Which Statement About the Synthesis of RRNA and TRNA in E

question 70

Multiple Choice

Which statement about the synthesis of rRNA and tRNA in E. coli is TRUE?

• A) Both rRNA and some tRNAs are part of the same primary transcript.
• B) Each rRNA sequence (16S, 23S, 5S) is transcribed as a separate primary transcript.
• C) Primary tRNA transcripts undergo methylation, but rRNA sequences are not methylated.
• D) The tRNA sequences all lie at the 3'end of the rRNA transcripts.
• E) There is a single copy of the rRNA genes.

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Definitions:

Lithium Carbonate

A chemical compound used primarily in the treatment of bipolar disorder and mood instability by moderating the neurotransmitters in the brain.

Manic Episode

A period of abnormally elevated, expansive, or irritable mood and increased energy or activity lasting at least one week, characteristic of bipolar disorder.

MAOIs

Short for Monoamine Oxidase Inhibitors, a class of antidepressant drugs that work by inhibiting the activity of the monoamine oxidase enzyme, thus increasing levels of certain neurotransmitters in the brain.

Tricyclics

A class of antidepressant medications used to treat depressive disorders by affecting neurotransmitter levels in the brain.