The bark from _______ tree species was the original source of salicylic acid, the pain-relieving substance in aspirin.

A. Willow
B. Cinchona
C. Kola
D. Maple
E. Yew


Ans: A. Willow

Biology & Microbiology

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Which ponds contained only killifish as predators?

a. primero and quinto b. segundo, tercero, and sexto c. tercero and quinto d. quarto, sexto, and septimo e. none of the above (all ponds containing killifish also contained cichlids)

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Filopodia that are supported by microtubules are known as ________.

A. axopodia B. micropodia C. reticulopodia D. lophopodia E. tubulopodia

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Different members of a bacterial species can be categorized based on their susceptibility to lysis by specific bacteriophages.

A) True B) False

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