MCAT Biology: Viruses, Prions and Viroids

Viruses, prions and viroids for the MCAT, animated and explained simply. Part of MCAT Biology Chapter 1: The Cell. Full playlist:    • MCAT Biology – Chapter 1: The Cell (Made S...   What this lesson covers: • What a virus is: acellular, tiny, obligate intracellular parasites • Capsids, envelopes, and enveloped vs naked viruses • Bacteriophage structure • Viral genomes: positive sense, negative sense, RNA replicase • Retroviruses, reverse transcriptase and proviruses • Gene therapy • The HIV life cycle in seven steps • Infection, building new viruses, and release (lysis and budding) • Lytic and lysogenic cycles, prophages, specialized transduction • Prions and viroids, plus hepatitis D Covers part of AAMC content category 2B, for MCAT prep. Chapters 0:00 Intro 0:29 What is a virus? 1:18 How a virus is built 2:37 Obligate intracellular parasites 3:26 Bacteriophages 4:07 Viral genomes 5:29 Retroviruses and gene therapy 6:53 The HIV life cycle 8:16 Infection: getting into a cell 9:43 Building new viruses 10:52 Release: lysis and budding 11:26 Lytic and lysogenic cycles 13:34 Prions 14:30 Viroids and hepatitis D 15:26 Recap Questions, or something I could explain better? Leave it in the comments. Flashcards for this lesson: https://mrportella.com #MCAT #MCATBiology #Virology #premed #biology