nmdcat.online
BIO NMDCAT Ribonucleic acid (RNA)
nmdcat.online July 3, 2026

90. A researcher synthesizes a structural variant of a tRNA molecule where the anticodon sequence is altered from 3′-UAC-5′ to 3′-UUG-5′, but the molecule remains charged with methionine. During translation, this engineered tRNA will insert methionine at codons reading

A. 5'-AAC-3'
✓
B. 5'-UUG-3'
C. 5'-AAC-3'
D. 5'-AAC-3'

📝 Explanation

The ribosome checks only the codon-anticodon match. The 3'-UUG-5' anticodon will pair with a 5'-AAC-3' codon, incorrectly introducing methionine.

📖 Additional Information

  • 5'-AAC-3'
  • 5'-UUG-3'
  • 5'-AAC-3'
  • 5'-AAC-3'

The ribosome checks only the codon-anticodon match. The 3'-UUG-5' anticodon will pair with a 5'-AAC-3' codon, incorrectly introducing methionine.

🔗 Share This Question

Facebook Twitter LinkedIn WhatsApp

🧭 Navigate Questions

Previous Question

89. During the chemical extraction of total cellular nucleic acids, treating the sample with a mild alkaline solution at an elevated temperature causes the selective degradation of RNA while leaving DNA intact. The chemical explanation for this observation is

Next Question

91. An analysis of a eukaryotic gene reveals that it produces a single pre-mRNA transcript, but three distinct tissue-specific proteins are detected. This structural variation is most likely achieved by

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 →