Pharmaceutical microbiology MCQ questions are a mix of history, staining, sterilisation and disease-causing organisms. This quiz has 30 questions that cover all four areas, so you can find out quickly which one needs more revision.
Microbiology also helps in sterile product manufacturing and quality control, so it is worth learning well.
Try the Pharmaceutical Microbiology MCQ quiz first
Answer the 30 questions below one by one. You will see whether each answer is right as you go, so keep a pen and paper ready to note the ones you miss.
Why Pharmaceutical Microbiology deserves your time
Most students find microbiology easy to understand but hard to remember. There are many names of organisms, scientists and diseases. The trick is to group them: one list for scientists and their discoveries, one list for organisms and their diseases, and one list for sterilisation and indicators. When you revise group by group, the facts stop mixing.
Tricky Pharmaceutical Microbiology MCQ questions explained
These are the questions from the set above that students most often get wrong, with the reason behind each answer.
- Who first saw bacteria under a microscope?
Answer: Anton van Leeuwenhoek. Pasteur, Koch and Fleming made their discoveries later. - What colour do Gram-positive bacteria show after Gram staining?
Answer: Purple or violet. Their thick peptidoglycan wall retains the crystal violet. Gram-negative bacteria appear pink. - Which stain is used to identify tuberculosis bacilli?
Answer: Ziehl-Neelsen (acid-fast) stain. Gram staining does not work well on mycobacteria because of their waxy wall. - Which organism is the biological indicator for autoclave sterilisation?
Answer: Geobacillus stearothermophilus. For dry heat sterilisation, Bacillus subtilis var. niger is used. - What does MIC stand for and mean?
Answer: Minimum Inhibitory Concentration, the lowest concentration that inhibits visible growth. It is different from the concentration that kills all microbes.
Facts worth memorising in Pharmaceutical Microbiology
- Fleming discovered penicillin from Penicillium, Jenner developed the smallpox vaccine and Sabin developed the oral polio vaccine.
- Vibrio cholerae causes cholera, Salmonella typhi causes typhoid and Plasmodium causes malaria.
- Bacteria divide by binary fission, and a plasmid is an extrachromosomal circular DNA.
- A virus has either DNA or RNA, never both.
- The BCG vaccine protects against tuberculosis, and HIV infection leads to AIDS.
- Agar is the usual solidifying agent in culture media, and nutrient agar is a general-purpose medium.
How to use this quiz for revision
Make three small lists: scientist and discovery, organism and disease, and sterilisation and indicator. Test yourself by covering one side of each list. Then attempt this pharmaceutical microbiology MCQ quiz again. You will notice that your mistakes now come from one list only, and that is the one to revise next.
Frequently asked questions about pharmaceutical microbiology MCQ
Why is microbiology important for pharmacists?
Pharmacists need it for sterile products, antibiotics, vaccines and quality control of medicines.
Which topics are most important?
Sterilisation, staining, culture media, common pathogens, antibiotics and vaccines.
Does the quiz include sterilisation questions?
Yes. It includes autoclave and dry heat indicators, phenol coefficient and culture media.
Keep practising
If this pharmaceutical microbiology MCQ set felt comfortable, move on to the next subject. These pages will help:
- Anatomy and Physiology MCQ quiz
- Biochemistry MCQ quiz
- Noteskarts Test Series for D.Pharm and pharmacist exams
- D.Pharm 1st Year PDF Notes
- D.Pharm 2nd Year Notes
For official syllabus details and regulations, refer to World Health Organization and CDC.
Written by the Noteskarts pharmacy education team. This quiz is for exam practice and learning only; always check your latest syllabus and standard textbooks for final answers.
