The four nitrogen bases found in RNA are
A. adenine, thymine, guanine, and uracil.
B. adenine, cytosine, guanine, and uracil.
C. adenine, thymine, cytosine, and uracil.
D. thymine, cytosine, guanine, and uracil.
E. None of the answer choices is correct.
B. adenine, cytosine, guanine, and uracil.
You might also like to view...
Chloroplasts are composed of membranous sacs called ________ that carry chlorophyll. Surrounding these sacs is a ground substance called ________.
A. grana; stroma B. cristae; stroma C. thylakoid; matrix D. cristae; matrix E. thylakoids; stroma
What is one drawbacks to using pheromones for communication?
a. They are effective only at night. b. They can only affect unrelated species. c. They are toxic to unrelated species. d. They require little energy for production. e. They transmit information slowly.
Lysogeny can result in all of the following EXCEPT
A) immunity to reinfection by the same phage. B) acquisition of new characteristics by the host cell. C) immunity to reinfection by any phage. D) specialized transduction. E) phage conversion.
Which of the following statements regarding metabolism is FALSE?
A) Heat may be released in both anabolic and catabolic reactions. B) ATP is formed in catabolic reactions. C) ADP is formed in anabolic reactions. D) Anabolic reactions are degradative.