Transcription Factors Account for a Greater Proportion of the Proteome

question 17

Multiple Choice

Transcription factors account for a greater proportion of the proteome in a fetus compared to a 20-year-old because

• A) many cells have already died in a 20-year-old.
• B) a fetus does not yet need many of its proteins.
• C) cells are actively differentiating and many structures are forming in a fetus.
• D) an adult can carry out more activities than can a fetus.
• E) the 20-year-old can consciously activate his or her transcription factors.

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