nmdcat.online
BIO NMDCAT Conjugated molecules
nmdcat.online July 3, 2026

87. A researcher isolates a novel lipid-anchored protein from a mammalian cell membrane and determines that it is released from the membrane upon treatment with the enzyme phosphatidylinositol-specific phospholipase C (PI-PLC). This observation proves that the protein is a

A. Lipopolysaccharide variant
B. Glycosylphosphatidylinositol (GPI)-anchored glycoprotein
✓
C. Core histone nucleoprotein complex
D. Chylomicron apolipoprotein component

📝 Explanation

PI-PLC specifically hydrolyzes the phosphodiester bond within the GPI anchor, releasing the attached glycoprotein from its lipid tail.

📖 Additional Information

  • Lipopolysaccharide variant
  • Glycosylphosphatidylinositol (GPI)-anchored glycoprotein
  • Core histone nucleoprotein complex
  • Chylomicron apolipoprotein component

PI-PLC specifically hydrolyzes the phosphodiester bond within the GPI anchor, releasing the attached glycoprotein from its lipid tail.

🔗 Share This Question

Facebook Twitter LinkedIn WhatsApp

🧭 Navigate Questions

Previous Question

86. An experimental cell line exhibits a mutation resulting in a total loss of the enzyme phosphomannose isomerase. Biochemically, this defect leads to the failure of N-linked glycosylation. The immediate pathobiological outcome for the secreted proteins in this cell system will be

Next Question

88. The disease known as I-cell disease (mucolipidosis II) is a severe lysosomal storage disorder caused by a deficiency in the enzyme UDP-GlcNAc phosphotransferase. As a result of this molecular defect, lysosomal enzymes

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 →