Which one of the following properties of water is primarily responsible for the ability of trees to draw water up from the roots to the leaves?
A. polarity
B. density
C. solvent capability
D. high surface tension
E. pH neutrality
Answer: D
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One of the limiting factors in engineering plants for nitrogen fixation is to prevent the binding of ________ to the enzyme nitrogenase and the subsequent inhibition of the enzyme.
A. calcium B. bacteria C. oxygen D. phosphorus E. cell membranes
In the reactions of glycolysis, pyruvate oxidation, and the citric acid cycle, chemical energy is transferred to the bonds in:
a. ATP b. All of these choices are correct. c. fats d. electron carriers e. c and d f. a and d
How 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.
Bile
a. has no effect on digestion. b. helps in the digestion of fats. c. helps in the digestion of carbohydrates. d. helps in the digestion of proteins. e. helps in the digestion of nucleic acids