Microbiology
Understand microorganisms, infection, laboratory diagnosis and antimicrobial resistance.
General subject summary is free to everyone.
Microbiology
Subject Summary
The public overview below follows the supplied PhysioVeda Academics subject summary.
Microbiology is the study of microorganisms and infectious agents, including bacteria, viruses, fungi and parasites, together with their structure, growth, transmission, pathogenicity, diagnosis and control.
Medical microbiology connects organism characteristics with clinical disease. A useful approach is to learn how an organism is identified, how it causes disease, how it spreads, which specimens and tests are useful, and which prevention measures reduce transmission.
For physiotherapy and rehabilitation, microbiology is clinically relevant to infection-control precautions, respiratory and wound infections, tuberculosis, healthcare-associated infection, immunocompromised patients and safe management of patients with invasive lines or recent surgery.
Laboratory diagnosis integrates microscopy, staining, culture, antigen/antibody methods, molecular testing and antimicrobial susceptibility testing. No single test is interpreted without specimen quality, clinical context and pre-test probability.
This summary follows the uploaded PhysioVeda Academics structure: General Microbiology, Sterilization and Disinfection, Bacteriology, Virology, Mycology, Parasitology, Clinical Microbiology, Healthcare-Associated Infection, Laboratory Diagnosis and Antimicrobial Resistance.
Whole-subject high-yield numbers
Use these supplied values and key facts for quick whole-subject revision.
| Typical bacterial ribosome | 70S = 50S + 30S subunits |
| Common bacterial chromosome | Usually one circular double-stranded DNA chromosome; exceptions occur |
| Bacterial growth curve | 4 classic phases: lag, log/exponential, stationary, decline/death |
| Classic steam sterilization cycle | 121 C at about 15 psi for ~15 min after target conditions are reached; load dependent |
| Common membrane filter pore size | 0.22 micrometre for many heat-labile fluids; does not remove all viruses/toxins |
| Gram-positive cell wall | Thick peptidoglycan; no outer membrane |
| Gram-negative cell wall | Thin peptidoglycan + outer membrane containing lipopolysaccharide |
| Influenza A genome | 8 segmented negative-sense RNA segments |
| HIV major target | CD4-positive cells, especially CD4 T lymphocytes |
| Standard precautions | Applied to every patient regardless of known infection status |
| Airborne precaution examples | Pulmonary TB, measles, varicella |
| PCR principle | Exponential amplification of a selected nucleic-acid target |
Core references
- Riedel S, Morse SA. Jawetz, Melnick & Adelberg's Medical Microbiology. 29th ed. McGraw Hill; 2026.
- Murray PR, Rosenthal KS, Pfaller MA. Medical Microbiology. 10th ed. Elsevier; 2025.
- Tille PM. Bailey & Scott's Diagnostic Microbiology. 16th ed. Elsevier; 2025.
Want to go deeper into Microbiology?
Continue into the complete topic and subtopic learning system with structured summaries, medical visuals, topic wise OBQ practice, timed tests, explanations and results.