nmdcat.online
BIO NMDCAT BIOLOGICAL MOLECULES
nmdcat.online June 27, 2026

A mutation in a gene results in a single amino acid substitution in a hemoglobin protein, causing sickle cell anemia. This alteration directly affects the protein’s

A. Primary structure
B. Secondary structure
C. Tertiary structure
D. All of the structural levels mentioned
✓

📝 Explanation

Changing one amino acid (primary structure) can disrupt the local folding (secondary), which in turn alters the overall 3D shape (tertiary) and its ability to bind with other subunits (quaternary). Thus, all higher levels of structure are ultimately dependent on the primary sequence.

📖 Additional Information

  • Primary structure
  • Secondary structure
  • Tertiary structure
  • All of the structural levels mentioned

Changing one amino acid (primary structure) can disrupt the local folding (secondary), which in turn alters the overall 3D shape (tertiary) and its ability to bind with other subunits (quaternary). Thus, all higher levels of structure are ultimately dependent on the primary sequence.

🔗 Share This Question

Facebook Twitter LinkedIn WhatsApp

🧭 Navigate Questions

Previous Question

Regarding the tertiary structure of a globular protein, the folding pattern is determined by the

Next Question

The catalytic efficiency of an enzyme is significantly reduced by a non-competitive inhibitor because it

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 →