Which of the following is true of the structure of typical transcriptional activators?

a. they contain only one type of motif.
b. the regulatory domain contains the dna-binding motif.
c. the dna-binding domain always binds to the coactivator.
d. they contain a regulatory domain that is functional when removed from the dna-binding domain.

D.They contain a regulatory domain that is functional when removed from the DNA-binding domain.

Explanation:

Transcriptional activators are transcriptional factors that positively regulate transcription of the gene (increase gene transcription). They usually contain two functional domains:

Mechanism of action of activators includes their binding to the enhancers (DNA sequences) and recruitment of RNA polymerase II to the promoter.

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a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.