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🦠 MCAT Biology Ep. 8: Prokaryotes, Viruses, Biofilms, and Prions Explained | High-Yield Microbiology for Test Day
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🦠 MCAT Biology Ep. 8: Prokaryotes, Viruses, Biofilms, and Prions Explained | High-Yield Microbiology for Test Day

MCAT Biology Essential Topic

In this 1-hour 42-minute deep-dive episode of MCAT Biology Pulse, we break down high-yield microbiology topics you must know for test day: prokaryotic cell structure, virus life cycles, bacterial biofilms, and the bizarre world of prions.

Whether you're reviewing for the MCAT or building your foundational science knowledge, this episode delivers detailed, test-relevant insight to boost your score.

Watch the full episode and access study visuals at:

https://mdtalk.substack.com/s/mcat-biology-pulse


Unlock essential MCAT biology concepts in this high-yield episode! We break down the structure, growth, genetics, and physiology of prokaryotes and viruses—including key differences between Gram-positive and Gram-negative bacteria, viral replication, antibiotic resistance, plasmids, biofilms, quorum sensing, prions, and viroids. Includes clinical correlations, pop quizzes, and MCAT-style insights to sharpen your test-day performance.

🎧 Listen Now on Substack & YouTube
📚 Keywords: MCAT Biology, Prokaryotes, Viruses, Biofilms, Prions, Microbial Genetics, Bacterial Structure, Medical Microbiology, MCAT Review


🎙️ Episode Summary
In this high-yield episode of MCAT Biology Pulse, we dive into the microscopic frontier where biology meets biochemistry and infectious disease. Join Jennie and Dr. Rafael Moreno—our virtual hosts—as they guide you through 50 structured segments on:

  • The structure and growth of prokaryotes

  • Viral life cycles and genetics

  • Horizontal gene transfer: transformation, conjugation, transduction

  • Biofilms, quorum sensing, and chemotaxis

  • Endospore formation and bacterial survival tactics

  • Viral structure and replication, including retroviruses and bacteriophages

  • A deep dive into the wild cards of biology: prions and viroids

Each segment is built for memory, packed with clinical insights, MCAT-style quizzes, historical discoveries, and simplified college-level explanations.


🧠 High-Yield Topics Covered

MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8
MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8
MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8
Prokaryotes, Viruses, Biofilms, and Prions
MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8
MCAT Biology Pulse Episode 8MCAT Biology Pulse Episode 8
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Prokaryotes, Viruses, Biofilms, and Prions
  • Binary fission and growth curves

  • Gram-positive vs. Gram-negative cell walls

  • Plasmids and antibiotic resistance

  • Viral replication strategies (lytic vs lysogenic)

  • Retrovirus mechanisms (HIV)

  • Protein-only pathogens like prions

  • Subviral particles like viroids

  • The role of biofilms in chronic disease

  • Medical microbiology's most testable details


🎓 Why This Matters for the MCAT
The AAMC loves testing your understanding of microbial structure, pathogenesis, and transmission mechanisms—not just memorization. This episode connects these concepts to real-life medical implications and MCAT-style thinking.


👥 Meet Your Virtual Hosts

  • Jennie – Your sharp, supportive MCAT mentor who guides you every step of the way

  • Dr. Rafael Moreno – A simulated biologist-educator bringing clinical insight and storytelling to every molecular pathway


Download Study Guide

🎯 Study Tip: Bookmark this episode. Listen once for comprehension, and again while reviewing flashcards or notes. Pair it with Episode 7 to reinforce your understanding of eukaryotic cell structures.


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