During transcription, at the point where the DNA strand being copied has an adenine, a(n) _______________ is added to the mRNA.
A) adenine
B) thymine
C) cytosine
D) uracil
E) tRNA
D) uracil
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Gene regulation in both prokaryotes and eukaryotes ____
a. involves significant chromatin remodeling b. requires transcription and translation to occur in separate cellular compartments c. produces differentiated cells d. involves transcriptional control e. involves alternative splicing
The cohesion-tension theory explains that water is moved upward in plants by means of ________
a. all of the choices b. hydrolysis of ATP fueling active transport c. positive pressure pushing from engorged roots d. tension from transpiration
What occurs as a result in a drop in the level of a hormone?
Are transformation and transduction the same process?
A. Yes; they both involve the acquisition of viral genes. B. No; although both involve gene transfer the sources of the genetic material differ. C. Yes; both processes transfer specific gene products to a specific bacterium. D. No; only transformation passes on genes for pathogenicity.