nmdcat.online
BIO NMDCAT Structure of DNA
nmdcat.online July 3, 2026

90. An in vitro transcription assay utilizes a mutated RNA polymerase that cannot recognize or respond to the prokaryotic intrinsic termination signal. When this enzyme transcribes a gene containing a classic rho-independent terminator, the resulting molecular outcome will be

A. The production of an exceptionally short, truncated RNA molecule
B. The synthesis of an abnormally elongated RNA transcript due to read-through
✓
C. The immediate conversion of the template DNA into a left-handed Z-conformation
D. The covalent attachment of the enzyme to the structural promoter

📝 Explanation

Without a functional termination response, the polymerase runs past the end of the gene, creating a long, un-terminated read-through transcript.

📖 Additional Information

  • The production of an exceptionally short, truncated RNA molecule
  • The synthesis of an abnormally elongated RNA transcript due to read-through
  • The immediate conversion of the template DNA into a left-handed Z-conformation
  • The covalent attachment of the enzyme to the structural promoter

Without a functional termination response, the polymerase runs past the end of the gene, creating a long, un-terminated read-through transcript.

🔗 Share This Question

Facebook Twitter LinkedIn WhatsApp

🧭 Navigate Questions

Previous Question

89. The introduction of a chemical agent that intercalates flat aromatic rings directly between adjacent base pairs along the DNA double helix disrupts its geometry by increasing the vertical distance between base pairs from 0.34 nm to 0.68 nm. This alteration will directly induce

Next Question

91. The treatment of a eukaryotic cell line with a specific drug blocks the activity of the enzyme histone deacetylase (HDAC). Biochemically, this inhibition maintains high levels of histone acetylation across the genome, forcing structural genes to remain inside

Back to All Questions

🔗 Related MCQs

An increase in the incidence of ectopic pregnancies within a population can often be epidemiologically correlated with a prior increase in the prevalence of which sexually transmitted disease?
July 16, 2026
In the life cycle of Herpes Simplex Virus 2 (HSV-2), the virus travels along nerve fibers to reach the sensory ganglia. The cellular mechanism responsible for this retrograde transport utilizes:
July 16, 2026
A defining characteristic of the lesions associated with the secondary stage of syphilis is that they:
July 16, 2026
The causative agent of genital herpes, HSV-2, is enveloped. The biological significance of this viral envelope in the context of transmission is that it makes the virus:
July 16, 2026
The structural basis for the severe cardiovascular complications seen in tertiary syphilis, such as aortic aneurysms, is the chronic inflammation and destruction of:
July 16, 2026

Categories

View all →