Polycistronic transcription units are common in

A) Archaea.
B) Bacteria.
C) Eukarya.
D) both Archaea and Bacteria.


Answer: D

Biology & Microbiology

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The process of adding hydrogen to N2, creating NH3 and eventually NH4+, and which requires a substantial input of ATP, is called ____.

a. nitrification b. ammonification c. nitrogen cycling d. nitrogen fixation e. nitrogen assimilation

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A type III survivorship curve is characteristic of all

of the following EXCEPT a. flies. b. primates. c. frogs. d. sea stars. e. fish.

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Between 30°-60° north latitude, wind currents typically blow from

A) west to east and are deflected toward the left. B) east to west and are deflected toward the left. C) west to east and are deflected toward the right. D) east to west and are deflected toward the right.

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List five organ systems in animals. Identify the main organ in each system and describe its function for the organism

What will be an ideal response?

Biology & Microbiology