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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

What occurs as a result in a drop in the level of a hormone?

Biology & Microbiology

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.

Biology & Microbiology