Place the following in order by level of resistance with highest resistance first.
A) prions, endospores, protozoan cysts, fungal spores
B) prions, protozoan cysts, fungal spores, naked viruses
C) endospores, fungal spores, hyphae, prions
D) bacterial vegetative cells, prions, naked viruses, protozoan cysts
Ans: A) prions, endospores, protozoan cysts, fungal spores
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Membrane-enclosed organelles, such as nuclei, lysosomes, endoplasmic reticulum, mitochondria, and chloroplasts,
A) form specialized compartments within eukaryotic cells for specific functions to occur. B) increase the structural complexity of eukaryotic cells. C) help large eukaryotic cells overcome the limitations of diffusion imposed by their large cell size. D) increase structural complexity, help eukaryotes overcome diffusion limitation due to their size, and form specialized environments for specific functions to occur.
The scientist who developed a system of identifying the variety of strains of streptococci was
A. Hans Zimmer. B. Donald Sutherland. C. O. T. Avery. D. Rebecca Lancefield.
Molecular data confirm that cnidarians branched off from the rest of animals before ____________ evolved.
A. echinoderms B. Porifera C. mollusks D. bilaterial symmetry E. arthropods
A significant event influencing the rapid
evolution of plants on land after their initial appearance was the a. increase of atmospheric oxygen. b. reduction of ultraviolet radiation penetration through the atmosphere. c. stabilization of global climates. d. increase in soil nutrients. e. merging of land masses