Antibiotics - Penicillin Production - Unsolved Practice Set
Chapter: Microbes in Human Welfare | Topic: Antibiotics Penicillin Production
ANTIBIOTICS - PENICILLIN PRODUCTION - UNSOLVED PRACTICE SET
Topic: Antibiotics Penicillin Production
Multiple Choice Questions
Q1. Penicillin, one of the first antibiotics to be discovered, was identified by:
- Louis Pasteur
- Alexander Fleming
- Robert Koch
- Edward Jenner
Q2. Penicillin is naturally produced by the fungus:
- Saccharomyces cerevisiae
- Penicillium notatum
- Lactobacillus
- Aspergillus niger
Q3. Antibiotics are substances that:
- Promote the growth of all microorganisms
- Kill or inhibit the growth of other microorganisms, particularly disease-causing bacteria
- Have no effect on any organism
- Are only effective against viruses
Q4. Alexander Fleming's discovery of penicillin came about after he observed that:
- Bacteria grew faster near a mould contamination
- A mould contaminating his bacterial culture plate inhibited the growth of bacteria around it
- All his experiments failed
- No microorganisms could survive together
Q5. The large-scale industrial production of antibiotics like penicillin typically involves:
- Small-scale laboratory dishes only
- Large fermenters, where the antibiotic-producing microorganism is cultured under controlled conditions
- No microbial culturing at all
- Only chemical synthesis, with no microorganisms involved
Short Answer Questions
Q6. Who discovered penicillin, and under what circumstances was this discovery made?
Q7. Define antibiotics, in your own words.
Q8. Name the fungus responsible for the natural production of penicillin.
Q9. Why is it important to complete a prescribed course of antibiotics, rather than stopping early once symptoms improve?
Long Answer Questions
Q10. Describe the discovery of penicillin by Alexander Fleming, explaining the key observation that led to this important finding.
Q11. Explain the significance of antibiotics in modern medicine, and briefly describe how they are produced on a large industrial scale.
APPLICATION / ANALYSIS
Q12. A patient stops taking their prescribed antibiotic course as soon as they start feeling better, instead of completing the full course as advised by their doctor. Explain, using your understanding of antibiotics and bacterial resistance, why this could be a risky decision.
Q13. A pharmaceutical company sets up large fermenters to grow Penicillium on a nutrient-rich medium under carefully controlled temperature and oxygen conditions. Explain why maintaining such controlled conditions is important for maximising antibiotic yield during industrial production.