Drugs that are more effective when taken together are called
A. energetic.
B. antagonistic.
C. subtractive.
D. synergistic.
D
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The nitrogenous base that is only found in DNA and not in RNA is:
A. cytosine. B. uracil. C. adenine. D. thymine. E. guanine.
The surface area of the small intestine is dramatically increased due to the presence of _________ on the luminal surface.
A. villi and microvilli B. lacteals C. capillaries D. hydrolytic enzymes E. smooth muscle
The narrower and more tubular shape of Delphinium nudicaule flowers, which mature at an earlier stage of
development than Delphinium decorum flowers, is the product of ____.
a. allometric growth b. exaptation c. paedomorphosis d. disjunct vicariance
e. continuous vicarianceHow are open reading frames or exons predicted from genomic sequence?
A) If the open reading frame is at least 10 sense codons long, it is considered an exon. B) If the sequence is absent from mRNA, it is considered an exon. C) If there is a splice donor and accept or site at the ends of the open reading frame, it is considered an exon. D) If an open reading frame is longer than 21 sense codons, it is predicted to be an exon. E) If an enhancer and promoter sequence are present, the downstream sequence is considered an exon.