In woody plants, the root epidermis is replaced by periderm
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Endospores represent a challenge to the fields of industrial and medical microbiology because
A. endospores are significantly smaller than vegetative cells. B. endospores are resistant to harsh environments, thus allowing survival of endospore-forming organisms under conditions in which non-endospore-forming cells would not survive, and endospore-forming organisms are often dangerous pathogens. C. they are resistant to harsh environments, thus allowing survival of endospore-forming organisms under conditions in which non-endospore-forming cells would not survive. D. endospore-forming organisms are often dangerous pathogens.
The stronger the stimulus, the more powerful the action potential
Indicate whether the statement is true or false
Taxol, a secondary metabolite from the bark of the Pacific yew tree, is used as a treatment for
A. high blood pressure. B. breast cancer. C. diabetes. D. headaches. E. indigestion.
Imagine you start a population of 1 million bacteria from a single bacterial cell. Now imagine that a population this large is started from a male and female housefly. How would these two populations differ?
A) The cells of the bacterial population would be larger on average than the cells that make up the houseflies. B) The cells of the bacterial population would differ genetically from each other much more than would individuals of the housefly population. C) No cells of the housefly population would ever divide by meiosis, but some cells of the bacterial population would divide by meiosis. D) Individuals of the housefly population would differ genetically from each other much more than would cells of the bacterial population. E) No cells of the bacterial population would ever divide by binary fission, but some cells of the housefly population would divide by binary fission.