Which of the following may characterize monosaccharides?
a. An amino group
b. Carbon and hydrogen 1:2 ratio
c. A backbone of eight carbon atoms
d. One carbonyl group
e. The presence of glycerol and fatty acids
ANSWER: d
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A) echidna B) kangaroo C) whale D) zebra
Structural features that serve the same function in completely unrelated organisms are said to be ________ structures
Fill in the blank(s) with correct word
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A. because it is lost by urination B. because it biodegrades rapidly C. because it is easily infected D. because it enters the body and is absorbed E. to maintain a favorable concentration gradient with the blood