Euchromatin is typically transcriptionally active.

Master the BCT Lab Practical 1 Test. Prepare with detailed flashcards and insightful multiple choice questions, complete with feedback and rationales. Ace your exam!

Multiple Choice

Euchromatin is typically transcriptionally active.

Explanation:
Chromatin structure and gene expression are tightly linked: euchromatin is the lighter, less condensed form that allows transcription machinery to access DNA. Because it’s more open, RNA polymerase and transcription factors can bind gene promoters and actively transcribe genes, especially during interphase. That’s why this statement is true. The alternative about being highly condensed describes heterochromatin, which is generally transcriptionally silent because the tight packing restricts access to DNA. The idea of euchromatin being located in the nucleolus isn’t a defining feature—the nucleolus is mainly the site of ribosomal RNA synthesis, not the general location of euchromatin.

Chromatin structure and gene expression are tightly linked: euchromatin is the lighter, less condensed form that allows transcription machinery to access DNA. Because it’s more open, RNA polymerase and transcription factors can bind gene promoters and actively transcribe genes, especially during interphase. That’s why this statement is true.

The alternative about being highly condensed describes heterochromatin, which is generally transcriptionally silent because the tight packing restricts access to DNA. The idea of euchromatin being located in the nucleolus isn’t a defining feature—the nucleolus is mainly the site of ribosomal RNA synthesis, not the general location of euchromatin.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy