Which of the following is NOT a characteristic that distinguishes mammals from all other vertebrates?
A. mammary glands
B. hair
C. endothermy
D. specialized teeth
E. enlarged skull
C. endothermy
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The structure depicted the accompanying figure shows the _____
A) 1-4 linkage of the ?-glucose monomers of starch B) 1-4 linkage of the ?-glucose monomers of cellulose C) double-helical structure of a DNA molecule D) ?-helix secondary structure of a polypeptide E) ?-pleated sheet secondary structure of a polypeptide
A collection of interacting organisms of different species is a(n)
A. ecosystem. B. community. C. population. D. habitat.
__________cells function when dead
A. Parenchyma B. Sclerenchyma C. Collenchyma D. Phloem
"Runs" are bacterial movements that come from rotating a flagellum_________.
a. clockwise b. counter-clockwise c. up and down d. in and out