MCAT 2B · Bio/Biochem
Prokaryotes, Viruses and Microbial Genetics
523 original Anki flashcards, an 11-page illustrated study guide, a 4-page cheat sheet and 54 practice questions for MCAT content category 2B.
What is inside
- deck.apkg523 original Anki flashcards (290 short answer, 98 multiple choice, 59 cloze, 67 true/false, 9 image occlusion), 22 original diagrams
- guide.pdf11-page illustrated study guide that explains the ideas
- cheatsheet.pdf4 printable pages, US Letter at 100 percent
- questions.pdf54 original MCAT-style practice questions with explanations, including 4 passage-based sets
- README.txtimport steps
- 290 short answer
- 98 multiple choice
- 59 cloze
- 67 true/false
- 9 image occlusion
Topics (19)
- 01PrProkaryote cell structure
- 02BaBacterial shapes and cell wall types (Gram stain)
- 03BaBacterial growth curve
- 04BiBinary fission
- 05BaBacterial metabolism and oxygen requirements
- 06PlPlasmids and antibiotic resistance
- 07TrTransformation
- 08CoConjugation and F factor
- 09TrTransduction
- 10TrTransposons
- 11ArArchaea versus bacteria
- 12BaBacterial symbiosis and pathogenesis
- 13ViVirus structure and classification
- 14ViViral life cycles: lytic and lysogenic
- 15ReRetroviruses and reverse transcriptase
- 16ViViral host range and replication
- 17PrPrions and viroids
- 18FuFungi basics
- 19AnAntibiotic mechanisms
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Previews
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Try it · sample practice questions
Five questions from the pack.
Q1A culture begins log growth with 3.0 x 10^3 cells/mL and a generation time of 40 minutes. How many cells/mL after 4 hours?
B. 4 hours is 240 minutes, so n = 240/40 = 6. N = 3.0 x 10^3 x 2^6 = 192,000 = 1.92 x 10^5. Using 5 generations gives 9.6 x 10^4, using 7 gives 3.84 x 10^5, and 1.2 x 10^4 is only 2 generations.
Q2Which statement correctly pairs a structure with its function?
D. Lipid A is the endotoxin portion of LPS. Teichoic acids are in Gram-positive walls, capsules resist phagocytosis, and porins are channels, not resistance genes.
Q3In Griffith's experiment, which injection killed mice and yielded live S bacteria?
C. R cells absorbed DNA from dead S cells and gained the capsule. Heat-killed S alone cannot grow, live R alone is harmless, and heat-killed R is harmless.
Q4Which is a heat-stable component of Gram-negative bacteria that causes fever and septic shock?
B. LPS (lipid A) is heat stable and triggers TLR4. Botulinum toxin and exotoxins are secreted proteins and heat labile, and peptidoglycan does not drive classical endotoxic shock.
Q5Two influenza strains infect the same cell and produce a virus with a novel hemagglutinin that is not recognized by existing antibodies. This process is:
D. Exchange of RNA segments is reassortment, called shift. Drift is gradual point mutation, lysogenic conversion is a phage process, and influenza does not use reverse transcription.
Those are real questions from the pack, word for word.