Microbiology MCQs (Quiz 13) Posted on June 9, 2026Author agropublishers 0 1. ___________________________ a microbiologist is widely recognized for developing and proving the germ theory of disease Robert Hooke Alexander Fleming Louis Pasteur Edward Jenner 2. The branch of science that deals with the study of bacteria is called ______________ Parasitology Virology Bacteriology Mycology 3. The term “microbe” refers to ____________________ Viruses All microscopic organisms Plants Animals 4. ____________________________ was the first antibiotic discovered Streptomycin Erythromycin Tetracycline Penicillin 5. Bacterium _____________________ ______________ is commonly found in the human intestine Salmonella Typhi Escherichia coli Vibrio cholerae Mycobacterium tuberculosis 6. _______________________ of the following is a prokaryote Fungus Protozoan Alga Bacterium 7. _______________________ specifically measures the number of new cases of a disease arising within a defined population over a specified period of time Prevalence Incidence Hyperendemicity % positivity 8. The microorganism causing fatal poisoning in canned fruits and vegetables is ______________________ Rhizoctonia solani Penicillium digitatum Aspergillus flavus Clostridium botulinum 9. The great Bengal famine was mainly caused by _______ Karnal bunt of wheat Blast of rice Brown spot of rice Rust of wheat 10. Considering the habitat of microorganisms, they can be called ________________________ Parasitic organisms Pathogenic organisms Ubiquitous organisms Common organisms Loading … Question 1 of 10