A. Interferons
B. Macrophages
C. Neutrophils
D. Autolysis
✅ The correct answer is option Interferons.
428. All of the following infections may be transmitted be dental instruments except____________?
A. HIV
B. Hepatitis C
C. Hepatitis B
D. Hepatitis E
✅ The correct answer is option Hepatitis E.
423. Erysipelas is caused by________________?
A. Group B staphylococci
B. Group A steptococci
C. Gonococci
D. Pneumococci
✅ The correct answer is option Group B staphylococci.
417. Portion of immunoglobulin molecule with molecular weight to 50000_________________?
A. Secretory piece
B. H chain
C. L chain
D. J piece
✅ The correct answer is option H chain.
412. The Process of attenuation can be achieved by all except___________________?
A. Growing bacteria in adverse environment
B. Growing bacteria in unconventional host
C. Serial passage in an experimental host
D. Repeated cultures in artificial media
✅ The correct answer is option Serial passage in an experimental host.
407. Characters of exotoxin include all, except_______________?
A. Protein polysaccharide complex
B. Heat labile
C. Highly potent
D. Has specific tissue affinity
✅ The correct answer is option Protein polysaccharide complex.
401. Opportunistic infection is caused by___________________?
A. Penicillium
B. Mucor
C. Aspergillus
D. All of the above
✅ The correct answer is option All of the above.
437. Bacterial cell does not possess___________________?
A. dna
B. Ribosome
C. Mitochondria
D. Cell wall
✅ The correct answer is option Mitochondria.
430. Teichoic acid is present in cell walls of_________________?
A. Gram positive bacteria
B. Gram negative bacteria
C. Yeast
D. Protozoa
✅ The correct answer is option Gram positive bacteria.
425. Virus are sharply differentiated from bacteria by_______________?
A. Presence of either DNA or RNA
B. Simple structure
C. Complex multiplication
D. All of the above
✅ The correct answer is option All of the above.