Why Is It That the Primary Transcript in Prokaryotes Can

question 62

Multiple Choice

Why is it that the primary transcript in prokaryotes can immediately serve as mRNA while in eukaryotes it undergoes elaborate multistep processing?

• A)Primary transcripts in eukaryotes contain introns that have to be removed.
• B)The sigma factor in eukaryotes is unable to enter the nucleus.
• C)A 5  cap is added to the prokaryotic primary transcript allowing the ribosome to start translation immediately.
• D)Prokaryotes do not have a nuclear envelope and the ribosome can start translation even before transcription ends.
• E)All of these choices are correct.

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Definitions:

Information Processing

The approach by which human beings take in, use, and store information, akin to how computers process data.

Sign Language

A form of communication using gestures, body language, and facial expressions rather than sounds, for people who are deaf or hard of hearing.

Phonemes

The smallest units of sound in a language that can distinguish one word from another.

Alphabet

A standard set of letters that represent phonemes of a spoken language, used in the writing system.