Most monocots have numerous ____ roots
arising from the stem.
a. adventitious
b. primary
c. epidermal
d. secondary
e. tap
A
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a. true b. false
________ triggers the formation of weak-celled abscission layers in leaves and fruits, allowing them to drop off at appropriate times during the year
A) Gibberellin B) Cytokinin C) Auxin D) Abscisic acid E) Ethylene
The portion of the DNA molecule that is translated is composed of ______________.
A. introns B. anticodons C. exons D. transcriptions E. exons and transcriptions
In step 2 of the citric acid cycle, the enzyme aconitase generates isocitrate from citrate. Which of the following statements about this reaction is true?
(a) There is a substantial free-energy difference between the reactants and products of this reaction. (b) The unbonded electrons from hydroxide ions provide energy for this reaction. (c) The aconitase enzyme functions as a mutase in this reaction. (d) The reaction sequence first generates one molecule of water and then consumes one molecule of water.