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Microbiology

Bacteria, viruses, fungi, microbial genetics, antimicrobials, and host-pathogen interactions

Written and reviewed by the Study Mondo Education TeamLast updated
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Microbiology for the MCAT

Bacteria

  • Prokaryotic, cell wall (peptidoglycan)
  • Gram+: Thick peptidoglycan (purple); Gram−: Thin + outer membrane (pink)
  • Shapes: cocci (spheres), bacilli (rods), spirilla (spirals)
  • Binary fission (asexual, rapid)

Viruses

  • Obligate intracellular parasites; DNA or RNA genome
  • Lytic: Replicate immediately, lyse cell
  • Lysogenic: Integrate into host genome
  • Retroviruses (HIV): RNA → DNA via reverse transcriptase

Microbial Genetics

  • Transformation: Uptake of free DNA
  • Transduction: DNA transfer via bacteriophage
  • Conjugation: Direct transfer via pilus (F-plasmid)
  • Plasmids often carry antibiotic resistance genes

Antimicrobials

  • Target cell wall (penicillin), protein synthesis (tetracycline), DNA (fluoroquinolones)
  • Resistance: mutation or horizontal gene transfer
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📌 Related Topics in Biological & Biochemical Foundations

❓ Frequently Asked Questions

What is Microbiology?▾
Bacteria, viruses, fungi, microbial genetics, antimicrobials, and host-pathogen interactions
How can I study Microbiology effectively?▾
Start by reading the study notes and working through the examples on this page. Then use the flashcards to test your recall. Regular review and active practice are key to retention.
Is this Microbiology study guide free?▾
Yes — all study notes, flashcards, and practice problems for Microbiology on Study Mondo are free to access. No account is needed.
What course covers Microbiology?▾
Microbiology is part of the MCAT Prep course on Study Mondo, specifically in the Biological & Biochemical Foundations section. You can explore the full course for more related topics and practice resources.