Sunday, February 7, 2010

Though plants, fungi, and prokaryotes all ahve cell walls, we classify them under different taxonomic units.?

which observation below comes closest to explaining the basis for placing these organisms in different taxa?


a. some closely resemble animals, which lack cell walls


b. their cell walls are constructed form very different biochemicals


c. some have cell walls only for support


d. some have cell walls only for protection from herbivores


e. some have cell wasll only to control osmotic balanceThough plants, fungi, and prokaryotes all ahve cell walls, we classify them under different taxonomic units.?
B


A. Plants cell walls are made of complex carbohydrates


B. Fungi cell walls are made form proteins (chitin)


C. Prokaryotes cell walls are made form peptidoglycan (also called murein), which is made for sugars, and protein bases(amino acids)Though plants, fungi, and prokaryotes all ahve cell walls, we classify them under different taxonomic units.?
actually, I'd say that it's b


because b is more correct.


animals and plants have a common ancestor with archea.


so plant cell-walls are wierd compared to bacterial ones.
a. some closely resemble animals, which lack cell walls
b is the correct answer.





The cell walls of plants, fungi and bacteria are all chemically different.

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