco mosaic virus B. porcelain filters that trapped bacteria but allowed passage of the virus C. cell culture that enabled cultivation of the virus D. scanning electron microscopy that enabled them to view the virus the tobacco mosaic virus
An antimicrobial is described as preventing alanine-alanine bridge formation. This means it
A. prevents folic acid synthesis. B. interferes with cytoplasmic membrane synthesis. C. blocks glycocalyx synthesis. D. interferes with protein synthesis. E. prevents cell wall synthesis in bacteria.