Applications of Carbon Nanotubes

Carbon nanotubes (CNTs) have high surface areas, making them excellent targeted carriers for drugs and antigens (Statement 1 is correct). Their strength, flexibility, and tubular structure allow them to act as scaffolds or artificial blood capillaries (Statement 2 is correct). Their unique electrical properties make them highly sensitive biochemical sensors (Statement 3 is correct). Recent microbiological studies have demonstrated that certain enzymes (like myeloperoxidase) can safely degrade multiple types of carbon nanotubes, making them biodegradable in specific physiological conditions (Statement 4 is correct). > One-line conceptual takeaway: The extreme versatility of Carbon Nanotubes allows wide-ranging biomedical applications, including controlled biodegradation. Answer: (d).